Patents by Inventor Benjamin Lumm, Jr.

Benjamin Lumm, 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).

  • Combined extension cord and grounding device
    Patent number: 3993380
    Abstract: A combined extension cord and grounding device includes a two conductor cable having a two prong plug at one end and a housing on the other end carrying a three element socket. A grounding wire connected to a ground socket element thereof is wound about a reel within the housing and a free end of the wire exits the housing and is terminated with an alligator clip. A crank handle carried by the housing engages the reel for manual rotation thereof for selective deployment of the grounding wire.
    Type: Grant
    Filed: January 21, 1976
    Date of Patent: November 23, 1976
    Assignee: Lawrence Peska Associates, Inc.
    Inventor: Benjamin Lumm, Jr.