US5109202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conductive resin structure for connecting metal conductors
Assignee: Individual
•
Filing: 1989-07-20
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Granted: 1992-04-28
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Expires: 2009-07-20
Abstract
Abstract A structure for connecting metal conductors in an oil-leak detector having the conductors covered with porous polytetrafluoroethylene (PTFE) and the metal conductors connected by a band of carbon-filled porous PTFE. The conductors, the porous polytetrafluoroethylene and the band of porous polytetrafluoroethylene surrounded by a hydrocarbon-penetrable jacket.
Inventors
- 👤 Juji Akiba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:09
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/16; G01M3/165; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
Connected metal electrical conductors comprising: (a) at least two parallel metal electrical wire conductors each surrounded by a layer of electrically conducting resin comprising carbon-filled porous expanded polytetrafluoroethylene; (b) a band of electrically conducting resin comprising carbon-filled porous expanded polytetrafluoroethylene interconnecting said wire conductors and at least partially wrapping around and attaching to each said layer of conducting resin; and (c) a hydrocarbon-penetrable jacket surrounding said wire conductors, said conducting resin covering said conductors, and said conductive resin band.
Claim 2
Dependent Claim
79 words
Connected metal electrical conductors comprising: (a) at least two parallel metal electrical wire conductors each surrounded by a layer of electrically conducting resin comprising carbon-filled porous expanded polytetrafluoroethylene; (b) a band of electrically conducting resin comprising carbon-filled porous expanded polytetrafluoroethylene interconnecting said wire conductors and at least partially wrapping around and attaching to each said layer of conducting resin; and (c) a hydrocarbon-penetrable jacket surrounding said wire conductors, said conducting resin covering said conductors, and said conductive resin band.
Claim 3
Dependent Claim
13 words
A structure of claim 1, wherein said jacket comprises a porous hydrocarbon resin.
Claim 4
Dependent Claim
22 words
A structure of claim 2, wherein said porous hydrocarbon is selected from porous expanded polytetrafluoroethylene, porous polypropylene, porous polyethylene or porous rubber.
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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) | 1995-04-28 | 1995-10-28 | 1996-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-28 | 1999-10-28 | 2000-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-28 | 2003-10-28 | 2004-04-28 | $7700.00 | Window Closed / Lapsed |