Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Patent
1997-02-28
1999-01-26
Luebke, Renee S.
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
296101, 29612, 338312, 338313, 338203, H01C 710
Patent
active
058642811
ABSTRACT:
Electrical devices, particularly circuit protection devices, contain conductive polymer elements whose edges are formed by breaking the conductive polymer element, along a desired path, without the introduction of any solid body into the element. The resulting cohesive failure of the conductive polymer produces a distinctive fractured surface. One method of preparing such devices involves etching fracture channels in the electrodes of a plaque containing a PTC conductive polymer element sandwiched between metal foil electrodes, and then snapping the plaque along the fracture channels to form individual devices.
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Beadling William Cardwell
Thompson Mark S.
Toth James
Zhang Michael
Burkard Herbert G.
Easthom Karl
Gerster Marguerite E.
Luebke Renee S.
Raychem Corporation
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