Patents by Inventor DeWayne J. Shumway

DeWayne J. Shumway 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: 4234863
    Abstract: An inductive pickup clip comprising two telescoping body portions between which is compressed a main body spring and within which are mounted respective core portions. When the clip is closed, said core portions define an opening adapted to receive therethrough an electric wire during use. The end portions of at least one core portion are spring loaded to prevent chipping or breakage of the core portions and to insure correct alignment of the cores when the clip is closed. A bi-stable latching mechanism is employed which, when latched, holds the clip closed, and when unlatched, permits the spring loaded telescoping body portions to assume an open configuration under the urging of the main body spring therebetween. Such a latching mechanism insures that when the slip is closed about the electric wire to be monitored, the user must close it against the force of the main body spring, thereby further preventing chipping or breakage of the core portions.
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: November 18, 1980
    Assignee: Dixson, Inc.
    Inventors: DeWayne J. Shumway, Delbert D. Gennetten
  • Patent number: D249484
    Type: Grant
    Filed: January 6, 1977
    Date of Patent: September 19, 1978
    Assignee: Dixson, Inc.
    Inventors: DeWayne J. Shumway, William F. Burke
  • Patent number: D261738
    Type: Grant
    Filed: October 30, 1979
    Date of Patent: November 10, 1981
    Assignee: Dixson, Inc.
    Inventor: DeWayne J. Shumway