Multiple displacement pump system with bypass controlled by inle

Details Multiple displacement pump system with bypass controlled by inle Multiple displacement pump system with bypass controlled by inle

1978-02-15

1980-09-16

Vrablik, John J.

Pumps

Diverse pumps

Moving partition or cylinder of rotary pump forms or...

417286, 417309, 417310, F04B 2310, F04B 4900

Patent

active

042227127

ABSTRACT:
A multiple displacement pump system and method utilizing a single fixed displacement pump having pumping elements providing both first and second sets of pumping chambers. Circuit means having a fluid utilization conduit provides for delivery of fluid to said fluid utilization conduit which is either the sum of fluid delivered from both sets of pumping chambers or from only one set of pumping chambers. Additionally, the circuit means includes various alternate forms of control dependent upon pressure in a part of the system or on speed of a mechanism utilizing the pumped fluid to establish conditions wherein fluid delivered by the system is at either a desired flow rate or within a range of flow rates at different pressures.

REFERENCES:
patent: 2377556 (1945-06-01), Jeannin
patent: 2683418 (1954-07-01), Smith, Jr.
patent: 3081706 (1963-03-01), Drutchas et al.
patent: 3182596 (1965-05-01), Prijatel

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