Pulse tuned optimized positive displacement porting

Details Pulse tuned optimized positive displacement porting Pulse tuned optimized positive displacement porting

1990-11-13

1992-03-17

Bertsch, Richard A.

Rotary expansible chamber devices

Moving cylinder

Rotating

418180, F04C 210

Patent

active

050963988

ABSTRACT:
This invention relates to a porting system for a hydraulic device comprising a housing having a chamber communicating with an intake port and an exhaust port; a pair of rotary gears disposed internally of said chamber adjacent said ports and defining expanding and contracting pockets as said gears rotate over said intake and exhaust ports; said ports having a cross-sectional area in the direction perpendicular to the rotation which varies in relation to the rate of change of the expanding and contracting pockets.

REFERENCES:
patent: 3995978 (1976-12-01), Kahn et al.
patent: 4658583 (1987-04-01), Shropshire
patent: 4767296 (1988-08-01), Satomoto et al.

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