Rotary pump having a substantially triangular rotor

Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers

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F04C 222

Patent

active

061589926

ABSTRACT:
A rotary pump includes a substantially triangular rotor rotatably arranged in a housing and including vertexes which are in slide contact with a trochoid curved surface of the inner periphery of the housing. The housing and the rotor cooperate with each other to define a pair of suction working chambers and a pair of discharge working chambers. The housing is formed with a pair of suction ports to communicate with the pair of suction working chambers when the pump proceeds to the suction stroke, and with a pair of discharge ports to communicate with the pair of discharge working chambers when the pump proceeds to the compression stroke.

REFERENCES:
patent: 2342088 (1944-02-01), Rappl
patent: 3260247 (1966-07-01), Gassmann et al.
patent: 3671153 (1972-06-01), Luck
patent: 3966370 (1976-06-01), Huf
patent: 4278409 (1981-07-01), Eiermann
patent: 4410299 (1983-10-01), Shimoyama
patent: 4551073 (1985-11-01), Schwab

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