Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Patent
1981-04-15
1983-10-25
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
418 75, 418 79, F04C 2113, F04C 1500
Patent
active
044116071
ABSTRACT:
A hydraulic internal gear machine includes a positive displacement unit for working liquid constituted by a rotary outer gear and an inner gear surrounding the outer gear and being in mesh therewith at one point to define a plurality of increasing liquid displacement chambers. The chambers are laterally bounded by a rotary disc which cooperates with a stationary control plate. The disc and the control plates are formed respectively with flow control openings for admitting pressure liquid into a half of the chambers and for discharging the liquid from the other half of the number of chambers. To compensate for the tilting moment acting on the rotary disc, the interface between the rotary disc and the control chamber is provided with arcuate recessed sections communicating with the openings in the rotary disc to apply pressurized liquid in the displacement chambers against both sides of the rotary disc.
REFERENCES:
patent: 3289542 (1966-12-01), Fikse
patent: 3597128 (1971-08-01), Venable et al.
patent: 3895888 (1975-07-01), Roberts
Schneider Johann
Wusthof Peter
G. L. Rexroth GmbH
Striker Michael J.
Vrablik John J.
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