Patent ID: 8464853

Claim:
An apparatus for automatic centrifugal engagement of a pressure plate, the apparatus comprising: a center clutch coupled rotationally with a transmission input shaft; a clutch basket coupled rotationally with an engine output shaft; a clutch pack disposed between the center clutch and the clutch basket, the clutch pack comprising a plurality of drive plates rotationally coupled to the center clutch and a plurality of friction plates rotationally coupled with the clutch basket; a centrifugal pressure plate assembly that is spring-loaded and disposed between the center clutch and the clutch basket, the centrifugal pressure plate assembly comprising a pressure plate, a spring plate, and a spring disposed between the pressure plate and the spring plate; a rotating standoff hub passing through and rotationally coupled with the center clutch and an engagement spring configured to apply a spring force to said centrifugal pressure plate assembly through the rotating standoff hub to prevent engagement of the clutch pack until the centrifugal pressure plate assembly has reached a predetermined speed.