Patents by Inventor Kerry Drew

Kerry Drew 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).

  • Low profile inertia switch
    Patent number: 4973804
    Abstract: A diaphragm-type inertia switch for sensing deceleration places the inertial mass in the chamber that contains the contacts. The other chamber has a thin concave-convex shape that gives the switch a low profile. The switch has a molded plastic base containing a test coil for attracting the inertial mass to test the switch. A mechanism for calibrating the switch is also included.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: November 27, 1990
    Assignee: Siemens Automotive Limited
    Inventors: John E. Cook, Kerry Drew