US3217850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forward and back spacing mechanism
Assignee: Royal Typewriter Co Inc
•
Filing: 1963-11-21
•
Granted: 1965-11-16
•
Expires: 1983-11-21
Abstract
No abstract record available.
Inventors
- 👤 Leo P Frechette
- 👤 Harold D Gaudet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:11
CPC Classifications
B; B41; B41J; B41J25/00; B41J25/02; B41J25/04; B41J25/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AN ACTION FOR CONTROLLING THE FORWARD SPACING AND BACKSPACING MECHANISM OF AN ELECTRIC TYPEWRITER, IN COMBINATION, FORWARD SPACING AND BACKSPACING MECHANISM ACTUATING LINKS, A CROSS SHAFT, SPACE BAR AND BACKSPACE LEVERS PIVOTALLY MOUNTED ON SAID SHAFT, A SECOND CROSS SHAFT, A SINGLE POWER ARM PIVOTALLY MOUNTED ON SAID SECOND SHAFT OPERABLE TO DRIVE AN ACTUATING LINK SELECTIVELY OPERATIVELY CONNECTED THERETO, A POWER SHAFT, A DRIVE CAM FREELY MOUNTED ON SAID POWER SHAFT, CLUTCH MEANS ENGAGEABLE TO CONNECT SAID CAM TO SAID POWER SHAFT WHEREBY SAID CAM IS DRIVEN, SAID POWER ARM BEING POSITIONED TO BE ENGAGED AND DRIVEN BY SAID CAM WHEN THE LATTER IS DRIVEN, A MEMBER OPERABLE TO EFFECT ENGAGEMENT OF SAID CLUTCH, AND MEANS ASSOCIATED WITH SAID SPACE BAR AND BACK SPACE LEVERS TO SELECTIVELY CONNECT ASSOCIATED ACTUATING LINKS TO SAID POWER ARM AND TO OPERATE SAID MEMBER WHEN EITHER THE SPACE BAR OR BACKSPACE LEVER IS MANIPULATED.
Claim 2
Dependent Claim
151 words
AN ACTION FOR CONTROLLING THE FORWARD SPACING AND BACKSPACING MECHANISM OF AN ELECTRIC TYPEWRITER, IN COMBINATION, FORWARD SPACING AND BACKSPACING MECHANISM ACTUATING LINKS, A CROSS SHAFT, SPACE BAR AND BACKSPACE LEVERS PIVOTALLY MOUNTED ON SAID SHAFT, A SECOND CROSS SHAFT, A SINGLE POWER ARM PIVOTALLY MOUNTED ON SAID SECOND SHAFT OPERABLE TO DRIVE AN ACTUATING LINK SELECTIVELY OPERATIVELY CONNECTED THERETO, A POWER SHAFT, A DRIVE CAM FREELY MOUNTED ON SAID POWER SHAFT, CLUTCH MEANS ENGAGEABLE TO CONNECT SAID CAM TO SAID POWER SHAFT WHEREBY SAID CAM IS DRIVEN, SAID POWER ARM BEING POSITIONED TO BE ENGAGED AND DRIVEN BY SAID CAM WHEN THE LATTER IS DRIVEN, A MEMBER OPERABLE TO EFFECT ENGAGEMENT OF SAID CLUTCH, AND MEANS ASSOCIATED WITH SAID SPACE BAR AND BACK SPACE LEVERS TO SELECTIVELY CONNECT ASSOCIATED ACTUATING LINKS TO SAID POWER ARM AND TO OPERATE SAID MEMBER WHEN EITHER THE SPACE BAR OR BACKSPACE LEVER IS MANIPULATED.
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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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |