Brake actuator.

摘要

A brake actuator has a force applying means 7 actuated by a rotary actuator shaft 6 and arranged to separate opposed tappets 14 to actuate braking elements 1, 2. The tappets are of variable length controlled by adjuster means to maintain a substantially constant predetermined clearance between the braking elements and a braking surface. The tappets 14 are interconnected by a ring gear 28 concentric with the shaft 6, the ring gear being driven by the shaft 6 via the adjuster mechanism 20 to adjust both tappets 14 simultaneously.