Thrust piston pump for active substance dispenser

Details Thrust piston pump for active substance dispenser Thrust piston pump for active substance dispenser

1985-12-06

1988-02-23

Croyle, Carlton R.

Pumps

Expansible chamber type

Control by withdrawal or tilting of pump piston relative to...

222321, 222383, G01F 1102

Patent

active

047267470

ABSTRACT:
A thrust piston pump for an active substance dispenser has two equiaxial, position-rigid, interconnected pistons running in the same direction, namely a pump piston passing in and out of an otherwise closed pump chamber and a larger presuction pistion located downstream thereof, in whose associated pressure chamber is located the pump chamber end opened by the passing out of the pump piston. This leads to a very accurate dosing of the discharged active substance quantity, accompanied by a simple construction and high operational reliability.

REFERENCES:
patent: 2169209 (1939-08-01), Anderson
patent: 4010874 (1977-03-01), Steiman
patent: 4022354 (1977-05-01), Kotuby
patent: 4051983 (1977-10-01), Anderson
patent: 4277001 (1981-07-01), Nozawa
patent: 4371097 (1983-02-01), O'Neill
patent: 4511069 (1985-04-01), Kalat

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