Patents by Inventor Douglas C. Schenk

Douglas C. Schenk 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).

  • Patent number: 8623145
    Abstract: A seal for sealing an interface between a container and a lid of a process chamber. The seal comprises a first seal element and a second seal element that are arranged to seal the interface in series, with the second seal element being situated to encounter processing activity upstream of the fist seal element. The first seal element has a deflectable portion and a protrusion extending radially from the deflectable portion. The second seal element has a radially extending recess in which the protrusion of the first seal element is received. The protrusion and recess interlock to restrict separation and/or rotation of the first and second seal elements. Inclined surfaces of the first seal element interact with the second seal element to apply axial sealing forces to sealing surfaces of the second seal member.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: January 7, 2014
    Assignee: Parker-Hannifin Corporation
    Inventors: Don Bowman, Stephen Coppola, Kenneth W. Cornett, Dan Funke, Julian Kamibayashiyama, Jeff Navarro, Jeremy M. Payne, Donald J. Peterson, Douglas C. Schenk
  • Publication number: 20110232843
    Abstract: A seal for sealing an interface between a container and a lid of a process chamber. The seal comprises a first seal element and a second seal element that are arranged to seal the interface in series, with the second seal element being situated to encounter processing activity upstream of the fist seal element. The first seal element has a deflectable portion and a protrusion extending radially from the deflectable portion. The second seal element has a radially extending recess in which the protrusion of the first seal element is received. The protrusion and recess interlock to restrict separation and/or rotation of the first and second seal elements. Inclined surfaces of the first seal element interact with the second seal element to apply axial sealing forces to sealing surfaces of the second seal member.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 29, 2011
    Inventors: Don Bowman, Stephen Coppola, Kenneth W. Cornett, Dan Funke, Julian Kamibayashiyama, Jeff Navarro, Jeremy M. Payne, Donald J. Peterson, Douglas C. Schenk
  • Publication number: 20110101627
    Abstract: A gasket (10) has a retainer (30) comprising a plurality of balls encapsulated within a matrix of polymeric material (e.g., rubber). The balls are made of hard material (e.g., metal, hard plastic, ceramic, etc.) and prevent over-compression during gasket installation. The polymeric matrix provides the gasket (10) with a two-dimensional grid of joints or elbows, allowing it to conform to an almost infinite number of different flange surfaces. The matrix can be made of the same material as, and molded at the same time as, the gasket's sealing elements (40, 50, 60).
    Type: Application
    Filed: May 28, 2009
    Publication date: May 5, 2011
    Inventors: Daniel D. Labrenz, Daniel J. Funke, Donald J. Peterson, Douglas C. Schenk
  • Patent number: 7401404
    Abstract: Sealing gasket construction for providing a fluid seal intermediate a pair of opposed, mating parts or structures. The gasket includes a metal retainer and a resilient seal element received in a groove formed into the retainer. Such groove is adapted to be fabricated by coining or a like sheet metal stamping or forming process.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: July 22, 2008
    Assignee: Parker-Hannifin Corporation
    Inventors: William P. Yetter, Douglas C. Schenk, Darrell W. Rall
  • Publication number: 20040172824
    Abstract: A method of making a gasket of a variety which includes a generally annular retainer member having an inner and outer diametric extent which define a perimeter of a closed geometric shape, and at least one generally annular seal member formed of an elastomeric material and supported on the retainer member to be compressible intermediate a pair of interface surfaces for providing a fluid-tight seal therebetween. At least a first and a second retainer segment each is provided as extending intermediate a first end and a second end, and as having an inner periphery and an outer periphery. To form the retainer member, the first end of each of the retainer segments is connected to the second end of an adjacent segment such that the inner periphery of each segment defines a portion of the inner diametric extent of the retainer member, with the outer periphery of each segment defining a portion of the outer diametric extent of the retainer member.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 9, 2004
    Inventor: Douglas C. Schenk
  • Patent number: 6695357
    Abstract: A connection for threaded pipes and other tubular sections including a gasket for interposition between a first and an opposing second interface surface of the connection. The gasket includes a retainer and a generally annular seal element received in a groove formed into at least one side of the retainer. Such retainer side further is formed as having one or more channels extending extend radially through the groove and the inner or outer perimeter of the retainer. Each such channel defines a vent for relieving hydrostatic fluid pressure as the gasket is compressed between the interface surfaces.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: February 24, 2004
    Assignee: Parker-Hannifin Corporation
    Inventors: Douglas C. Schenk, Eugene J. Mannella
  • Patent number: 6669205
    Abstract: A gasket for interposition between a first and an opposing second interface surface of a sealing assembly. The gasket includes a retainer and a generally annular seal element received in a groove formed into at least one side of the retainer. Such retainer side further is formed as having one or more channels extending extend radially through the groove and the inner or outer perimeter of the retainer. Each such channel defines a vent for relieving hydrostatic fluid pressure as the gasket is compressed between the interface surfaces.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: December 30, 2003
    Assignee: Parker-Hannifin Corporation
    Inventor: Douglas C. Schenk
  • Publication number: 20030201611
    Abstract: A method of making a gasket of a variety which includes a generally annular retainer member having an inner and outer diametric extent which define a perimeter of a closed geometric shape, and at least one generally annular seal member formed of an elastomeric material and supported on the retainer member to be compressible intermediate a pair of interface surfaces for providing a fluid-tight seal therebetween. At least a first and a second retainer segment each is provided as extending intermediate a first end and a second end, and as having an inner periphery and an outer periphery. To form the retainer member, the first end of each of the retainer segments is connected to the second end of an adjacent segment such that the inner periphery of each segment defines a portion of the inner diametric extent of the retainer member, with the outer periphery of each segment defining a portion of the outer diametric extent of the retainer member.
    Type: Application
    Filed: March 21, 2003
    Publication date: October 30, 2003
    Inventor: Douglas C. Schenk
  • Patent number: 6553664
    Abstract: A method of making a gasket of a variety which includes a generally annular retainer member having an inner and outer diametric extent which define a perimeter of a closed geometric shape, and at least one generally annular seal member formed of an elastomeric material and supported on the retainer member to be compressible intermediate a pair of interface surfaces for providing a fluid-tight seal therebetween. At least a first and a second retainer segment each is provided as extending intermediate a first end and a second end, and as having an inner periphery and an outer periphery. To form the retainer member, the first end of each of the retainer segments is connected to the second end of an adjacent segment such that the inner periphery of each segment defines a portion of the inner diametric extent of the retainer member, with the outer periphery of each segment defining a portion of the outer diametric extent of the retainer member.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: April 29, 2003
    Assignee: Parker-Hannifin Corporation
    Inventor: Douglas C. Schenk
  • Publication number: 20030025328
    Abstract: A connection for threaded pipes and other tubular sections including a gasket for interposition between a first and an opposing second interface surface of the connection. The gasket includes a retainer and a generally annular seal element received in a groove formed into at least one side of the retainer. Such retainer side further is formed as having one or more channels extending extend radially through the groove and the inner or outer perimeter of the retainer. Each such channel defines a vent for relieving hydrostatic fluid pressure as the gasket is compressed between the interface surfaces.
    Type: Application
    Filed: September 4, 2002
    Publication date: February 6, 2003
    Inventors: Douglas C. Schenk, Eugene J. Mannella
  • Publication number: 20020140182
    Abstract: A gasket for interposition between a first and an opposing second interface surface of a sealing assembly. The gasket includes a retainer and a generally annular seal element received in a groove formed into at least one side of the retainer. Such retainer side further is formed as having one or more channels extending extend radially through the groove and the inner or outer perimeter of the retainer. Each such channel defines a vent for relieving hydrostatic fluid pressure as the gasket is compressed between the interface surfaces.
    Type: Application
    Filed: March 5, 2002
    Publication date: October 3, 2002
    Inventor: Douglas C. Schenk