Patent ID: 6652042
Filing Date: 2003-11-25
Classification: B60R,B60T,Y10T

Abstract:
A locking system for trailer air brakes of the type having a supply air line with a gladhand for being connected to an air supply from a tractor for disengaging the trailer air brakes from an actuated position, said locking system comprising:a valve connected to the trailer supply air line, said valve being actuatable between an open position, wherein said valve enables air conveyed in the trailer supply air line to disengage the trailer air brakes from the actuated position, and an exhaust position, wherein said valve exhaust air through an exhaust port thereof from the trailer supply air line such that the trailer air brakes remain in the actuated position, said valve moving automatically to said exhaust position when the tractor air supply is disconnected from the gladhand so as to cause the trailer air brakes to be engaged in the actuated position; and a locking device having a portion being automatically displaceable to a locking position when said valve is actuated to said exhaust position so as to lock said valve in said exhaust position, and being displaceable to a disarmed position by manual disarming means for unlocking said locking device and displace said valve to said open position.