US3126852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt-tensioning device for foldable sewing machines
Assignee: —
•
Filing: —
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Granted: 1964-03-31
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Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:38
CPC Classifications
D; D05; D05B; D05B75/00; D05B75/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
227 words
IN A FOLDABLE SEWING MACHINE COMPRISING A TABLE TOP, A HINGE CARRIED BY SAID TABLE TOP, A BODY ADAPTED TO SWING ABOUT SAID HINGE BETWEEN A WORKING AND A FOLDED POSITION, A DRIVING AND A DRIVEN SHEAVE, AND A ROUND, CORD-LIKE BELT, HAVING A FORE AND AFT STRAND; A TENSIONING DEVICE FOR SAID BELT ADAPTED TO KEEP SAID BELT IN TENSION WHILE SAID BODY SWINGS ABOUT SAID HINGE, A GUIDE SHEAVE ADAPTED TO RETAIN SAID FORE STRAND OF SAID BELT AGAINST SAID TENSIONING DEVICE FOR ANY POSITION OF SAID BODY, MEANS ADAPTED TO RETAIN SAID AFT STRAND OF SAID BELT DURING SAID SWINGING OF SAID BODY, A BRAKING DEVICE OPERATIVELY CONNECTED WITH SAID TENSIONING DEVICE AND ADAPTED TO BLOCK SAID DRIVING SHEAVE WHEN SAID SEWING MACHINE IS IN SAID FOLDED POSITION, A BRACKET FIXED TO SAID BODY ADAPTED TO SWING THEREWITH AND TO CARRY SAID GUIDE SHEAVE AND SAID MEANS, AN ARM HAVING AN END PIVOTALLY MOUNTED ON SAID BRACKET AND ANOTHER FREE END, A LOOSE SHEAVE ROTATABLY CARRIED BY SAID FREE END OF SAID ARM AND ADAPTED TO BEAR AGAINST SAID FORESTRAND OF SAID BELT, AND A SPRING TENSIONED BETWEEN SAID ARM AND SAID BRACKET AND ADAPTED TO PUSH SAID LOOSE SHEAVE AGAINST SAID BELT AS TO KEEP SAID BELT IN TENSION FOR ANY POSITION OF SAID BODY, WHILE THE LATTER IS SWINGING ABOUT SAID HINGE.
Claim 2
Dependent Claim
227 words
IN A FOLDABLE SEWING MACHINE COMPRISING A TABLE TOP, A HINGE CARRIED BY SAID TABLE TOP, A BODY ADAPTED TO SWING ABOUT SAID HINGE BETWEEN A WORKING AND A FOLDED POSITION, A DRIVING AND A DRIVEN SHEAVE, AND A ROUND, CORD-LIKE BELT, HAVING A FORE AND AFT STRAND; A TENSIONING DEVICE FOR SAID BELT ADAPTED TO KEEP SAID BELT IN TENSION WHILE SAID BODY SWINGS ABOUT SAID HINGE, A GUIDE SHEAVE ADAPTED TO RETAIN SAID FORE STRAND OF SAID BELT AGAINST SAID TENSIONING DEVICE FOR ANY POSITION OF SAID BODY, MEANS ADAPTED TO RETAIN SAID AFT STRAND OF SAID BELT DURING SAID SWINGING OF SAID BODY, A BRAKING DEVICE OPERATIVELY CONNECTED WITH SAID TENSIONING DEVICE AND ADAPTED TO BLOCK SAID DRIVING SHEAVE WHEN SAID SEWING MACHINE IS IN SAID FOLDED POSITION, A BRACKET FIXED TO SAID BODY ADAPTED TO SWING THEREWITH AND TO CARRY SAID GUIDE SHEAVE AND SAID MEANS, AN ARM HAVING AN END PIVOTALLY MOUNTED ON SAID BRACKET AND ANOTHER FREE END, A LOOSE SHEAVE ROTATABLY CARRIED BY SAID FREE END OF SAID ARM AND ADAPTED TO BEAR AGAINST SAID FORESTRAND OF SAID BELT, AND A SPRING TENSIONED BETWEEN SAID ARM AND SAID BRACKET AND ADAPTED TO PUSH SAID LOOSE SHEAVE AGAINST SAID BELT AS TO KEEP SAID BELT IN TENSION FOR ANY POSITION OF SAID BODY, WHILE THE LATTER IS SWINGING ABOUT SAID HINGE.
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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |