Overvoltage protection with status signalling

Details Overvoltage protection with status signalling Overvoltage protection with status signalling

2006-07-24

2010-11-23

Vortman, Anatoly (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

C337S005000, C337S006000, C337S405000, C337S406000, C337S142000, C337S079000, C337S148000, C337S186000, C361S056000, C361S103000, C361S104000, C361S118000, C361S127000, C338S021000, C338S0220SD

Reexamination Certificate

active

07839257

ABSTRACT:
The present invention teaches an overvoltage protection device that includes at least one non-linear resistance element and a single cut-off device coupled with the at least one non-linear resistance element to disable the at least one non-linear resistance element when the at least one non-linear resistance element reaches a pre-determined temperature. The single cut-off device may include stranded wire, a first solder having a first melting point connecting the stranded wire to the at least one non-linear resistance element, and a second solder having a second melting point, higher than the first melting point, connecting the stranded wire to the at least one non-linear resistance element. The single cut-off device may further include a shifting part that shifts when the at least one non-linear resistance element heats the first solder to the first melting point. In other particular embodiments, the overvoltage protection device may further include a status indicator configured to be moved by the single cut-off device to indicate one of at least two conditions of the at least one non-linear resistance element. The status indicator may include a lever, and the single cut-off device moves the lever to indicate the one of at least two conditions of the at least one non-linear resistance element.

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PCT/IB2006/002154 International Search Report and Written Opinion Nov. 28, 2006.

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