Patents by Inventor Luman C. Slade

Luman C. Slade 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).

  • Safety lock apparatus for an electrical plug
    Patent number: 4640107
    Abstract: A safety lock apparatus for an electrical plug is provided which is preferably an integral one-piece plastic member having no moving parts. The apparatus cooperates with a padlock to render the prongs of the plug generally inaccessible within a block of plastic and the plug body is secured by the padlock to the block and/or to a shelf upon which the plug body is seated, a portion of the shelf being received between the padlock body and shackle of the padlock.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: February 3, 1987
    Inventor: Luman C. Slade