Patents by Inventor William Duchaine, Jr.

William Duchaine, Jr. 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: 5622398
    Abstract: A device for gripping a cylindrical pin. The gripping device has a pair of gripping jaws and a pair of angled levers. The gripping jaws each have interior surfaces disposed in opposing relation and defining a space between the interior surfaces to receive and engage a cylindrical pin. The angled levers each carry one of the gripping jaws near the end of the lever, the levers being further disposed to pivot in angular relation so as to vary the space between the interior surfaces of the gripping jaws and thus grip cylindrical pins of varying sizes. A lock is disposed to cooperate with the angled levers for biasing the angled levers toward each other to engage the cylindrical pin. A handle is attached to the levers for applying a force to the levers and thus to the cylindrical pin engaged by the gripping jaws, the force being directed substantially axially to the cylindrical pin.
    Type: Grant
    Filed: October 5, 1995
    Date of Patent: April 22, 1997
    Inventor: William Duchaine, Jr.