Patents by Inventor Willdoune Hamman

Willdoune Hamman 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).

  • Trailer hitch assembly
    Patent number: 4082311
    Abstract: Presented is a trailer hitch assembly for use in connecting a trailer tongue to a conventional ball-type trailer hitch, including a socket member to grasp the trailer hitch ball while permitting pivotal movement of the trailer hitch assembly on the ball, and a sleeve mechanism for locking the trailer hitch assembly to prevent release of the trailer hitch ball by the trailer hitch assembly when the trailer hitch assembly is pivotally attached to a towing tractor, and which locks the trailer hitch assembly in a closed condition when the trailer is left unattended and disengaged from a tractor.
    Type: Grant
    Filed: March 28, 1977
    Date of Patent: April 4, 1978
    Inventor: Willdoune Hamman