Trapped volume vent means with restricted flow passages for mesh

Details Trapped volume vent means with restricted flow passages for mesh Trapped volume vent means with restricted flow passages for mesh

1991-06-19

1992-06-02

Bertsch, Richard A.

Rotary expansible chamber devices

Trapped fluid relief

4182011, 418206, F04C 1816, F04C 2900

Patent

active

051182688

ABSTRACT:
A rotary positive displacement blower (10) of the Roots-type having inlet and outlet vents recess (60,62) for reducing fluid pressure build up in spaces between meshing, helical lobes (34a, 36a) on rotating rotors of the blower.

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patent: 4768934 (1988-09-01), Soeters, Jr.
patent: 4828467 (1989-05-01), Brown
patent: 4844044 (1989-07-01), McGovern

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