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US 5,393,130 AGranted
Method of supplying a higher pressure reserve air supply for air brake system
OwnerJohn M. Grahaminventor
Life of this patent
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Abstract
Air is supplied to an air brake supply tank on a wheeled vehicle by supplying air from an air compressor to a primary tank at an elevated pressure, fluidly coupling the primary tank to a supply tank, and reducing the pressure of the air supplied to the supply tank to a level suitable for use by the vehicle's air brakes.
Claims2
A method of supplying a higher pressure reserve air supply to a multi-chamber combination brake actuator comprising:
- connecting a multi-chamber combination brake actuator having a spring brake chamber and a service brake chamber to a pressurized air supply supplying pressurized air to said combination brake, through the steps of:
- connecting said multi-chamber combination brake actuator spring brake chamber to a first supply tank of pressurized air, with said spring brake chamber causing decreased braking force by said combination brake when pressurized air is supplied to said spring brake chamber;
- and,
- connecting said multi-chamber combination brake actuator service brake chamber to a second supply tank of pressurized air, with said service brake chamber providing increased braking force by said combination brake when pressurized air is supplied to said service brake chamber;
- connecting said first and second supply tanks together to form said pressurized air supply;
- and,
- reducing the pressure in said second supply tank relative to said first tank by connecting a pressure reducing valve between said first and second tanks.
4 more elements
Dependencies are inferred from the claim text.