Appliance door position sensor arrangement

Details Appliance door position sensor arrangement Appliance door position sensor arrangement

1979-03-29

1980-12-23

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

62131, 200 6119, 335206, G08B 1308

Patent

active

042413370

ABSTRACT:
A magnet and one or more magnetic field responsive switches, preferably Hall effect sensors, are respectively mounted in alignment on opposing edges of a two door refrigerator in one preferred embodiment. Movement out of alignment of either the magnet or switch generates a door ajar signal to activate visual and/or audio alarms. Embodiments employing mono-polar and bipolar Hall effect sensors are shown. A single door embodiment is shown with the magnet held in a fixed position opposite the sensor mounted on the door edge.

REFERENCES:
patent: 2877361 (1959-03-01), Chase
patent: 2957320 (1960-10-01), Armentrout
patent: 3199630 (1965-08-01), Engel et al.
patent: 3426166 (1969-02-01), Canceill
patent: 3539741 (1970-11-01), Voland
patent: 3627959 (1971-12-01), Chapell

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