Patents by Inventor Roy L. Gallagher

Roy L. Gallagher 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).

  • Locking bolts for vehicle exhaust manifold pipes
    Patent number: 4940374
    Abstract: An anti-rotation locking assembly for releasably fastening automotive exhaust pipes and exhaust manifolds to an engine block is disclosed comprising a threaded bolt with hex-wrenching recess and a hyperbolic locking plate with hex-stud which fits into the wrenching recess of the bolt and is attached thereto by cotter pin or Q clip. The locking plate has a contour which mates with said exhaust pipe and thereby prevents the bolt from working loose due to vibration of the engine.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: July 10, 1990
    Inventor: Roy L. Gallagher
  • Bolt for exhaust manifold
    Patent number: D319574
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: September 3, 1991
    Inventor: Roy L. Gallagher
  • Bolt for exhaust manifold
    Patent number: D320734
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: October 15, 1991
    Inventor: Roy L. Gallagher