Patents by Inventor Donald C. Plaster, Jr.

Donald C. Plaster, 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).

  • Pull chain lampholders for mounting upon outlet boxes
    Patent number: 5842780
    Abstract: A pull chain outlet box lampholder which is assembled at the factory and does not require the mating of parts of dissimilar material in the field. A body member has a recess in its rear face to accept a switch assembly. A bore in the neck of the body member receives a threaded screwshell. Fasteners extend from the screwshell to the switch assembly to assemble these parts and to clamp an annular ring in the bore between them whereby the switch assembly and the screwshell are held in assembly to each other and to the body member.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: December 1, 1998
    Assignee: Leviton Manufacturing Co., Inc.
    Inventors: Leonard S. Causby, Donald C. Plaster, Jr., Rick L. Wyke