INTERNAL AIR ASSISTED BRAKE ACTUATOR

摘要

A spring emergency and parking brake which is further air-assisted for added force in the application of the spring emergency brake; that is, there is a combination of air and spring pressure utilized to apply the brakes in an emergency situation when the primary or service air source, normally employed in operating the brakes, fails in one way or another. The source of the air-assisting force is internal to the brake actuator housing and derives from the air used to compress the emergency spring.