Patents by Inventor Raymond Wharrie

Raymond Wharrie 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).

  • Electrical safety plug and socket combination
    Patent number: 4306374
    Abstract: An electrical safety plug having two prongs receivable in a complementary socket having two terminal holes, the plug and socket combination being polarized so that the relationship between the prongs and terminals is non-reversible. The plug body has integral therewith a safety tab so positioned that when the plug is correctly inserted in the socket, the tab lies under the body of the socket. The tab blocks insertion when the user seeks to make an incorrect insertion in the complementary socket or in the event the user tries to plug into any other socket.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: December 22, 1981
    Assignee: Durham Industries, Inc.
    Inventor: Raymond Wharrie