Compositions – Electrically conductive or emissive compositions – Elemental carbon containing
Patent
1986-07-03
1988-08-23
Barr, Josephine
Compositions
Electrically conductive or emissive compositions
Elemental carbon containing
252502, 252503, 252504, 252506, 252507, 252508, 252509, 524495, 524496, 524440, 524451, 524445, 524413, 524401, 524425, 524430, 524493, H01B 106
Patent
active
047659300
ABSTRACT:
A pressure-responsive variable electrical resistive rubber material including at least one inorganic filler selected from a group consisting of conductive carbon black, short fibers of nonmetallic inorganic material, powder, and whiskers. The filler is dispersed in a matrix formed of an electrically insulative rubber. The rubber material exhibits a gradually reducing resistance value as a gradually increased pressing force is applied thereto. The rubber material provides a wide range of relationship between the applied force and the electrical resistance thereof. The rubber material is adapted for use as a pressure sensor having excellent fatigue creep resistance.
REFERENCES:
patent: 3875434 (1975-04-01), Harden et al.
patent: 4145317 (1979-03-01), Sado et al.
patent: 4292261 (1981-09-01), Kotani et al.
patent: 4302361 (1981-11-01), Kotani et al.
patent: 4495236 (1985-01-01), Obara et al.
Abstract--Japanese Patents Gazette, vol. 80, No. 24, Jul. 11, 1980, section CH-A85, ref. No. 80-42 324C/24 JP-A-55 58 504.
Chemical Abstracts, vol. 88, No. 20, May 15, 1978, p. 603 ref. No. 145162f; Columbus, Ohio--JP-A-52 139 989 (Inoue--Japan).
Kakiuchi Hajime
Mashimo Satoshi
Nagayasu Susumu
Nakajima Masayoshi
Noguchi Toru
Barr Josephine
Mitsuboshi Belting Ltd.
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