Patents by Inventor David Pedersen

David Pedersen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20050217962
    Abstract: A clutch assembly is provided including a first member and a second member rotatable relative to the first member. A clutch pack is provided for frictionally engaging the first and second members. A piston chamber is provided adjacent to the clutch pack, and a piston is disposed in the piston chamber and operable for applying axial pressure to the clutch pack. The piston includes first, second, and third seal portions integrally molded in place on the piston and engaging the piston chamber at spaced locations. The integrally molded first, second, and third seal portions reduce the number of components necessary for properly sealing the piston chamber and reduce the amount of labor required for assembly.
    Type: Application
    Filed: March 30, 2004
    Publication date: October 6, 2005
    Inventors: David Pedersen, Todd Gaulin, Paul Hagenow
  • Publication number: 20050156165
    Abstract: One embodiment of the present invention concerns a test assembly for testing product circuitry of a product die. In one embodiment, the test assembly includes at test die and an interconnection substrate for electrically coupling the test die to a host controller that communicates with the test die. The test die may be designed according to a design methodology that includes the step of concurrently designing test circuitry and a product circuitry in a unified design. The test circuitry can be designed to provide a high degree of fault coverage for the corresponding product circuitry generally without regard to the amount of silicon area that will be required by the test circuitry. The design methodology then partitions the unified design into the test die and the product die. The test die includes the test circuitry and the product die includes the product circuitry. The product and test die may then be fabricated on separate semiconductor wafers.
    Type: Application
    Filed: November 30, 2004
    Publication date: July 21, 2005
    Inventors: Benjamin Eldridge, Igor Khandros, David Pedersen, Ralph Whitten
  • Publication number: 20050017750
    Abstract: Techniques for performing wafer-level burn-in and test of semiconductor devices include a test substrate having active electronic components such as ASICs mounted to an interconnection substrate or incorporated therein, metallic spring contact elements effecting interconnections between the ASICs and a plurality of devices-under-test (DUTs) on a wafer-under-test (WUT), all disposed in a vacuum vessel so that the ASICs can be operated at temperatures independent from and significantly lower than the burn-in temperature of the DUTs. The spring contact elements may be mounted to either the DUTs or to the ASICs, and may fan out to relax tolerance constraints on aligning and interconnecting the ASICs and the DUTs. Physical alignment techniques are also described.
    Type: Application
    Filed: August 23, 2004
    Publication date: January 27, 2005
    Inventors: Igor Khandros, David Pedersen
  • Patent number: 6766348
    Abstract: A method and system for allocating distributed resources connected to a computer network to application programs running on computers attached to the communications network. The distributed resource allocator system comprises a number of identical processes running on one or more computers attached to the communications network. Application programs request allocation of resources from a local distributed resource allocator system process running using a resource allocator applications programming interface. Application programs request allocation of resource from a remote distributed resource allocator system process via a resource allocator access protocol. The distributed resource allocator system is fault-tolerant and provides contention control and load balancing. The resource allocator system also manages information about the capacities and capabilities of resources connected to the communications network.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: July 20, 2004
    Assignee: WorldCom, Inc.
    Inventors: Charles Combs, Jeffrey Gold, Brian Mair, David Pedersen, David Schear
  • Patent number: 6752198
    Abstract: Bimetallic plate is produced by providing a substrate of a first metal and, with the preheated substrate positioned in a mold cavity with a major surface of the substrate facing upwardly and to fill a portion of the depth of the cavity, a second metal is cast against that surface to form a cladding component and, with the substrate, to form the bimetallic plate. Prior to the cladding being cast, the major surface is rendered substantially oxide-free and is protected against oxidation. The cladding is cast by a melt, of a composition required for it, being poured at a superheated temperature whereby, with the preheating of the substrate, an overall heat energy balance is achieved between the substrate and the cladding.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: June 22, 2004
    Assignee: Commonwealth Scientific and Industrial Research Organisation of Campbell
    Inventors: Teunis Heijkoop, Ian Robert Dick, Bernard Bednarz, Geoffrey Martin Goss, Philip David Pedersen, Robert Sidney Brunton, William Trickett Wright
  • Patent number: 6665701
    Abstract: A method and system for resolving contending requests for resources connected from a computer network by application programs running on computers attached to the communications network. The distributed resource allocator system comprises a number of identical processes running on one or more computers attached to the communications network. Application programs request allocation of resources from a local distributed resource allocator system process running using a resource allocator applications programming interface. Application programs request allocation of resource from a remote distributed resource allocator system process via a resource allocator access protocol. Contending resource requests are first resolved by the priority of the resource request. If contention cannot be resolved by priority alone, then contentions are next resolved by examining the resource request's time of arrival in light of its priority.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: December 16, 2003
    Assignee: WorldCom, Inc.
    Inventors: Charles Combs, Jeffrey Gold, Brian Mair, David Pedersen, David Schear
  • Publication number: 20030141034
    Abstract: Bimetallic plate is produced by providing a substrate of a first metal and, with the preheated substrate positioned in a mold cavity with a major surface of the substrate facing upwardly and to fill a portion of the depth of the cavity, a second metal is cast against that surface to form a cladding component and, with the substrate, to form the bimetallic plate. Prior to the cladding being cast, the major surface is rendered substantially oxide-free and is protected against oxidation. The cladding is cast by a melt, of a composition required for it, being poured at a superheated temperature whereby, with the preheating of the substrate, an overall heat energy balance is achieved between the substrate and the cladding.
    Type: Application
    Filed: December 3, 2002
    Publication date: July 31, 2003
    Inventors: Teunis Heijkoop, Ian Robert Dick, Bernard Bednarz, Geoffrey Martin Goss, Philip David Pedersen, Robert Sidney Brunton, William Trickett Wright
  • Patent number: 6523065
    Abstract: A method and system for allocating distributed resources connected to a computer network to application programs running on computers attached to the communications network. The distributed resource allocator system comprises a number of identical processes running on one or more computers attached to the communications network. Application programs request allocation of resources from a local distributed resource allocator system process running using a resource allocator applications programming interface. Application programs request allocation of resource from a remote distributed resource allocator system process via a resource allocator access protocol. The distributed resource allocator system provides a means for the entry of new resources and new resource class and characteristics information in a shared directory. The resource allocator system also manages information about the capacities and capabilities of resources connected to the communications network.
    Type: Grant
    Filed: August 3, 1999
    Date of Patent: February 18, 2003
    Assignee: WorldCom, Inc.
    Inventors: Charles Combs, Jeffrey Gold, Brian Mair, David Pedersen, David Schear
  • Patent number: 6197904
    Abstract: Copolymers of tetrafluoroethylene and ethylene having modifiers comprising perfluoro(alkyl vinyl ether) have low melting points. The copolymers also have low flex modulus.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: March 6, 2001
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Subash V. Gangal, Dewey L. Kerbow, Robert G. Brown, Patrick E. Lindner, Scot David Pedersen
  • Patent number: 4697335
    Abstract: There is provided a soluble chemical layer affixed to a rigid backing, whereupon an electronic configuration is printed and covered with a lacquer. The pattern and lacquer coating are then separated from the backing by dissolving the soluble chemical. Once free, the pattern is transferred to and fused to the substrate.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: October 6, 1987
    Assignee: Hy-Meg Corporation
    Inventors: David Pedersen, Vincent N. Cupidro