Refrigerator and freezer monitoring device

Details Refrigerator and freezer monitoring device Refrigerator and freezer monitoring device

1978-05-01

1979-10-02

Wayner, William E.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

165 11, 236 94, F25B 4900

Patent

active

041693574

ABSTRACT:
A temperature-sensitive switch in a refrigerator or freezer, separate from the refrigeration and freezer equipment, remains open when the temperature is below a predetermined level and closes when the temperature rises above the predetermined level. A visible alarm and an audible alarm are provided outside the refrigerator and freezer at a commercial power source wall-type outlet. A battery is electrically connected to the visible and audible alarms via the temperature-sensitive switch whereby when the temperature in the refrigerator or freezer rises above the predetermined level, the alarms are actuated.

REFERENCES:
patent: 2439331 (1948-04-01), Bean
patent: 2690550 (1954-09-01), Coonradt et al.
patent: 3100383 (1963-08-01), Christman
patent: 3105362 (1963-10-01), Gould
patent: 3260006 (1966-07-01), Johnson
patent: 3516860 (1970-05-01), Foster et al.

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