Pump system for biasing seals of a centrifugal pump

Details Pump system for biasing seals of a centrifugal pump Pump system for biasing seals of a centrifugal pump

1994-12-15

1997-08-26

Thorpe, Timothy

Pumps

One fluid pumped by contact or entrainment with another

Liquid pumped by supplying or exhausting gaseous motive...

417122, 417123, 41742311, 277 3, 1372075, 91 4R, 415175, F04F 106

Patent

active

056605307

ABSTRACT:
Pumping under the present invention includes movement of material, in a first embodiment fluid and in a second embodiment a piston assembly, between first and second positions including detection of said material at each position. Control circuitry and supporting mechanical and fluid coupling responsive to material position toggles the pump into alternate modes of operation driving the material toward each point. The pump arrangement has fewer moving parts than traditional pumps and enjoys higher reliability for its simplified design.

REFERENCES:
patent: 3005417 (1961-10-01), Swaney
patent: 3100965 (1963-08-01), Blackburn
patent: 3452839 (1969-07-01), Swearingen
patent: 3722365 (1973-03-01), Olsson
patent: 4086765 (1978-05-01), Gillilan
patent: 4206928 (1980-06-01), Asano
patent: 5165699 (1992-11-01), Shrontz et al.
patent: 5242272 (1993-09-01), Ven et al.

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