Electrical device having PTC conductive polymer

Details Electrical device having PTC conductive polymer Electrical device having PTC conductive polymer

2005-11-15

2005-11-15

Easthom, Karl D. (Department: 2832)

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

C338S0220SD

Reexamination Certificate

active

06965293

ABSTRACT:
An electrical device including a PTC conductive polymer sheet, and first and second electrodes physically contacted with opposite surfaces of the conductive polymer sheet is disclosed. The first and second electrodes have a plurality of protrusions protruded from surfaces thereof, respectively. The protrusions have an surface roughness (Rz) of 1 to 20 μm and an average width ({overscore (Rw)}) which is 0.5 to 2 times of the surface roughness (Rz), and an average gap ({overscore (Rg)}) between adjacent protrusions is 0.5 and 2 times of the surface roughness (Rz). The conductive polymer sheet has a thickness which is more than 5 times of the surface roughness (Rz).

REFERENCES:
patent: 4426633 (1984-01-01), Taylor
patent: 4689475 (1987-08-01), Kleiner et al.
patent: 4800253 (1989-01-01), Kleiner et al.
patent: 4857880 (1989-08-01), Au et al.
patent: 4907340 (1990-03-01), Fang et al.
patent: 5874885 (1999-02-01), Chandler
patent: 5955936 (1999-09-01), Shaw et al.
patent: 6157289 (2000-12-01), Kojima et al.
patent: 6188308 (2001-02-01), Kojima et al.
patent: 6522237 (2003-02-01), Ito et al.
patent: 6570483 (2003-05-01), Chandler et al.
patent: 0573945 (1997-10-01), None
patent: 2001-0090933 (2001-10-01), None

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