Patent US3191740A successfully refreshed from Google Patents.
US3191740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keylever signal storing mechanism
Assignee: Royal Mcbee Corp
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Filing: 1962-07-24
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Granted: 1965-06-29
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Expires: 1982-07-24
Abstract
No abstract record available.
Inventors
- 👤 Teddy F Smusz
- 👤 Edgar G Lizotte
- 👤 Thomas E Frechette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:53
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/08; B41J5/18; B41J5/22; B41J7/00; B41J7/36; B41J7/42; B41J7/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A TYPEWRITER, THE COMBINATION OF, A PIVOTABLE KEY BAR, AN INTERPOSER ADAPTED TO BE ENGAGED BY SAID KEY UPON DEPRESSION THEREOF AND MOVED THEREBY FROM NORMAL TO ACTIVE POSITION, A NORMALLY DISENGAGED CLUTCH, A CLUTCH ACTIVATOR OPERABLE TO EFFECT ENGAGEMENT OF SAID CLUTCH, A LATCH FOR TRAPPING SAID INTERPOSED IN ACTIVE POSITION, AND FOR OPERATING SAID ACTIVATOR, A PIVOTABLE SPACE BAR, A SECOND NORMALLY DISENGAGED CLUTCH, A SECOND CLUTCH ACTIVATOR ADAPTED TO BE ENGAGED BY SAID SPACE BAR UPON DEPRESSION THEREOF TO EFFECT ENGAGEMENT OF SAID SECOND CLUTCH, AND MEANS RESPONSIVE TO OPERATION OF SAID FIRST ACTIVATOR FOR DELAYING ENGAGEMENT OF SAID SECOND CLUTCH SIGNALLED BY SPACE BAR DEPRESSION FOR A PERIOD OF TIME AFTER DEPRESSION OF SAID SPACE BAR WHEREBY THE SPACE BAR SIGNAL IS STORED.
Claim 2
Dependent Claim
128 words
IN A TYPEWRITER, THE COMBINATION OF, A PIVOTABLE KEY BAR, AN INTERPOSER ADAPTED TO BE ENGAGED BY SAID KEY UPON DEPRESSION THEREOF AND MOVED THEREBY FROM NORMAL TO ACTIVE POSITION, A NORMALLY DISENGAGED CLUTCH, A CLUTCH ACTIVATOR OPERABLE TO EFFECT ENGAGEMENT OF SAID CLUTCH, A LATCH FOR TRAPPING SAID INTERPOSED IN ACTIVE POSITION, AND FOR OPERATING SAID ACTIVATOR, A PIVOTABLE SPACE BAR, A SECOND NORMALLY DISENGAGED CLUTCH, A SECOND CLUTCH ACTIVATOR ADAPTED TO BE ENGAGED BY SAID SPACE BAR UPON DEPRESSION THEREOF TO EFFECT ENGAGEMENT OF SAID SECOND CLUTCH, AND MEANS RESPONSIVE TO OPERATION OF SAID FIRST ACTIVATOR FOR DELAYING ENGAGEMENT OF SAID SECOND CLUTCH SIGNALLED BY SPACE BAR DEPRESSION FOR A PERIOD OF TIME AFTER DEPRESSION OF SAID SPACE BAR WHEREBY THE SPACE BAR SIGNAL IS STORED.
References Cited (Backward Citations)
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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) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |