Patent ID: 8459430

Claim:
An apparatus for centrifugal engagement of a clutch comprising: a clutch basket, a pressure plate, a center clutch and a clutch pack disposed between said pressure plate and said center clutch and capable of coupling said clutch basket with said center clutch; an expanding friction disk assembly disposed between said center clutch and said pressure plate, said expanding friction disk assembly having a first plate, a second plate, at least one centrifugal actuating member disposed between said first plate and said second plate, at least one ramping mechanism disposed between said centrifugal actuating member and said first plate and at least one biasing spring disposed between said first plate and said second plate; wherein said biasing spring provides a force to urge said first plate and said second plate towards each other and wherein when said expanding friction disk assembly is rotated above a threshold speed, said centrifugal actuating member moves radially outward against the force of said biasing spring and said ramping mechanism causing said expanding friction disk assembly to expand.