Drain valve

Automatic temperature and humidity regulation – Thermostatic – In fluid controlled

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Details

236101R, 137204, F16K 1738

Patent

active

045708525

ABSTRACT:
A drain valve has a construction such that ascent and descent of a drain valve head for opening and closing a discharge port are effected by a combination of two coiled springs, one of which is made of a shape memory effect alloy. The drain valve head is supported so that it is capable of ascending and descending by an inside and outside dual structure of attachment of the two springs alone. Thus, it is made possible to simplify a drain valve construction and to miniaturize a drain valve per se.

REFERENCES:
patent: 2912166 (1959-11-01), Domnick
patent: 3237862 (1966-03-01), Salerno et al.
patent: 3664582 (1972-05-01), Jackson et al.
patent: 4325217 (1982-04-01), Golestaneh
patent: 4427149 (1984-01-01), Adachi

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