Mixing valve anti-scald apparatus

Details Mixing valve anti-scald apparatus Mixing valve anti-scald apparatus

1976-12-27

1978-05-16

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

251285, 251288, F16K 1108, F16K 512

Patent

active

040893472

ABSTRACT:
Anti-scald apparatus for inclusion on a water mixing valve of the type commonly used in showers. The apparatus permits normal manual operation of the valve from an off position, through intermediate positions that allow mixtures of various proportions of hot and cold water to pass through the valve and toward the maximum temperature hot water position. However, the valve cannot be adjusted to reach this maximum temperature position without the performance of a positive, manual procedure by the valve operator, thereby reducing the possibility of accidental or inadvertent scalding. Stop means carried by the valve operating handle and easily accessible to the valve operator cooperate with a fixed stop on the valve to preclude valve adjustment beyond a predetermined high temperature setting until the stop means manually are disengaged. The stop means automatically will be repositioned in an operative position when the valve is adjusted to cooler water temperature settings than the setting at which the stop means and fixed stop become engaged.

REFERENCES:
patent: 3011520 (1961-12-01), Barkelew
patent: 3397863 (1968-08-01), Bell
patent: 3674048 (1972-07-01), Manoogian

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