FRICTION PLATE Russian patent published in 2010 - IPC F16D69/02 C08J5/14 

FIELD: machine building.

SUBSTANCE: friction plate for torque transfer includes composite friction element fixed on metal frame and containing fibrous and various disperse particles. As some of disperse particles in friction element there are particles of water aluminium silicate capable, at operating effects on the plate, of forming regular structure of pores for absorption of decomposition products at the moment of friction contact and removal of decomposition products in gaps between friction contacts.

EFFECT: reducing the possibility of changing the transferred torque in case of penetration of drilling agents, oil products and surface active substances to friction contact zone.