Self-contained refrigerator open door indicator

Details Self-contained refrigerator open door indicator Self-contained refrigerator open door indicator

1985-02-26

1987-09-01

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

62131, 200 6162, 340563, 340585, 340658, G08B 1308

Patent

active

046911952

ABSTRACT:
A device for indicating that a refrigerator door is open, includes a housing which is mountable on a refrigerator in the vicinity of the refrigerator door during the use of the device. A transducer is mountable at the refrigerator door gasket for changing an electrical parameter in response to the movement of the refrigerator door from its closed position to an open position. Circuitry disposed in the housing senses the change in the electrical parameter of the transducer to produce an alarm after a preselected time delay.

REFERENCES:
patent: 3986183 (1976-10-01), Fujiwara
patent: 4074246 (1978-02-01), Conklin et al.
patent: 4241337 (1980-12-01), Prada
patent: 4463348 (1984-07-01), Sidebottom

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