Automatic metering system

Details Automatic metering system Automatic metering system

1987-03-02

1988-09-06

Fisher, Richard V.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 94, 210 98, 210100, 210234, 210418, 73198, 137 681, 251 20, B01D 3500, G01F 1512, G01F 106

Patent

active

047691352

ABSTRACT:
A fluid metering device (10) is provided for automatically restricting (i.e., shutting off or reducing) fluid flow to a filter (16). The metering device (10) has a vane (32) which turns as fluid flows and thereby drives a gear (92). Once the vane (32) has rotated a selected number of times, as a result of the fluid flow, the rotation of the gear will break a frangible link (82), causing the fluid flow to stop or reduce by closing a valve (60). The customer will know to replace the filter (16) when the fluid no longer flows or is substantially reduced, and the customer will also have to replace the frangible link (82) to enable the fluid to flow at full volume again.

REFERENCES:
patent: 1808212 (1931-06-01), Earl
patent: 1936301 (1932-11-01), Hansen et al.
patent: 2367402 (1945-01-01), Kelly
patent: 2613683 (1952-10-01), Baird et al.
patent: 4437347 (1984-03-01), Bronsky et al.
patent: 4586569 (1986-05-01), Hyde
patent: 4611617 (1986-09-01), Hewitt
patent: 4681677 (1987-07-01), Kuh et al.

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