Motors: expansible chamber type – With motive fluid valve – Both inlet and exhaust controlled by motive fluid pressure...
Patent
1973-09-19
1976-05-25
Schwadron, Martin P.
Motors: expansible chamber type
With motive fluid valve
Both inlet and exhaust controlled by motive fluid pressure...
13762566, 137102, F16K 1100, G05D 1606
Patent
active
039584950
ABSTRACT:
An amplifying valve having an axially slidable valve spool to normally communicate a service port with a reservoir port, but which is movable to an operative position by a diaphragm type actuator activatable by air at substantially low but different selected pressures at the command of a pilot valve. In its operative position, the spool communicates the service port with a supply port for oil at high pressure. The pressure of oil at the service port is translated into a force on the spool to counteract that which is imposed thereon by the diaphragm actuator, so that service port pressure will always be substantially greater than but proportional to air pressure on the diaphragm.
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Koehring Company
Miller Robert J.
Nilles James E.
Schwadron Martin P.
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