Patent US1124133A successfully refreshed from Google Patents.
US3206701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistance key switch
Assignee: DH Baldwin Co
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Filing: 1962-10-29
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Granted: 1965-09-14
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Marion B Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:29
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/055; G10H1/0558
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN COMBINATION A METAL PLATE HAVING A PLURALITY OF ALIGNED SLITS ADAJCENT ONE EDGE THEREOF, GUIDE MEANS HAVING A SIMILAR PLURALITY OF ALIGNED SLITS SUPPORTED IN SPACED RELATIONSHIP FROM SAID PLATE, A PLURALTIY OF FLAT, PLUNGER-LIKE ELEMENTS OPERATING RESPECTIVELY IN THE SLITS OF SAID PLATE AND GUIDE MEANS, AT LEAST ONE DECK COMPRISING AN IN SULATIVE PANEL SUPPORTED IN SPACED RELATIONSHIP FROM SAID PLATE, WIRE ELEMENTS EACH HAVING MOUNTING MEANS ADJACENT ONE EDGE OF SAID DECK, A RESISTIVE ELEMENT COMPRISING A METAL BUS AND A COATING THEREON OF RESILIENT SUBSTANCE CONTAINING CONDUCTIVE MATERIAL, SAID BUS BEING SUPPORTED ON SAID DECK ADJACENT THE OTHER EDGE THEREOF, INSULATIVE FULCRUM MEANS ASSOCIATED ON SAID DECK AND LYING IN PARALLELISM TO SAID BUS, SAID WIRE ELEMENTS EXTENDING BEYOND THE LAST MENTIONED EDGE OF SAID DECK AND ENGAGING IN SLITS IN SAID PLUNGER-LIKE ELEMENTS.
Claim 2
Dependent Claim
139 words
IN COMBINATION A METAL PLATE HAVING A PLURALITY OF ALIGNED SLITS ADAJCENT ONE EDGE THEREOF, GUIDE MEANS HAVING A SIMILAR PLURALITY OF ALIGNED SLITS SUPPORTED IN SPACED RELATIONSHIP FROM SAID PLATE, A PLURALTIY OF FLAT, PLUNGER-LIKE ELEMENTS OPERATING RESPECTIVELY IN THE SLITS OF SAID PLATE AND GUIDE MEANS, AT LEAST ONE DECK COMPRISING AN IN SULATIVE PANEL SUPPORTED IN SPACED RELATIONSHIP FROM SAID PLATE, WIRE ELEMENTS EACH HAVING MOUNTING MEANS ADJACENT ONE EDGE OF SAID DECK, A RESISTIVE ELEMENT COMPRISING A METAL BUS AND A COATING THEREON OF RESILIENT SUBSTANCE CONTAINING CONDUCTIVE MATERIAL, SAID BUS BEING SUPPORTED ON SAID DECK ADJACENT THE OTHER EDGE THEREOF, INSULATIVE FULCRUM MEANS ASSOCIATED ON SAID DECK AND LYING IN PARALLELISM TO SAID BUS, SAID WIRE ELEMENTS EXTENDING BEYOND THE LAST MENTIONED EDGE OF SAID DECK AND ENGAGING IN SLITS IN SAID PLUNGER-LIKE ELEMENTS.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |