Rotary expansible chamber devices – With plural working fluid inlet or outlet passages
Patent
1975-01-20
1976-06-22
Vrablik, John J.
Rotary expansible chamber devices
With plural working fluid inlet or outlet passages
418 61B, F01C 102, F03C 300, F04C 102
Patent
active
039648427
ABSTRACT:
A hydraulic device of the type in which an internally toothed first gear and an externally toothed second gear eccentrically located within said first gear are supported for relative rotary and orbital movement. The gear teeth of the first and second gears define pockets or chambers which expand from a minimum volume to a maximum and again contract to said minimum volume upon relative rotational and orbital movement thereof. A commutation valve arrangement in synchronism with said relative rotary and orbital movement connects the expanding pockets with one side of a fluid pressure system and connects the contracting pockets with the other side of the fluid pressure system. The commutation valve arrangement directs fluid to and from said pockets from one axial side thereof, and an additional valve arrangement is provided for directing fluid into the pockets from the other axial side thereof, the additional valve arrangement being responsive to the fluid pressure in the pockets.
REFERENCES:
patent: 3286645 (1966-11-01), Albers
patent: 3627454 (1971-12-01), Goff et al.
patent: 3671154 (1972-06-01), Kolbe et al.
patent: 3873248 (1975-03-01), Johnson
patent: 3910733 (1975-10-01), Grove
Russian Engineeering Journal, Issue 5, 1965.
TRW Inc.
Vrablik John J.
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