Patents by Inventor Frederick Ronald Hatch

Frederick Ronald Hatch 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).

  • Bonded PTFE radial shaft seal
    Patent number: 6988733
    Abstract: A radial shaft seal having a metal casing and a rubber sealing portion attached interior of the metal casing. The rubber sealing portion is bonded to the metal casing during a forming operation. A polytetrafluoroethylene seal is stretched into a conical shape and bonded to the rubber sealing portion while in the stretched state.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: January 24, 2006
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Frederick Ronald Hatch
  • Bonded PTFE radial shaft seal
    Publication number: 20040160016
    Abstract: A radial shaft seal having a metal casing and a rubber sealing portion attached interior of the metal casing. The rubber sealing portion is bonded to the metal casing during a forming operation. A polytetrafluoroethylene seal is stretched into a conical shape and bonded to the rubber sealing portion while in the stretched state.
    Type: Application
    Filed: February 13, 2003
    Publication date: August 19, 2004
    Inventor: Frederick Ronald Hatch
  • Self-centering shaft seal system
    Patent number: 6367810
    Abstract: A seal assembly is undersized in relation to the bore in which it is installed to permit radial floating of the seal assembly within the bore to enable precise coaxial alignment between the seal assembly and shaft, despite misalignment between the axis of the shaft and the axis of the bore. A retaining ring urges a face seal of the seal assembly into static sealing engagement with the stepped face of the bore to prevent leakage of the fluid around the seal assembly.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: April 9, 2002
    Assignee: Federal-Mogul World Wide, Inc.
    Inventor: Frederick Ronald Hatch