Patents by Inventor Paul Norcross

Paul Norcross 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).

  • Coupler for grease guns
    Patent number: 4195812
    Abstract: A grease gun coupler for attachment to a Zerk fitting, the coupler having a rotatable socket to constrict the jaws onto the Zerk fitting; there being a non-yielding multi-part mechanical connection between the rear edges of the clamping jaws and the front end of the tubular base of the coupler, including a rigid sleeve bearing rearwardly against the tubular base of the coupler and having rigid legs projecting through the base wall of a cup-shaped seal and bearing against the annular disc which engages the jaws.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: April 1, 1980
    Assignee: Thexton Manufacturing Company
    Inventor: Paul Norcross