Rotary expansible chamber devices – With mechanical sealing – Axially movable end wall or end wall portion
Patent
1991-10-08
1993-04-13
Bertsch, Richard A.
Rotary expansible chamber devices
With mechanical sealing
Axially movable end wall or end wall portion
418181, F04C 2344, F04C 1500
Patent
active
052018784
ABSTRACT:
A vane pump includes a pump housing formed with a cylindrical inner space, intake ports and exhaust ports, a rotating shaft rotatably supported by the pump housing, a rotor received in the cylindrical inner space to be rotated by the rotating shaft, a cam ring disposed in the cylindrical inner space, a plurality of vanes held by the rotor to define plural pump chambers between the rotor and cam ring. Fluid sucked from the intake ports is pressurized and discharged to the exhaust ports. The vane pump is further provided with first and second pressure chambers and a throttle passage connecting the first and second pressure chambers. Pressurized fluid discharged from one of the exhaust ports is led to one of the two pressure chambers and pressurized fluid discharged form the other of the exhaust ports is led to the other of the pressure chambers while pressurized fluid is taken out from the second pressure chamber to be supplied to a fluid device.
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Patent Abstracts of Japan, vol. 8, No. 177, (M-317) (1614), Aug. 15, 1984, & JP-A-59-68590, Apr. 18, 1984, M. Sudou, et al., "Muffler of Rotary Compressor".
Abe Ryutaro
Kitamura Michihiro
Takeuchi Yoshiyuki
Bertsch Richard A.
Toyoda Koki Kabushiki Kaisha
Wicker W. J.
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