High aspect ratio, remote controlled pumping assembly

Details High aspect ratio, remote controlled pumping assembly High aspect ratio, remote controlled pumping assembly

1993-07-21

1995-11-14

Bertsch, Richard A.

Pumps

Successive stages

Reciprocating rigid stages

92136, 4174101, F04B 2500, F01B 904

Patent

active

054661285

ABSTRACT:
A miniature dual syringe-type pump assembly which has a high aspect ratio and which is remotely controlled, for use such as in a small diameter penetrometer cone or well packer used in water contamination applications. The pump assembly may be used to supply and remove a reagent to a water contamination sensor, for example, and includes a motor, gearhead and motor encoder assembly for turning a drive screw for an actuator which provides pushing on one syringe and pulling on the other syringe for injecting new reagent and withdrawing used reagent from an associated sensor.

REFERENCES:
patent: 465099 (1891-12-01), Rice
patent: 1308089 (1919-07-01), Mardis et al.
patent: 1549332 (1925-08-01), Roberts
patent: 1841629 (1932-01-01), Pigeolet
patent: 2016727 (1935-10-01), Roth
patent: 3080852 (1963-03-01), Geyer
patent: 3653789 (1972-04-01), Maroth
patent: 3824905 (1974-07-01), Jablonsky
patent: 3990815 (1976-11-01), De Vial
patent: 4300641 (1981-11-01), Kinkel
patent: 4790234 (1988-12-01), Hampejs et al.

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