Trochoidal pump

Details Trochoidal pump Trochoidal pump

2006-05-30

2006-05-30

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Moving cylinder

Rotating

C418S109000, C418S190000

Reexamination Certificate

active

07052258

ABSTRACT:
To reduce noise caused by pulsation generated when fluid is expelled, in a trochoidal pump comprising an inner rotor and outer rotor having trochoidal toothed shapes.[Means of Solution] The inner rotor5and outer rotor6having trochoidal toothed shapes are set in such a manner that when they are in a mutually intermeshing state, a tip clearance d0is created between the respective tooth crests5aof the inner rotor5and the outer rotor6. In at least one position of this group of tip clearances d0, a large clearance d1forming a large interval is provided.

REFERENCES:
patent: 4976595 (1990-12-01), Taniguchi
patent: 5554020 (1996-09-01), Rao et al.
patent: 20406 (1929-05-01), None
patent: 99950 (1984-02-01), None
patent: 61210282 (1966-09-01), None
patent: 64-56589 (1989-04-01), None
patent: 2-95787 (1990-04-01), None
patent: 02095788 (1990-04-01), None

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