Patent US1822530A successfully refreshed from Google Patents.
Patent US3168606A successfully refreshed from Google Patents.
US3168606A
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Coil forming method and apparatus
Assignee: Scovill Inc
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Filing: 1961-12-26
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Granted: 1965-02-02
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Expires: 1981-12-26
Abstract
No abstract record available.
Inventors
- 👤 John E Burbank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:30
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/46; B21D53/50; B29; B29L; B29L2031/00; B29L2031/774; B29L2031/7742; Y; Y10; Y10S; Y10S425/00; Y10S425/007; Y10S425/814; Y10T; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/49785
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A METHOD OF FORMING COILS FROM A THERMO-PLASTIC FILAMENT COMPRISING (A) POSITIVELY FEEDING FROM A BODILY ROTATING SOURCE OF SUPPLY AND PUSHING THROUGH A GUIDE ROTATING ABOUT THE SAME AXIS AS SAID SOURCE OF SUPPLY, AN AMOUNT OF FILAMENT EQUAL TO ONE COMPLETE CONVOLUTION OF THE COIL TO BE FORMED UPON EACH COMPLETE ROTATION OF SAID GUIDE, WHEREBY THE FILAMENT FREELY ASSUMES THE SHAPE OF A HELIX AS IT EMERGES FROM THE GUIDE;
Claim 2
Independent Claim
73 words
A METHOD OF FORMING COILS FROM A THERMO-PLASTIC FILAMENT COMPRISING (A) POSITIVELY FEEDING FROM A BODILY ROTATING SOURCE OF SUPPLY AND PUSHING THROUGH A GUIDE ROTATING ABOUT THE SAME AXIS AS SAID SOURCE OF SUPPLY, AN AMOUNT OF FILAMENT EQUAL TO ONE COMPLETE CONVOLUTION OF THE COIL TO BE FORMED UPON EACH COMPLETE ROTATION OF SAID GUIDE, WHEREBY THE FILAMENT FREELY ASSUMES THE SHAPE OF A HELIX AS IT EMERGES FROM THE GUIDE;
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) | 1968-02-02 | 1968-08-03 | 1969-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-02 | 1972-08-03 | 1973-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-02 | 1976-08-03 | 1977-02-02 | $7700.00 | Window Closed / Lapsed |