F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 31/126 (2006.01) B60T 13/66 (2006.01) B60T 13/68 (2006.01) B60T 15/02 (2006.01) F16K 27/00 (2006.01) F16K 31/02 (2006.01) F16K 31/40 (2006.01)
Patent
CA 2241660
The invention provides an electrically activated valve assembly for control of a fluid. It has a diaphragm with a control chamber on one side and a flow barrier on the second side. Portions of a first flow passage and a second flow passage are on the second side of the diaphragm, with the flow barrier between them. When the control chamber has a relatively high pressure, the diaphragm is pressed against the flow barrier, isolating the first flow passage from the second flow passage. When the control chamber has a relatively low pressure, the diaphragm moves away from the flow barrier, so flow may occur between the first flow passage and the second flow passage. The position of the diaphragm is determined by pressure in the control chamber so the pressure in the control chamber controls the fluid flow connection between the first flow passage and the second flow passage. The valve also has an electrically activated valve responsive to an electrical signal to control pressure in a flow passageway to the control chamber so that when the electrically activated valve is energized, the control pressure is changed, so the electrically activated valve controls the fluid flow connection between the first flow passage and the second flow passage.
Macrae & Co.
Westinghouse Air Brake Company
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