Patent ID: 11866017
Assignee: WABTEC FAIVELEY NORDIC AB
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 12:
13. A brake actuator for a brake cylinder of a railway vehicle brake system, said brake actuator comprising:
a thrust sleeve configured to provide braking force to said brake system;
a slide mounted in said thrust sleeve and movable axially between a release position and a locking position;
a piston biased by resilient means and linked to an anchoring member; and
a plurality of balls disposed in respective openings of said sleeve between the slide and the anchoring member;
wherein said balls in said locking position are configured to move under action of a profiled surface of the slide to adopt a projecting position in relation to said sleeve to axially couple the anchoring member with the sleeve;
wherein said balls in said release position are configured to adopt a retracted position in relation to said sleeve to axially uncouple the anchoring member from the sleeve; and
wherein said anchoring member comprises an annular portion with an open end portion receiving said sleeve, and a bottom end portion provided with a centrally arranged orifice.