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US 9,333,959 B2Granted
Brake cylinder maintaining valve
AssigneeWabtec Holding Corp.
InventorsEdward W. Gaughan, William John Potter
Life of this patent
Estimating the term…
Abstract
A system for maintaining brake cylinder pressure comprises a maintaining valve, a brake pipe, an emergency reservoir, and a brake cylinder configured to be in fluid communication with the brake pipe and the emergency reservoir. The brake pipe is configured to sustain a predetermined pressure within the brake cylinder during a brake application based on a differential between a pressure of the emergency reservoir and a pressure of the brake pipe.
Claims13
A system for maintaining brake cylinder pressure comprising:
- a maintaining valve;
- a brake pipe;
- an emergency reservoir;
- a brake cylinder configured to be in fluid communication with the brake pipe and the emergency reservoir;
- and
- a minimum application/release protection valve configured to prevent the flow of air from the brake pipe to the brake cylinder until a pressure within the brake cylinder has reached a first predetermined value,
- wherein the brake pipe is configured to sustain a second predetermined pressure within the brake cylinder during a brake application based on a differential between a pressure of the emergency reservoir and a pressure of the brake pipe, and wherein the minimum application/release protection valve is configured to prevent the flow of air from the brake pipe to the brake cylinder from the maintaining valve during a release of a service brake application.
4 more elements
Dependencies are inferred from the claim text.