Pumps – Expansible chamber type – Having separate noncyclic valve
Patent
1987-07-20
1988-05-17
Freeh, William L.
Pumps
Expansible chamber type
Having separate noncyclic valve
251228, F04B 4900, F04B 3144
Patent
active
047447346
ABSTRACT:
An air compressor having a pair of coacting rotors, useful as a supercharger for an engine, has a throttle plate in the compressed-air discharge port of its airend. The plate is carried by a shaft which is journalled in the airend housing. An air bypass channel is formed in the housing, The channel being in communication with the air-end air inlet. A pair of apertures formed in the housing open onto both the channel and the rotors, and flapper valves, pivotably mounted in the channel, monitor the apertures. Spring steel limbs, fixed to the throttle plate shaft engage and disengage the valves, to close and open the apertures, respectively, as the shaft is rotated to open and close the compressed-air discharge port, respectively again, by means of the throttle plate.
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Freeh William L.
Ingersoll-Rand Company
Murphy B. J.
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