Patent ID: 6276497
Filing Date: 2001-08-21
Classification: B60T,F16D

Abstract:
A brake actuator for delivering a brake force through a brake block to a rotating member to be braked, the actuator comprising in a housing a service brake arrangement, including an electric motor and means for transforming rotary movement of the motor into an axial movement of a push rod, and a safety brake arrangement, including at least one powerful spring, acting in a brake application direction, means for tensioning the at least one spring by a reaction force at a service brake application, and mechanical means for locking the at least one spring to the housing in a tensioned state, which means for locking can be released at will for accomplishing a safety brake application, wherein the at least one spring of the safety brake arrangement is arranged substantially transverse of the push rod and is arranged to act thereon over at least one wedge.