Patent US5527128A successfully refreshed from Google Patents.
Patent US4118102A successfully refreshed from Google Patents.
US4118102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isolated path coupling system
Assignee: Parker Intangibles LLC
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Filing: 1975-04-03
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Granted: 1978-10-03
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Expires: 1995-04-03
Abstract
Abstract A circuit board or sheet of homogeneous material having one or more circuit elements adhering to a surface thereof, said sheet providing a low through resistance path between each circuit element and opposed and aligned contacts positioned in surface contact with the opposite side of the sheet while providing a high isolation resistance between out of alignment contacts positioned on the opposite side of the sheet and between contacts positioned on the same side of the sheet positioned an isolation distance from said circuit elements. The circuit board with a circuit pattern is shown in various applications, such as keyboard or watch.
Inventors
- 👤 Charles H. Kuist
- 👤 Vincent Squitieri
- 👤 Richard E. Seeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:17
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/78; H01H13/785; H01R; H01R13/00; H01R13/02; H01R13/22; H01H13/702; H01H13/703; H01H2201/00; H01H2201/022; H01H2201/032; H01H2201/034; H01H2207/00; H01H2207/002; H01H2209/00; H01H2209/002; H01H2209/046; H01H2209/056; H01H2227/00; H01H2227/002; H01H2227/012; H01H2227/014; H01H2227/018; H01H2229/00; H01H2229/002; H01H2229/058
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A coupling system comprising a sheet of plastic material having top and bottom surfaces and having electrically conductive particles homogeneously dispersed therethrough, said sheet having means for providing at least when uncompressed a low electrical through resistance between opposite aligned points on said top and bottom surfaces and a plurality of spaced apart electrically conductive material elements supported by and adhered to and in surface electrical contact with the same surface of said sheet, said conductive elements being spaced apart on said surface of said sheet at least a distance apart equal to about the thickness of the sheet so that they are electrically isolated from each other by an isolation resistance greater than about 1000 ohms and in which the volume percent of conductive particles is between about 20 volume percent to 0.05 volume percent.
Claim 2
Dependent Claim
136 words
A coupling system comprising a sheet of plastic material having top and bottom surfaces and having electrically conductive particles homogeneously dispersed therethrough, said sheet having means for providing at least when uncompressed a low electrical through resistance between opposite aligned points on said top and bottom surfaces and a plurality of spaced apart electrically conductive material elements supported by and adhered to and in surface electrical contact with the same surface of said sheet, said conductive elements being spaced apart on said surface of said sheet at least a distance apart equal to about the thickness of the sheet so that they are electrically isolated from each other by an isolation resistance greater than about 1000 ohms and in which the volume percent of conductive particles is between about 20 volume percent to 0.05 volume percent.
Claim 3
Dependent Claim
132 words
A coupling system comprising a sheet of plastic material having top and bottom surfaces and having electrically conductive particles homogeneously dispersed therethrough, said sheet having means for providing at least when uncompressed a low electrical through resistance between opposite aligned points on said top and bottom surfaces and a plurality of spaced apart electrically conductive material elements supported by and adhered to and in surface electrical contact with the same surface of said sheet, said conductive elements being spaced apart on said surface of said sheet at least a distance apart equal to about the thickness of the sheet so that they are electrically isolated from each other by an isolation resistance greater than about 1000 ohms and in which the particles are metal and are between 9 to 18 volume percent.
Claim 4
Dependent Claim
132 words
A coupling system comprising a sheet of plastic material having top and bottom surfaces and having electrically conductive particles homogeneously dispersed therethrough, said sheet having means for providing at least when uncompressed a low electrical through resistance between opposite aligned points on said top and bottom surfaces and a plurality of spaced apart electrically conductive material elements supported by and adhered to and in surface electrical contact with the same surface of said sheet, said conductive elements being spaced apart on said surface of said sheet at least a distance apart equal to about the thickness of the sheet so that they are electrically isolated from each other by an isolation resistance greater than about 1000 ohms and in which the particles are metal and are between 9 to 18 volume percent.
Claim 5
Dependent Claim
137 words
A coupling system comprising a sheet of plastic material having top and bottom surfaces and having electrically conductive particles homogeneously dispersed therethrough, said sheet having means for providing at least when uncompressed a low electrical through resistance between opposite aligned points on said top and bottom surfaces and a plurality of spaced apart electrically conductive material elements supported by and adhered to and in surface electrical contact with the same surface of said sheet, said conductive elements being spaced apart on said surface of said sheet at least a distance apart equal to about the thickness of the sheet so that they are electrically isolated from each other by an isolation resistance greater than about 1000 ohms and in which the particles comprise metal covering an insulator core and the metal comprises 0.05 to 0.11 volume percent.
Claim 6
Dependent Claim
137 words
A coupling system comprising a sheet of plastic material having top and bottom surfaces and having electrically conductive particles homogeneously dispersed therethrough, said sheet having means for providing at least when uncompressed a low electrical through resistance between opposite aligned points on said top and bottom surfaces and a plurality of spaced apart electrically conductive material elements supported by and adhered to and in surface electrical contact with the same surface of said sheet, said conductive elements being spaced apart on said surface of said sheet at least a distance apart equal to about the thickness of the sheet so that they are electrically isolated from each other by an isolation resistance greater than about 1000 ohms and in which the particles comprise metal covering an insulator core and the metal comprises 0.05 to 0.11 volume percent.
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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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |