Patents by Inventor David J. Schaap

David J. Schaap 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: 4222037
    Abstract: A cooking cycle timer includes two timing circuits, each incorporating an oscillator and a counter. The first timing circuit times the first portion of a cooking cycle, and the second timing circuit times a predetermined second portion. At the end of the first portion, a visible indicator is turned on to indicate that the predetermined second portion of time remains in the cooking cycle. At the end of the second portion, and thereby the end of the cooking cycle, the visible indicator and an audible indicator are operated in pulsed fashion through the operation of a third oscillator. Visible indication is also provided during the first portion of the cooking cycle to show that the timing circuit is active.
    Type: Grant
    Filed: December 5, 1978
    Date of Patent: September 9, 1980
    Assignee: General Electric Company
    Inventors: David J. Schaap, Donald L. Watrous