Thermostat sensing tube with plastic spiral-cut insulator/protec

Details Thermostat sensing tube with plastic spiral-cut insulator/protec Thermostat sensing tube with plastic spiral-cut insulator/protec

1996-07-12

1997-12-02

Tapolcai, William E.

Refrigeration

Automatic control

Of external fluid or means

236 99R, 374208, F25D 1706, G05D 2312

Patent

active

056923880

ABSTRACT:
A thermostat assembly for a room air-conditioning unit includes a sensing tube and a thermoplastic protective tube extending over the sensing tube. The protective tube has a spiral-shaped gap which allows air flowing over the protective tube to directly contact the sensing tube so that the thermostat assembly accurately measures the temperature of the air. The protective tube protects the sensing tube from abrasion by sharp edges and insulates the sensing tube from contacting cold surfaces which could otherwise affect the performance of the thermostat assembly.

REFERENCES:
patent: 879474 (1908-02-01), Kessling
patent: 1633599 (1927-06-01), Moeller
patent: 1917457 (1933-07-01), Otto
patent: 2234056 (1941-03-01), Moore
patent: 2507911 (1950-05-01), Keller
patent: 2750483 (1956-06-01), Voorman, Jr.
patent: 3266318 (1966-08-01), Abajian et al.
patent: 4618268 (1986-10-01), Horner

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