Trip-free resetting mechanism for an on-off unit

Details Trip-free resetting mechanism for an on-off unit Trip-free resetting mechanism for an on-off unit

1987-01-12

1989-06-20

Broome, H.

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

Expansible or vaporizable fluid actuated

200 83Z, 337130, H01H 3738

Patent

active

048412716

ABSTRACT:
A trip-free mechanism for resetting an on-off unit, such as a thermostat (1), breakable by the tripping of an actuator element (3) from a first condition to a second condition comprises a resetting button (9) engageable to apply a resetting force to the actuator element (3) to reset the latter in its first condition, and a restraining lever (10) acted upon by the resetting button (9) when it applies the resetting force to the actuator element (3) to maintain the unit in its broken condition until the button (9) is disengaged upon resetting of the actuator element.

REFERENCES:
patent: 3081388 (1963-03-01), Cox
patent: 3781744 (1973-12-01), Olson
patent: 3924213 (1975-12-01), Semple
patent: 4039991 (1977-08-01), Bucheister
patent: 4480246 (1984-10-01), Schmitt

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