Patents by Inventor Stephen W. Zutrauen

Stephen W. Zutrauen 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).

  • Method and apparatus for testing magnetic sensors using a saturable core and variable load resistors to simulate actual test conditions
    Patent number: 3956693
    Abstract: A method and apparatus for electronically testing magnetic sensors such as monopoles, proximity switches and other magnetic pickups by placing a magnetizable core adjacent the sensor and energizing the core to periodically saturate it. This periodic saturation will change the reluctance adjacent the sensor and thereby simulate conditions under which the sensor is to be used. Both A.C and D.C. energization of the core is employed. The output circuit of the sensor is equiped with variable resistors whereby the equivalent load conditions of the sensor may also be simulated.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: May 11, 1976
    Assignee: The Garrett Corporation
    Inventors: Stephen W. Zutrauen, Peter P. Stauskas