Patent US4654475A successfully refreshed from Google Patents.
US4654475A
Expired / Lapsed
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Elastomeric electro-conductive devices
Assignee: University of Strathclyde
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Filing: 1986-01-22
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Granted: 1987-03-31
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Expires: 2006-01-22
Abstract
Abstract An elastomeric electro-conductive device 10 for human/animal joint movement monitoring comprises a silicone polymer non-conductive substrate 11 carrying an elastomeric electro-conductive member 12 formed from silicone polymer loaded with graphite carbon particles. Conductor means 14A,14B enable connection of the device 10 to an electrical network and comprise lengths 15 of conductive silicone rubber adhesively secured at one end to member 12 by a body 18 of elastomeric bonding material. The body 18 and the member 12 have the same electrical characteristics and may have identical constituents and formulations.
Inventors
- 👤 John Jackson
- 👤 Seyed A. Angadjivand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:01
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H05K1/092; H05K1/095
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
66 words
An elastomeric electro-conductive device comprising a silicone polymer elastomeric electro-conductive member and conductor means connected to said member for enabling interconnection of the device to an electrical network, wherein said conductor means comprises a length of high temperature vulcanised conductive rubber which is adhesively connected to said member by a body of bonding material being a silicone polymer having the same electrical characteristics as said member.
Claim 2
Dependent Claim
66 words
An elastomeric electro-conductive device comprising a silicone polymer elastomeric electro-conductive member and conductor means connected to said member for enabling interconnection of the device to an electrical network, wherein said conductor means comprises a length of high temperature vulcanised conductive rubber which is adhesively connected to said member by a body of bonding material being a silicone polymer having the same electrical characteristics as said member.
Claim 3
Dependent Claim
37 words
A device as claimed in claim 1, wherein the body of bonding material and the member incorporate the same constituents in identical proportions whereby the physical and electrical characteristics of the body and the member are identical.
Claim 4
Dependent Claim
42 words
A device as claimed in claim 2, wherein the body and the member each have a formulation of: 100 g silicone polymer gum 70 g graphite carbon particles 20 g Arachis oil 5 g Silester O.S. cross-linker 2 g DBTL curing agent.
Claim 5
Dependent Claim
27 words
A device as claimed in claim 1, wherein the length of HTV conductive rubber comprises a methyl vinyl polysiloxane polymer and curing agent loaded with carbon black.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |