Safety valve for trailer

摘要

Systems and methods of overriding a conventional trailer emergency brake system to preclude and alert others as to inadvertent or premature movement of the trailer are described herein. One implementation includes a safety valve operatively positioned in the emergency braking system of a trailer that may be engaged to override the brake valve located in a tractor to prevent a truck driver from prematurely or inadvertently moving the trailer. In addition, the system may include a one way check valve to allow air upstream of the safety valve to bleed out of the brake system when the safety valve is closed (to prevent movement of the trailer) before the emergency brakes for the trailer are set by the driver. A communication system may also be provided to alert the driver via a remotely located computing device that the emergency brakes for the trailer need to be set.

主权项

1. A safety valve system for a trailer having an emergency parking brake system, comprising:
a safety valve interposed within an air line for selectively blocking or allowing the flow of air to at least one parking brake of a trailer; and a handle attached to the safety valve, the handle being movable between a first position and a second position, the handle being disposed adjacent the trailer, a one way check valve having an inlet line and an outlet line in communication with the one way check valve, the inlet line being connected to a portion of the air line upstream of the parking brake and the outlet line being connected to a portion of the air line between a compressed air source and the safety valve, wherein:
the one way check valve and the safety valve are separate from and in parallel with each other,movement into the first position urges the safety valve into a closed position and movement into the second position moves the safety valve into an open position, andthe closed position precludes air from continuously flowing from the compressed air source through the safety valve to the parking brake.