Device for opening a pipe and an application of said device

Details Device for opening a pipe and an application of said device Device for opening a pipe and an application of said device

1993-09-15

1995-05-23

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

236101D, G05D 2302

Patent

active

054173671

ABSTRACT:
Device for controlling the opening of a blanking off flap of a pipe, wherein the blanking off flap of the pipe is controlled in a first direction by a device using a spring made of a shape memory alloy as soon as the temperature rises and a return spring which activates the flap in a direction opposite the first direction as soon as the temperature drops.

REFERENCES:
patent: 3664582 (1972-05-01), Jackson et al.
patent: 4227646 (1980-10-01), Hart et al.
patent: 4523605 (1985-06-01), Ohkata
patent: 4778104 (1988-10-01), Fisher
patent: 4932429 (1990-06-01), Watanabe et al.

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