Concentrically Mounted Patents (Class 83/621)
  • Patent number: 8763503
    Abstract: Personal cutting devices in the form of hand held punches for producing jewelry display cards include two aligned templates having identical patterns of apertures and being securely mounted in a frame such that a space between the templates accommodates a piece of cardstock. There is a spring biased movable member having elongate cutting elements designed to pass through the apertures in both templates, and an activation lever on which indicia is printed to show the aperture patterns produced by the punches. A housing protects the mechanism. Each punch is specifically designed to produce a display card that can hold and display a single article of jewelry such as a pair of earrings, a necklace or a brooch. The punches vary in size according to the template patterns. The punches enable the jewelry designer to use any card stock, including a business card, to display an article of jewelry.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 1, 2014
    Inventor: Aleathia G. Hunter
  • Patent number: 8635936
    Abstract: A punching device includes: a base including a die part that has a top wall; an abutting member connected to the base; a punch supported on the base, movable relative to the die part and the abutting member between upper and lower positions; and an ejecting unit supported on the base and including a non-compressible ejecting element disposed above and adjacent to the top wall of the die part. The punch is movable relative to the ejecting unit at least during movement of the punch from a middle position to the lower position. The ejecting unit abuts against the abutting member at least when the punch is disposed at the upper position.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: January 28, 2014
    Inventor: Chung-Yi Lee
  • Patent number: 8459159
    Abstract: The invention relates to an assembly comprising, on the one hand, a tubular compressed mineral wool felt element and, on the other hand, at least one means of maintaining the compression state of the said felt. The maintaining means may be a film surrounding the felt element on its cylinder-shaped surface. The assembly may be used as an insulating pipe section for pipework. The invention also relates to a method of producing annular elements, by way of punching, where the starting material is a web of bonded fibrous material, such as tempered mineral wool. A punching tool in the form of at least one punch knife which is mounted on a press plate is pressed through the web then pulled out again.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: June 11, 2013
    Assignee: Saint-Gobain Isover
    Inventors: Erling Jessen, Fleming Lund Jensen
  • Patent number: 7971513
    Abstract: A paper punch die (125) is disclosed as including a top part (110, 202, 302) and a platform (100, 206, 306) engaged with each other, the platform (100, 206, 306) having an upper major surface (106) and a lower major surface (126, 207, 307), the upper major surface of the platform (100, 206, 306) being in abutment with a lower major surface (118) of the top part (110, 202, 302), and an endless wall (130) with an undulating cutting edge (132) extending away from the lower major surface (126, 207, 307) of the platform (100, 206, 306). There is also disclosed a paper punch (140) including such a paper punch die (125).
    Type: Grant
    Filed: February 1, 2007
    Date of Patent: July 5, 2011
    Assignee: Lee Tack Plastic & Metal Manufactory, Ltd.
    Inventor: Kwok Ki Stephen Chan
  • Publication number: 20100058912
    Abstract: A paper punch includes a base with two support units and each support unit has lower first holes and higher second holes. A main arm has two extensions and each extension has two lugs. Each lug includes an elongate slot defined therethrough. The main arm is pivotably connected to the higher second holes. Two assistance arms are located between the main arm and the two support units, the two assistance arms are pivotably connected to the lower first holes. Each assistance arm includes two legs and each leg has a protrusion which is movably engaged with the elongate slot corresponding thereto. Two punch head are movably connected to the two support units and can be pushed to punch paper sheets by the assistance arms. The protrusions of the assistance arms move along the elongate slots in the main arm and the punch heads are lowered by the assistance arms.
    Type: Application
    Filed: September 10, 2008
    Publication date: March 11, 2010
    Inventor: Chien-Chuan Huang
  • Patent number: 7487703
    Abstract: A tool is disclosed, for use with a punching press for punching holes in workpieces. A punch body is provided, elongated in an axial direction. A first punch head is formed on an end of the punch body, and has a first radial diameter, perpendicular to the axial direction. A second punch head has a second radial diameter, also perpendicular to the axial direction. The second punch head is substantially spaced from the first punch head. A neck is formed between the first and second punch heads, having a uniformly tapered diameter less than the first and second radial diameters.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: February 10, 2009
    Assignee: M.O.M. Tools, LLC
    Inventors: Anthony Lockhart, John C. Collier, Jr., Sonny Sneed
  • Patent number: 7270527
    Abstract: There is provided an optical recording medium-manufacturing apparatus that is capable of avoiding breakage of a substrate while avoiding formation of a central hole off-center with respect to the substrate. A control section causes the vertical movement section to move an ultrasonic horn in directions toward and away from the cutting edge of a punching blade section to thereby cause the ultrasonic horn to press the disk-shaped substrate and at the same cause an ultrasonic generator to perform ultrasonic vibration at least from a time point at which the disk-shaped substrate is brought into contact with the cutting edge of the punching blade section to a time point at which the punching of the central hole is completed.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: September 18, 2007
    Assignee: TDK Corporation
    Inventors: Junichi Ide, Haruhiko Yamaguchi, Futoshi Kobayashi, Takeshi Umega, Tsuyoshi Itoh, Yoshimi Yodogawa, Mamoru Usami
  • Patent number: 7047859
    Abstract: An optical recording medium-manufacturing apparatus which is capable of reducing wear of a cut-forming blade section used for forming a cut in a resin layer, without increasing the component costs of the apparatus. An ultrasonic horn includes a hollow-cylindrical cut-forming blade section for being pushed into a resin layer formed on one side of a disk-shaped substrate, thereby forming a circular cut in the resin layer. A control section controls motion of the ultrasonic horn caused by a moving mechanism. The control section causes the ultrasonic horn to be pushed in to the resin layer while causing ultrasonic vibration thereof to thereby form the cut, and while maintaining a state of ultrasonic vibration of the abutment section and a pushed-in state of the cut-forming blade section, causes the punching blade section to be pushed into the disk-shaped substrate, to form the central hole.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: May 23, 2006
    Assignee: TDK Corporation
    Inventors: Junichi Ide, Takeshi Umega, Haruhiko Yamaguchi, Futoshi Kobayashi, Tsuyoshi Itoh, Yoshimi Yodogawa, Mamoru Usami
  • Publication number: 20030029292
    Abstract: A holder and a support member for mounting a blade to a perforator are provided. The holder is composed of a blade, a two-position switching member, and a mounting member. The holder is assembled detachably to the support member along the external shape of the mounting member by operating the two-position switching member. The two-position switching member has an elastic compression member between it and the mounting member to impart elasticity to the operation, and has also an engaging section to fit into a groove in the support member, thereby ensuring the engaged state of the holder. The support member 150 includes a groove for mounting the blade and a clearance groove for punch cuttings above the groove.
    Type: Application
    Filed: August 1, 2002
    Publication date: February 13, 2003
    Applicant: Carl Manufacturing Co., Ltd.
    Inventors: Makoto Mori, Hiroshi Tadenuma, Tokihiro Sakuma
  • Patent number: 6401510
    Abstract: A method of stamping a part from an elongated strip of multi-layered material. The multi-layered material includes a viscoelastic intermediate layer, and upper and lower layers that are relatively rigid with respect to the intermediate layer. The method includes providing symmetrically aligned top and bottom punches each including a material displacement edge corresponding with a desired shape of the part. Each of the material displacement edges are defined by a rake surface and a part interface surface that combine to form a positive rake angle. The strip is positioned between the top and bottom punches. The top and bottom punches then shear a portion of the upper and lower layers, respectively. More particularly, symmetrical groove patterns are formed in the upper and lower layers, defining a perimeter of the part. The part is then removed from the strip along the perimeter.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: June 11, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas L. Morse, Alfred D. Nelson, Brian D. Johnson
  • Publication number: 20010039865
    Abstract: A stamping die produces gears or other parts having quality tooth forms or the like from smooth edged metal blanks. A lower portion of the die includes a trim punch, whose perimeter shape corresponds to the shape of the desired part, and a vertically moveable stripper plate surrounding the trim punch and having a recess for aligning the blank. An upper portion of the stamping die is vertically moveable with respect to the lower portion, and includes a trim die. The trim die has a bore disposed therein complementary to the trim punch. A nest plate is affixed to the underside of the trim die, and has a tapered nest opening that aligns with the die bore. A controllably biased shedder passes through the bore and opening. During operation, a blank is first placed in the recess. A press ram subsequently descends, with the blank becoming sandwiched between the shedder and the trim punch, with a portion of the blank to be trimmed being left unsupported.
    Type: Application
    Filed: June 9, 1999
    Publication date: November 15, 2001
    Inventor: EDWARD D. BENNETT
  • Patent number: 6142046
    Abstract: A knife projection sensing system for cutting machines having a rotatable surface adapted to retain a plurality of cutting knives. The system employs a plurality of sensors mountable to the cutting machine to be stationary with respect to the rotatable surface. The sensors generate a signal capable of indicating the position of each cutting knife as the knives rotate past the sensors. A microprocessor in communication with the sensors analyzes the signal generated to determine the projection of each knife from a reference surface and to determine if the projection of at least one of the plurality of cutting knives deviates outside preset desirable limits. The projection status of the knives is communicated to an operator by a light display or paper printout. The system can be used to ensure that knives are correctly installed in the cutting machine and to monitor knife position during normal operation. The system can also be used to determine when knives need changing for sharpening.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: November 7, 2000
    Assignee: CAE Machinery Ltd.
    Inventors: Cameron Dean Mierau, James Gary Irwin
  • Patent number: 6089137
    Abstract: A paper punch has an inner punch and an outer punch movably received with respect to each other. The outer punch has a first contour punch so as to be able to punch a hole in a piece of paper with the same contour as that of the first contour punch, and the inner punch has a second contour punch so as to punch a small hole in a piece of paper with the same contour as that of the second contour punch. Because the second contour punch moves first and the first and the second contour punches are placed concentrically, a piece of paper is then able to be punched twice by the first and the second contour punches to have an attractive shape.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: July 18, 2000
    Inventor: Cheng-Ho Lee
  • Patent number: 6070521
    Abstract: Learning control is adopted in slide control of a press, and the actual behavior pattern of the slide is converged to the optimum pattern thereby breakage of a metal mold or the like can be prevented. The slide control device is provided with a linear motor or a servo motor driving the slide in reciprocation, a position detector detecting position of the slide, and a control circuit fixing and storing previously the command value of the optimum pattern of behavior of the slide, and calculating error between the real position data from the position detector and the fixed command value of the optimum pattern in a prescribed period of time from the drive start of the slide, and correcting the command value to be outputted in order to eliminate the error and outputting the command value after the correction and controlling the linear motor or the servo motor.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: June 6, 2000
    Assignee: Yamada Dobby Co., Ltd.
    Inventor: Yoshihiro Otoshi
  • Patent number: 6041682
    Abstract: An improved knife fixture is provided of the type having a plurality of knife blades for cutting food products, such as cutting potatoes into elongated French fry strips, wherein the knife fixture includes a detector system and method for promptly indicating breakage of a knife blade. The knife fixture generally comprises a fixture frame adapted to support the plurality of knife blades under tension during normal cutting operation, in accordance with the knife fixture disclosed in U.S. Pat. No. 5,343,623. The detector system and method comprises, in one preferred form, mounting the knife blades for passage of an electrical current and monitoring the current level for abrupt changes indicative of a broken blade. In another preferred form, a strain gauge is provided on the fixture frame to measure the tension force applied to the knife blades, and to permit monitoring of abrupt changes in tension indicative of a broken blade.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: March 28, 2000
    Assignee: J.R. Simplot Company
    Inventors: Richard B. Jensen, Patrick J. Linder
  • Patent number: 6009783
    Abstract: The invention relates to a sheet metal work center and a method for fabricating sheet metal therefrom. In the sheet metal work center, a locking arrangement is placed between the upper tool and a releaser, and the transfer device is arranged to consist of two parts. The sheet metal work center is adaptable to work in either a passive or active mode. In the passive mode, the releaser is positioned at a certain distance from the surface of the sheet, and the movements of the upper tool and the releaser are made with the locking arrangement locked and either part of the transfer device used. In the active mode, the releaser is positioned to be in contact with the sheet, and the movements of the upper tool and releaser are made with the locking arrangement locked and either part of the transfer device used.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: January 4, 2000
    Assignee: Lillbacka Jetair Oy
    Inventors: Jorma Taijonlahti, Mikael Ollikainen
  • Patent number: 5904083
    Abstract: An improved knife fixture is provided of the type having a plurality of knife blades for cutting food products, such as cutting potatoes into elongated French fry strips, wherein the knife fixture includes a detector system and method for promptly indicating breakage of a knife blade. The knife fixture generally comprises a fixture frame adapted to support the plurality of knife blades under tension during normal cutting operation, in accordance with the knife fixture disclosed in U.S. Pat. No. 5,343,623. The detector system and method comprises, in one preferred form, mounting the knife blades for passage of an electrical current and monitoring the current level for abrupt changes indicative of a broken blade. In another preferred form, a strain gauge is provided on the fixture frame to measure the tension force applied to the knife blades, and to permit monitoring of abrupt changes in tension indicative of a broken blade.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: May 18, 1999
    Assignee: J.R. Simplot Company
    Inventors: Richard B. Jensen, Patrick J. Linder
  • Patent number: 5905440
    Abstract: The invention has utility generally for monitoring any part for severance of the part. The invention is specifically useful for monitoring severance of a tension blade in a tension blade grid. For general monitoring of a part, the apparatus has wireless connection between the sensing unit and the control unit. The wireless connection is achieved with a transmit/receive unit using radiofrequency power transfer for electrical power and using infrared transmitters and receivers for signal transfer. For food processing, specifically for a vegetable cutting method employing at least one tension blade in a first tension blade grid through which vegetables are passed for cutting the vegetables wherein the at least one tension blade is severed during the cutting, the invention provides for diverting the vegetables to a second tension blade grid.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: May 18, 1999
    Assignees: Battelle Memorial Institute, Lamb-Weston, Inc.
    Inventors: John Julian, James R. Skorpik, Joe C. Harris
  • Patent number: 5765458
    Abstract: A method of detecting whether the ram of a punch press machine follows the upper die assembly of the machine after the pressing of a work piece involving the monitoring of current flow through an electrical circuit. The electrical circuit consists of an electrical conductor, located on the side of the ram, held in the electrically conductive state. The electrical conductor and an earthing path function as a watching switch for watching the position of the ram controlled by a controlling device to determine whether the upper die assembly follows the ram or not by electrically detecting whether the ram comes in contact with the upper die assembly. A first allowable detection time and a second allowable detection time are preliminarily set in order to electrically detect that the ram comes in contact with the upper die assembly within particular thresholds.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: June 16, 1998
    Assignee: Nisshinso Industries, Inc.
    Inventors: Hiroshi Nakagawa, Michiharu Ichikawa, Yoshitami Matsui
  • Patent number: 5584216
    Abstract: A die punch includes a shank configured to operably engage a tool holder on a die, and a tip extending from the shank, the tip being configured to punch a hole in sheet material. A conductor extends from the shank to the tip along a longitudinally extending passageway in the punch. The conductor is insulated from the shank but electrically connected to said tip at one end by a bridge so that an electrical circuit is defined from the conductor through the bridge and tip to the shank. A first electrical contact is connected to the trailing end of the conductor and insulated from the shank, and a second contact is secured to the shank, either on the side or the end of the shank. The punch holder includes a pair of corresponding contacts so that the punch is electrically connected to the press control circuitry when the punch is secured in the punch holder. The continuity of the electrical circuit is continuously monitored to determine if the tip of the punch has been broken.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: December 17, 1996
    Inventor: Arthur H. Sinjen
  • Patent number: 5573442
    Abstract: An apparatus for measuring the width of a cutting blade in a linear motor is activated when the cutting blade is raised. A working pin is advanced and one end of a detecting pin is abutted against an edge of the cutting blade. Thereafter, the working pin is returned. The blade width is derived by deducting the number of inputted driving pulses in returning from the advanced position of the detecting pin. The cutting blade is polished each polishing cycle for predetermined times by polishing rollers. The width of the cutting blade is measured by blade width detecting means during each predetermined polishing cycle. The measurement value of the blade width is fed back into a control device so that the subsequent polishing time of the cutting blade with the polishing rollers is adjusted until it becomes appropriate. The expiration of the useful life of the polishing rollers is determined when a long polishing time is required.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: November 12, 1996
    Assignee: Shima Seiki Manufacturing Limited
    Inventors: Toshiaki Morita, Toshiro Ochi
  • Patent number: 5540126
    Abstract: An automatic lay-up machine is disclosed for composite material article having anisotropic resistance in tension. A layer of fiber material, either unidirectional or fabric weave, is dispensed between a supply roll and a take-up roll. This material is advanced over a cutting table having at least one and preferably a plurality of cutting molds, each mold cutting a profile of a portion of an article being fabricated and leaving a continuous scrap webbing for gathering at the take-up roll. The material is placed under tension across the cutting table, compressed, and cut at the molds to extract the individual layers having the desired sections utilized in fabricating the article. This process is repeated with the molds indexing in rotation with respect to the material so that successive layers filling the molds align their respective fibers in varying directions.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: July 30, 1996
    Assignee: Piramoon Technologies
    Inventor: Alireza Piramoon
  • Patent number: 5235880
    Abstract: A detectable cutter knife (100) is useful as a replacement for a conventional cutter knife used in product inspection and cutting systems of the type having a cutting wheel assembly. The cutting wheel assembly includes a knife guide having angularly spaced radially oriented knife support slots through which cutter knives having tangs extending therefrom move between a retracted noncutting position and an extended cutting position. The detectable cutter knife (100) includes a shank (102), a tang (114), and an amount of metallic material in the shank sufficient to stimulate a metal detector. The use of metallic material in the shank permits automatic and efficient detection of a broken cutter knife (100) and its removal from product flow. Preferably, the metallic material takes the form of a ball bearing (152) secured within a hole (150) positioned in a low-stress area (154) of shank (102).
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: August 17, 1993
    Assignee: Simco/Ramic Corp.
    Inventors: John H. Wilbur, Gale M. Wood
  • Patent number: 5140800
    Abstract: A method and apparatus is provided for severing packaging material which extends between successive wrapped loads during a continuous packaging process. A conveyor assembly conveys the wrapped loads along a load path in a conveying direction. The conveyor assembly includes a first conveyor portion having a discharge area and a second conveyor portion having a receiving area downstream and a step down from the discharge area of the first conveyor portion. A severing assembly includes a severing element located above the second conveyor portion for severing the packaging material between loads. A pivoting breakaway mechanism permits the severing element to pivot in the conveying direction. An escapement mechanism, responsive to load sensors, transports the severing element to a position spaced from the load path when the severing element encounters a load.
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: August 25, 1992
    Assignee: Lantech, Inc.
    Inventors: Stuart Martin, Curtis Martin, Bill Bird, John Fain, Phil Moore
  • Patent number: 5125302
    Abstract: A machine is described for perforating webs of material, such as toilet paper. The machine includes a cylinder (17) mounted on the frame of the machine and around which cylinder the web is carried as the web passes through the machine. The cylinder has a plurality of blades, one edge of each extending beyond the surface of the cylinder and parallel to the axis of the cylinder. A support (21) for a cooperating blade (33) is pivotally mounted on the machine in a manner which permits the cooperating blade (33) to move toward and away from the blades in the cylinder (17). The cooperating blade (33) extends at an angle to the axis of the cylinder and consists of a plurality of segments, each of which is supported in a block (25) which fits into seats in the support. The seats extend in a line parallel to the cylinder axis.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: June 30, 1992
    Assignee: Fabio Perini S.p.A.
    Inventor: Guglielmo Biagiotti
  • Patent number: 5111724
    Abstract: A device for slitting a metallic foil which is continuously fed along a path comprising a support base having an elongated guide formed therein, the guide defining a generally linear guide path, and the support base being positionable adjacent the foil path and a blade holder dimensioned to be received within the guide and be movable along the guide path, the blade holder dimensioned to hold a cutting blade having a linear cutting surface wherein the linear cutting surface is oriented generally parallel to the guide path; and a reversible drive member secured to the base operable to reciprocally move the blade holder along the guide path at a controllable rate of speed.
    Type: Grant
    Filed: May 21, 1991
    Date of Patent: May 12, 1992
    Assignee: Gould Inc.
    Inventors: Bob C. Kanaga, Ronald R. Beyerle
  • Patent number: 5070751
    Abstract: An apparatus (50) for detecting lateral deviation of a band saw blade (36) from the desired line of cut which includes an angularly displaceable element (54) slidably engaging the saw blade (36) for pivotal movement therewith. A relatively rigid mounting assembly (52,64) mounts the angularly displaceable element (54) for rotation while resisting lateral displacement. Lateral blade deviation is proportionately determined when angular displacement is sensed by a sensor (55) as the blade (36) contacts the displaceable element (54) rotating it about an axis (53) through the desired plane of the blade (36). The angular deflection sensing assembly 50 also may be incorporated into a guide arm (32).
    Type: Grant
    Filed: January 11, 1991
    Date of Patent: December 10, 1991
    Inventor: Gerald R. Harris
  • Patent number: 5069098
    Abstract: Limit switch for the positioning of cutting machines in a machine for the cutting of plastic and/or paper materials in strips of predetermined width, this cutting unit being slidable on supporting beams, which device includes a source (31) of a ray of light (50) parallel to the supporting beam (24) of the cutting units (12); a tappet (33) of this ray of light; a rotating L-shaped plate (36) hinged in (40) to one side of the base of each cutting unit (12) and maintained in parallel position to said ray of light (50) by a spring (42); an actuating plate (38) fixed in adjustable position to the other side of each cutting unit, in opposite position and aligned with said rotating L-shaped plate (36); and an electronic station driven by the interception of said ray of light (50).
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: December 3, 1991
    Assignee: Elio Cavagna S.r.l.
    Inventor: Elio Cavagna
  • Patent number: 5031360
    Abstract: A dicing saw for semiconductors includes a defect detector which is used for stopping operation of the dicing saw when such operation would be adverse to the integrity of the work product (semiconductor dice). Infrared light from a light transducer is transmitted from a light transmitter to a detector at an opposite side of the saw's blade from the transmitter. Infrared light from a light transducer is also reflected from the dicing saw blade edge back to the transducer, permitting detection of reflected light along with the detection of light across the blade.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: July 16, 1991
    Assignee: Micron Technology, Inc.
    Inventors: Warren M. Farnworth, Ed A. Schrock
  • Patent number: 4994979
    Abstract: A system for preventing the collision of two cutting tools in a computer-controlled cutting unit in which the two cutting tools may at times be moved toward each other. This system determines the actual position of each cutting tool during the cutting process. The distance between the two cutting tools is determined and is compared with a previously specified tolerated separation by means of a comparator in the computer. As soon as the tolerated separation has been reached, the system shuts off the cutting unit. In addition, an electrical safety circuit prevents the cutting unit from starting up again automatically after an automatic shutdown.
    Type: Grant
    Filed: March 22, 1989
    Date of Patent: February 19, 1991
    Assignee: Durkopp System Technik GmbH
    Inventors: Wolfgang Bruder, Klaus Biervert, Gerd Kupper
  • Patent number: 4926733
    Abstract: A saw-blade tensioning arrangement for band saw and like machines which includes a hydraulic cylinder (6) having arranged for movement therein a piston (7) which is intended to activated saw-blade tension control means (2). The blade tension is, in this way, dependent on the hydraulic pressure in the cylinder. The arrangement includes means for pneumatically regulating the hydraulic pressure, these means including a pneumatically operated pressure booster (10) and means (19, 20, 35) for activating the pressure booster at the end of a working stroke of the hydraulic piston, therewith to tension the saw blade to the desired working tension, this working tension being determined, inter alia, by the blade width.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: May 22, 1990
    Assignee: Aktiebolaget A.K. Eriksson
    Inventor: Kurt Janson
  • Patent number: 4908931
    Abstract: An apparatus for cutting the leads of an electronic part inserted into a printed board and simultaneously detecting the insertion of said leads and/or the characteristics of said electronic part, said apparatus comprising:a first blade means having an electrically conductive surface;a second cutting blade means positioned in a cooperating relation to the first cutting blade means so as to cut the lead, said blade means having a substrate made of an electrically non-conductive material, a blade edge provided at one end of the substrate, and at least one wear-resisting electrode coating secured to the substrate in the vicinity of the blade edge so that the electrode coating is electrically in communication with the first cutting blade means through the lead only at the time of the cutting of the lead, said coating being made of a metal having wear resistance or an electrically conductive ceramic; andmeans for electrically connecting said electrode coating to said first blade member and for detecting the inserti
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: March 20, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Tomiteru Itoh, Shinsui Moroi, Munenobu Suzuki, Zenshiro Oyama, Yuji Sekimura, Mitho Haginoya
  • Patent number: 4878407
    Abstract: A method and apparatus for mounting a die, particularly a rigid cutting die, on a die cylinder includes having a bubble along a seal on the die to bridge any gaps between the die and the die cylinder when the die is initially positioned on the die cylinder. This bubble seal enables a vacuum to be applied between the initially positioned die and the die cylinder to pull the die down against and into conformity with the surface of the die cylinder, at the same time flattening the bubble seal. A key at a trailing edge of the die locates in an axial keyway in the die cylinder to circumferentially position the die; a bolt is then inserted at a leading edge of the die to establish axial location. During operation the die is held in position by the vacuum. Beam sensors and light reflectors may be incorporated to sense when a wrong die is present and shut down the apparatus.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: November 7, 1989
    Assignee: The Ward Machinery Company
    Inventors: John R. Harrison, Gary L. Lehr, Dennis J. Parr, William F. Ward, Jr., Robert R. Wells
  • Patent number: 4793033
    Abstract: A method and apparatus is disclosed for cutting a sculptured pattern in carpet pile. The apparatus has a carpet clipping head carried by a carriage means that can move the clipping head horizontally, vertically and rotationally. Instructions from memory associated with a computer cause the carriage to move the carpet clipper along a predetermined route to cut the sculptured pattern in the carpet. The apparatus also senses the temperature of the clipping head and shuts off the apparatus if overheating occurs. A vacuum mechanism is provided to remove carpet cuttings during operation. The apparatus also dispenses lubricating fluid to the clipper head.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: December 27, 1988
    Inventors: Bruce H. Schneider, Jerry S. Schneider
  • Patent number: 4771665
    Abstract: A blade quality monitor for use with cutter reels having specifically identifiable blades utilize a sensor to detect the position of a physical anomaly on the reel. Additional sensors sense the force at the interface between the cutter reel, the material wrapped thereon and the associated pressure roller. The position of the physical anomaly is correlated with the sensed force to determine the magnitude thereof at each blade which is indicative of the condition of the blade with respect to sharpness or intactness.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: September 20, 1988
    Assignee: Lummus Industries, Inc.
    Inventors: Donald W. Van Doorn, William D. Beeland
  • Patent number: 4753010
    Abstract: The apparatus of the present invention addresses the unique problem of punching centrally located holes in stoma-wafers, and comprises a base portion fixed to a surface such as a table or the like, the base portion having a raised annular projection for placement of a stoma-wafer thereupon with the projection fittingly engaging into the hole of the stoma-wafer. The base portion further includes an upper arm member fixed to the base portion and extending to a point directly above the location of the raised projection. The fixed member has a vertically movable plunger element with an annular blade threadably attached to the lower end of it, the annular blade being of a size larger than the raised projection, so that movement of the blade downward would cut a hole in the wafer to the appropriate size of the blade as the stoma-wafer is centrally located on the projection.
    Type: Grant
    Filed: March 17, 1986
    Date of Patent: June 28, 1988
    Inventor: Anthony Franovich
  • Patent number: 4717328
    Abstract: An apparatus for forming an alignment of longitudinally spaced short slits with undulated edges in a sheet of fresh pasta comprises a pair of meshing but noncontacting identical gear-like elements mounted on rotatively driven parallel shafts. Each gear-like element is a pair of identical bevel-toothed disks abutted together so that the tips of the bevel teeth of one disk are opposite the grooves between the teeth of the other disk, the width of the bevel teeth being appreciably less than the width of the grooves. The novel pasta product of the apparatus features an alignment of longitudinally spaced short slits with undulated edges.
    Type: Grant
    Filed: April 7, 1986
    Date of Patent: January 5, 1988
    Inventor: Joseph C. D'Alterio
  • Patent number: 4716803
    Abstract: A self-equalizing device for performing mechanical operations such as piercing and punching wherein the piston means forming the work ram is internally mounted within the proximal portion of a yoke body, the yoke body being in turn mounted for sliding or rolling displacement on a stationary base. A knock out slot for a pin type punch is provided in the external portion of the piston ram. Single and multiple action devices are disclosed.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: January 5, 1988
    Assignee: REO Hydraulic Pierce & Form, Inc.
    Inventor: Edward J. Waltonen
  • Patent number: 4674374
    Abstract: A band saw machine is provided with a fixed and movable blade guide arm which are set apart by a distance which is proportional to the width of workpiece to be cut. A detector mounted on one of the guide arms senses the lateral deviation of the saw blade during cutting and a control circuit outputs a termination signal to shut down the machine when the deviation is larger than a desired maximum value. When a workpiece of a different width is to be cut the guide arms are reset apart by a distance proportional to the width of the new workpiece and a detector is provided which senses the change of distance between the guide arms and outputs a signal to a revising circuit. The revising circuit then revises the maximum value of deviation to be allowed based on the change of distance between the guide arms.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: June 23, 1987
    Assignee: Amada Company, Limited
    Inventors: Toru Sadahiro, Masayuki Taguchi, Toru Tokiwa, Takeshi Terajima
  • Patent number: 4664571
    Abstract: A tool abnormality detector for use with a machine tool for detecting any abnormality of a tool mounted on the tool mounting shaft. When the tool mounting shaft is in a correct position with respect to the tubular body secured to the spindle, the air pressure is kept constant. When an abnormal resistance is applied to the tool mounting shaft, the latter will lag in rotation with respect to the tubular body, so that the exhaust air passage will be blocked. A pressure sensor detects an abnormal increase in the air supply line, giving a signal for stopping the spindle of the machine tool. This prevents the tool from damage.
    Type: Grant
    Filed: May 22, 1986
    Date of Patent: May 12, 1987
    Assignee: Nippon Pneumatic Manufacturing Co., Ltd.
    Inventors: Reiji Takada, Tsutomu Aoki
  • Patent number: 4663815
    Abstract: An electrical component for mechanical mouting and electrical connection with respect to plated through holes of a printed circuit board compatibly with a surface mount attaching process includes an electrically non-conducting body, plural generally elongate contacts extending from the body for insertion into such plated through holes, and the component having a reservoir for retaining solder type material for melting, for flow into respective plated through holes, and for re-solidifying to mechanically and electrically couple the component to such printed circuit board. Preferably the component is a connector, such as a header, and the contact pins or leads thereof provide an interface connection between the printed circuit board and a separate or portable connector.
    Type: Grant
    Filed: October 1, 1985
    Date of Patent: May 12, 1987
    Assignee: Associated Enterprises, Inc.
    Inventors: John E. Hartman, John T. Venaleck
  • Patent number: 4651601
    Abstract: A device for preventing a collision between a work holder (20) and a tool in numerical control equipment for a turret punch press. A region occupied by the work holder (20) in a mechanical coordinate system, is stored in a work holder region storing memory (4), and the sizes of a plurality of tool posts of a turret (24), or the sizes of tools received in the tool posts, are stored in a tool post shape storing memory (4). At the time of tool selection, a punching inhibit computing circuit (1) computes a punching inhibit region for a selected one of the tools on the basis of the stored contents of the work holder region storing memory (4) and the tool post shape storing memory (4). Immediately before the execution of a punch command, a collision preventing circuit (1) checks whether the position of the selected tool is within the punching inhibit region or not, and if so, it stops the operation of the machine.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: March 24, 1987
    Assignee: Fanuc Ltd
    Inventor: Takao Sasaki
  • Patent number: 4628780
    Abstract: An air ejector system for use in a horizontal or vertical stamping press which reciprocates the moving member of a die set to produce an annular product. Air is introduced through a central punch for shedding and ejecting a slug. Air is also introduced through an annular knockout for shedding and ejecting a coaxially produced product. A resilient member retains the knockout in a position rearwardly of the punch and button die during the forward punching stroke. Valving sequentially introduces the air through the punch and knockout at the appropriate points in the reciprocating stamping cycle.
    Type: Grant
    Filed: May 13, 1985
    Date of Patent: December 16, 1986
    Assignee: Rochez Bros., Inc.
    Inventor: Charles D. Hicks
  • Patent number: 4598745
    Abstract: Wooden logs are chipped by alternating forward feed of the log towards a cutting device, to obtain cutting and retracting the log from the cutting device, either as instigated manually or when the cutter speed drops below a predetermined value.
    Type: Grant
    Filed: February 10, 1984
    Date of Patent: July 8, 1986
    Assignee: Perusyhtymae Oy
    Inventor: Jaakko Parviainen
  • Patent number: 4590780
    Abstract: Starting from a pre-heated bar, there is sheared-off first a portion (41) which, in a first forming stage of the machine, is formed into a tier shaped pressed article. In the second forming stage, the pressed article is further formed so that it has an inner ring (J), an outer ring (A) arranged co-axially to this and a radial annular web (S) connecting the two rings (J,A). The sheared-off outer ring (44) is therefore ejected in the next to last stage, while in the last working stage the inner ring (45) separated from the outer ring is subjected to further working. This last working stage involves stamping out a waste piece (35) and shearing-off an annular web (38). It is also possible to carry out a forming operation in this last working stage to upset the remaining inner ring (22a).
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: May 27, 1986
    Assignee: Hatebur Umformmaschinen AG
    Inventor: Ernst Bachmann
  • Patent number: 4570336
    Abstract: A device for mounting an integrated circuit with two rows of terminal pins to a circuit board comprises a pair of stationary knives and a pair of movable knives, each stationary knife overlying the respective movable knife on opposite sides of a stationary anvil member. Each stationary knife is provided in the region of its cutting edge with a multiplicity of spaced parallel slots extending transversely to the cutting edge, whereby the stationary knife is formed in the region of the cutting edge with a multiplicity of cutting tabs. Each cutting tab is connected to a respective strain gauge strip in turn electrically connected to a processing or monitoring circuit by means of a multiplicity of leads. The monitoring circuit detects the electrical resistances of the strain gauge strips and thereby determines whether the corresponding cutting tab has been loaded or engaged by a terminal pin during a bending and severing operation. The monitoring circuit includes a microprocessor and a display.
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: February 18, 1986
    Assignee: Siemens Aktiengesellschaft
    Inventors: Martin Richter, Josef Schweiger
  • Patent number: 4557168
    Abstract: A method for detecting the cutting resistance of a workpiece to a bandsaw blade comprises the steps of: magnifying movement of the bandsaw blade by a magnifying device in a direction normal to a running direction of the bandsaw blade; detecting the movement of the bandsaw blade by a sensor in the direction normal to the running direction of the bandsaw blade; and adjusting a force exerted by a feed speed of the bandsaw blade during a cutting operation in immediate response to momentary changes in the cutting resistance of the workpiece to the bandsaw blade. An apparatus for carrying out the method is also disclosed.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: December 10, 1985
    Assignee: Amada Company, Limited
    Inventor: Toru Tokiwa
  • Patent number: 4466317
    Abstract: A method of and apparatus for controlling the movement of a workpiece to be processed in a punch press is disclosed in which after the workpiece is processed by contact of a ram on the upper tool of the press and the ram is momentarily out of contact with the upper tool, the recontact of the ram and upper tool is detected and then the processed workpiece is moved out of the processing position. In addition, the apparatus detects when the ram has returned to the proximity of the top dead center of the eccentric shaft which drives the ram and when the processing of the workpiece has been completed. The apparatus is also provided with a monitoring system which detects a malfunction in the control apparatus.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: August 21, 1984
    Assignee: Amada Company Limited
    Inventor: Nobuyuki Ikeda
  • Patent number: 4463637
    Abstract: A forging (A) is received in a split ring (B) which provides peripheral support to a forging peripheral wall (14) and an upper peripheral flange (16). The forging and the split ring are supported by a nest member assembly (C) as a trimming assembly (D) moves longitudinally to trim the forging flange and a forging bore (10). A punch (74) with a hardened cutting edge (80) moves axially through the forging bore and interacts with a nesting assembly cutting edge (60) to trim the bore. Concurrently, a trim die (90) having a cutting edge (96) interacts with a split die cutting edge (36) trimming the upper flange. The split ring restrains a central portion of the forging from puffing peripherally outward in response to the punch being urged therethrough. The interaction of the trim die and the split ring inhibits the upper part of the forging adjacent the upper flange from being drawn in toward the forging bore by the interaction between the punch and forging.
    Type: Grant
    Filed: October 7, 1982
    Date of Patent: August 7, 1984
    Inventors: Ralph D. Delio, Donald J. Diemer
  • Patent number: RE33798
    Abstract: A self-equalizing device for performing mechanical operations such as piercing and punching wherein the piston means forming the work ram is internally mounted within the proximal portion of a yoke body, the yoke body being in turn mounted for sliding or rolling displacement on a stationary base. A knock out slot for a pin type punch is provided in the external portion of the piston ram. Single and multiple action devices are disclosed.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: January 21, 1992
    Assignee: REO Hydraulic Pierce & Form Inc.
    Inventor: Edward J. Waltonen