Overload protective circuit breaker switch

Details Overload protective circuit breaker switch Overload protective circuit breaker switch

1997-04-28

1999-03-30

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337 60, 337 52, 337 70, H01H 7116

Patent

active

058894578

ABSTRACT:
An overload protective circuit breaker switch including: a first fixed contact and a second fixed contact adapted to connect an electric appliance to power supply; a movable contact adapted to form with the first fixed contact and the second fixed contact a normal open contact; an actuator controlled by the user to turn about an axis; a lever coupled to and turned with the actuator, the lever being turned about a first bearing point, when the overload protective circuit breaker switch is not at an overload status, to move the movable contact between a normal open contact position in which the movable contact form with the first fixed contact and the second fixed contact a normal open contact, and a normal close contact position in which the movable contact form with the first fixed contact and the second fixed contact a normal close contact; and a release mechanism adapted to move the lever, the release mechanism releasing the lever from the first bearing point to a second bearing point upon an overload, causing the lever to release the movable contact and to let the movable contact return to the normal open contact status.

REFERENCES:
patent: 4528538 (1985-07-01), Anderson
patent: 4833439 (1989-05-01), Bowden et al.
patent: 5223813 (1993-06-01), Camberleng et al.
patent: 5453725 (1995-09-01), You et al.
patent: 5539371 (1996-07-01), Yu
patent: 5694106 (1997-12-01), Wang

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