US3204442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for simultaneously imparting an alternate series of thread forms on a workpiece
Assignee: UNITED STATES TRUST COMPANY A MASSACHUSETTS TRUST Co
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Filing: 1963-07-30
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Granted: 1965-09-07
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Expires: 1983-07-30
Abstract
No abstract record available.
Inventors
- 👤 George L Wieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:39
CPC Classifications
B; B21; B21H; B21H3/00; B21H3/02; B21H3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF FORMING HIGH AND LOW THREADS ON A CYLINDRICAL SCREW BLANK LOCATED BETWEEN OPPOSED DIES COMPRISING THE STEPS OF RELATIVELY MOVING THE DIES AND THE BLANK, BY SAID MOVING OF DIES AND BLANK DISPLACING MATERIAL FOR THE HIGH THREADS AT A FIRST RATE, AND DISPLACING MATERIAL FOR THE LOW THREADS AT A SECOND RATE WHICH IS LESS THAN SAID FIRST RATE, AND DECREASING THE RATES OF DISPLACING MATERIAL FOR BOTH HIGH AND LOW THREADS AS SAID MOVING OF DIE AND BLANK PROCEEDS.
Claim 2
Independent Claim
84 words
THE METHOD OF FORMING HIGH AND LOW THREADS ON A CYLINDRICAL SCREW BLANK LOCATED BETWEEN OPPOSED DIES COMPRISING THE STEPS OF RELATIVELY MOVING THE DIES AND THE BLANK, BY SAID MOVING OF DIES AND BLANK DISPLACING MATERIAL FOR THE HIGH THREADS AT A FIRST RATE, AND DISPLACING MATERIAL FOR THE LOW THREADS AT A SECOND RATE WHICH IS LESS THAN SAID FIRST RATE, AND DECREASING THE RATES OF DISPLACING MATERIAL FOR BOTH HIGH AND LOW THREADS AS SAID MOVING OF DIE AND BLANK PROCEEDS.
References Cited (Backward Citations)
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |