US3592979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric keyboard with improved printed circuit contact means
Assignee: NCR Voyix Corp
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Filing: 1969-11-05
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Granted: 1971-07-13
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Expires: 1989-11-05
Abstract
Abstract A signal-actuating device having its major component parts molded as a single piece. The actuating device includes a single body composed of an elastomeric material which is a glycol cured isocyanate terminated polyester formulated to be virtually a true gel, character symbols bonded on the body representing key positions and Mylar circuitry strips of etched copper wires bonded to raised projections located on the underside of the body. Contact made by depressing a key gives a binary-coded output, as well as providing a signal for activating distant devices.
Inventors
- 👤 Samuel A Redman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:01
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/78; H01H13/785; G; G06; G06C; G06C7/00; G06C7/02; H01H13/702; H04; H04L; H04L13/00; H04L13/16; H01H2201/00; H01H2201/022; H01H2201/026; H01H2201/032; H01H2203/00; H01H2203/028; H01H2209/00; H01H2209/002; H01H2209/006; H01H2209/068; H01H2209/08; H01H2219/00; H01H2219/028; H01H2229/00; H01H2229/044; H01H2229/058; H01H2239/00; H01H2239/02; H01H2239/026
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
The keyboard device of claim 1 in which said protrusions constitute a cylindrical body.
Claim 2
Dependent Claim
38 words
The keyboard device of claim 2 in which formed wall portions constitute said grid portions within which the cylindrical body is centered, whereby depression on the deformable body adjacent a cylindrical body will not affect adjacent cylindrical bodies.
Claim 3
Dependent Claim
175 words
A keyboard device including a. deformable body composed of an elastomeric material with a smooth upper surface having a plurality of indicia thereon and a lower surface formed in a grid pattern with hills and valleys and a raised portion located within each grid, each of said raised portions being orientated opposite one of said indicia; b. a first strip of insulating material bonded to the lower surface of each of said raised portions, said strip containing a plurality of selectively positioned apertures and a plurality of conductive contact elements embedded therein, said contact elements having portions located within said apertures; c. and a second strip of insulating material having the same construction as said first strip, said second strip being positioned adjacent said raised portions and orientated at right angles to said first strip, whereby, upon depression of an indicia-orientated portion of said deformable body, selective portions of conductive contact elements in said first and second strips will be brought into contact with each other by the raised portion orientated with the depressed indicia.
Claim 4
Dependent Claim
15 words
The keyboard device of claim 4 in which said raised portion comprises a cylindrical body.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |