Patent US3307991A successfully refreshed from Google Patents.
US3307991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for winding toroidal coils
Assignee: Magnatech International Inc
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Filing: 1963-04-01
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Granted: 1967-03-07
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Fahrbach Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:23
CPC Classifications
B; B65; B65H; B65H81/00; B65H81/02; B65H81/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
THE METHOD OF WINDING WIRE UPON A CLOSED CORE, SAID WIRE HAVING AN INSULATED SURFACE WHICH IS RENDERED TACKY BY A SUITABLE SOLVENT, COMPRISING THE STEPS OF FORMING A SINGLE LENGTH OF WIRE INTO A BUNDE OF PLURALITY OF LOOPS SUBSTANTIALLY IN A PLANE AT AN ANGLE TO THE PLANE OF THE CORE UPON A PLURALITY OF PULLEYS SPACED FROM THE APERTURE OF SAID CORE FRICTIONALLY ENGAGING A PORTION OF THE LOOPS, SIMULTANEOUSLY GUIDING BY A FIXED, RIGID, NON-ROTATING PLATE AN ARCUATE PORTION OF SAID BUNDLE THROUGH THE APERTURE OF THE CORE, APPLYING ONE END OF THE WIRE TO A FIXED POSITION, ROTATING THE BUNDLE, PEELING FROM THE BUNDLE A PORTION OF THE LOOP PORTION INTO A PLANE SPACED FROM THE PLANE OF THE BUNDLE AND SUBSTANTIALLY PARALLEL TO THE PLANE OF THE BUNDLE, TENSIONING THE LOOP PORTION INTO A GRADUALLY SHORTENED LOOP, TIGHTENING A PORTION OF SAID LOOP PORTION ON SAID CORE, REPEATING IN SEQUENCE THE PEELING, GUIDING, TENSIONING AND TIGHTENING STEPS, WHEREBY A CORE MAY BE WOUND WITH A PLURALITY OF WINDINGS.
Claim 2
Independent Claim
174 words
THE METHOD OF WINDING WIRE UPON A CLOSED CORE, SAID WIRE HAVING AN INSULATED SURFACE WHICH IS RENDERED TACKY BY A SUITABLE SOLVENT, COMPRISING THE STEPS OF FORMING A SINGLE LENGTH OF WIRE INTO A BUNDE OF PLURALITY OF LOOPS SUBSTANTIALLY IN A PLANE AT AN ANGLE TO THE PLANE OF THE CORE UPON A PLURALITY OF PULLEYS SPACED FROM THE APERTURE OF SAID CORE FRICTIONALLY ENGAGING A PORTION OF THE LOOPS, SIMULTANEOUSLY GUIDING BY A FIXED, RIGID, NON-ROTATING PLATE AN ARCUATE PORTION OF SAID BUNDLE THROUGH THE APERTURE OF THE CORE, APPLYING ONE END OF THE WIRE TO A FIXED POSITION, ROTATING THE BUNDLE, PEELING FROM THE BUNDLE A PORTION OF THE LOOP PORTION INTO A PLANE SPACED FROM THE PLANE OF THE BUNDLE AND SUBSTANTIALLY PARALLEL TO THE PLANE OF THE BUNDLE, TENSIONING THE LOOP PORTION INTO A GRADUALLY SHORTENED LOOP, TIGHTENING A PORTION OF SAID LOOP PORTION ON SAID CORE, REPEATING IN SEQUENCE THE PEELING, GUIDING, TENSIONING AND TIGHTENING STEPS, WHEREBY A CORE MAY BE WOUND WITH A PLURALITY OF WINDINGS.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |