With Direct Application Of Magnetic Force To Manipulate Shaping Means Or Work Patents (Class 425/3)
  • Patent number: 6436327
    Abstract: A method and apparatus for forming golf ball cores with a generally spherical nucleus at its center is characterized by the use of a transfer plate which insures that the nucleus is centered within the core. The core is formed in upper and lower mold plates which contain upper and lower hemispherical cavities, respectively, which are adapted to mate to define a spherical cavity for the core. The transfer plate is arranged between the mold plates and includes a support for the nucleus to position the nucleus in the center of a pair of upper and lower slugs of core material which are molded in the upper and lower hemispherical cavities. When the mold plates are initially brought together with the transfer plate arranged therebetween and with the slugs arranged on opposite sides of the transfer plate, the slugs are partially molded in the hemispherical cavities with the nucleus being pressed into one of the slugs.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: August 20, 2002
    Assignee: Spalding Sports Worldwide, Inc.
    Inventors: Mark Cloutier, Jon Wigby, Vincent J. Simonds
  • Publication number: 20020066976
    Abstract: A method and apparatus for forming golf ball cores with a generally spherical nucleus at its center is characterized by the use of a transfer plate which insures that the nucleus is centered within the core. The core is formed in upper and lower mold plates which contain upper and lower hemispherical cavities, respectively, which are adapted to mate to define a spherical cavity for the core. The transfer plate is arranged between the mold plates and includes a support for the nucleus to position the nucleus in the center of a pair of upper and lower slugs of core material which are molded in the upper and lower hemispherical cavities. When the mold plates are initially brought together with the transfer plate arranged therebetween and with the slugs arranged on opposite sides of the transfer plate, the slugs are partially molded in the hemispherical cavities with the nucleus being pressed into one of the slugs.
    Type: Application
    Filed: December 6, 2000
    Publication date: June 6, 2002
    Inventors: Mark Cloutier, Jon Wigby, Vincent J. Simonds
  • Patent number: 6338618
    Abstract: An apparatus for forming an article from at least one layer of formable material includes a mold for receiving the at least one layer of formable material. The mold has first and second thin mold sections and a seal associated with at least one of the mold sections for effecting a sufficiently sealed relationship between the mold sections. Each mold section has a non-planar configuration, and one mold section has at least one aperture. A vacuum source is in fluid communication with the at least one aperture for applying a vacuum pressure to the at least one aperture when the mold sections are sufficiently sealed together in order to reduce air pressure within the mold. As a result, ambient air pressure is used to forcefully bias the mold sections sufficiently together so as to form the at least one layer of formable material to a contour corresponding to the non-planar configurations of the mold sections.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: January 15, 2002
    Assignee: Lear Corporation
    Inventors: Jack M. Van Ert, George B. Byma
  • Publication number: 20010042944
    Abstract: Fine particles (23) are oriented and dispersed in a polymer medium to obtain a composite material (24), which is high-density compression molded to such a size that a photonic band gap develops, thereby obtaining a photonic crystal element (26). The orientation of the fine particles (23) in the polymer medium can be carried out on a scale (tens of micrometers to several millimeters) where required manipulations can be done with ease.
    Type: Application
    Filed: February 28, 2001
    Publication date: November 22, 2001
    Applicant: Japan Aviation Electronics Industry Limited
    Inventors: Mitsuo Ukechi, Ryoji Kaku
  • Patent number: 6302669
    Abstract: An apparatus for manufacturing a magnet roller makes it possible to remarkably reduce defects on the surface or the inside of a magnet roller and also to control “warp” of the magnet roller sufficiently so that it does not adversely affect the functions of the magnet roller. A metal mold for magnetic field injection molding is composed of two fixed mold counterparts and a movable mold counterpart. The movable mold counterpart is moved to increase the volume of the cavity of the metal mold as a resin-bonded magnet material is injected into the mold.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: October 16, 2001
    Assignee: Bridgestone Corporation
    Inventors: Toshimichi Nishizawa, Takatoshi Nanba, Kazuhiro Nakada
  • Patent number: 6299832
    Abstract: In a rare earth metal-based alloy powder supplying apparatus, a rare earth metal-based alloy powder is supplied from a feeder box having an opening in its bottom surface into a cavity by moving the feeder box to above the cavity. The apparatus includes a bar-shaped member which is moved horizontally and in parallel in the bottom of the feeder box. A plurality of the bar-shaped members may be provided horizontally at distances. The apparatus further includes a powder replenishing device for sequentially replenishing the alloy powder into the feeder box in an amount corresponding to a decrement in amount resulting from the supplying of the alloy powder from the feeder box to the cavity, an inert gas supply device for filling an inert gas into said powder feeder box, and a plate member made of a fluorine-contained resin and mounted on the bottom surface of the feeder box.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: October 9, 2001
    Assignee: Sumitomo Special Metals Co., Ltd.
    Inventors: Seiichi Kohara, Shuhei Okumura, Akira Nakamura
  • Patent number: 6227835
    Abstract: A machine for producing parts of foamed plastic material, wherein a gantry-type frame supports a fixed half-mold, and a carriage from which is suspended a movable half-mold and which is movable along the frame to impart to the movable half-mold an approach movement towards, and a parting movement from, the fixed half-mold; the movable half-mold being locked to the fixed half-mold, in a position closing a mold for injecting foamed plastic material, by a number of electromagnets interposed between the two half-molds.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: May 8, 2001
    Assignee: Bazzica Engineering Di Carlo Bazzica & C. S.a.s.
    Inventor: Carlo Bazzica
  • Patent number: 6210140
    Abstract: A bending table upon which lengths of plastics material rendered flexible by heating, may be set to determine a desired curvature thereof, particularly for producing arched UPVC window and door frames, the table including an unslotted ferro-magnetic top (1) and a plurality of bobbins (3) each mounted at the end of a radially extending arm (6,7) the arms being mounted upon independently rotatable spindle members (4) such that the angles subtended by each adjacent arms (6,7) is adjustable and wherein the spindles (4) are themselves may be positioned selectively along a locating strip (16) fixed to the table top. Further arms (17) are adjustable along the strip (16) and extend transversely across the table top to support one or more fences (18). The table enables an arched profile (32) having, if required, straight sections, to be produced to any desired shape, and the magnetically attractive bobbins (3) retain the positions of the arms but can be readily adjusted to suit any desired profile.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: April 3, 2001
    Assignee: Universal Arches Limited
    Inventors: Paul Degiorgio, Peter Turner
  • Patent number: 6174153
    Abstract: An apparatus for forming magnetized rotating elements for a rotating element display where all the elements are magnetized in the same orientation is disclosed. The apparatus comprises at least one separator member. Each separator member has a diameter, two opposed surfaces and an edge region in contact with both of the surfaces. Further included is an apparatus for providing at least two liquid flows wherein each one of the liquid flows has an associated separator member and an associated surface on the associated separator member, and each one of the liquid flows is provided across the associated surface of the associated separator members. The liquid flow flows toward the edge region of the associated separator member. The liquid flows are each a flow of hardenable liquid material associated with an optical modulation characteristic, and at least one of the liquid flows containing a magnetic pigment.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: January 16, 2001
    Assignee: Xerox Corporation
    Inventor: Nicholas K. Sheridon
  • Patent number: 6132198
    Abstract: A tie-bar less clamping apparatus is intended for use in combination with an injection molding machine. A stationary platen (24) is fixed to a first support section (20B) of a support frame (20), and linear motors (30) are incorporated into the second support section (20C) of the support frame (20). One end of an armature (34) included in each linear motor (30) and having the shape of a rod is connected to a movable platen (28).
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: October 17, 2000
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Masahiro Tamaki, Jun Koike
  • Patent number: 6124648
    Abstract: A molding machine includes a drive unit for linearly moving a movable body, such as a movable platen of a clamping apparatus. The drive unit includes a linear motor. The linear motor includes a linear movement body having moving-side magnetic-pole portions and supported in an axially movable manner, and a stationary body having stationary-side magnetic-pole portions adapted to linearly move the linear movement body. The linear movement body is connected to the movable body (movable platen). The linear movement body has moving-side inclined surfaces on which part of the moving-side magnetic-pole portions are disposed. The stationary body has stationary-side inclined surfaces which face the moving-side inclined surfaces and on which part of the stationary-side magnetic-pole portions are disposed.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: September 26, 2000
    Assignees: Nissei Plastic Industrial Co., Ltd., Nisso Electric Company
    Inventors: Hiroshi Shibuya, Satoshi Nishida, Tokuzou Sekiyama, Satoru Matsubara, Atsushi Koide
  • Patent number: 6123892
    Abstract: A magnet molding tool for controlling the orientation of magnetic particles in a polymer bonded magnet during injection molding. A magnet mold has a mold cavity. A flux generator is connected to the magnet mold for applying a magnetic field in the cavity. An upper plate is attached to the magnet mold to modify the magnetic field in the cavity such that the orientation of the magnetic particles varies proportionally to the dimensions of the plate.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: September 26, 2000
    Assignee: CTS Corporation
    Inventor: Craig A. Jarrard
  • Patent number: 6106759
    Abstract: A magnet molding tool for controlling the orientation of magnetic particles in a polymer bonded magnet during injection molding. The tool has magnet mold having a mold cavity. A flux generator is connected to the magnet mold. The flux generator applies a magnetic field in the cavity. A non-magnetic cap is attached to the magnet mold and is dimensioned to modify the magnetic field in the cavity such that the orientation of the magnetic particles in the cavity varies proportionally to the dimensions of the non-magnetic cap. In an alternative embodiment, a slot is formed in the magnet mold and dimensioned to modify the magnetic field in the cavity.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: August 22, 2000
    Assignee: CTS Corporation
    Inventor: Craig A. Jarrard
  • Patent number: 6090331
    Abstract: A method of manufacturing a gel candle having a non-metal core wick that stands upright and is not bent, wilted, or submerged in the gel candle body. In one aspect, the method includes providing a gel-forming liquid composition in a candle container having a longitudinal axis running therethrough, the gel-forming liquid composition having an average temperature of between about 195.degree. F. and about 230.degree. F.; thereafter, inserting a wick-clip having a non-metal core wick into the composition in the container when the temperature of the composition substantially in the center of the container is between about 160.degree. F. and about 195.degree. F.; and positioning the wick-clip in the composition in the container using a magnetic material. After the positioning step, the non-metal core wick is substantially aligned with the longitudinal axis of the container. In another aspect, the method can further include cooling the composition in the container.
    Type: Grant
    Filed: August 28, 1998
    Date of Patent: July 18, 2000
    Assignee: S. C. Johnson & Son, Inc.
    Inventors: Ralph F. Schwarz, Shannon J. Hennessy, Michael J. Rohrer
  • Patent number: 6090322
    Abstract: A method for producing a sealing member for a battery includes integrally insert-molding a gasket on a peripheral edge of a metal sealing plate. The gasket is molded on the peripheral edge of the metal sealing plate by inserting the metal sealing plate between the female and male molds, the female mold having a concave surface conforming to the upper surface of the metal sealing plate and provided with a magnet or vacuum suction mouth to attract the metal sealing plate in its center, and the male mold having a surface conforming to the lower surface of the metal sealing plate, then injecting a molten resin into a cavity formed between the female mold and the male mold while pressing the female and male molds against each other by an elastic member.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: July 18, 2000
    Assignees: Matsushita Electric Industrial Co., Ltd., Shinsei Kagaku Kogyo Co., Ltd.
    Inventors: Shinji Tsurutani, Syunichi Tanoue, Fumio Daio
  • Patent number: 6080352
    Abstract: A brushless permanent-magnet direct current motor has a permanent magnet which is magnetized to create an offset angle between detent and mutual torques for providing sufficient starting torque for all relative orientations between the stator and the rotor of the motor. This is accomplished by providing a permanent magnet in which the global magnetization of the magnet has been disrupted by the application of a local magnetic field to a portion of the magnet, thereby to provide a magnetic anomaly in the global magnetization. Also, a method of magnetization of the magnet is described.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: June 27, 2000
    Assignee: Seagate Technologies, Inc.
    Inventors: John C. Dunfield, Gunter K. Heine, Marcel Jufer, Kamran Oveyssi
  • Patent number: 6077349
    Abstract: When applying a coating film by a spin coating method on a disc-shaped recording medium, the film thickness difference between the inner rim and the outer rim of the disc has to be suppressed. To this end, a coating liquid is supplied to a center portion of the disc-shaped recording medium and a rotary disc, as a center shaft of a rotary disc is inserted into a recess formed in a turntable on which the disc-shaped recording medium is set and the disc-shaped recording medium and a rotary disc are run in rotation. The coating liquid is spread under the centrifugal force caused by rotation for forming a coating film on the disc-shaped recording medium.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: June 20, 2000
    Assignee: Sony Corporation
    Inventor: Minoru Kikuchi
  • Patent number: 6066275
    Abstract: A method and apparatus for determining and controlling the excess length of a communications element disposed in a conduit is disclosed. The method includes the steps of measuring the length of a communications element being disposed within the conduit, placing a mark on the conduit each time a pre-determined length of the communications element is disposed within the conduit, and measuring the distance between the marks on the conduit. The excess length is determined by comparing the distance between the initial mark and the subsequent mark on the conduit to the measured length of the communications element disposed within the conduit. To control the excess length ratio, the conduit may be stretched, or process parameters related to formation of the conduit may be changed.
    Type: Grant
    Filed: July 7, 1998
    Date of Patent: May 23, 2000
    Assignee: Alcatel
    Inventors: Richard T. Robinson, James J. Puzan
  • Patent number: 6056526
    Abstract: A tool for molding the surface of a resin sealant deposited within a generally U-shaped groove formed by two overlapping pieces that includes an elongated member shaped and dimensioned to fit within the groove and contact the surface of the sealant.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: May 2, 2000
    Assignee: 3M Innovative Properties Company
    Inventor: Shinobu Sato
  • Patent number: 6051896
    Abstract: A molding machine includes a drive unit for rotating and linearly moving a movable body. The drive unit includes a linear motor and a rotary motor. The linear motor includes a linear movement body having moving-side magnetic-pole portions and supported in an axially movable manner and a stationary body having stationary-side magnetic-pole portions adapted to linearly move the linear movement body. The linear movement body has moving-side inclined surfaces on which part of the moving-side magnetic-pole portions are disposed. The stationary body has stationary-side inclined surfaces which face the moving-side inclined surfaces and on which part of the stationary-side magnetic-pole portions are disposed. The rotary motor is incorporated into the linear movement body and is adapted to rotate an output shaft connected to the movable body.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: April 18, 2000
    Assignees: Nissei Plastic Industrial Co. Ltd, Misso Electric Company
    Inventors: Hiroshi Shibuya, Satoshi Nishida, Tokuzou Sekiyama, Satoru Matsubara, Atsushi Koide
  • Patent number: 6050798
    Abstract: A rotary tablet press has a rotating mold table and top and bottom plungers, which can move reciprocally in plunger guides, coaxially with the molds. The reciprocating motion of at least the bottom plungers is cam-controlled and these plungers are acted upon by a damping element to prevent an overshoot of their movement. To ensure an action which is as free from wear and is as maintenance-free as possible whilst maintaining constant damping of the bottom plungers, it is proposed according to the invention that the damping element consists of at least one magnetic element which acts on the plungers.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: April 18, 2000
    Assignee: Kilian & Co. GmbH
    Inventor: Dietmar Konig
  • Patent number: 6033198
    Abstract: A method for making micromagnets and magnets with a micro-polarization pattern on at least one surface thereof.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: March 7, 2000
    Assignee: Eastman Kodak Company
    Inventors: Edward P. Furlani, Syamal K. Ghosh, William J. Grande
  • Patent number: 6019587
    Abstract: A stamper plate attaching/detaching device of an injection mold for forming an optical disc substrate wherein a stamper plate is supported in a cavity which is formed by a cavity side disc cavity plate, a movable disc cavity plate, and a cavity ring. The stamper plate attaching/detaching device is equipped with a section for holding the outer circumferential rim of the stamper plate by means of the inner circumferential rim of the cavity ring, which inner circumferential rim is larger than the outer diameter of the stamper plate. A plurality of pairs of permanent magnets, which have magnetic poles in parallel with respect to a central line are buried, with phase differences, on the same radial line of the cavity side disc cavity plate and the movable disc cavity plate. The cavity ring rotates between a first angle position and a second angle position in relation to the cavity side disc cavity plate and the movable disc cavity plate.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: February 1, 2000
    Assignee: Seikoh Giken Co., Ltd.
    Inventors: Mitsuo Takahashi, Katsuyuki Yasuda
  • Patent number: 6012471
    Abstract: An automated means for hydrating and packaging a molded hydrophilic contact lens in one of the mold parts used to mold the lens is provided in which a first robotic assembly removes a plurality of contact lens molds from a production line carrier, each of the lens molds having a contact lens adhered therein. The first robotic assembly transports the molds to a first staging area where the lens molds are sandwiched between a lens mold carrier and a top chamber plate to form a first hydration carrier. The hydration carrier is then transported through a plurality of flushing or extraction stations wherein fresh deionized water is introduced into the hydration chambers at each hydration station to flush leachable substances from the hydration chamber. At each flushing station, fresh deionized water is introduced into the hydration chamber to remove previously extracted impurities and the products of hydrolysis.
    Type: Grant
    Filed: August 14, 1996
    Date of Patent: January 11, 2000
    Assignee: Johnson & Johnson Vision Products, Inc.
    Inventors: Olin W. Calvin, Mark E. Schlagel, Darren S. Keene, Ture Kindt-Larsen, Craig W. Walker, Wallace A. Martin, John C. Heaton
  • Patent number: 6000922
    Abstract: A molding assembly for producing a magnetic development roller having relatively precise magnetic development fields for use in an electrostatographic reproduction machine to develop a latent image recorded on a photoconductive member of the machine. The molding assembly includes a cylindrical member having a first end, a second end, a first radius, and a shell portion. The shell portion includes an outer surface, and an inner surface defining a molding cavity that has a second radius corresponding to an outer radius of a magnetic development roller molded within the molding cavity. The molding assembly also includes a plurality of circumferentially spaced channels formed within the shell portion, with each channel of the plurality having generally parallel walls, and being located immediately adjacent the inner surface of the shell portion for containing a permanent magnet suitable for inducing a magnetic field in a magnetic development roller molded within the molding cavity.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: December 14, 1999
    Assignee: Xerox Corporation
    Inventors: Jennifer R. Wagner, Moritz P. Wagner
  • Patent number: 5996196
    Abstract: An improved apparatus for adapting speed, in particular for nippers (1) which can be made to travel along a rail arrangement (3), is distinguished by the following featuresa rotating and electrically conductive eddy-current body (17), preferably designed in the form of an eddy-current wheel or an eddy-current cylinder, is provided,the guide rail arrangement (3) runs at least over and away from a partial region of the eddy-current body (17) with a tangential component,on the carriages (1) which can be made to travel along the guide rail arrangement (3) there is provided or can be excited at least one magnet (7a, 7b), which is arranged on the side facing the eddy-current body (17) and, in the region of the eddy-current body (17), can be moved over and away from the eddy-current body (17), with an air gap being formed.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: December 7, 1999
    Assignee: Bruckner Maschinenbau GmbH
    Inventors: Jurgen Breil, Gunter Oedl, Paul Lindner, Ulrich Ruhlemann, Bernd Sieber
  • Patent number: 5993184
    Abstract: A bonding tool assembly (10) for supporting a composite part structure (11) during fabrication and curing processes, includes a bonding tool (12) and a plurality of fairing bars (14). The bonding tool (12) contains a support surface (16) upon which a composite part structure (11) is placed. The plurality of fairing bars (14) are placed completely around the periphery of the composite part structure (11) providing lateral support. The fairing bars (14) each contain a mating surface (18) which is placed directly upon the support surface (16) of the bonding tool (12). Each mating surface (18) contains a plurality of extended indexing protrusions (20) which form a distinct pattern and are secured by threaded fasteners (21). The support surface (16) contains a plurality of indexing recesses (22) that are configured to form the same pattern as the indexing protrusions (20) such that the fairing bars (14) and the bonding tool (12) are matable.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: November 30, 1999
    Assignee: The Boeing Company
    Inventor: Christopher J. Morrow
  • Patent number: 5979307
    Abstract: A double-belt system for processing viscous melts includes a driven upper belt having a lower working run, and a driven lower belt having an upper working run spaced beneath the lower working run to form a gap therewith for receiving a viscous melt. A gap-adjusting mechanism includes upper rollers engaging an upper surface of the lower working run, and lower rollers engaging a lower surface of the upper working run. A distance between the upper rollers and lower rollers is adjustable to vary a size of the gap. A compensation mechanism is disposed over the lower working run to apply an upward force thereto for pulling the lower working run against the upper rollers, thereby resisting sagging of the lower working run. At least one delivery mechanism applies a temperature-controlled liquid across an entire width of the lower working run for controlling a temperature thereof. The liquid is extracted by an extraction mechanism disposed downstream of the delivery mechanism.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: November 9, 1999
    Assignee: Santrade Ltd.
    Inventors: Stefan Brauer, Werner Huber, Klaus Schafer
  • Patent number: 5939007
    Abstract: A method for manufacture of a fiber reinforced composite spar for a helicopter rotor blade including upper and lower sidewall regions and forward and aft conic regions. Constant width crossplies and unidirectional plies are stacked and arranged to form crossply and unidirectional laminates. The composite spar is manufactured via a vacuum forming technique which includes forming the composite laminates directly over an inflatable mandrel assembly. Regarding the latter method, a spar forming apparatus is used to position and manipulate the mandrel assembly as composite laminates are laid. The spar forming apparatus includes first and second pedestal supports being suitably configured so as to facilitate formation of the butt joints in the conic regions of the composite spar.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: August 17, 1999
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Nicholas Iszczyszyn, Allen E. Trudeau, David A. Kovalsky
  • Patent number: 5912020
    Abstract: A process for operating an injection molding machine with a stationary die plate on a machine bed and a movable die plate, which die plates are lockable during an injection process by magnetic closing elements, the process including the steps of moving the movable die plate toward the stationary die plate to close a mold, simultaneously moving a structural component part enclosing one of the die plates toward one end to a distance of a few millimeters from the other of the die plates, locking a drive of the movable die plate, activating electromagnets arranged at the structural component part enclosing the one die plate by supplying current, adjusting generation of electromagnetic closing force relative to energy level and duration in dependence on an injection process, and at the end of an injection cycle, moving the movable die plate and the structural component part enclosing the one die plate into an end position in which a free space is formed, so that the free space above the machine bed between the die
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: June 15, 1999
    Assignee: Mannesmann Aktiengesellschaft
    Inventor: Otto Grunitz
  • Patent number: 5855931
    Abstract: A vacuum forming apparatus to allow a tray containing a sheet, to be molded into a prescribed shape, to be moved manually in a very rapid manner in a rearward diagonal upward direction from a horizontally positioned vacuum table that is at one level into horizontal engagement with a heating element that is at a higher level, When in this latter position the tray is retained by a magnet until the sheet is heated to a moldable condition. The tray is then manually withdrawn from the magnet without harm to an operator's fingers while the tray is being moved rapidly in a forward diagonal downward direction away from the heating element into engagement with the vacuum tables In this position the moldable sheet is formed into the prescribed molded shape. To accomplish this very rapid diagonal movement of the tray parallel linkages are employed that are each pivotally connected to the rear central portion of the tray at one end and to a post at its other end.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: January 5, 1999
    Inventors: Nathaniel Howard Lieb, Joseph Alexander Lieb
  • Patent number: 5800839
    Abstract: A plastic magnet injection molding machine comprising a pair of exciting coils respectively embedded into a fixed plate and a movable plate along with respective seats and a metal mold including ferromagnetic central members and non-magnetic peripheral members is provided. With such an arrangement, the machine can anisotropically process magnet powder with enhanced efficiency by energizing the coils. Both the fixed plate 2 and the movable plate 4 of the machine are made of ferromagnetic metal. The exciting coils 7, 8 are respectively embedded into the plates at the oppositely disposed sides thereof along with the non-magnetic annular seats 9, 10 surrounding the respective exciting coils. The fixed mold 12 and the movable mold 13 of the metal mold 11 of the machine include respective central members 14, 15 made of ferromagnetic metal. The central members 14, 15 of the fixed and movable molds are respectively made to abut corresponding central portions 2a, 4a of the fixed plate 2 and the movable plate 4.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: September 1, 1998
    Assignee: Nissei Plastic Industrial Co., Ltd.
    Inventors: Yoshiaki Kudo, Haruo Okada, Fumihiko Kobayashi
  • Patent number: 5798122
    Abstract: A stamper plate mounting device for an injection mold for making an optical disc substrate. A stamper plate is detachably supported in a cavity hollow which is formed between a cavity side disc cavity plate and a movable disc cavity plate of the injection mold for making an optical disc substrate. A central hole is provided at the center of the disc cavity. The stamper plate mounting device has (1) means for holding the inner circumference of the stamper plate which has, on one end thereof, a flange for holding the inner circumference of the stamper plate and which is precisely fitted in the central hole from the other end thereof, and (2) permanent magnet which is buried in the bottom surface of the central hole or in the other end of the means for holding the inner circumference of the stamper plate and which has a magnetic pole in the axial direction.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: August 25, 1998
    Assignee: Seikoh Giken Co., Ltd.
    Inventor: Mitsuo Takahashi
  • Patent number: 5782177
    Abstract: A roller arrangement has a magnetic circuit that includes two rollers. The magnetic circuit consists of a cylindrical magnetic core, several poles axially distributed on the magnetic core, a cylindrical exciter and control windings arranged between these poles, a magnetic shell that encloses the whole circumference of one roller and is made of two parts separated by a ring-shaped secondary air gap, and a continuous magnetic shell in the axial direction arranged at the outer circumference of the other roller. When used to process webs of material in the textile, paper, plastic and metallurgical industries, this electromagnetic roller arrangement achieves high quality standards with a high productivity.
    Type: Grant
    Filed: October 20, 1996
    Date of Patent: July 21, 1998
    Assignee: EMS Elektromagnetische Systeme GmbH
    Inventor: Hans-Jochen Karl Max Rindfleisch
  • Patent number: 5780079
    Abstract: An apparatus for molding a connector includes a stationary body, a moving body, a first and a second blocks detachably fixed to the moving body, and a core block having at least one core. The first block has at least one hole and the second block has at least one through-hole corresponding to the first hole. When the molding apparatus is closed, the stationary body, the moving body, and the first and the second blocks cooperate to define a cavity which will be filled with a molten plastic material and a leading end of the core fits through the through-hole of the second block and into the hole of the first block.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: July 14, 1998
    Assignee: Daewoo Telecom Ltd.
    Inventor: Ho-kyung Lee
  • Patent number: 5772161
    Abstract: Brackets for holding a porous tube in a fixed position in a surrounding production mold material, which production mold is used in non-pressurized slip casting for forming vitreous china products, and to molding systems in combination with the brackets. The bracket is angled to provide first and second leg portions of elongated dimensions. The first leg portion is comprised of a magnetic material for removably adhering to magnets embedded in a case mold section for forming the production mold. Thus, the elongated dimension of the first leg portion corresponds to that which provides an adhering relationship to the embedded magnet. The second leg portion comprises a receptacle for holding a porous tube. In one embodiment of the invention, the receptacle is an aperture whereby the porous tube is threaded. In another embodiment, the receptacle is a depression whereby the porous tube snaps into position.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: June 30, 1998
    Inventor: Douglas N. Livingston
  • Patent number: 5766641
    Abstract: The improved upper magnetic plate for anchoring molds, is constituted by a body made of steel with high magnetic permeability in which recessed seats are provided for accommodating coils adapted to generate an attracting magnetic field, the improvement consisting in that the coils are constituted by turns of wire made of a material such as a fluorocarbon resin perfluor alkoxy (PFA) and wrapped by a peripheral containment lapping made of an adhesive tape which has a vitreous base; the coils are arranged in the corresponding recessed seats and are locked therein by a thermosetting silicone containing filling material which is initially inserted in the plastic and malleable state; the seats can be closed in an upward region with plates made of diamagnetic material.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: June 16, 1998
    Assignee: Rivi Giovanni & C. S.n.c.
    Inventors: Giovanni Rivi, Roberta Rivi, Davide Rivi
  • Patent number: 5762967
    Abstract: A elastically and reversibly deformable rubber mold for producing powder compacts is made of a material at least a part of which is a mixture of rubber and magnetic powder. In use, this rubber mold filled with the magnetic powder and subjected to a magnetic field and pressure with punches, thereby compressing the powder to form powder compact. This makes the distribution of magnetic field in the cavity of the rubber mold more homogeneous, and therefore, the distortion, cracking and chipping caused by inhomogeneity of the distribution of the magnetic field are reduced, so that the shape of the resultant powder compact is closer to the end product.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: June 9, 1998
    Assignee: Intermetallics Co., Ltd.
    Inventors: Masato Sagawa, Hiroshi Nagata, Toshihiro Watanabe
  • Patent number: 5733580
    Abstract: A die for extrusion molding a resin bonding magnet. In the production of the magnet, a molten mixture of a magnetic powder and a resin are introduced into a cavity between an outer die and a mandril to which a magnetic field is applied. A steep temperature gradient along the die axis direction of the molten mixture and the cavity is achieved by making the outer die of a multiple layer structure along the die axis direction, utilizing two or more axially adjacent blocks or sheets made of the same or different materials whereby fluidity of the molten mixture is sufficiently high at the inlet of the cavity to enable the magnetic powder in the molten mixture to be sufficiently orientated in the direction of the magnetic field and then the molten mixture is cooled to a solidified state so that the orientation of the magnetic powder is not disturbed, thereby producing a magnetic having high magnetic properties.
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: March 31, 1998
    Assignee: Seiko Epson Corporation
    Inventors: Ken Ikuma, Masaaki Sakata, Koji Akioka, Tatsuya Smimoda
  • Patent number: 5720985
    Abstract: In order to form separate particles from a flowable mass, the flowable mass is fed through a pipe and extruded through holes formed along a longitudinal axis thereof. The pipe is oscillated by an agitator in a direction transversely of the longitudinal axis to cause the extruded mass to be sheared-off in the form of particles. Stop members can be positioned adjacent respective sides of the pipes to be contacted by the pipe and thereby define change-of-direction points for the pipe during its oscillation. The agitator may include piezoelectric ceramics attached to the stop members.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: February 24, 1998
    Assignee: Santrade Ltd.
    Inventor: Michel Roche
  • Patent number: 5690969
    Abstract: A center position device for a mold includes an outer housing, and an inner housing. An annular permanent magnet is fitted in the inner housing and covered by a disc secured with washers to close up flat an open lower side of the outer housing. The plural annular magnetic bands are formed in the lower side to be attracted to a mold. The outer housing has a center tubular wall for engaging a sleeve tubular bolt, and a headless tubular bolt engaging in a female threaded hole of the sleeve bolt. A correct pin is fitted in a lower center hole of the headless bolt. A wrench screws the headless bolt to move the correct pin to protrude in an injecting hole of the mold so that after the device is fitted in a threaded rod hole of an injecting machine, the injecting injecting hole of the mold is correctly aligned to the injecting hole of a threaded rod of the machine.
    Type: Grant
    Filed: April 15, 1996
    Date of Patent: November 25, 1997
    Inventor: Chin-Lung Fang
  • Patent number: 5672363
    Abstract: An apparatus for producing a green compact includes a circuit that circulates die assemblies, each of which contains a rubber mold having rubber in at least its side portion. The apparatus also includes a high density filling device that has a feeder for feeding powder into the rubber molds; a pusher or a vibrator or both a vibrator and a pusher; a die press machine configured to impart a compaction force sufficient to produce the green compact to each of the circulating die assemblies in succession; and a device for removing the green compact from each rubber mold. The high-density filling device, the die-press machine and the removing device are successively arranged along the circuit. Each of the circulating die assemblies has sufficient structural integrity to withstand the compaction force because all structure necessary to withstand the compaction force is present in the circulating die assemblies.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: September 30, 1997
    Assignee: Intermetallics Co., Ltd.
    Inventors: Masato Sagawa, Hiroshi Nagata, Hiroo Shirai
  • Patent number: 5662943
    Abstract: The purpose of this invention is to present fabrication methods and equipment for granulated powders whereby, the reaction between the R--Fe--B-type or R--Co-type rare earth containing alloy powders and the binder is controlled, the residual oxygen and carbon content of the sintered products after sintering is reduced, and whereby it is possible to obtain isotropic or anisotropic granulated powders having good powder flowability and lubrication properties when molding. After stirring a slurry of rare earth containing alloy powders formed by adding a binder consisting of water and at least one of either methyl cellulose, polyacryl amide or polyvinyl alcohol, and mixing, oriented liquid droplets are formed by applying a magnetic field to the slurry to orientate the said powder particles and spraying within the chamber of a spray dryer apparatus.
    Type: Grant
    Filed: April 30, 1996
    Date of Patent: September 2, 1997
    Assignee: Sumitomo Special Metals Company Limited
    Inventors: Osamu Yamashita, Tsunekazu Saigo, Seiichi Kohara, Hirokazu Kitayama, Hiroshi Hashikawa
  • Patent number: 5612062
    Abstract: In a means for holding a stamper plate in a molding metal die so that the stamper plate can be easily mounted on and dismounted from the surface of a disc cavity plate, the means comprises the stamper plate having a hole at the center thereof and composed of a ferromagnetic substance, a stamper plate bush having an engaging shaft portion to be engaged with the center hole of the stamper plate in a molding cavity and disposed at the center of the disc cavity plate on the side where the stamper plate is mounted, a magnetic flux generating means disposed in a ring shape around the outer periphery of the engaging shaft portion of the stamper plate bush in the disc cavity plate for generating magnetic flux in a direction vertical to the surface of the stamper plate coupled with the engaging shaft portion, a vacuum hole defined to the disc cavity plate in correspondence to the portion of the stamper plate where no information is recorded for vacuuming the rear surface of the stamper plate, and an air passage define
    Type: Grant
    Filed: May 30, 1996
    Date of Patent: March 18, 1997
    Assignee: Seikoh Giken Co., Ltd.
    Inventor: Mitsuo Takahashi
  • Patent number: 5593700
    Abstract: The invention relates to an apparatus for folding edge sections of molded parts, blanks, or covers provided for them of leather, artificial leather, plastic, or the like, having a sizing plate provided with a cut-out, into which is inserted a pressure plate, the dimensions of the cut-out in the sizing plate corresponding to those of the finished molded part or blank or of a part of it, having a folding plate, on whose side facing the sizing plate, edges are formed for folding over the edge sections of the molded part, blank or cover, and having a base die for accommodating the sizing plate and the pressure plate, the pressure plate inserted into the cut-out of the sizing plate preferably being flexibly supported on the base tool and being vertically movable with respect to the sizing plate and the base die, and the folding plate being retained on a fixing plate, which is vertically movable, for example pneumatically or hydraulically, so as to allow the folding plate to be set down on the sizing plate, as well
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: January 14, 1997
    Inventor: G unter Stilgenbauer
  • Patent number: 5587181
    Abstract: A ferromagnetic cable insertion tube is cantilevered from a polymeric conduit extruder and separates an electrical and/or optical cable being pulled through the conduit from the inner surface of the conduit until it has solidified. A d.c. current source is applied to a coil surrounding the cable insertion tube upstream or downstream of the extruder so as to induce a magnetic flux in the tube and create a north pole at the downstream free end of the tube and a south pole at the upstream free end of the tube. An array of magnets is assembled about the insertion tube at the downstream free end or north pole thereof. The magnets are arranged with their north poles confronting the north pole of the insertion tube so that the repulsive forces between the like poles magnetically levitate the free end of the insertion tube and keep it from sagging into contact with the extruded conduit.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: December 24, 1996
    Assignee: Southwire Company
    Inventors: Steve C. Owens, Richard V. Lovvorn, Albert B. Elder
  • Patent number: 5509635
    Abstract: Formwork with form panels 1 and connecting means, namely clamps 7 and/or bolts 11 includes closed, hollow marginal sections 2 having an abutment web 5 projecting at right angles to a lining skin 4 and extending along the outermost edge of the form panel 1 and serving to be laid tightly against a corresponding abutment web 5 or flat marginal strip 13 of a neighboring form panel. Holding webs 6 of the marginal sections 2 may have depressions 8 for application of clamp points. Oblong perforations or keyholes 10 for inserting connecting bolts 11 are provided side by side, in spaced relationship, longitudinally of the abutment web. The connecting bolts have projections 12 that jut out radially from an end of the bolt and engage behind the edges of the perforations in a locking position. The spacing and size of the perforations 10 corresponds with similar perforations 10 in marginal sections 2 or flat marginal strips 13 of adjacent form panels 1.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: April 23, 1996
    Assignee: Paschal-Werk G. Maier GmbH
    Inventor: Kurt Jaruzel
  • Patent number: 5509794
    Abstract: An apparatus is provided for making molded photointerrupters by using first and second leadframes. The first leadframe carries a plurality of light emitting devices, whereas the second leadframe carries a plurality of light receiving devices. The apparatus includes a molding unit which includes: a lower mold member which supports the first leadframe in a horizontal posture; an upper mold member movable vertically toward and away from the lower mold member; and a pair of side mold members movable laterally toward and away from each other between the upper and lower mold members, one of the respective side mold members supporting the second leadframe in a horizontal posture; wherein the respective mold members forms molding cavities when the mold is closed.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: April 23, 1996
    Assignee: Rohm Co., Ltd.
    Inventors: Nobuyuki Nakamura, Kazunori Fuji
  • Patent number: 5498389
    Abstract: A method and apparatus for lining a branch pipe is provided which can directly achieve an air-tight connection between a pressure bag and a branch pipe liner bag in a simple structure without employing a conventionally required sealed tube. An open end of the pressure bag is attached to a set nozzle made of a magnetic material coupled to a work robot which is movably installed in a main pipe. A branch pipe liner bag, impregnated with a thermosetting resin, is placed inside the pressure bag. The liner bag has a flange which includes a magnetic plate so as to be magnetically connected to the set nozzle by a magnetic force of a magnet provided for the work robot. With the flange being closely contacted to the inner wall of the main pipe around a branch pipe opening, compressed air is supplied into the pressure bag to evert and insert the branch pipe liner bag into a branch pipe.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: March 12, 1996
    Assignee: Shonan Gosei-Jushi Seisakusho K.K.
    Inventors: Takao Kamiyama, Yasuhiro Yokoshima, Shigeru Endoh
  • Patent number: 5494426
    Abstract: The present invention provides an apparatus for shaping deformable materials during molding processes. Such an apparatus includes, among other things, a vibrating wall assembly. The vibrating wall assembly fits the contours of at least a portion of a mold's cavity. The vibrating wall assembly includes a pliable wall positioned within the mold. The pliable wall is positioned such that its outside wall surface is adjacent to a portion of the mold's inside wall surface; and its inside wall surface defines a portion of the geometric configuration of the material passing thereover. The pliable wall is designed to deform from its original shape when a positive or negative pressure is exerted on its inside or outside wall surface. This positive and/or negative pressure is generated, at least in part, by the displacement of a displaceable fluid. This fluid is contained within a chamber. The chamber is in communication with a portion of the pliable wall's outside wall surface.
    Type: Grant
    Filed: February 17, 1994
    Date of Patent: February 27, 1996
    Assignee: Thermold Partners L.P.
    Inventor: Jean-Pierre Ibar