Solidification Of Work Contacting Medium Patents (Class 269/7)
  • Patent number: 9199349
    Abstract: An apparatus and method for using an apparatus to machine honeycomb cores are disclosed. A honeycomb core is inserted into a channel in an apparatus with removable dams. The core is flooded with a fluid which is frozen. The frozen block is machined while supported by the apparatus. The block is then melted and the machined honeycomb is removed.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: December 1, 2015
    Assignee: Rohr, Inc.
    Inventor: Ronald Carl
  • Patent number: 8784021
    Abstract: A jig device holding a work piece is used with a milling machine that cuts from the work piece a prosthesis having a surface essentially free of defects. The jig device is inserted repeatedly into the machine in the same predetermined location, even upon inverting the jig device. This maintains the spatial relationship between the jig device and milling so, at start up, they are always in the same exact spatial relationship. The milling machine partially cuts through a first side of the work piece to form in the work piece a cavity having a surface part corresponding to at least a portion of the prosthesis being made. The jig device is then removed from the machine, inverted and reinserted into the machine at the same predetermined location. A support material is placed in the cavity prior to reinserting the jig device. Upon reinserting the jig device, the machine precisely cuts through an opposed side of the work piece to form within the work piece a prosthesis having a surface essentially free of defects.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: July 22, 2014
    Assignee: O'Brien Dental Lab, Inc.
    Inventors: Derrick Luksch, Christophorus Luksch
  • Publication number: 20140161553
    Abstract: An apparatus and method for using an apparatus to machine honeycomb cores are disclosed. A honeycomb core is inserted into a channel in an apparatus with removable dams. The core is flooded with a fluid which is frozen. The frozen block is machined while supported by the apparatus. The block is then melted and the machined honeycomb is removed.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 12, 2014
    Applicant: ROHR, INC.
    Inventor: Ronald Carl
  • Publication number: 20140110894
    Abstract: A wafer carrier includes a base having a cavity provided at the center of the base and an outer sidewall extending along and away from an edge of the base to define the cavity. The cavity is configured to be filled with an adhesive layer. The wafer carrier is configured to be bonded to a wafer with an adhesive layer in the cavity of base such that the outer sidewall faces and is in contact with an edge of the wafer and the cavity faces a center of the wafer.
    Type: Application
    Filed: August 12, 2013
    Publication date: April 24, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ho-Jin Lee, Pil-kyu Kang, Taeyeong Kim, Byung Lyul Park, Kyu-Ha Lee, Gilheyun Choi
  • Publication number: 20140035448
    Abstract: A method and apparatus for producing a magnetic attachment mechanism is described. A method is provided for determining the magnetic field axis of an element prior to machining it. The magnetic field axis can be used as a reference to machine an outer surface of the magnetic element at a desired angle. The method provides a means to more precisely align magnetic field axes of corresponding magnets in a magnetic attachment system.
    Type: Application
    Filed: October 4, 2013
    Publication date: February 6, 2014
    Applicant: Apple Inc.
    Inventor: Cesare A. TOLENTINO
  • Publication number: 20130087959
    Abstract: The present invention is a laminated body including a substrate, a joining layer positioned adjacent the substrate, a photothermal conversion layer positioned adjacent the joining layer, and a light transmitting support positioned adjacent the photothermal conversion layer. The photothermal conversion layer includes a metal absorbing layer.
    Type: Application
    Filed: May 27, 2011
    Publication date: April 11, 2013
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Hung T. Tran, Kazuta Saito
  • Publication number: 20120224140
    Abstract: A method of deblocking an ophthalmic lens component (100) blocked on a thermoplastic layer (310) arranged on the holding surface (210) of a lens holding block (200) comprising the step of applying a pushing force on the thermoplastic layer (310), wherein the pushing force is greater or equal to 100 N and smaller or equal to 1000 N and wherein the pushing force is applied in a region of the thermoplastic layer (310) situated at a distance of at least 17.5 mm from the fitting point or prism reference point of the ophthalmic lens component (100).
    Type: Application
    Filed: October 19, 2010
    Publication date: September 6, 2012
    Applicant: ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
    Inventors: Yohann Felten, Matthieu Le Gall
  • Publication number: 20100223935
    Abstract: Apparatus and methods for freezing a tissue sample in preparation of sectioning. Generally, the apparatus comprises a chuck and a tissue heat sink that are adapted to rapidly freeze a tissue sample before being sectioned in a cryostat. While the chuck and heat sink may be made of any suitable material, in some cases, the chuck and heat sink include copper, a copper alloy, bronze, or a bronze alloy. To keep the chuck and heat sink from tarnishing, they can be covered with a non-tarnishing coating material, such as tetrafluoroethylene. Additionally, in order to secure the tissue sample that is embedded in a cutting medium to the chuck, the chuck preferably includes one or more dovetail-shaped apertures, such as a dovetail-shaped groove.
    Type: Application
    Filed: March 4, 2010
    Publication date: September 9, 2010
    Inventor: Thomas M. Donndelinger
  • Publication number: 20100109220
    Abstract: Object To provide a substrate assembly apparatus capable of simplifying a structure of the apparatus and performing appropriate detachment of a substrate constantly. Solving Means A substrate assembly apparatus according to the present invention includes a support base and a holding mechanism. The support base is for supporting a lower substrate. The holding mechanism includes a holding surface and a functional element. The holding surface is for holding an upper surface of an upper substrate. The functional element is provided on the holding surface and has a holding force variable in accordance with a magnitude of a voltage. The holding mechanism causes a lower surface of the upper substrate to face an upper surface of the lower substrate supported by the support base. With this structure, it becomes possible to electrically control the holding force with respect to the substrate and simplify the structure of the holding mechanism.
    Type: Application
    Filed: April 15, 2008
    Publication date: May 6, 2010
    Applicant: ULVAC, INC.
    Inventors: Kazuhiro Musha, Hirofumi Minami, Takafumi Kawaguchi
  • Patent number: 7510461
    Abstract: A method for grinding a number of objects includes a series of steps from arranging the objects to be ground on a grinding jig (a master plate) through removing the ground objects from the grinding jig after completion of the grinding process, smoothly and precisely without damaging a number of the objects to be ground and without altering the arrangement pattern of the objects to be ground from the start through the end of the series of steps.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: March 31, 2009
    Assignee: NGK Insulators, Ltd.
    Inventors: Kazumasa Kitamura, Katsuyuki Tsuneoka, Tomoki Nagae
  • Patent number: 7296421
    Abstract: There is provided a protecting method capable of simply and firmly protecting a required face of an article such that the required face of the article is not damaged or contaminated and capable of extremely simply carrying out a protecting step and a protection releasing step.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: November 20, 2007
    Assignee: Eminent Supply Corporation
    Inventor: Yoshitaka Tarumizu
  • Patent number: 7144299
    Abstract: Electronic device support and processing methods are described. One embodiment includes a method of processing an electronic device including solder bumps extending therefrom. The method includes providing at least one fluid selected from the group consisting of electrorheological fluids and magnorheological fluids on a support structure. The solder bumps extending from the electronic device are positioned in the fluid. The fluid is activated by applying a field selected from the group consisting of an electric field and a magnetic field to the fluid. The activated fluid mechanically holds the electronic device in place. A surface of the electronic device is polished while the electronic device is held in place by the activated fluid. The fluid is deactivated by removing the applied field from the fluid, and the electronic device is separated from the deactivated fluid. Other embodiments are described and claimed.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: December 5, 2006
    Assignee: Intel Corporation
    Inventors: Leonel R. Arana, Terry L. Sterrett, Devendra Natekar
  • Patent number: 6921068
    Abstract: A vise structure for maintaining in position parts which are to be machined, including but not limited to parts which are to undergo micro-milling operations in a fast prototyping process, includes a fixing bed having a cavity for receiving a thermofusible material which is capable of being reversibly brought from a liquid state to a solid state. A free surface of the fixing bed is continuously urged into contact with the surface of a part which is to be machined, and the fixing bed includes apparatus for heating and cooling the thermofusible material to enable a part arranged on the fixing bed to be selectively released and retained in position on the fixing bed.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: July 26, 2005
    Assignee: Centre d'Ingéniérie de Recherche et de Transfert de l'Esstin à Saint Die (C.I.R.T.E.S.)
    Inventors: Claude Barlier, Alain Wadsworth
  • Patent number: 6902360
    Abstract: A hole of a hole size is cut in a composite material workpiece by selecting a milling cutter having an effective cutter size less than the hole size, mounting the composite material workpiece in operable relation to the milling cutter, rotating the milling cutter about an axis of rotation, and advancing the milling cutter longitudinally into the composite material workpiece parallel to the axis of rotation at a rate of longitudinal advance, while laterally moving the milling cutter perpendicular to the axis of rotation to interpolate the hole. The rate of longitudinal advance is controlled such that the hole remains substantially a flat-bottomed hole as it is cut. The composite material workpiece is desirably affixed to a backing fixture with an adhesive material during the cutting of the hole.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: June 7, 2005
    Assignee: General Electric Company
    Inventors: Roy Dean Meece, Jeffrey Kevin Back, Roger John Tuchfarber, Gerald Roger Geverdt, Michael Jay Brunck
  • Patent number: 6647611
    Abstract: A fixturing or workpiece holding and clamping apparatus or device, as well as method, utilizing the viscosity increase or solidification of a magnetorheological liquid or rigidity increase of a malleable semi-solid or clayish magnetorheological material to secure both regular and irregular shaped workpieces for precision machining or measuring operations. The workpiece is placed in a desired position and orientation in an open cell containing a magnetorheological liquid or medium which conforms to a portion of the surface of the workpiece. A magnet then applies a magnetic field to the magnetorheological liquid or material to increase the viscosity or rigidity thereof, applying a uniform clamping pressure to secure the workpiece in the desired position and orientation for machining or measuring operations.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: November 18, 2003
    Inventor: Xuesong Zhang
  • Publication number: 20030173726
    Abstract: The invention concerns a vise structure for maintaining parts to be machined, in particular but not exclusively for a micro-milling operation in a fast prototyping process. The invention is characterised in that it consists of a fixing plate (1) provided with reserves suitably distributed wherein is arranged a thermofusible material capable of being reversibly brought from liquid state to solid state whereof the free surface is urged continuously from the surface of said plate, the latter comprising means for heating/cooling (3, 4) said thermofusible material enabling to release/retain the part arranged on said plate.
    Type: Application
    Filed: May 19, 2003
    Publication date: September 18, 2003
    Inventors: Claude Barlier, Alain Wadsworth
  • Patent number: 6568059
    Abstract: A tool and a method for replacing brake system components for automotive vehicles. The tool is designed to rotatably secure a worn or defective treadle valve side by side with a rotatably secured replacement treadle valve. The treadle valves can be rotated and locked into place to present corresponding faces to the user. The tool and method allows the user to measure the orientation or alignment of threaded fittings on the worn or defective treadle valve, remove them and then install them or their replacement fittings on the replacement treadle valve in the same general orientation or alignment as the fittings had on the worn or defective treadle valve. The tool and method ensures that when the replacement treadle valve is reinstalled on the vehicle, the threaded couplings on the ends of lengths of tubing will align with the fittings installed on the replacement treadle valve.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: May 27, 2003
    Inventor: Rickie Lane Bush
  • Publication number: 20010050454
    Abstract: A fixturing or workpiece holding and clamping apparatus or device, as well as method, utilizing the viscosity increase or solidification of a magnetorheological liquid or rigidity increase of a malleable semi-solid or clayish magnetorheological material to secure both regular and irregular shaped workpieces for precision machining or measuring operations. The workpiece is placed in a desired position and orientation in an open cell containing a magnetorheological liquid or medium which conforms to a portion of the surface of the workpiece. A magnet then applies a magnetic field to the magnetorheological liquid or material to increase the viscosity or rigidity thereof, applying a uniform clamping pressure to secure the workpiece in the desired position and orientation for machining or measuring operations.
    Type: Application
    Filed: July 10, 2001
    Publication date: December 13, 2001
    Inventor: Xuesong Zhang
  • Patent number: 6267364
    Abstract: A fixturing or workpiece holding and clamping apparatus or device, as well as method, utilizing the viscosity increase or solidification of a magnetorheological fluid work contacting medium to secure both regular and irregular shaped workpieces for precision machining or measuring operations. The apparatus or device comprises a perforated fixture into which the workpiece is placed in a desired position and orientation. The perforated fixture and positioned workpiece are placed in an open cell containing a magnetorheological fluid which conforms to a portion of the surface of the workpiece. A magnet then applies a magnetic field to the magnetorheological fluid to increase the viscosity thereof and to solidify the fluid around the workpiece with a uniform clamping pressure, securing the workpiece in the desired position and orientation for machining or measuring operations.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: July 31, 2001
    Inventor: Xuesong Zhang
  • Patent number: 6199623
    Abstract: A tissue chuck for use with a chuck holder for preparing a tissue sample for sectioning in a cryostat or the like, includes a base, having a tissue mounting surface and a heat transfer surface, and a plurality of fins for transferring heat from the heat transfer surface. Each fin terminates in a fin end, and each fin end is in spaced relation to the base.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: March 13, 2001
    Inventor: James W. Franks
  • Patent number: 6182954
    Abstract: A work piece holding apparatus uses a magnetorheological fluid for holding a work piece firmly for machining process and/or measurements. The apparatus includes a cell with a hollow space in it and magnetorheological fluid is put into the hollow space. A special fixture with a hollow space in it is used to hold a work piece by screws in the wall or walls. The fixture with a work piece in it is fastened inside the cell dipped in magnetorheological fluid to absorb the extra force beyond the holding power supplied by magnetorheological fluid alone. It then overcomes any climbing that may happen during any process. A magnetic field is supplied to the cell to make the magnetorheological fluid work. It is well known that if a magnetic field is applied to a magnetorheological fluid, the viscosity of the fluid will be increased tremendously and behaves almost like a solid.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: February 6, 2001
    Inventor: Xuesong Zhang
  • Patent number: 6151713
    Abstract: A hand protector includes a cup open at a bottom end and of the size to admit a hand, a handle within the compass of said cup, the handle being of a size to be grasped by the hand, the handle being hollow for at least part of its length, with an open mouth opening through an otherwise closed top end of the cup, and a plug of pliable material in the mouth. The pliable material is of a consistency and axial length such as to receive and removably to hold the stem of a pyrotechnic device, such as a sparkler or punk stick, or even a long match.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: November 28, 2000
    Inventor: Becky R. Dunn
  • Patent number: 6093249
    Abstract: A support fixture to support a PC card, having components on side 1. A backing plate supports a casting, the casting having a nest. The surface of the nest is characterized in that it is a slightly larger mirror image of the side 1 of the PC card. The backing plate has apertures and the casting is received in the apertures to lock the casting to the backing plate. Vacuum holes are formed in the backing plate, to draw a vacuum to hold the PC card in a planar position.
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: July 25, 2000
    Assignee: Transition Automation, Inc.
    Inventor: Mark Curtin
  • Patent number: 6073451
    Abstract: The invention relates to an improved method for chucking and machining a workpiece using a freezing type chuck device. A macromolecular freezing agent whose freezing point is higher than that of water is interposed at least between a workpiece and a fixing surface, and the workpiece is fixed using this macromolecular freezing agent as an adhesive medium by cooling the fixing surface. The macromolecular freezing agent may be a liquid, a cream or a paste, and is typically silicone oil based. The workpiece may be directly fixed to the fixing surface of a freezing type chuck device by the macromolecular freezing agent or alternatively the workpiece may be fixed to a pallet by the macromolecular freezing agent and the pallet may be fixed to the fixing surface.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: June 13, 2000
    Inventor: Yoshitaka Tarumizu
  • Patent number: 5983991
    Abstract: A tissue chuck for use with a chuck holder for preparing a tissue sample for sectioning in a cryostat or the like, includes a base, having a tissue mounting surface and a heat transfer surface, and a plurality of fins for transferring heat from the heat transfer surface. Each fin terminates in a fin end, and each fin end is in spaced relation to the base.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: November 16, 1999
    Inventor: James W. Franks
  • Patent number: 5947662
    Abstract: Each of a plurality of thin-walled workpieces is held for machining in a machine in a respective rigid holder. Ends of unmachined workpieces are each first imbedded in a molten body of a metal alloy having a melting point between 45.degree. C. and 140.degree. C. contained in a respective one of the rigid holders in a cooling station and having a negative expansion coefficient. The holder and the alloy body are cooled in the cooling station to solidify the body around the imbedded end of the unmachined workpiece and the cooled holder is displaced with the unmachined workpiece from the cooling station into the machine. After machining of the workpiece in the holder, the holder is displaced from the machine into a heating station where it is heated to melt the alloy body. Then the machined workpiece is lifted out of the molten body in the heating station and the holder with the molten alloy body is recirculated from the heating station to the cooling station.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: September 7, 1999
    Assignee: Ernst Thielenhaus KG
    Inventors: Manfred G. Becker, Peter C. Dinardi, Kenneth J. Sprenger, Timothy S. Guitar
  • Patent number: 5921714
    Abstract: A device for releasing of a frozen screw pressed against a contact surface uses a compression disc pre-loaded to an anticipated amount of deflection prior to mounting between the contact surface and the screw. The disc has an insert formed from a granulated material mixed with a water soluble binder, allowing to wash out the insert and cause collapse of the disc, so as to break the connection between the contact surface and the screw.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: July 13, 1999
    Inventor: Jerome L. Goldman
  • Patent number: 5826866
    Abstract: Each of a plurality of thin-walled workpieces is held for machining in a machine in a respective rigid holder. Ends of unmachined workpieces are each first imbedded in a molten body of a metal alloy having a melting point between 45.degree. C. and 140.degree. C. contained in a respective one of the rigid holders in a cooling station and having a negative expansion coefficient. The holder and the alloy body are cooled in the cooling station to solidify the body around the imbedded end of the unmachined workpiece and the cooled holder is displaced with the unmachined workpiece from the cooling station into the machine. After machining of the workpiece in the holder, the holder is displaced from the machine into a heating station where it is heated to melt the alloy body. Then the machined workpiece is lifted out of the molten body in the heating station and the holder with the molten alloy body is recirculated from the heating station to the cooling station.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: October 27, 1998
    Assignee: Ernst Thielenhaus KG
    Inventors: Manfred G. Becker, Peter C. Dinardi, Kenneth J. Sprenger, Timothy S. Guitar
  • Patent number: 5822841
    Abstract: A fixture for use in the final machining operation of the integral bladed rotor (IBR) of a gas turbine engine comprises a rigid ring for surrounding the outer periphery of the IBR and supporting tapered pins that fit into the space between the blades and then molded therein with a plaster or plastic medium for securing the unit to the IBR for enhancing its structural integrity. The method of finishing the airfoils of the IBR includes inserting the pins in alternate spaces and working half of the blade surfaces in the pinless spaces and then removing the pins and inserting pins in the previously worked spaces and then molding the pins in place. The other half of the bladed surface is then worked in the pinless spaces until the airfoils are finally contoured. The unit is removed and heated to melt the residual cast medium to produce the finished product.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: October 20, 1998
    Assignee: United Technologies Corporation
    Inventors: Daniel A. Bales, Leroy F. Turner, Sr.
  • Patent number: 5799644
    Abstract: A semiconductor single crystal ingot cutting jig is shaped as a cylinder having a diameter approximately equal to an ingot diameter. A recess is provided at one end of the jig for receiving a head (or tail) of the ingot. An adhesive is provided in the recess so as to adhere the ingot to the jig when the head (or tail) of the ingot is inserted into the recess. Then, the ingot is fixed on a bed of a band-saw slicing machine. The head (or tail) of the ingot is fixed on the jig and thus will not overturn at the time just before finishing the cutting or at the end of cutting. This can prevent a blade of a band saw slicing machine from being damaged.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: September 1, 1998
    Assignee: Komatsu Electronic Metals Co., Ltd.
    Inventor: Kouji Nishida
  • Patent number: 5762736
    Abstract: There is disclosed a method for parting an electroformed article from a mandrel including: (a) solidifying a liquid that is disposed between a parting device and the article, thereby joining the parting device to the article via the solidified liquid; and (b) moving the parting device in a direction of separation of the article from the mandrel while the parting device is joined to the article via the solidified liquid to assist in separation of the article from the mandrel.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: June 9, 1998
    Assignee: Xerox Corporation
    Inventors: William G. Herbert, Loren E. Hendrix, Gary J. Maier, Ernest F. Matyi
  • Patent number: 5722320
    Abstract: The invention includes a self-aligning die platen assembly for use with a cooperating die platen assembly to form a die set. The self-aligning die platen assembly comprises a die shoe and a platen having a working face for operational cooperation with a corresponding working face of the cooperating die platen assembly. The platen is mounted in the die shoe and has a freely rockable condition therein which permits the platen to be moved into an aligned operational position in which its working face conforms to the corresponding working face of the cooperating die platen when the assemblies are closed. The die platen assembly also includes a locking element for securely maintaining the self-aligning platen in the operational position. A preferred locking device includes a low temperature melting alloy.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: March 3, 1998
    Assignee: Kemet Corporation
    Inventor: David Thomas Meyer
  • Patent number: 5715589
    Abstract: The jewelry fixture 10, 38, 60 includes a rigid support and a low temperature polymeric material. The configuration of the rigid support may be altered for supporting a pendant, earrings, a bracelet, a necklace or a ring thereon. The low temperature polymeric material is preferably a cyclic ester polymer heated to a temperature of less than about 160.degree. F. by contacting the polymeric material with heated water. The heated polymeric material is positioned on the support, and the jewelry is pressed partially into the heated polymeric material. The polymeric material is then allowed to harden at room temperature. The present invention substantially reduces damage while working on jewelry, and provides a reliable fixture for supporting the jewelry during manufacture, modification or repair.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: February 10, 1998
    Inventor: Tyler Teague
  • Patent number: 5535506
    Abstract: An apparatus and method for permanently attaching to fabric in a right-side up orientation decorative objects such as rhinestones or nailheads using conventional setting hardware such as tiffany settings and/or rim settings and nail heads. The apparatus employs an upper die having a bore filled with a viscous material that extends into a lower groove of the upper die and a pressure closure to permit maintaining the amount of viscous material in the groove.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: July 16, 1996
    Assignee: Geisler Ganz Corporation
    Inventor: Bernard Chalfin
  • Patent number: 5404566
    Abstract: A process for generating an entertainment audio signal interrupted by advertising audio signals in which pilot signals associated with the advertising audio signals cause switching between the entertainment audio signals and the advertising audio signals makes it possible to broadcast different radio programs of the desired acoustic quality in a shop by means of a carrier frequency. To this end, a high-frequency control signal is generated from advertising audio signals and pilot signals which precede or follow the advertising audio signals. The control signal and preferably the entertainment audio signal are modulated to a high-frequency carrier signal, possibly with several channels, for the separate recovery of the signals. The modulated carrier signal is transmitted, the transmitted carrier signal is demodulated and, if necessary, the signals are separated from each other. The pilot signals of the transmitted control signals are monitored for the presence of fading or flashback conditions.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: April 4, 1995
    Inventor: Buckhard Wehrmeyer
  • Patent number: 5357762
    Abstract: A method for fixing pieces by freezing which consists in fixing the pieces o be machined on an auxiliary support having good thermal conductivity, for example made of aluminium, by freezing onto an freeze vice on the copper plate of which there has previously been deposited a film of antifreeze liquid. The auxiliary support is fixed to the freeze vice by vacuum, by magnetism, or by any mechanical clamping. This method makes it possible to eliminate the operation and the time for thawing which, up until now, was required for removing the pieces to be machined from the freeze vice. The auxiliary support may be used as a transfer pallet on which the pieces are held by freezing.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: October 25, 1994
    Assignee: Societe Anonyme De La Manufacture D'Horlogerie Audemars, Piquet & Cie
    Inventor: Henri Charton
  • Patent number: 5210926
    Abstract: Disclosed are a method for fixturing and manufacturing a machined workpiece, an article of manufacture including, in combination, a workholder and a workpiece, and a core box used to form the workholder. The workholder preferably is made of a cured resin bonded sand mixture. The workpiece is placed within the core box. Then the uncured resin bonded sand mixture is packed about the workpiece in the core box and allowed to cure to form a frangible workholder for securing the workpiece. The core box may then be disassembled to release the workholder. The workholder next is positioned and affixed relative to a machining apparatus and machined. Mechanical forces, such as impact blows and/or abrading particles, such as sand or shot, are applied to the frangible workholder to disintegrate the workholder from about the machined workpiece.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: May 18, 1993
    Assignee: Ford Motor Company
    Inventor: Orrin A. Newton
  • Patent number: 5138918
    Abstract: A method and apparatus for securing a drum blank for machining includes inserting a cylindrical mandrel within a bore of a drum blank, introducing a liquid support material into a space between the outer diameter of the mandrel and the inner diameter of the drum blank, and solidifying the support material. Once the support material is solidified, the drum blank is securely held to the mandrel. Machining operations can be performed by mounting the assembly in a lathe. After machining is completed, the support material may be treated so that the mandrel can be removed from the drum blank. The mandrel may then be recycled.
    Type: Grant
    Filed: May 31, 1990
    Date of Patent: August 18, 1992
    Assignee: Xerox Corporation
    Inventors: Anthony A. Attardi, Alexander A. Antonelli, Stuart B. Berger, Frederick A. Warner, William G. Herbert, Paul J. Kaveny, Joseph Mammino, Ernst F. Matyi
  • Patent number: 5054193
    Abstract: A fixture for supporting a double-sided surface mount printed circuit board during installation of components on a second side of the board. After components have been installed on one side of the board, a slab of controllably shapable material such as thermally compliant foam is shaped by pressing it against the board under heat and pressure to conform to the shape of the board and its components. When the material cools, it is used to support the board during the installation of components on the other side. In an alternate embodiment, a viscous substance is used as the shapable material and is conformed to the shape of the board while the substance is being hardened. A board on which components are being installed may be held in place on the fixture by a vacuum which is supplied from a manifold through holes in the fixture to the board.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: October 8, 1991
    Assignee: Hewlett-Packard Company
    Inventors: Kurt Ohms, Juan Jimenez
  • Patent number: 5013014
    Abstract: A fixture for workpieces which are poorly adapted for direct clamping on a machine tool comprises a casing having an upper part and a lower part. The casing has a cavity whose shape roughly corresponds to the contour of the workpiece. The remaining interstitial space or crack between the inner casing wall and the workpiece is filled with a hardenable casting material so that the workpiece is securely held when the casting material sets around it. For clamping of the securing body onto a grinding machine, lathe, or other machine tool, the casing comprises a clampable portion with reference surfaces.
    Type: Grant
    Filed: October 3, 1986
    Date of Patent: May 7, 1991
    Assignee: Korber AG
    Inventor: Heinrich Mushardt
  • Patent number: 5005633
    Abstract: A blocking mechanism comprises a similified rotary dial mechanism and a l clamp which automatically depressurizes a molten alloy tank in response to a release of the lens clamp pressure. A lens seat is provided with a raised resilient pad to accommodate the recessed portion of a bifocal lens. The application of final lens clamping pressure cannot occur until the lens clamp contacts the lens in order to assure that an operator's finger cannot become accidentally pinched.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: April 9, 1991
    Assignee: Coburn Optical Industries, a Division of Pilkington Visioncare, Inc.
    Inventors: Herbert H. Mathews, Joseph L. Welch
  • Patent number: 4930679
    Abstract: There are disclosed jigs that are used in the present invention. These jigs are directed to hold and retain left, right and intra-proximal attachment forms prior to and during the soldering of the attachment to a crown. Each jig has a precisely formed head portion sized and shaped to receive and retain a mating engaging portion of the attachment so that the attachment is soldered in a predetermined position to the crown. The jig is made of a high temperature material and has a tail portion that is integral with and extends from the shaped head so that both the jig and the crown may be retained in an investment material during the soldering of the attachment to the crown. The attachments are used for bridges or partial restorations. Preferably the jig is provided with a scored surface to provide an improved gipping surface while imbedded in the investment material during soldering.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: June 5, 1990
    Inventors: Robert Q. Manley, Jerome J. Goodman
  • Patent number: 4844143
    Abstract: The cylindrical side wall of the mold cavity (8) has an inside diameter (D) which is greater than the largest existing ophthalmic lens diameter, and a generally cylindrical membrane (25) of elastomer material is disposed concentrically inside the mold cavity so that in conjunction with the cylindrical side wall of the cavity it defines a variable volume annular chamber (31), the membrane being expansible and retractable radially under the action of a fluid which is alternatively removed from and admitted to the annular chamber.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: July 4, 1989
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Patrick Herbin, Jean-Claude Lacrois
  • Patent number: 4822013
    Abstract: An apparatus for securing a component, comprising a casing 12 having two portions 12a, 12b between which a portion of the component 38 is positioned. The casing 12 is provided with end walls 34,36 which extend towards the component but terminate just short thereof by a predetermined amount. The position of the component 38 is fixed relative to features 28 provided on the casing 12 prior to injecting a location material into the interior of said casing 12. The material preferably has a high resistance to extrusion and acts to locate the component 38 during machining.
    Type: Grant
    Filed: December 2, 1987
    Date of Patent: April 18, 1989
    Assignee: Rolls-Royce plc
    Inventor: Thomas K. Johnson
  • Patent number: 4808046
    Abstract: A method of cutting out components from aluminum sheets utilizes a routing tool. The sheet is held firmly in position by vacuum on a vacuum table during the cutting operation with the aid of a film of for example plastics material adhered to the back of the sheet, the routing tool being arranged to cut through the sheet but only partially to penetrate the film.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: February 28, 1989
    Assignee: Design Technologies Limited
    Inventors: Donald J. Pilkington, Christopher I. Marlow
  • Patent number: 4730382
    Abstract: An integrated factory system affords precision machining and inspection of aircraft turbine blades, as well as other metal parts having two generally opposite principal surfaces. It uses only two stages of chucking by the meltable matrix method. After embedding one of the surfaces in the first chuck, which positions the blank relative to a plane of reference, the other surface is machined and inspected according to programs relative to that plane. Without release from the first chuck, the part is transferred to a second chuck for embedding the machined principal surface relative to a second parallel plane of reference a precise distance from that of the first chuck. Machining and inspection is now completed relative to this second plane of reference.Improved matrix chucks are provided, as well as new chucking apparatus which establishes the planes of reference.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: March 15, 1988
    Inventor: John T. Parsons
  • Patent number: 4729804
    Abstract: A workholder (6) has a contoured bonding surface (7), which essentially matches a contoured surface (4) of an airfoil (1). A plurality of studs (8) are disposed within a plurality of tapped holes (9) located about the workholder bonding surface. In operation, the studs are extended outwardly from the surface, and both the studs and bonding surface are contacted with a release agent (10). A curable resinous material (11) is applied to the bonding surface and studs, and an airfoil positioned next to the bonding surface, sandwiching the resinous material therebetween. After curing, a plurality of tapped holes (13) are formed in resin layer (11), with the extended studs fixably positioning the airfoil relative to the workholder. Removing the studs provides heatless release of the airfoil from the workholder.
    Type: Grant
    Filed: December 24, 1986
    Date of Patent: March 8, 1988
    Assignee: United Technologies Corporation
    Inventor: James R. Dillner
  • Patent number: 4685660
    Abstract: A workholder (6) has a contoured bonding surface (7), which essentially matches a contoured surface (4) of an airfoil (1). A plurality of studs (8) are disposed within a plurality of tapped holes (9) located about the workholder bonding surface. In operation, the studs are extended outwardly from the surface, and both the studs and bonding surface are contacted with a release agent (10). A curable resinous material (11) is applied to the bonding surface and studs, and an airfoil positioned next to the bonding surface, sandwiching the resinous material therebetween. After curing, a plurality of tapped holes (13) are formed in resin layer (11), with the extended studs fixedly positioning the airfoil relative to the workholder. Removing the studs provides heatless release of the airfoil from the workholder.
    Type: Grant
    Filed: February 13, 1986
    Date of Patent: August 11, 1987
    Assignee: United Technologies Corporation
    Inventor: James R. Dillner
  • Patent number: 4657720
    Abstract: A method and apparatus are disclosed for quickly and exactly locating a desired structure in a specimen or the like located on a plate or slide, and then preparing an accurate, embedded specimen block for later use, and particularly for preparing thin sections, e.g., 0.1 microns or less, on a microtome machine, for microscopic examination.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: April 14, 1987
    Inventor: Tohru Inouye
  • Patent number: 4642212
    Abstract: A robotic base compartment has an interior locating surface. A plurality of pins extend squarely from the locating surface. The pins are located by pre-assembly machining and the extending pin surfaces are coated with a release agent. A robotic component plate, such as a gear-carrying plate, is assembled in the base compartment, with clearance slots surrounding the locating pins. After adjustably positioning the gear elements with one another by shifting the component plate, the slots are filled, for at least a portion, with a pourable hardenable material such as epoxy which is then allowed to harden. The components may thereafter be disassembled and reassembled without the loss of precision location. The assembly method obviates the need for manual drilling and reaming of pin holes at assembly and the attendant chip contamination that results therefrom.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: February 10, 1987
    Assignee: Cincinnati Milacron Inc.
    Inventor: Edward J. Bailey