Rotary expansible chamber devices – Working chamber surface expressed mathematically
Patent
1987-04-10
1989-04-18
Vrablik, John J.
Rotary expansible chamber devices
Working chamber surface expressed mathematically
418270, 173163, F01C 1344, F01C 1302, F01C 2112
Patent
active
048222640
ABSTRACT:
In reversible compressed air rotary motors for compressed air tools, particularly for wrenches, it is known to discharge the waste air radially from the casing of the motor, which results in a considerable nuisance, in particular as regards noise. Furthermore, due to the close positioning of the compressed air inlet and air outlet, poor efficiency is achieved. To avoid those drawbacks in a rotary sliding vane motor having an elliptical working chamber, the rotor end over on the inlet side is rotatably mounted, and air outlet means is arranged axially and lies in both the clockwise as well as in the antic-clockwise direction or rotation of the rotor relative to the major semi-axis of the elliptical working chamber. Thus by rotating the end cover to one or other of its limit positions, the outlet means communicate with different pairs of passageways.
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patent: 4344146 (1982-08-01), Leonard
Cooper Industries Inc.
Scott Eddie E.
Thiele Alan R.
Vrablik John J.
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