US3324813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment driving stud for a screwless needle-clamp
Assignee: Singer Co
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Filing: 1964-07-10
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Granted: 1967-06-13
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Expires: 1984-07-10
Abstract
No abstract record available.
Inventors
- 👤 Roger J Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:47
CPC Classifications
D; D05; D05B; D05B55/00; D05B55/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AN ATTACHMENT-DRIVING DEVICE ADAPTED FOR USE ON A SEWING MACHINE NEEDLE-BAR FITTED WITH A SCREWLESS NEEDLECLAMP, COMPRISING, A SUBSTANTIALLY L-SHAPED BRACKET, SAID BRACKET INCLUDING A HORIZONTAL BIFURCATED LIMB AND A DEPENDING LIMB, AN ATTACHMET DRIVING STUD CONNECTED TO AND EXTENDING LATERALLY FROM SAID DEPENDING LIMB, AND MEANS FOR CLAMPING SAID BRACKET TO THE SCREWLESS NEEDLEBAR INCLUDING A SPRING WIRE MEMBER SECURED TO SAID L-SHAPED BRACKET, WHEREBY SAID ATTACHMENT DRIVING DEVICE MAY BE DETACHABLY MOUNTED ON THE LOWER PORTION OF SAID NEEDLE-BAR.
Claim 2
Dependent Claim
81 words
AN ATTACHMENT-DRIVING DEVICE ADAPTED FOR USE ON A SEWING MACHINE NEEDLE-BAR FITTED WITH A SCREWLESS NEEDLECLAMP, COMPRISING, A SUBSTANTIALLY L-SHAPED BRACKET, SAID BRACKET INCLUDING A HORIZONTAL BIFURCATED LIMB AND A DEPENDING LIMB, AN ATTACHMET DRIVING STUD CONNECTED TO AND EXTENDING LATERALLY FROM SAID DEPENDING LIMB, AND MEANS FOR CLAMPING SAID BRACKET TO THE SCREWLESS NEEDLEBAR INCLUDING A SPRING WIRE MEMBER SECURED TO SAID L-SHAPED BRACKET, WHEREBY SAID ATTACHMENT DRIVING DEVICE MAY BE DETACHABLY MOUNTED ON THE LOWER PORTION OF SAID NEEDLE-BAR.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |