Rotary expansible chamber devices – With supply or exhaust passage in working member
Patent
1984-11-01
1985-12-31
Smith, Leonard E.
Rotary expansible chamber devices
With supply or exhaust passage in working member
418191, 418189, F04C 2900
Patent
active
045618364
ABSTRACT:
A rotary piston machine, in order to avoid losses due to compressed flows, has adjacent to a generating and/or sealing contact edge (21, 22) at least one recess (11a, 11e) and/or opening (12a, 12b) which extends beyond the contact curve (14a-14c) in at least approximately the direction of motion of the surfaces moving in relation to each other during the stroke or passage of the piston (6a") through the shut-off driver. The spatial dimensions of the recesses and/or opening are such that the flow in it is not substantially accelerated even when the direction is changed. An opening (11g, 11g') can be closed insofar as it is located in a nonmoving ring (6b). To prevent low pressures between surfaces moving away from each other (9c, 14c) a pressure compensation space (11e) is connected to the contact line (14c) of one of the surfaces.
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patent: 4068988 (1978-01-01), Webb
Rotary Compressor Development, The Oil Engine, Mar. 1955, p. 418.
Obee Jane E.
Smith Leonard E.
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