Patents by Inventor Kenneth S. Lewallen

Kenneth S. Lewallen 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).

  • Accelerometer and method of manufacture
    Patent number: 5755978
    Abstract: Accelerometer and method in which parts such as the seismic mass and force sensors are all fabricated of a single material such as crystalline quartz and bonded together in a manner which reduces the possibility of creep between them. Damping plates and squeeze film gas damping dampen movement of the seismic mass, and the parts are oriented in a predetermined manner relative to the crystallographic axes of the wafers from which they are fabricated to control the character of breakaway tabs which hold the parts to the wafers during fabrication.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: May 26, 1998
    Assignee: BEI-Systron Donner
    Inventors: G. Richard Newell, Kenneth S. Lewallen, Scott D. Orlosky, Bert D. Egley
  • Accelerometer and method of manufacture
    Patent number: 5644083
    Abstract: Accelerometer and method in which parts such as the seismic mass and force sensors are all fabricated of a single material such as crystalline quartz and bonded together in a manner which reduces the possibility of creep between them. Damping plates and squeeze film gas damping dampen movement of the seismic mass, and the parts are oriented in a predetermined manner relative to the crystallographic axes of the wafers from which they are fabricated to control the character of breakaway tabs which hold the parts to the wafers during fabrication.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: July 1, 1997
    Assignee: New SD, Inc.
    Inventors: G. Richard Newell, Kenneth S. Lewallen, Scott D. Orlosky, Bert D. Egley