Patents by Inventor Michael D. Frohwein

Michael D. Frohwein 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).

  • Seal assembly for a fluid pressure control device
    Patent number: 8550117
    Abstract: A seal assembly for a fluid pressure control device includes a guide element having a sealing surface and a first guide surface. A throttling element assembly includes a throttling element positionable within a fluid flow path, the assembly defines a mating surface adapted to seal with the sealing surface, and a second guide surface sized to slidingly engage the first guide surface. A relief void is formed in at least one of the guide element and the throttling element assembly adjacent the first and second guide surfaces to receive loose solid material, to thereby prevent disruption of the seal formed between the sealing surface and the mating surface.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: October 8, 2013
    Inventors: Michael W. McCarty, Donald R. Bush, Daniel M. Adams, Frederick W. Catron, Michael D. Frohwein
  • Seal Assembly for a Fluid Pressure Control Device
    Publication number: 20090309059
    Abstract: A seal assembly for a fluid pressure control device includes a guide element having a sealing surface and a first guide surface. A throttling element assembly includes a throttling element positionable within a fluid flow path, the assembly defines a mating surface adapted to seal with the sealing surface, and a second guide surface sized to slidingly engage the first guide surface. A relief void is formed in at least one of the guide element and the throttling element assembly adjacent the first and second guide surfaces to receive loose solid material, to thereby prevent disruption of the seal formed between the sealing surface and the mating surface.
    Type: Application
    Filed: August 24, 2009
    Publication date: December 17, 2009
    Applicant: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Michael W. McCarty, Donald R. Bush, Daniel M. Adams, Frederick W. Catron, Michael D. Frohwein
  • Seal assembly for a fluid pressure control device
    Patent number: 7578314
    Abstract: A seal assembly for a fluid pressure control device includes a guide element having a scaling surface and a first guide surface. A throttling element assembly includes a throttling element positionable within a fluid flow path, the assembly defines a mating surface adapted to seal with the sealing surface, and a second guide surface sized to slidingly engage the first guide surface. A relief void is formed in at least one of the guide element and the throttling element assembly adjacent the first and second guide surfaces to receive loose solid material, to thereby prevent disruption of the seal formed between the sealing surface and the mating surface.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: August 25, 2009
    Assignee: Fisher Controls International LLC
    Inventors: Michael W. McCarty, Donald R. Bush, Daniel M. Adams, Frederick W. Catron, Michael D. Frohwein