Patents by Inventor Hugh M. Prather

Hugh M. Prather 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).

  • Oil filter wrenches with self tightening capabilities
    Patent number: 5333522
    Abstract: An oil filter wrench with self tightening capabilities for grasping and rotating a cylindrical oil filter can comprising, in combination, a wrench for grasping and rotating a cylindrical object filter can comprising, a strap fabricated of a flexible material having a fixed end and a free end, a ring platform with the fixed end of the strap slidably coupled thereto, an arcuate guide slot formed in the ring platform with a roller slidable therealong, the roller being coupled to the fixed end of the strap to allow limited sliding movement of the roller and the fixed end of the strap with respect to the ring platform, a spring resiliently coupling the roller and the free end of the strap to the ring platform, a flexible cable coupled at one end to the free end of the strap and guide means to control the movement of the cable with respect to the free end of the strap, and a handle coupled the ring platform to effect rotation of the strap with respect to a cylindrical object held by the strap and coupled to the oth
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: August 2, 1994
    Inventors: Don G. Prather, Hugh M. Prather