Importance

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Abstract

A operating system for slider locking pins includes an air compressor connected to an air supply tank. An air pressure protection valve is connected to the air tank to protect the brake system of the trailer. A flipper valve is connected to the air pressure protection valve and provides selective fluid communication between the air tank and a plurality of locking pin driver assemblies. Each locking pin driver assembly is adapted to move a locking pin to a disengaged position when in fluid communication with the air tank while being adapted to move the locking pin to the engaged position when not in fluid communication with the air tank. Each driver assembly is configured to substantially provide protection to each of its elements from adverse weather conditions and articles thrown up from the road. In one embodiment, the driver assembly includes a fixed bracket attached to the frame of the sliding undercarriage. A traveling bracket is connected to a locking pin. A return spring is disposed about locking pin and disposed to create a constant force driving the locking pin to the engaged position. An expandable air bladder is disposed between the fixed bracket and the traveling bracket. The expandable bladder is in fluid communication with the flipper valve such that when the flipper valve is manipulated to provide fluid communication between the air bladder and the air tank, the air bladder expands driving the locking pin to the disengaged position.

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First Claim