Patent US4484038A successfully refreshed from Google Patents.
US4484038A
Expired / Lapsed
US
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Membrane touch panel having improved conductor construction
Assignee: DORMAN-BOGDONOFF CORP
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Filing: 1982-12-01
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Granted: 1984-11-20
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Expires: 2002-12-01
Abstract
Abstract A flexible membrane touch panel switch having contacts comprised of a first set of thin conductive metal film strips formed on a first layer, and of a second set of thin conductive metal film strips orthogonal to the first set and formed on a second layer, the second layer being spaced apart from and selectively movable into contact with the first layer, the panel further having silver conductive leads formed on each of the layers, each lead being integrally affixed at one end to, in electrical contact with, and extending from one of the strips for connection to external circuitry.
Inventors
- 👤 William E. Dorman
- 👤 Gary Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:25
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/78; H01H13/785; H01H13/702; H05; H05K; H05K1/00; H05K1/02; H05K1/09; H01H13/703; H01H2201/00; H01H2201/018; H01H2201/022; H01H2201/024; H01H2207/00; H01H2207/004; H01H2207/04; H01H2209/00; H01H2209/024; H01H2209/038; H01H2209/046; H01H2209/06; H01H2209/068; H01H2209/082; H01H2213/00; H01H2213/01; H01H2229/00; H01H2229/002; H01H2229/004; H01H2229/012; H01H2229/024; H01H2229/028; H01H2231/00; H01H2231/004; H05K1/03; H05K1/0393; H05K1/092; H05K1/095; H05K2201/00; H05K2201/03; H05K2201/0302; H05K2201/0317; H05K2201/0332; H05K2201/0388; H05K2201/0391
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
102 words
In a transparent flexible membrane touch panel having contacts comprised of a first set of thin conductive metal film strips formed on a first layer, and of a second set of thin conductive metal film strips orthogonal to said first set and formed on a second layer, said second layer being spaced apart from and selectively movable into contact with said first layer, the improvement comprising silver conductive leads formed on each of said layers, each lead being integrally affixed at one end to, in electrical contact with, and extending from a respective one of said strips for connection to external circuitry.
Claim 2
Dependent Claim
102 words
In a transparent flexible membrane touch panel having contacts comprised of a first set of thin conductive metal film strips formed on a first layer, and of a second set of thin conductive metal film strips orthogonal to said first set and formed on a second layer, said second layer being spaced apart from and selectively movable into contact with said first layer, the improvement comprising silver conductive leads formed on each of said layers, each lead being integrally affixed at one end to, in electrical contact with, and extending from a respective one of said strips for connection to external circuitry.
Claim 3
Dependent Claim
45 words
The panel of claim 1, wherein said silver conductive leads on said first layer terminate on an integral flexible tail extending from said first layer and said silver conductive leads on said second layer terminate on an integral flexible tail extending from said second layer.
Claim 4
Dependent Claim
10 words
The panel of claim 1, wherein said metal comprises gold.
Claim 5
Dependent Claim
10 words
The panel of claim 2, wherein said metal comprises gold.
Claim 6
Dependent Claim
25 words
The panel of claim 3, wherein the portions of said silver conductive leads in contact with said strips are printed directly onto said gold strips.
Claim 7
Dependent Claim
25 words
The panel of claim 4, wherein the portions of said silver conductive leads in contact with said strips are printed directly onto said gold strips.
Claim 8
Dependent Claim
43 words
The panel of claim 1, wherein the strips of each said set of film strips are rectangular, are substantially longer along one dimension than the other, and are closely spaced to the other strips in the set in parallel along their longer dimension.
Claim 9
Dependent Claim
43 words
The panel of claim 2, wherein the strips of each said set of film strips are rectangular, are substantially longer along one dimension than the other, and are closely spaced to the other strips in the set in parallel along their longer dimension.
Claim 10
Dependent Claim
61 words
The panel of claim 7, wherein each of the leads is affixed to, and in contact with, its respective strip at a head portion of said lead, the head portion being located substantially across the smaller dimension of the strip at one end along the longer dimension of the strip, the remaining portion of said lead extending from said head portion.
Claim 11
Dependent Claim
61 words
The panel of claim 8, wherein each of the leads is affixed to, and in contact with, its respective strip at a head portion of said lead, the head portion being located substantially across the smaller dimension of the strip at one end along the longer dimension of the strip, the remaining portion of said lead extending from said head portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |