Patents by Inventor Nelson H. Winquist

Nelson H. Winquist 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).

  • Relay switch apparatus
    Patent number: 4638274
    Abstract: A multi-positional mercury switch (1, 2, 3) for use with miniature relays (4). The mercury switch apparatus has mercury wettable magnetic contact structures (11, 12, 211, 212, 221, 222, 311, 312) supported in a sealed envelope member (10, 20, 30) supporting the magnetic contact structures with ends thereof extending from the envelope member for interconnection with terminals of the relay. A mercury holding assembly (13, 14, 23, 24, 33, 34) is slidably located within the sealed envelope member adjacent the magnetic contact structures and is responsive to an external magnetic field generated by electrical signals in a coil (410) surrounding the sealed envelope member for engaging the magnetic contact structures and establishing an electrical conducting path between the magnetic contact structures.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: January 20, 1987
    Assignee: AT&T Bell Laboratories
    Inventors: Wendel E. Archer, James L. Milton, Paul W. Renaut, Nelson H. Winquist