Press Forming Apparatus Having Opposed Press Members Patents (Class 425/406)
  • Patent number: 6471501
    Abstract: A mold for press-molding a resin package body includes a lower mold and an upper mold, wherein the upper mold includes a press plate held in a tiltable manner with respect to a press head used for urging the upper mold against the lower mold and a lock mechanism for locking the press plate. The lower mold includes an inner die carrying a semiconductor device and a resin tablet and an outer die surrounding the inner die in a manner movable up and down with respect to the inner die. In operation, the press plate is first engaged with the outer die in the unlocked state to achieve an exact parallelism with respect to the inner die, and after locking the press plate and melting the resin tablet, the press plate is urged further toward the inner die while simultaneously lowering the outer die such that the space formed by the lower die, outer die and the press plate for accommodating a semiconductor chip is collapsed.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: October 29, 2002
    Assignee: Fujitsu Limited
    Inventors: Yasuhiro Shinma, Muneharu Morioka, Norio Fukasawa, Yuzo Hamanaka, Tadashi Uno, Hirohisa Matsuki, Kenichi Nagashige
  • Publication number: 20020060377
    Abstract: A forming mold for a lens sheet is to be used for molding ionizing radiation curing type resin into the lens sheet by applying the resin in the form of liquid on the upper surface of the forming mold, placing a substrate on the resin and pressing the substrate and the resin against the forming mold from a pressing-starting side of the forming mold to a pressing-finishing side thereof by means of a pressing roller. The forming mold comprises a mold body and a receiving member. The receiving member receives a superfluous amount of the ionizing radiation curing type resin. The receiving member is provided on at least pressing-finishing side of a periphery of the mold body.
    Type: Application
    Filed: November 8, 2001
    Publication date: May 23, 2002
    Inventor: Yukifumi Uotani
  • Patent number: 6391236
    Abstract: The process for forming ceramic tiles comprises depositing a layer of multi-coloured powdery material on a moving transport plane, in order to achieve a predetermined pattern, and subsequently transferring said layer internally of a moulding cavity, due to a movement of the transport plane and a contemporary displacement of the transport plane with respect to the cavity. The forming plant comprises a conveyor belt (2) able on command to perform displacements with respect to the forming cavity. A plurality of silk-screening devices (9) is predisposed to deposit a layer of powdery material bearing a predetermined design on the transport plane. The invention can be especially useful in the production of decorated vitrified stoneware tiles.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: May 21, 2002
    Inventor: Alberto Franceschini
  • Publication number: 20020015752
    Abstract: The present invention provides a precision device molding machine and a molding method to make it possible for an adjustment of parallelism to be performed with a high degree of accuracy and excellent workability. The precision device molding machine includes a parallelism adjustment mechanism held by a supporting plate, a pressure applying plate that is movable up and down, a lower die disposed on the upper surface of the pressure applying plate and an upper die disposed on the parallelism adjustment mechanism. The parallelism adjustment mechanism includes a pressure receiving member, an adjusting plate, a transmitting member disposed between the pressure receiving member and the adjusting plate, a fixed fulcrum and an operating member.
    Type: Application
    Filed: April 25, 2001
    Publication date: February 7, 2002
    Inventors: Kiyotaka Kamohara, Takeyuki Fujii, Hiroaki Kaito
  • Patent number: 6344165
    Abstract: A method and apparatus are disclosed for making a reconsolidated or reconstituted wood product from a charge of wood components and binder using steam injection pressing to consolidate and bind the charge into a mat in which the wood components are bound to each other to form the wood product. The charge is compressed into the mat by operation of at least the one pressing member in the form of a heated movable platen. The method and apparatus are characterized by the pressure being applied to the charge or mat from the steam injection pressing being independent of the compressing force applied to the charge or mat by the pressing member. The invention is particularly adapted to form beams of relatively large cross section, such as for example in excess of 30 mm, preferably larger than 40 mm.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: February 5, 2002
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventor: John D. Coleman
  • Publication number: 20010053394
    Abstract: A device for shape-forming at least one recess in a film-type material features a die with at least one opening, at least one shaping stem that can be introduced into the opening to create the recess by shape-forming, and a clamping facility for holding the film-type material fast between the clamping facility and the die. Counter-stems which are displaceable at least within the die openings are situated in the die, whereby shape-forming regions of the shape forming stems and the counter-stems for clamping the film-shaped material are, at least in part, superimposed on each other.
    Type: Application
    Filed: May 22, 2001
    Publication date: December 20, 2001
    Inventor: Heinz Oster
  • Patent number: 6223561
    Abstract: A press mold for glass substrate includes an upper mold and a lower mold, and a pressure apparatus for applying pressure to the upper mold and the lower mold, for molding a plate-shaped glass substrate having a predetermined thickness between the upper mold and the lower mold. An engaging projected piece is projectingly provided on the side portion of the upper mold, an engaging projected piece supporting portion for supporting the engaging projected piece is provided on the side portion of the lower mold, and an end portion of the upper mold is formed so as to be released from the lower mold with the engaging projected piece as a rotating shaft. Variance in pressure on mold surfaces between the upper mold and lower mold is detected, and a buffer made of material having lower compressive yield strength than material constituting the lower mold is inserted between the lower mold and the pressure apparatus in a position corresponding to the mold surface portion at lower pressure.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: May 1, 2001
    Assignees: NGK Insulators, Ltd., NGK Optoceramics, Ltd.
    Inventors: Masashi Fukuyama, Kazutoshi Tohyama, Masahiro Maeda
  • Patent number: 6189589
    Abstract: In a method and molding apparatus for laminated molded bodies, a thermal-molding felt and a thermoplastic resin sheet, respectively in hot and soft condition, are set or placed on a mold face of cold-pressing-molding lower mold. A cold-pressing-molding upper mold lowers onto the lower mold to press the the thermal-molding felt and thermoplastic resin sheet. Simultaneously, cooling air is supplied to center portion of the thermal-molding felt through a blowing pipe protruding from mold face of the thermal-molding felt side and intruding into the felt accelerating circulation of cooling air and cooling of the thermoplastic resin sheet.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: February 20, 2001
    Assignee: Kasai Kogyo Co., Ltd.
    Inventors: Kazuhiro Tokunaga, Takashi Tsubosaki, Shoichi Itoh, Hisashi Yamada
  • Patent number: 6162376
    Abstract: A lens molding system which uses glass molds to mold polycarbonate blanks. The blanks are preheated, then additionally surface heated, molded, and cooled under pressure.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: December 19, 2000
    Assignee: Mead Opthalmics
    Inventor: Vandenberg Mead, deceased
  • Patent number: 6151917
    Abstract: A press-molding die can manufacture magnetic disks suitable for the zone-texture technique in large quantities and at a low price by forming smooth surface areas and rough surface areas on the surface of the press-molding die. A manufacturing method for this press-molding die is provided. A magnetic-disk glass substrate that has improved CSS properties and allows a lower flying height is formed using this press-molding die. An intermediate layer is formed by sputtering on a die base material. A mask having an aperture is formed on the intermediate layer. The surface of the intermediate layer is roughened by etching in the aperture. A first protective layer is formed by sputtering in the etched portion. After the mask has been removed, a second protective layer is formed on the intermediate layer by sputtering. The surface roughness of the rough surface portion is reflected by the surface roughness of the first protective layer.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: November 28, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kunio Hibino, Makoto Umetani, Hidenao Kataoka
  • Patent number: 6132656
    Abstract: Disclosed herein is a cellulosic composite article and steam injection press methods of making the same by combining a resin binder with cellulosic material to form a mixture and, thereafter, forming a mat from the cellulosic material/resin binder mixture and consolidating the mat in a pressing apparatus under heat, steam, and pressure to form the consolidated cellulosic product. A steam injection platen includes elongated openings for injection of steam to the mat through an adjacent steam distribution plate. The steam distribution plate includes slots in fluid communication with the steam injection platen openings and is disposed over the openings in the steam injection platen to achieve homogeneous and complete steam distribution throughout the mat during consolidation.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: October 17, 2000
    Assignee: Masonite Corporation
    Inventor: William R. Dodd
  • Patent number: 6106269
    Abstract: A vacuum injection press including frame structure defining a sealable molding chamber having a least one access opening by which molded products are removed. Access to the chamber is controlled by a door assembly that is movable between opened and closed positions. Upper and lower bolsters mount first and second mold portions. The lower bolster is mounted for substantially vertical reciprocal movement towards and away from the upper, fixed bolster and a fluid pressure actuator is used to maintain clamping contact between the first and second mold portions when the lower bolster is moved into a clamped position with respect to the upper bolster. An injection molding unit is located outside of the chamber and provides molding compound to a cavity defined by the mold portions. Molding compound is delivered from the injection unit to the cavity defined by the mold portions via an injection nozzle forming part of the upper, fixed bolster.
    Type: Grant
    Filed: July 2, 1998
    Date of Patent: August 22, 2000
    Inventor: Thaddeus Soberay
  • Patent number: 6066615
    Abstract: A tablet of compacted particulate detergent composition has an indentation (39) around a periphery of the face (37) of the tablet. The surface circumscribed by the indentation preferably has higher permeability and is rougher than the surface of the indentation (39) itself. Such a tablet can be made by a process in which a detergent composition is compacted in a mould by at least one die with an elastomeric surface layer (36) on an area which contacts the composition, which layer (36) is surrounded by a rigid rim (30) which forms the indentation (39).
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: May 23, 2000
    Assignee: Unilever Home & Personal Care USA division of conopco, Inc.
    Inventors: Henk Bijl, James William Gordon, Gert van Koppen, Marcel Van der Kraan, Jan Poorvliet
  • Patent number: 6058590
    Abstract: Apparatus and methods for partially embedding a biocompatible material, such as a titanium coil, in the surface of a polymer bone implant to provide a porous coating for bone cells to grow through thereby promoting long term stabilization of the implant. In one embodiment, the coil is wrapped around the implant and placed in a manifold where rollers biased by springs press against the coil. The coil-implant is rotated and heated by a hot gas stream, the rollers-springs pushing the coil into the surface of the implant. In a second embodiment, the coil is compressed and placed onto a needle wire which is placed against the surface of the implant. The point of contact is heated and the implant is rotated with the needle wire creating a channel in the softened polymer and feeding the coil, which is simultaneously stretched, therein. The needle wire then pulls the polymer over a portion of the coil as it passes.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: May 9, 2000
    Assignee: The Johns Hopkins University
    Inventors: Jack C. Roberts, Paul J. Biermann, Amy A. Corvelli
  • Patent number: 6030568
    Abstract: A method for producing a fibre reinforced three-dimensional product comprises depositing of long fibers in a mould consisting of a frame in which a carrier net for the fibers is suspended. The individual layers of a formed plane laminate are positioned in such a manner that only a first end is secured at a frame side. Said first ends are secured at different frame sides. In this manner it is possible, in a pressing procedure giving the product is three-dimensional shape, to obtain a virtually even distribution of the fibres, even in areas which are subjected to the longest move away from the plane original laminate. In this manner sound well-defined properties are obtained in the three-dimensional product formed.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: February 29, 2000
    Inventor: Torben Vestergaard
  • Patent number: 6024905
    Abstract: The present invention describes a device for the discontinuous manufacture of shaped composite articles and an appropriate process.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: February 15, 2000
    Assignee: HP-Chemie Pelzer Research & Development LTD
    Inventor: Colm Doris
  • Patent number: 5989471
    Abstract: A BGA mould assembly which can facilitate high degree of control over the clamping force on BGA substrates of varying thickness. An Independent drive is provided for each of the dual in-line cavity bars which clamp the BGA substrates. The drive mechanism is a wedge press which includes a servo motor, and a linear-conversion mechanism coupled to the servo motor to convert the rotation motion of the motor to a linear movement. An input wedge is coupled to the linear-conversion mechanism such that the input wedge moves correspondingly with the linear movement of the linear conversion mechanism. An output wedge is coupled to the cavity bar and positioned such that a horizontal movement by the input wedge causes the output wedge to move downwards. A roller cage is provided at the top and bottom of the input wedge to reduce friction.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: November 23, 1999
    Assignee: Advanced Systems Automation Limited
    Inventors: Tiang Siong Lian, Soon Chye Lian, Zhen Hua He
  • Patent number: 5945214
    Abstract: A press plate for producing decorative laminate from resin impregnated paper, with alumina particles on its pressing surface, is coated with diborides selected from the group consisting of hafnium diboride, molybdenum diboride, tantalum diboride, titanium diboride, tungsten diboride, vanadium diboride, or zirconium diboride or mixtures thereof for making the press plate resistant to scratching. The preferred diborides are titanium and zirconium. The most preferred diboride is titanium. The color, gloss and surface appearance of laminate pressed with a titanium diboride coated press plate is substantially the same as laminate pressed with the press plate before coating.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: August 31, 1999
    Assignee: Premark RWP Holdings, Inc.
    Inventors: Muyuan M. Ma, Jay T. Oliver
  • Patent number: 5922238
    Abstract: Compositions and methods for replication are described. A method includes: providing a first submaster having a first topography; providing a carrier having a first side and a second side; coating the first side with a first resin having a first viscosity; pressing the first topography against the first resin; replicating the first topography in the first resin as a first replica surface; increasing the first viscosity; releasing the first replica surface from the first topography; providing a second submaster having a second topography; coating the second side with a second resin having a second viscosity; pressing the second topography against the second resin; replicating the second topography in the second resin as a second replica surface; increasing the second viscosity; and releasing the second replica surface from the second topography. The compositions and methods provide advantages in that surface topography is replicated with enhanced overall cost effectiveness.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: July 13, 1999
    Assignee: Physical Optics Corporation
    Inventors: Gajendra Savant, Jack Latchinian
  • Patent number: 5919493
    Abstract: Known fabrication apparatuses, including patterned pinch rollers, molds, etc., are adapted to create articles having a shape characterized by more than six faces of identical size and shape, and by members extending outwardly in three orthogonal dimensions, the articles each including at least a pair of faces which intersect to bound a concave region, each article including a plurality of such concave regions. In certain embodiments, vibrational energy (e.g. ultrasonic or microwave energy) is utilized to aid in article formation.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 6, 1999
    Assignee: Ushers, Inc.
    Inventors: Michael Q. Sheppard, Makuteswara Srinivasan, Richard L. Ponzi, John J. Stobie, Roger P. Sheppard
  • Patent number: 5881443
    Abstract: Apparatus and methods for partially embedding a biocompatible material, such as a titanium coil, in the surface of a polymer bone implant to provide a porous coating for bone cells to grow through thereby promoting long term stabilization of the implant. In one embodiment, the coil is wrapped around the implant and placed in a manifold where rollers biased by springs press against the coil. The coil-implant is rotated and heated by a hot gas stream, the rollers-springs pushing the coil into the surface of the implant. In a second embodiment, the coil is compressed and placed onto a needle wire which is placed against the surface of the implant. The point of contact is heated and the implant is rotated with the needle wire creating a channel in the softened polymer and feeding the coil, which is simultaneously stretched, therein. The needle wire then pulls the polymer over a portion of the coil as it passes.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: March 16, 1999
    Assignee: The Johns Hopkins University
    Inventors: Jack C. Roberts, Paul J. Biermann, Amy A. Corvelli
  • Patent number: 5843491
    Abstract: A roti clapper is provided including a pair of clamping members pivotally coupled at the bottom ends thereof. Next provided is a solenoid connected to the clamping members for closing the same upon the actuation thereof. Control circuitry is provided for actuating the solenoid a predetermined amount of times upon the closing of an associated switch.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: December 1, 1998
    Inventor: John E. Newton
  • Patent number: 5786003
    Abstract: The improved half-die comprises a concave rigid support describing a chamber superiorly closed by an elastic wall and containing a pressurised incompressible fluid. The chamber internally comprises a lattice which divides it into a plurality of cavities which are interconnected by means of communication holes; each cavity is occupied by an obturator which is solidly anchored to the elastic wall and free of the walls of the relative cavity. Should there be a loss of fluid pressure, which can occur only through an inlet hole and an outlet hole used for introducing the fluid during a construction phase of the half-die and subsequently closed, the obturators prevent any further fluid from exiting during a pressing operation and enable the half-die to keep working.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: July 28, 1998
    Assignee: F.D.S. S.r.L.
    Inventor: Ivano Debbia
  • Patent number: 5776511
    Abstract: An apparatus for continuously forming plate articles which can be installed in a low factory building, which can sufficiently press, heat and dry a mixture of materials, and which can manufacture surface-treated plate articles with high efficiency at a low cost. The mixture is introduced into an introducing chamber, and at the same time, decorative films are fed into the introducing chamber on both sides of the mixture. A semi-finished product made up of the mixture and decorative films are fed between a pair of horizontal hot plates to form it into a strip article. The strip article thus formed is cooled and cut into a plurality of plate articles provided with decorative layers on both sides.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: July 7, 1998
    Assignee: Miki Tokushu Paper Mfg. Co., Ltd.
    Inventors: Teruhisa Miki, Tsuyoshi Sano
  • Patent number: 5776402
    Abstract: An injection molding machine includes a stationary platen having a first mold half, at least one movable platen having a second mold half for forming a mold with the first mold half, tie bars for guiding the movable platen relative the stationary platen, and an injection unit for injecting molten resin into the mold. For at least one of the stationary and movable platen, a force is generated during clamping having a first direction. The at least one stationary and movable platens includes a first wall having edges and a central area and at least first and second sides, wherein the first side is adapted to be positioned nearest the clamping operation. The platen further includes a second wall spaced from and substantially parallel to the first wall, wherein the first and second walls extend substantially transverse to the first direction of the force.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: July 7, 1998
    Assignee: Husky Injection Molding Systems Ltd.
    Inventor: Pierre Glaesener
  • 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: 5736041
    Abstract: A filter element for use in a filter holder having a sealing surface and method of making a filter. The filter being made of a folded material of manufacture having a circumferential sealing rim and having a spacer to keep open the folded areas. The spaced being formed by at least one cover layer folded with the filter. The sealing rim being formed to be received in the sealing surface and with the folds formed by at least one cover layer and the filter material both along and transverse to the folds around the circumference of the at least one cover layer and filter material being pressed into said sealing rim at a temperature above the softening temperature of at least a thermoplastic resin provided in at least one of the layers of the cover and filter material.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: April 7, 1998
    Assignee: Moldex-Metric, Inc
    Inventor: Martin Skov
  • Patent number: 5714177
    Abstract: The invention relates to a die set for the manufacture of specially shaped ceramic tile. A main component of the die set is a lower punch made of rigid material, on whose upper surface a profile is cut which is suitably shaped to form the front face of the ceramic tile, including the contoured side. The punch has a complete, continuous coating of synthetic resin or rubber bonded to it, with the punch's upper surface defining the form of the front face of the ceramic tile. The coating is continuous and covers the lateral portion of the profile that forms the shaped side, and continues on the upper most part with a horizontal edge which is turned externally with respect to the profile, upon the upper lateral surface of the body of the punch; furthermore a rigid body is fixed above the upper lateral surface, which acts to clamps the horizontal extension of the coating against the lateral surface.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: February 3, 1998
    Inventor: Pellegrino Rossi
  • Patent number: 5700496
    Abstract: A backplate assembly for supporting the molds of blowmolding machines having plural molds wherein the backplate assembly consists of two planar plates having a resilient elastic compressible cushion disposed therebetween to permit limited self-adjustment of the plates as determined by pressure produced upon the mold halves closing. The cushion is formed by an elongated spirally configured elastic resilient strand located within recesses formed in the plates, and the configuration of the strand may be related to the distribution of compressive forces imposed on the backplate assembly.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: December 23, 1997
    Inventor: Charles R. Bacon
  • Patent number: 5686038
    Abstract: A method and apparatus for resin transfer molding composite materials that emit volatiles. The apparatus includes an RTM tool, a constant displacement injection pump, a heater connected to a power supply, one or more porous tool inserts, and one or more articulated tool inserts. The porous tool inserts are mounted within the RTM tool and allow volatiles produced during processing to flow through the inserts. The volatiles are drawn through the porous tool inserts and out through an exhaust port. The articulated tools are also mounted within the interior of the RTM tool. The articulated tools are movable in order to increase and decrease the volume of the RTM tool. As volatiles are emitted, the articulated tools are moved in order to decrease the volume of the tool. The articulate tools are also used to apply a consolidation force to the resin and fiber-reinforced preform within the tool.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 11, 1997
    Assignee: The Boeing Company
    Inventors: Stephen Christensen, Michael A. Walker
  • Patent number: 5682591
    Abstract: A method of making a metal composite part by compacting a metal powder composition in a die whose wall surfaces have been electrostatically coated with a lubricant, thereby eliminating or reducing a lubricant in the metal powder composition, resulting in a metal composite having greater density and strength. The method further includes providing an electrostatic charge to the metal powder composition. A powder metallurgy apparatus is also provided.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 28, 1997
    Assignee: Quebec Metal Powders Limited
    Inventors: Ion I. Inculet, James D. Brown, G. S. Peter Castle, Peter Hansen
  • Patent number: 5658608
    Abstract: The invention provides a device for compacting and separating material. The main components of the device are a hollow housing sealable at one end by a removable cap, a cylindrical housing having a threaded exterior for compressing material within the housing movably mounted to the other end of the hollow housing, and a plurality of separating members slidably positioned within the hollow housing. A portion of material is placed within the hollow housing, followed by a separating member, followed by another portion of material, and optionally another separating member. After the material is compressed within the hollow housing, the end is opened and the compressed portions of material are removed from the hollow housing, The compressed portions of material are maintained separated from one another by the separating members, An alignment and guidance system may be employed to maintain separating members in a level manner during operation.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: August 19, 1997
    Inventor: Robert J. Klefbeck
  • Patent number: 5645783
    Abstract: Molding apparatus including a thermally transmissive mold liner and a packing nub having a spring biased positioning pin for uniformly forming and molding grinding wheels. A locating pin at a bottom mold plate secures the liner to the bottom plate and indexes a threaded arbor and the nub to the pin. The positioning pin positions the nub to the arbor. Upon leveling a charge of a mixture of resin adhesive and abrasive material, a top plate is concentrically fitted to the nub and liner. The pressing of the top plate and nub with the bottom of the nub aligning with the bottom of the positioning pin provides uniform compaction. The liner supports the molded green wheel during curing and after which the wheel is removed.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: July 8, 1997
    Inventors: Naseem A. Ansari, Omar R. Ansari
  • Patent number: 5635219
    Abstract: A slide opening system for a tool system for compacting powdery materials having an upper ram, a lower ram and an insertable tool frame in which punch holders are moved relative to the base-plate from their filling position downward to the pressing position and from the pressing position upward to the ejection position which corresponds to the filling position (ejection method), and a further punch holder is moved from the filling position downward to the pressing position and from the pressing position downward to the withdrawal position (withdrawal method), with plungers acting on slides for releasing the withdrawal plate for the withdrawal motion, whereby the plungers of the slide opening system each act on a preferably stepped slide via a pivoted lever in the form of a cam disk with leverage that changes during the opening process and at least one roll located on the lever.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: June 3, 1997
    Assignee: Dorst-Maschinen- und Anlagenbau Otto Dorst und Dipl.-Ing. Walter Schlegel GmbH & Co.
    Inventors: Josef Schrofele, Roland Fleissner
  • Patent number: 5626886
    Abstract: A transfer molding machine for encapsulation of semiconductor devices with a resin comprises a clamping mechanism with an electrically actuated toggle mechanism, a pair of upper and lower sections of a transfer mold, and at least one compensation unit including upper and lower plates and a plurality of elastic members held between said upper and lower plates. The compensation unit is arranged either between the upper stationary platen and the upper mold section or between the moving platen and the lower mold section to compensate the dimensional errors in the mold sections and clamping mechanism.
    Type: Grant
    Filed: February 21, 1995
    Date of Patent: May 6, 1997
    Assignee: Dai-Ichi Seiko Co., Ltd.
    Inventor: Masaaki Ishii
  • Patent number: 5609816
    Abstract: In a process for preparing a molding from fibers and/or flakes and thermoplastic binder, the material is introduced into a mold, compacted, and bonded by thermal effect. To make it possible to introduce the material rapidly and such that a consistently equal density or a density changing in a defined pattern will be obtained, a filling contour calculated for the given molding is formed by a first mold disk set. After filling the filling contour, a first finished contour mold is positioned against it. A second mold disk set, whose disks are displaceable between the disks of the first mold disk set and form the second finished contour of the molding, is subsequently displaced in the first mold disk set against the first finished contour mold, while the material present in the filling contour is compacted. The material is subsequently fixed by thermal effect.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: March 11, 1997
    Assignee: Schaeffler Teppichboden GmbH
    Inventors: Wulf Thoma, Ekkehard Labitzke
  • Patent number: 5599566
    Abstract: A punch is oscillatably supported by a layer of elastic material which forms one of the walls of an intermediate even partition of a non-compressible fluid such as oil. The opposite wall of this partition includes the plane of an isostatic support to which the punch is fixed by movable, axially sliding equipment.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: February 4, 1997
    Inventor: Fabio Casolari
  • Patent number: 5591461
    Abstract: A powdery sample forming apparatus, which is used for measuring a water content of powder and in which all operations from powder supply to powder discharge are automated, includes a vertically elongated housing which has a sample inlet port at an upper portion thereof and a sample discharge port at a lower portion thereof. A porous plate or a screen plate divides the housing into longitudinal compartments and a gate opens and closes a bottom portion of one of the divided compartments. A vertically movable press member in the compartment having the gate presses the sample against the gate. A window is formed in a side wall of the compartment having the gate and can be cleaned with air under pressure or a vacuum.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: January 7, 1997
    Assignee: Nisshin Flour Milling Co., Ltd.
    Inventors: Takashi Komatsu, Hiroomi Uehara, Syuji Shinkai
  • Patent number: 5587187
    Abstract: The invention concerns a brick press which can be operated manually to produce coherent bricks from appropriate loose material. The brick press has a brick pressing chamber (12) which can be charged with the loose material. The pressing chamber is defined by side walls (16), a bottom wall in the form of a movable platen (18) and a top wall in the form of an openable and closable lid (20). A lever mechanism (40) can be operated, when the lid is closed, firstly with a cam action to move the platen towards the lid so as to apply initial compression to loose material in the pressing chamber and thereafter with a levering action to apply final compression to the initially compressed material in the pressing chamber.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: December 24, 1996
    Inventor: Marthinus J. Benade
  • Patent number: 5567373
    Abstract: The invention provides a method and apparatus for manufacturing a liquid container having an enclosed space within an inner wall of the liquid container, the enclosed space filled with a plurality of porous members. The plurality of porous members include a plurality of inner porous members and a plurality of outer porous members. The method includes the step of packing the porous members into the enclosed space so that the inner porous members only contact and press against other inner porous members and/or outer porous members, and the outer porous members contact and press against the inner porous members and the inner wall of the liquid container. The method also comprises a step of compressing the porous members. The apparatus has compressing means for compressing the porous members and packing means for packing the porous members into the liquid container.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: October 22, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Sato, Hiroshi Sugitani, Tsuyoshi Orikasa, Toshihiko Ujita, Masahiko Higuma, Yasuo Kotaki, Jun Hinami
  • Patent number: 5478225
    Abstract: A tool set type powder compacting press is proposed which is simple in construction and reliable. The driving shafts coupled through coupling shafts with the tool holding plates, that is, the punch plates are provided at the press side. Further, coupling mechanisms having removable joints are provided between the driving shafts and the punch plates. No driving device is provided at the tool set side. Since the driving mechanisms are integrated at the press side, the whole arrangement will have a simple construction. This will also increase the reliability.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: December 26, 1995
    Assignees: Sumitomo Electric Industries, Ltd., Kohtaki Precision Machine Co., Ltd.
    Inventors: Kenji Takeuchi, Yoshiaki Horie, Hiromoto Sei
  • Patent number: 5461928
    Abstract: A device for compressing a specimen which includes a fixed support assembly supporting the specimen and a mobile piston assembly which compresses the specimen. The support assembly and the piston assemblies have respective first and second planar faces in contact with and supporting the specimen. The specimen is compressed between the first and second planar faces. Each of the supported piston assembly include a swivel joint and a part of the mobile piston assembly has the first planar face slidably engaging a part of the fixed assembly having the second planar face.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: October 31, 1995
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Raymond Azzolini, Pierre Rochard
  • Patent number: 5458476
    Abstract: A method of shaping elongated composite structures of a resin matrix reinforced with randomly broken fibers oriented in transverse and non-transverse directions with respect to the longitudinal axis of the structure is implemented by a computer aided apparatus for forming the structure. The apparatus is provided with a heated fixed forming tool, a means for stretching the structure from each end and means associated with the forming tool for separately holding each formed component length of the structure in place against the forming tool. The formed structure is characterized by the particular orientation of the fibers in the transverse and non-transverse direction after the structure is formed.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: October 17, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Steven J. Medwin
  • Patent number: 5427599
    Abstract: An optical storage disk consists of a glass substrate (1) into which guide tracks (3) for servo-controlling the focussed light beams are directly stamped by a hot stamp process. After stamping, the glass substrate is thermally quenched in the stamping device to increase its breaking resistance through thermal curing. In order to achieve uniform guide tracks over the entire surface of an optical storage disk, flexible stamp stencils (35) in a flexible holder (34) are used whose curvature can be changed by applying hydro-static pressure. Suitable stamp stencils consist of monocristalline silicon disks with surface hardening, or of metal disks, structured in photolithographic processes. The stamp lands are made with bevelled edges to facilitate the separating of stamp and glass substrate after cooling.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: June 27, 1995
    Assignee: International Business Machines Corporation
    Inventors: Johann Greschner, Gerhard Schmid, Werner Steiner, Gerhard Trippel, Olaf Wolter
  • Patent number: 5417730
    Abstract: A press molding apparatus produces an optical element of high precision efficiently in such a way that an upper mold member is at least slidably operated relative to a shell mold, and the force of an operation member to be applied onto the upper mold member is exerted through the center of the upper mold member when press molding the glass material and releasing the molded optical element. The press molding apparatus in which glass material in a softened state is pressed within a shell mold using mold members slidable with the shell mold and an optical functional surface corresponding to a molding surface of each of the mold members is formed on the glass material is constructed such that at least the upper mold member slidable within the shell mold is operated via a pressing plate by an operation member so as to exert a pressure parallel to a sliding face of the shell mold at its center, and a hook member hung on the operation member is interlocked via alignment means so as to exert a central lifting force.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: May 23, 1995
    Assignee: Canon Kabushiki Kaisha
    Inventors: Isamu Shigyo, Hiroyuki Kubo, Nobuaki Onoda, Nobuyuki Nakagawa
  • Patent number: 5375515
    Abstract: A compact disc marking apparatus 10 comprising a top portion 12, a bottom portion 14 attached with a pivot or shaft 16 to the top portion 12, and a locking handle 18. A recess 12-2 receives the handle 18 when it is vertically rotated to a lowered position, when marking a disc. The bottom portion 14 comprises a first recess 14-1 and a second recess 14-2. The locking handle 18 comprises a lever member 18-1, an engaging/compression member 18-2, a flanged engaging member 18-3 (FIG. 2 ), a pivot 18-4 (FIG. 6 ), a flanged portion 18-5, and a rounded portion 18-6 (FIG. 9 ).
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: December 27, 1994
    Inventor: William T. Morgan
  • Patent number: 5330347
    Abstract: A moulding press for a moulding device which comprises two mould halves movable relative to each other. The mould halves are connected by a pair of spaced joint linkages located opposite one another. Each joint linkage includes two pivotable arms which are connected in a hinge-like manner to each other and to a respective first and second plate. Control arms engage the joint linkages and are movably coupled to a control element. Movement of the control element will result in link motion of the control arms and cause movement of the mould halves toward each other or away from each other.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: July 19, 1994
    Assignee: AMCO Holding B.V.
    Inventor: Gerardus J. M. Ten Vaarwerk
  • Patent number: 5330346
    Abstract: The invention relates to a die for ceramic tiles. The die includes two semi-dies between which the material to be compacted is pressed. One of the half-dies is connected to an elastic wall. An external face of the elastic wall has the imprint of one of the faces of the tile to be manufactured. The elastic wall is positioned over and in contact with a cavity that is filled with an incompressible liquid. The cavity is divided into portions by a lattice.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: July 19, 1994
    Assignee: Sichenia Gruppo Ceramische S.p.A.
    Inventor: Italo Scardovi
  • Patent number: 5320516
    Abstract: At least two flexible belts each having a pair of longitudinal edges are fed parallel to each other to a uniting station with one edge of one unfinished belt transversely confronting one edge of the other unfinished belt. The two unfinished belts are laterally separated at the station so that their one edges are spaced from and parallel to each other and a separator belt is inserted into a space defined between the one edges. Then the two unfinished belts and the separator belt are fed together into a press, and are there hot pressed.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: June 14, 1994
    Assignee: G. Siempelkamp GmbH & Co.
    Inventor: Winfried Moitzfeld
  • Patent number: 5312570
    Abstract: A system and method for preparing an abraded fiber optic ribbon are provided. This system uses a flat abrasion panel containing a design, such as a company logo, and contacting it directly with a fiber optic ribbon, pressing devices to feed and press the panel and the fiber optic ribbon against each other as the design is being processed onto the fiber optic ribbon, and adjustable speed and differential pressure devices are used to drive the pressing devices. In addition, at least one of the pressing devices may be heated to enhance the processing of the pattern onto the fiber optic ribbon. Particularly, the pressing includes a first roller and a second roller defining a nip through which the panel and the fiber optic ribbon are being fed and pressed against each other. Alternatively, the pressing includes a first plate and a second plate defining a pressing zone in which the panel and the fiber optic ribbon are being fed and pressed against each other.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: May 17, 1994
    Assignee: Poly-Optical Products, Inc.
    Inventor: Roger F. Halter