Rotary positive-displacement pump

Details Rotary positive-displacement pump Rotary positive-displacement pump

1979-01-17

1980-10-21

Coe, Philip R.

Pumps

With condition responsive pumped fluid control

Bypass or relief valve controls venting by movable pump...

417310, 418 23, F04B 4900

Patent

active

042291470

ABSTRACT:
A rotary positive-displacement pump in which the vane or vanes separating the chambers are locked in the inner dead center point after a certain outlet pressure has been attained, in order to shut off the pump. A corresponding locking apparatus has a detent which assures that each vane is locked in a form-locking manner in the position which shuts off the pumping action. Preferably, the locking apparatus has an overstroke step by means of which it is assured that each vane is constantly held at an increased distance from its sliding surface so that friction and impact noises are positively avoided.

REFERENCES:
patent: 4050263 (1977-09-01), Adalbert et al.

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