Application and release magnet valve
AssigneeWestinghouse Air Brake Company
InventorsMichael V. Kazakis, Padmanab L. Gowda, Richard M. Hisker
Life of this patent
Estimating the term…
Abstract
An application and release magnet valve including an electropneumatic pilot valve portion for controlling a main air valve portion for supplying, maintaining, and releasing air pressure in the brake cylinders on a railway vehicle. The electropneumatic pilot valve portion includes an application solenoid which opens a first diaphragm actuated ball check valve in the main air valve portion to supply air from a supply port to a delivery port and includes a release solenoid which opens a second diaphragm actuated ball check valve to vent air from the delivery port to an exhaust port.
Claims19
An application and release magnet valve for supplying, maintaining, and releasing brake cylinder pressure comprising, a pneumatic portion and an electropneumatic portion, said pneumatic portion including a pair of check valves, each of said pair of check valves having a cartridge member and an elastomeric ball valve, said electropneumatic portion including a pair of solenoid-operated pilot valves, one of said pair of solenoid-operated pilot valves includes a first piston diaphragm chamber, said first piston diaphragm chamber is pressurized via a supply port to actuate a first plunger to open one of said pair of check valves to establish communication between said supply port and a delivery port, and the other of said pair of solenoid-operated pilot valves includes a second piston diaphragm chamber, said second piston diaphragm chamber is pressurized via said supply port to actuate a second plunger to open the other of said pair of check valves to establish communication between said delivery port and an exhaust port.
Dependencies are inferred from the claim text.