Conductive pressure sensitive textile

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US007365031B2

(12) United States Patent ao) Patent No.: Us 7,365,031 B2

Swallow et al. (45) Date of Patent: Apr. 29,2008

(54) CONDUCTIVE PRESSURE SENSITIVE TEXTILE

(75) Inventors: Stanley Shigezo Swallow, Middlesex (GB); Asha Peta-Thomson, Middlesex (GB)

(73) Assignee: Intelligent Textiles Limited (GB)

( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 71 days.

(21) Appl. No.: 10/240,567

(22) PCT Filed: Apr. 2, 2001

(86) PCT No.: PCT/GB01/01518

§ 371 (c)(1),

(2), (4) Date: Oct. 2, 2002

(87) PCT Pub. No.: WO01/75778 PCT Pub. Date: Oct. 11, 2001

(65) Prior Publication Data

US 2003/0119391 Al Jun. 26, 2003

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Figure 1. Grid arrangement of elongated conductors

Applied Pressure, Pa

c) Maximum contact area d) Graph of applied pressure on a

between conductors crossover vesus area of contact

between the conductors, showing analogue switching region

Figure 2. Effects of applied pressure on a crossover between two conductors, cross sectional views and plotted relationship