Patent ID: 7847423
Filing Date: 2010-12-07
Classification: F02B,H02J,H02K,Y02E

Abstract:
1. A means for sensing speed differential between two rotating elements for use on a power system to activate a backup power generator when a primary power generator shuts down comprising: A) a sensor plate connected to a first rotating element for rotation therewith, the first rotating element rotating at a first rotational speed; B) a ramp on the sensor plate; C) a base connected to a second rotating element for rotation therewith, the second rotating element rotating at a second rotational speed; D) an element fixed to the base in a position to slid-ably engage the ramp when the first and second rotational speeds differ from each other; and E) a coupling element movably coupling the base to the sensor plate so the sensor plate moves away from the base as the element engages the ramp.