Micro-metering system

Details Micro-metering system Micro-metering system

1979-03-27

1981-06-09

Skaggs, H. Grant

Dispensing

With discharge assistant

With discharge volume varying means

13762525, 222333, 222335, 222137, G01F 1108

Patent

active

042719895

ABSTRACT:
A housing having an inlet port and an outlet port utilizes a variable volume cavity connected to the housing and includes a device for limiting the volume of the cavity which is alternately filled through the inlet port and exhausted through the outlet port using a spool valve. The spool valve is arranged to prevent continuous communication of fluid between the inlet and outlet ports. The volume of the variable volume cavity can be varied using electro-expansive or piezoelectric apparatus. The spool valve is reciprocated between the inlet and outlet ports using an electromechanical device and a motion amplifier.

REFERENCES:
patent: 2864535 (1958-12-01), Modes
patent: 3194448 (1965-07-01), Theall
patent: 3415277 (1968-12-01), Mitchell et al.
patent: 3465732 (1969-09-01), Kattchee
patent: 3524474 (1970-08-01), McCormick
patent: 3614486 (1971-10-01), Smiley

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