US4057710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard assembly
Assignee: Individual
•
Filing: 1976-03-29
•
Granted: 1977-11-08
•
Expires: 1996-03-29
Abstract
Abstract A keyboard assembly comprising a plurality of actuating keys, and a sheet of flexible thin plastic film, the keys being bonded to the film. The keys have upper and lower portions, said lower portions being sandwiched between said upper portions and film and bonded to each.
Inventors
- 👤 Arthur S. Willmott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:00
CPC Classifications
G; G06; G06C; G06C7/00; G06C7/02; B; B29; B29C; B29C45/00; B29C45/16; B29C45/1671; H; H01; H01H; H01H13/00; H01H13/70; H01H13/702; H01H13/705; B29L; B29L2031/00; B29L2031/46; B29L2031/466; H01H2229/00; H01H2229/044; H01H2229/046; H01H2233/00; H01H2233/002; H01H2233/004; H01H2233/006
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
156 words
A method of making a keyboard assembly in which a sheet of thin flexible plastic film is bonded to a series of key portions arranged in a predetermined order, comprising the steps of molding a first series of key portions in a first mold, placing said first series of key portions into a second mold, introducing said film into said second mold, and then molding a second series of key portions underlying said first series of key portions to bond said film to said first key portions in said mold, said first series of key portions being provided with first runners extending between the key portions inwardly of said first series of key portions, and said second series of key portions being provided with runners outwardly of said second series of key portions, breaking away said first runners from said first series of key portions without breaking the bond between said film and said key portions.
Claim 2
Independent Claim
156 words
A method of making a keyboard assembly in which a sheet of thin flexible plastic film is bonded to a series of key portions arranged in a predetermined order, comprising the steps of molding a first series of key portions in a first mold, placing said first series of key portions into a second mold, introducing said film into said second mold, and then molding a second series of key portions underlying said first series of key portions to bond said film to said first key portions in said mold, said first series of key portions being provided with first runners extending between the key portions inwardly of said first series of key portions, and said second series of key portions being provided with runners outwardly of said second series of key portions, breaking away said first runners from said first series of key portions without breaking the bond between said film and said key portions.
Claim 3
Dependent Claim
37 words
A method according to claim 1, including the step of cutting said film and said runners outwardly of said series of key portions so that only said key portions and said film remain as a keyboard assembly.
References Cited (Backward Citations)
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US2510091A
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US3627927A
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US3693775A
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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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |