Patents by Inventor Sidney R. Fletcher

Sidney R. Fletcher 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).

  • Anti-theft system
    Patent number: 4803460
    Abstract: An anti-theft system for sensing the removal of an ignition lock assembly from its housing utilizing a grounding switch within the housing that is biased to disconnect an electrical path when the ignition switch is forcibly removed. An associated circuit provides continuous monitoring of the conduction path within the housing when the ignition switch it turned off.
    Type: Grant
    Filed: May 18, 1987
    Date of Patent: February 7, 1989
    Assignee: Ford Motor Company
    Inventors: Dennis W. Rhee, Sidney R. Fletcher
  • Lamp dimmer control with integral ambient sensor
    Patent number: 4368406
    Abstract: A lamp dimmer control utilizing a variable resistor and an associated adjustment mechanism having an ambient light sensor mounted integral to the control so as to receive ambient light external to the control housing via a translucent adjustment mechanism. Constant contrast illumination control is achieved by pulse width modulation techniques in accordance with the output of the variable resistance setting and the output of the ambient light sensor.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: January 11, 1983
    Assignee: Ford Motor Company
    Inventors: Joseph K. Kruzich, Sidney R. Fletcher