US3175783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bobbin for a sewing machine
Assignee: Singer Co
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Filing: 1962-11-13
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Granted: 1965-03-30
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Ketterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:05
CPC Classifications
D; D05; D05B; D05B57/00; D05B57/26; D05B57/265; D05B59/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
164 words
A BOBBIN FOR A LOCK STITCH SEWING MACHINE COMPRISING A HUB MEANS, A PAIR OF CIRCULAR FLANGES HAVING SUBSTANTIALLY PLANAR INSIDE SURFACES OF DIFFERENT DIAMETERS EXTENDING RADIALLY FROM SAID HUB MEANS IN AXIALLY SPACED RELATION THEREON TO DEFINE AN INNER REEL, AND AN ADDITIONAL FLANGE FORMED WITH A SUBSTANTIALLY PLANAR INSIDE SURFACE AND A CIRCULAT BEARING SEAT, MEANS ASSOCIATED WITH SAID HUB MEANS FOR CONSTRAINING SAID ADDITIONAL FLANGE WITH SAID BEARING SEAT ROTATABLY EMBRACING THE PERIPHERY OF THAT ONE OF SAID PAIR OF INNER REEL FLANGES HAVING THE SMALLER DIAMETER AND WITH THE INSIDE SURFACES OF SAID ADDITIONAL FLANGE AND OF SAID ONE INNER REEL FLANGES BEING SUBSTANTIALLY COPLANAR DURING ROTATION OF SAID INNER REEL RELATIVELY TO SAID ADDITIONAL FLANGE, AND SAID ADDITIONAL FLANGE HAVING A PERIPHERAL DIAMETER GREATER THAN THE ONE OF SAID INNER REEL FLANGES OF LARGER DIAMETER AND ADAPTED TO BE INTERLOCKED ROTATIONALLY WITH SAID INNER REEL FLANGE OF LARGER DIAMETER BY A PREDETERMINED QUANTITY OF THREAD WOUND ON SAID BOBBIN.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |