Crescent gear pump with hypo cycloidal and epi cycloidal tooth s

Details Crescent gear pump with hypo cycloidal and epi cycloidal tooth s Crescent gear pump with hypo cycloidal and epi cycloidal tooth s

1990-10-23

1992-11-17

Bertsch, Richard A.

Rotary expansible chamber devices

Moving cylinder

Rotating

74390, 74462, 29893, 418150, F16H 5506, F04C 106

Patent

active

051638266

ABSTRACT:
A crescent pump gear including: a housing having a chamber communicating with an intake port and a discharge port; a shaft journaled for rotation within said chamber; an externally toothed inner gear mounted centrally on said shaft about a first axis; an internally toothed annular gear eccentrically mounted for rotational engagement with said inner gear about a second axis; a crescent contacting a portion of said inner gear has a dual cycloidal tooth profile generated about a first generating circle and said outer gear has a dual cycloidal tooth profile generated about a second generating circle.

REFERENCES:
patent: 1516591 (1924-11-01), Edwards
patent: 2960884 (1960-11-01), Hill
patent: 3907465 (1975-09-01), Dorff et al.
patent: 3907470 (1975-09-01), Harle
patent: 3946621 (1976-03-01), Rouverol
patent: 3982445 (1976-09-01), Rouverol
patent: 4504202 (1985-03-01), Saegusa
patent: 4518332 (1985-05-01), Saegusa
patent: 4657492 (1987-04-01), Saegusa
patent: 4922781 (1990-05-01), Peiji

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