Over-current protection device

Details Over-current protection device Over-current protection device

2005-05-24

2005-05-24

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

C361S105000

Reexamination Certificate

active

06898063

ABSTRACT:
The over-current protection device of the present invention uses the unbalanced properties of the thermal expansion coefficients between the outer and inner sides for an upper metallic conductive sheet and a lower metallic conductive sheet to generate a torque to deform outwardly. The torque is used to pull a current-sensing element and present with at least a cracking face, so as to introduce an electrically open effect similar to a fuse. Thus, the present invention can achieve the object for preventing the danger of circuit system by the short circuit during the burning of over-current protection device.

REFERENCES:
patent: 5831510 (1998-11-01), Zhang et al.
patent: 5852397 (1998-12-01), Chan et al.
patent: 6211771 (2001-04-01), Zhang et al.

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