Patents by Inventor Donald R. Leisey

Donald R. Leisey 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).

  • Patent number: 5326289
    Abstract: A female electrical connector formed of sheet metal to receive a cylindrical male pin. The connector is configured as hyperboloid of revolution with the generatrices comprising a plurality of flat and straight beam members disposed between a pair of cylindrical ferrules. The beam members bear against the inserted pin along a contact length so the bearing therebetween is a surface of each beam member partially wrapping around the pin to effect electrical continuity therebetween.The beam members are automatically formed when the ferrules are rolled into cylinders without any part of the tooling touching the beams.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: July 5, 1994
    Inventor: Donald R. Leisey
  • Patent number: 5215481
    Abstract: An electrical connector contacts assembly having a solid elongated pin member and a hollow socket member each having like cross-sections for closely removably inserting the pin through the socket. The socket body is twisted into a helical configuration while the pin is straight-sided. The assembly of the members reconfigures the more resiliant socket into the configuration of the pin setting up torsional stresses that create a uniformly distributed torsional force load between the pin and socket for achieving low electrical resistance therebetween.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: June 1, 1993
    Inventor: Donald R. Leisey
  • Patent number: 4752240
    Abstract: Connector assembly having a housing with multiple terminal receiving channels therein, each channel open at one end and closed at the other end with apertured closing members, conductive wires having access to the terminals through the aperture. The housing, and conductive wires are encapsulated within a dielectric plastic.
    Type: Grant
    Filed: November 29, 1982
    Date of Patent: June 21, 1988
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Paul R. Jagen, Donald R. Leisey