Spur gear with epi-cycloidal and hypo-cycloidal tooth shapes

Details Spur gear with epi-cycloidal and hypo-cycloidal tooth shapes Spur gear with epi-cycloidal and hypo-cycloidal tooth shapes

1990-11-01

1992-08-04

Bertsch, Richard A.

Rotary expansible chamber devices

Trapped fluid relief

With tooth modification

418206, 74462, 475180, F04C 214

Patent

active

051353733

ABSTRACT:
A spur pump gear system comprising; a housing have a sealed chamber communicating with an intake port and a discharge port; a shaft journalled for rotation within said chamber; a drive spur gear mounted concentrically on said shaft about a first axis within said chamber, said drive spur gear presenting epi and hypo cycloid tooth profiles; a driven spur gear disposed internally within said chamber for rotation about a second axis, said driven spur gear presenting epi and hypo cycloid tooth profiles; said epi hypo cycloid tooth profile of said drive spur gear engagedly driving said hypo cycloid tooth profile of said driven spur gear.

REFERENCES:
patent: 2778316 (1959-01-01), Haight et al.
patent: 3469531 (1969-09-01), Wood
patent: 3709055 (1973-01-01), Grove
patent: 3946621 (1976-03-01), Rouverol
patent: 4155686 (1979-05-01), Eisenmann et al.
patent: 4673342 (1987-06-01), Saegusa
patent: 4922781 (1990-05-01), Peiji

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