Patents by Inventor Ronnie D. Davidson

Ronnie D. Davidson 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).

  • Ground fault circuit breaker with mechanical indicator for ground fault trips
    Patent number: 4382270
    Abstract: A ground fault circuit breaker including ground fault interruption means and overload interruption means that are independently responsive to open a common set of breaker contacts upon respective ground fault and overload conditions is provided with a trip indicator visible external to the breaker that operates on actuation of the ground fault interruption means but not upon operation of the overload interruption means, the trip indicator being a mechanical device that is actuated upon the movement of the solenoid plunger that operates upon occurrence of a ground fault condition.
    Type: Grant
    Filed: April 7, 1981
    Date of Patent: May 3, 1983
    Assignee: Westinghouse Electric Corp.
    Inventors: Ronnie D. Davidson, Bruce S. Preston
  • Ground fault circuit breaker with ground fault trip indicator
    Patent number: 4344100
    Abstract: A ground fault circuit breaker including ground fault interruption means and overload interruption means that are independently responsive to open a common set of breaker contacts upon respective ground fault and overload conditions with a trip indicator visible external to the breaker that operates on actuation of the ground fault interruption means but not upon operation of the overload interruption means with means for electrically actuating the trip indicator upon occurrence of a ground fault condition that actuates the ground fault interruption means.
    Type: Grant
    Filed: August 7, 1980
    Date of Patent: August 10, 1982
    Assignee: Westinghouse Electric Corp.
    Inventors: Ronnie D. Davidson, John J. Misencik
  • Multipole ground fault circuit interrupter with trip level adjustment
    Patent number: 4208688
    Abstract: Multipole ground fault circuit interrupter apparatus with a compensation network for maintaining a constant trip level despite less than all power poles being energized. The compensation network has matched resistors respectively connected to each power pole and an additional resistor connected to the common point of the matched resistors in a branch passing through the differential current transformer core from the load side to the supply side and connected to the neutral conductor, producing a desensitizing current when less than all poles are energized.
    Type: Grant
    Filed: September 13, 1978
    Date of Patent: June 17, 1980
    Assignee: Westinghouse Electric Corp.
    Inventors: John J. Misencik, Ronnie D. Davidson