Ice detector with movable feeler

Details Ice detector with movable feeler Ice detector with movable feeler

1988-04-21

1989-10-10

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

G08B 1902

Patent

active

048735108

ABSTRACT:
An ice detector comprises a housing from which a feeler is adapted to be projected through an aperture--if ice does not cover the aperture the feeler moves freely to its projected position, but if ice does cover the aperture the feeler does not so move. The movement or non-movement of the feeler actuates an appropriate alarm. The feeler may be moved by an expansible chamber so mounted within a housing that expansion of the chamber when heated moves the feeler out of the housing when no ice is present, while when ice is present that expansion actuates the ice detector alarm.

REFERENCES:
patent: 2427778 (1947-09-01), Gregg
patent: 2494877 (1950-01-01), Idrac
patent: 2803813 (1957-08-01), Bullen et al.
patent: 3134563 (1964-05-01), Stuetzer
patent: 3540025 (1970-11-01), Levin et al.
patent: 4054255 (1977-10-01), Magenheim
patent: 4497181 (1985-02-01), Kocher et al.
patent: 4551982 (1985-11-01), Kocher et al.
patent: 4646068 (1987-02-01), Skala
patent: 4766369 (1988-08-01), Weinstein

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