Device for controlling the temperature and protecting against ex

Details Device for controlling the temperature and protecting against ex Device for controlling the temperature and protecting against ex

1975-02-04

1976-11-30

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With fusible, combustible or explosive material

317 40A, 337404, H01H 3776

Patent

active

039952460

ABSTRACT:
A device for controlling the temperature and protecting against excessive flow of current of electric installations, said device being provided with a mechanical switch which opens itself at a definite previously selected temperature, said mechanical switch comprising cylindrical housing wherein two elastic contact means are provided, one of the contact means comprising an open spring spiral torsion with bent ends which is provided around a melting body of thermally softenable material and is pressed with a tension directly against the spring action of the other contact means.

REFERENCES:
patent: 481989 (1892-09-01), Wilson
patent: 501653 (1893-07-01), Havard
patent: 643179 (1900-02-01), Woodman
patent: 791882 (1905-06-01), Cornelison
patent: 2548491 (1951-04-01), Peek, Jr.
patent: 3602864 (1971-08-01), Burney

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