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US 6,318,813 B1Granted
Air spring reservoir emergency brake backup system
AssigneeHoneywell Commercial Vehicle Systems Company
InventorDavid J. Goodell
Life of this patent
Estimating the term…
Abstract
An emergency brake backup system is achieved by selectively interconnecting the air suspension as an additional reservoir to the air brake system. That is, if the charging system or primary reservoir fails, compressed air in the air spring reservoirs is used as an energy source to supply the pressurized air required for brake function. This can be achieved with minor modification to existing tractor and trailer brake systems that employ air suspension assemblies.
Claims13
A backup assembly for a vehicle air brake
- at least one air actuated brake assembly;
- a reservoir providing pressurized air for the brake assembly;
- a suspension assembly having an air spring reservoir for supporting at least a portion of a load imposed on the vehicle;
- and
- a valve assembly operatively associated with the reservoir and the suspension assembly for connecting the air spring reservoir to the brake assembly in response to failure of the reservoir, wherein said valve assembly includes a check valve interposed between the reservoir and the air spring reservoir, and said check valve is a double check valve that shuttles between first and second positions, in the first position the brake assembly is isolated from the air spring reservoir and in communication with the reservoir, and in the second position the brake assembly is isolated from the reservoir and in communication with the air spring reservoir.
2 more elements
A backup assembly for a heavy vehicle air brake system comprising:
- an air brake assembly including a primary reservoir providing pressurized air for the brake assembly;
- a suspension assembly having an air spring reservoir for supporting a load imposed on the vehicle;
- an air line interconnecting the air brake assembly with the air spring reservoir;
- and
- a check valve assembly provided in the air line and in operatively association with the air brake assembly and the suspension assembly for connecting the air spring reservoir to the brake assembly in response to failure of the primary reservoir,
- a trailer brake system including a trailer reservoir that supplies compressed air to wheel brakes and a line interconnecting a trailer air suspension assembly with the trailer brake system having a check valve assembly therein that allows compressed air in the trailer suspension assembly to be used for operating the trailer brake system if the trailer reservoir malfunctions,
- said trailer brake system including a modulating valve controlling application of compressed air to the wheel brakes and the check valve assembly including a first check valve interposed between the trailer reservoir and the modulating valve to prevent the trailer air suspension assembly from being depleted through a malfunctioning trailer reservoir.
4 more elements
A backup assembly for a vehicle air brake system comprising:
- at least one air actuated brake assembly;
- a reservoir providing pressurized air for the brake assembly;
- a suspension assembly having an air spring reservoir for supporting at least a portion of a load imposed on the vehicle;
- and
- a valve assembly operatively associated with the reservoir and the suspension assembly for connecting the air spring reservoir to the brake assembly in response to failure of the reservoir,
- a trailer brake system including a trailer reservoir that supplies compressed air to wheel brakes and a line interconnecting a trailer air suspension assembly with the trailer brake system, a modulating valve controlling application of compressed air to the wheel brakes, and a first check valve interposed between the trailer reservoir and the modulating valve to prevent the trailer air suspension assembly from being depleted through a malfunctioning trailer reservoir.
3 more elements
Dependencies are inferred from the claim text.