Patents by Inventor Andrew M. Madonio

Andrew M. Madonio 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: 5078533
    Abstract: A seal is held against the end of the sleeve of a driveline yoke by a retainer formed with angularly spaced windows having axially facing edges which snap past and lock behind angularly spaced lugs on the sleeve when the retainer is telescoped onto the sleeve. Release of the retainer is effected by twisting the retainer to cause circumferentially facing side edges of the windows to cam against sloped side surfaces of the lugs and deflect the axially facing edges of the windows outwardly from behind the lugs so as to permit the retainer to be slipped axially off of the sleeve.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: January 7, 1992
    Assignee: Rockford Powertrain, Inc.
    Inventors: Andrew M. Madonio, Bruce S. Giersch
  • Patent number: 4539775
    Abstract: A locking mechanism for coach door leaves of the type which are rotated and then driven axially upward by a powered door operating mechanism. Male and female locking bodies at the top of the door leaf shaft move together and apart axially without being radially engaged as the door leaf moves in or out at final closed position. Any external outward pushing force on the door leaf radially engages the locking bodies to prevent door opening.
    Type: Grant
    Filed: April 6, 1984
    Date of Patent: September 10, 1985
    Assignee: General Motors Corporation
    Inventors: Andrew M. Madonio, Michael H. Gulick