Patents by Inventor David L. Hatrock

David L. Hatrock 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: 4983086
    Abstract: A manually manipulatable nut and bolt fastener for a battery terminal clamp provides an nut configured to engage one of the fingers of a typical bifurcated battery terminal clamp and a bolt engaging the other finger to move the fingers relatively responsive to nut-bolt motion. The nut-bolt combination is formed of flexibly resilient polymeric material to deform to accommodate axial and lateral repositioning and alignment of the bolt as the battery clamp fingers move relatively to each other. The fastener eliminates normal corrosion associated with metallic fasteners for battery terminal clamps.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: January 8, 1991
    Inventor: David L. Hatrock