Liquid supply apparatus

Details Liquid supply apparatus Liquid supply apparatus

1993-04-15

1995-05-02

Walton, George L.

Fluid handling

Liquid level responsive or maintaining systems

Electrical characteristic sensing

7386141, 1374875, 250574, 250576, 250577, 604253, A61M 5172, F16K 3102

Patent

active

054110521

ABSTRACT:
Liquid supply apparatus is disclosed for controlling the supply of liquid to humidifier apparatus. The liquid supply apparatus has a chamber with an inlet through which a liquid such as water is supplied to the chamber. The chamber has a flow detector to detect liquid entering the chamber and a level detector near the base of the chamber in a narrow portion of the chamber which, in conjunction with a calibrated orifice at the chamber outlet, provides an indication of the rate of liquid flow from the chamber. Control of supply of liquid is performed by a magnetically activated valve member.

REFERENCES:
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patent: 3890968 (1975-06-01), Pierce et al.
patent: 4261388 (1981-04-01), Shelton
patent: 4474206 (1984-10-01), Cannon
patent: 4509943 (1985-04-01), Hanzawa
patent: 4635281 (1987-01-01), Jones
patent: 4708831 (1987-11-01), Elsworth et al.
patent: 4718896 (1988-01-01), Arndt et al.
patent: 4820281 (1989-04-01), Lawler
patent: 4827766 (1989-05-01), Nelson

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