Gear motor with fluid pressure groove and recess to facilitate s

Details Gear motor with fluid pressure groove and recess to facilitate s Gear motor with fluid pressure groove and recess to facilitate s

1980-06-10

1983-01-11

Vrablik, John J.

Rotary expansible chamber devices

Pressure fluid radially balances working or rotating...

Counterbalancing fluid directed to intertooth spaces or...

418 78, 418132, 418206, F01C 118, F01C 2112, F03C 208

Patent

active

043680135

ABSTRACT:
A rotary positive-displacement fluid-pressure motor which includes a casing, having an inlet port and an outlet port, at least two intermeshing rotors of toothed or lobed form housed for rotation in the casing, and means for conducting pressure fluid derived from the inlet port as far as a predetermined position in a face adjacent, and engaged by, a side of one of the rotors. A recess is so disposed in that face intermediate the predetermined position and the outlet port that, for facilitating starting of the motor when fluid under high pressure is directed into the inlet port, some of that fluid can gain access to the recess by way of said means and whichever intertooth or interlobe space of that rotor is so positioned as to place the means and the recess in communication.

REFERENCES:
patent: 2310078 (1943-02-01), Herman
patent: 2541010 (1951-02-01), Ungar
patent: 2626570 (1953-01-01), Armington et al.
patent: 3539282 (1970-11-01), Forschner
patent: 3748063 (1973-07-01), Putnam
patent: 3833319 (1974-09-01), Eglington
patent: 4087216 (1978-05-01), Shumate

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