Patent ID: 6565465
Filing Date: 2003-05-20
Classification: F16H

Abstract:
A continuously variable belt transmission comprising:a power transmitting member provided on a rotary member, said power transmitting member including a portion movable in an axial direction of said rotary member; a belt wound around said power transmitting member; a first hydraulic chamber positioned to apply a holding force in said axial direction to said portion of said power transmitting member; a second hydraulic chamber positioned to apply a force in said axial direction to said power transmitting member, so as to weaken said holding force; a first oil passage provided in said rotary member, through which a hydraulic pressure is supplied to said second hydraulic chamber; an oil passage forming member which is mounted to said rotary member, disposed along a path from said first oil passage to said second hydraulic chamber, and provided with a first grooved portion that connects said second hydraulic chamber and said first oil passage, said first grooved portion faces said first oil passage, wherein parts attached to said rotary member are disposed on both axial sides of said oil passage forming member.