Thermal fuse using thermosensitive material

Details Thermal fuse using thermosensitive material Thermal fuse using thermosensitive material

2008-01-29

2008-01-29

Vortman, Anatoly (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With fusible, combustible or explosive material

C337S401000, C337S159000

Reexamination Certificate

active

07323965

ABSTRACT:
In the present invention, a physical and chemical property of thermosensitive material is noted in selecting and using thermosensitive material to provide a noble and improved thermal fuse using thermosensitive material. To achieve this object, the present thermal fuse includes: a thermosensitive material formed of thermoplastic resin fusing at a prescribed temperature; a cylindrical enclosure accommodating the thermosensitive material; a first lead member attached at one opening of the enclosure, forming a first electrode; a second lead member attached at the other opening of the enclosure, forming a second electrode; a movable conductive member accommodated in the enclosure and engaged with the thermosensitive material; and a spring member accommodated in the enclosure, and pressed against and thus acting on the movable conductive member. When the thermosensitive material fuses at an operating temperature an electrical circuit between the first and second electrodes is switched.

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U.S. Appl. No. 10/971,166, filed Oct. 22, 2004, Yoshikawa.
U.S. Appl. No. 11/229,489, filed Sep. 15, 2005, Yoshikawa et al.

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