Patents by Inventor John C. Winchester

John C. Winchester 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).

  • High-pressure face seal
    Patent number: 9086157
    Abstract: Described is a valve face seal assembly. The assembly includes a moveable member, such as a poppet, and a seal having a sealing portion carried by the moveable member. A seat opposite the sealing portion of the seal has a transaxial seat face and an axial seat face extending axially toward the moveable member at an obtuse angle from the transaxial seat face. When the seal of the moveable member is brought into contact with the seat, a seal is formed with the transaxial seat face and with the axial seat face.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: July 21, 2015
    Assignee: PARKER-HANNIFIN CORPORATION
    Inventors: Gordon D. Rowe, John C. Winchester
  • HIGH-PRESSURE FACE SEAL
    Publication number: 20120193565
    Abstract: Described is a valve face seal assembly. The assembly includes a moveable member, such as a poppet, and a seal having a sealing portion carried by the moveable member. A seat opposite the sealing portion of the seal has a transaxial seat face and an axial seat face extending axially toward the moveable member at an obtuse angle from the transaxial seat face. When the seal of the moveable member is brought into contact with the seat, a seal is formed with the transaxial seat face and with the axial seat face.
    Type: Application
    Filed: December 23, 2011
    Publication date: August 2, 2012
    Inventors: Gordon D. Rowe, John C. Winchester