Patents by Inventor Michael J. Rinker

Michael J. Rinker 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).

  • Mating electrical safety plug and receptacle
    Patent number: 5248268
    Abstract: A mating electrical safety plug and receptacle. The plug includes a set of non-conductive tubular prongs, each of which shrouds a conductive element. The ends of each prong are open to receive a corresponding central post of the receptacle. The plug may include a ground prong. The receptacle is provided with a set of openings, each opening adapted to receive a corresponding prong. Each opening has a central post concentrically disposed, thus producing an annular cavity for the receipt of a tubular prong. Each central post includes a recess having a conductive element disposed therein. The receptacle may also be provided with a ground opening to accommodate a plug with a ground prong. The conductive element recessed within each central post engages with a respective conductive element shrouded by a corresponding prong. These mating conductive elements engage only when the plug is fully connected.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: September 28, 1993
    Inventor: Michael J. Rinker
  • Electrical safety plug
    Patent number: D347621
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: June 7, 1994
    Inventor: Michael J. Rinker