Patents by Inventor Thomas J. Weir

Thomas J. Weir 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: 4485656
    Abstract: The invention pertains to a piston for use in vehicle automatic transmissions and the method of making the same. An automatic transmission piston is of an annular configuration having a radial pressure face and an axially extending flange which includes an outer periphery in which a seal receiving groove is defined. The invention produces the piston from a sheet metal stamping blank and the blank flange is of a greater axial dimension than that of the flange after forming.
    Type: Grant
    Filed: August 27, 1982
    Date of Patent: December 4, 1984
    Assignee: Hayes Albion Corporation
    Inventors: Carl A. Nilson, Thomas J. Weir
  • Patent number: 4018428
    Abstract: An improved automotive shock absorber assembly comprises a housing containing a fluid, a shaft extending axially into the housing, a piston head connected to the shaft within the housing, a volute spring cooperating with the shaft and piston head and adapted to compress in the fluid when the shaft is subjected to axial loads, means for sealing the housing to prevent the leakage of liquid therefrom, and means for maintaining the shaft in axial alignment within the housing when the shaft is subjected to off-axis loads.
    Type: Grant
    Filed: July 30, 1975
    Date of Patent: April 19, 1977
    Assignee: Hayes-Albion Corporation
    Inventor: Thomas J. Weir
  • Patent number: D356990
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: April 4, 1995
    Assignee: Northrop Grumman Corporation
    Inventors: Thomas J. Weir, Heinz A. Gerhardt, Robert V. Dunkason, Randall B. Hall