Over-current protection device

Details Over-current protection device Over-current protection device

2007-04-10

2007-04-10

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

C361S103000, C361S106000, C338S0220SD, C338S203000, C338S309000, C338S327000

Reexamination Certificate

active

10936290

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: 5204799 (1993-04-01), Stibila
patent: 5293297 (1994-03-01), Desai
patent: 5852397 (1998-12-01), Chan et al.
patent: 6211771 (2001-04-01), Zhang et al.

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