AUTOMATIC SELF-RESETTING PARKING BRAKE

摘要

A parking brake having an output lever connected at a first pivot point to a brake rod, at a second pivot point to a automatic fluid responsive actuator and at a third point to one end of a chain of a standard manual releaseable parking brake unit. The other end of the chain is conencted to a reset lever which is activated by the automatic actuator to reset the manual parking brake unit after manual release and during automatic release. The automatic actuator includes an air spring to drive a piston and a simple interlock valve connecting the air spring to a brake line.