US3333623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making the eye portion of needles
Assignee: VEB ZENTRALE ENTWICKLUNG-KONSTRUKTION fur EISEN- BLECH- und METALLWAREN
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Filing: 1966-07-08
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Granted: 1967-08-01
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Expires: 1986-07-08
Abstract
No abstract record available.
Inventors
- 👤 Recknagel Lothar
- 👤 Fischer Ernst
- 👤 Jager Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:20
CPC Classifications
B; B21; B21G; B21G1/00; B21G1/02; B21G1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A METHOD OF MAKING THE EYE PORTIONS OF SEWING MACHINE NEEDLES COMPRISING THE STEP OF PRESS-FORMING OPPOSITE THREAD GROOVES IN THE NEEDLE WITH FURTHER DEPRESSIONS BEYOND THE BOTTOM OF SAID GROOVES TO PROVIDE AN EYE WEB BETWEEN THE DEPRESSIONS, THE STEP OF FURTHER PRESS-FORMING THE EYE WEB TO SHRINK ITS THICKNESS, AND THE STEP OF PUNCHING OUT THE EYE WEB OF SHRUNK THICKNESS, WHEREBY A NEEDLE EYE PORTION IS PROVIDED WHICH REQUIRES NO MANUAL GRINDING AND POLISHING.
Claim 2
Independent Claim
77 words
A METHOD OF MAKING THE EYE PORTIONS OF SEWING MACHINE NEEDLES COMPRISING THE STEP OF PRESS-FORMING OPPOSITE THREAD GROOVES IN THE NEEDLE WITH FURTHER DEPRESSIONS BEYOND THE BOTTOM OF SAID GROOVES TO PROVIDE AN EYE WEB BETWEEN THE DEPRESSIONS, THE STEP OF FURTHER PRESS-FORMING THE EYE WEB TO SHRINK ITS THICKNESS, AND THE STEP OF PUNCHING OUT THE EYE WEB OF SHRUNK THICKNESS, WHEREBY A NEEDLE EYE PORTION IS PROVIDED WHICH REQUIRES NO MANUAL GRINDING AND POLISHING.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |