US3348648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard providing serial generation of two different codes responsive to one key depression
Assignee: Royal Typewriter Co Inc
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Filing: 1966-08-08
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Granted: 1967-10-24
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Expires: 1986-08-08
Abstract
No abstract record available.
Inventors
- 👤 Kenneth R Frechette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:14
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A CODE GENERATING KEYBOARD COMPRISING, A FRAME, A KEYLEVER AND AN INTERPOSER FULCRUM ROD SUPPORTED BY SAID FRAME, A PLURALITY OF KEYLEVERS PIVOTALLY SUPPORTED BY SAID KEYLEVER FULCRUM ROD, AN INTERPOSER BENEATH EACH OF SAID KEYLEVERS ROCKABLY SUPPORTED BY SAID INTERPOSER FULCRUM ROD AND POWER TRRANSLATABLE RELATIVE THERETO, SAID INTERPOSERS BEING ROCKABLE FROM A RESTORED TO AN ACTIVE POSITION IN RESPONSE TO DEPRESSION OF ITS ASSOCIATED KEYLEVER THROUGH A NORMAL DISTANCE, A SPRING FOR RESTORING EACH OF SAID INTERPOSERS AFTERA TRANSLATORY MOVEMENT THEREOF, A CYCLICALLY OPERABLE SHAFT FOR POWER TRANSLATING A ROCKED INTERPOSER TO GENERATE A REPRESENTATIVE CODE, MEANS FOR PREVENTING THE ROCKING OF A SECOND INTERPOSER UNTIL A FIRST ROCKED INTERPOSER HAS BEEN TRANSLATED BY SAID SHAFT, MEANS FOR LATCHING A ROCKED INTERPOSER AND FOR RELEASING A SAID ROCKED INTERPOSER AS ITS IS TRANSLATED THERENY PERMITTING ANOTHER INTERPOSER TO BE ROCKED,
Claim 2
Dependent Claim
142 words
A CODE GENERATING KEYBOARD COMPRISING, A FRAME, A KEYLEVER AND AN INTERPOSER FULCRUM ROD SUPPORTED BY SAID FRAME, A PLURALITY OF KEYLEVERS PIVOTALLY SUPPORTED BY SAID KEYLEVER FULCRUM ROD, AN INTERPOSER BENEATH EACH OF SAID KEYLEVERS ROCKABLY SUPPORTED BY SAID INTERPOSER FULCRUM ROD AND POWER TRRANSLATABLE RELATIVE THERETO, SAID INTERPOSERS BEING ROCKABLE FROM A RESTORED TO AN ACTIVE POSITION IN RESPONSE TO DEPRESSION OF ITS ASSOCIATED KEYLEVER THROUGH A NORMAL DISTANCE, A SPRING FOR RESTORING EACH OF SAID INTERPOSERS AFTERA TRANSLATORY MOVEMENT THEREOF, A CYCLICALLY OPERABLE SHAFT FOR POWER TRANSLATING A ROCKED INTERPOSER TO GENERATE A REPRESENTATIVE CODE, MEANS FOR PREVENTING THE ROCKING OF A SECOND INTERPOSER UNTIL A FIRST ROCKED INTERPOSER HAS BEEN TRANSLATED BY SAID SHAFT, MEANS FOR LATCHING A ROCKED INTERPOSER AND FOR RELEASING A SAID ROCKED INTERPOSER AS ITS IS TRANSLATED THERENY PERMITTING ANOTHER INTERPOSER TO BE ROCKED,
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |