US3205688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal spinning method
Assignee: Milacron Inc
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Filing: 1961-11-06
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Granted: 1965-09-14
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Expires: 1981-11-06
Abstract
No abstract record available.
Inventors
- 👤 Richard A Paulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:56
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/14; B21D22/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49481
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE METHOD OF SPINNING A FLAT METAL BLANK OVER A MANDREL BY A PAIR OF TOOL RINGS ENGAGING WITH THE BLANK AS THEY MOVE ALONG THE MANDREL TO FORM IN A SINGLE, CONTINUOUS OPERATION A PART HAVING A GENERALLY CONICAL SECTION FOLLOWED BY A GENERALLY CYLINDRICAL SECTION WHICH COMPRISES: (A) ROTATING THE MANDREL AND THE BLANK AS A UNIT RELATIVE TO THE TOOL RINGS (B) MOVING ONE OF THE TOOL RINGS ALONG THE MANDREL WITH A PREDETERMINED SPACEING BETWEEN THE RING AND THE MANDREL WHICH IS APPROXIMATELY EQUAL TO THE ORIGINAL THICKNESS OF THE BLANK TO PRESS THE BLANK AGAINST THE MANDREL WITHOUT ANY SIGNIFICANT REDUCTION IN THE THICKNESS THEREOF, AND, (C) SIMULTANEOUSLY MOVING THE OTHER TOOL RING A PRESELECTED DISTANCE BEHIND THE FIRST-MENTIONED TOOL RING AND AT A SPACING FROM THE MANDREL EQUAL TO THE DESIRED THICKNESS OF THE FINISHED PART TO THEREBY EFFECT A SUBSTANTIAL REDUCTION IN THE THICKNESS OF THE BLANK MATERIAL AND SPIN THE PART TO ITS FINAL SHAPE AND SIZE.
Claim 2
Independent Claim
165 words
THE METHOD OF SPINNING A FLAT METAL BLANK OVER A MANDREL BY A PAIR OF TOOL RINGS ENGAGING WITH THE BLANK AS THEY MOVE ALONG THE MANDREL TO FORM IN A SINGLE, CONTINUOUS OPERATION A PART HAVING A GENERALLY CONICAL SECTION FOLLOWED BY A GENERALLY CYLINDRICAL SECTION WHICH COMPRISES: (A) ROTATING THE MANDREL AND THE BLANK AS A UNIT RELATIVE TO THE TOOL RINGS (B) MOVING ONE OF THE TOOL RINGS ALONG THE MANDREL WITH A PREDETERMINED SPACEING BETWEEN THE RING AND THE MANDREL WHICH IS APPROXIMATELY EQUAL TO THE ORIGINAL THICKNESS OF THE BLANK TO PRESS THE BLANK AGAINST THE MANDREL WITHOUT ANY SIGNIFICANT REDUCTION IN THE THICKNESS THEREOF, AND, (C) SIMULTANEOUSLY MOVING THE OTHER TOOL RING A PRESELECTED DISTANCE BEHIND THE FIRST-MENTIONED TOOL RING AND AT A SPACING FROM THE MANDREL EQUAL TO THE DESIRED THICKNESS OF THE FINISHED PART TO THEREBY EFFECT A SUBSTANTIAL REDUCTION IN THE THICKNESS OF THE BLANK MATERIAL AND SPIN THE PART TO ITS FINAL SHAPE AND SIZE.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |