Patent US3222764A successfully refreshed from Google Patents.
US3222764A
Expired / Lapsed
US
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Method of making articles having base layers and integral fins projecting therefrom
Assignee: Continental Can Co Inc
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Filing: 1962-02-28
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Granted: 1965-12-14
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Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Hansson Ants
- 👤 Robert M Brick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:00
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/20; B21C37/151; B21C37/202; B21C37/205; B21C37/207; B21D; B21D53/00; B21D53/02; B21D53/04; B21D53/045; B21J; B21J5/00; B21J5/06; B21J5/068; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378; Y10T29/49385; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF PRODUCING AN EXTERNALLY FINNED HOLLOW STRUCTURE HAVING A REDUCED BASE PORTION WITH EXTERNAL FINS PROJECTING THEREFROM, SAID METHOD COMPRISING THE STEPS OF PREPARING A BILLET WITH AN INTERNAL CHANNEL THEREIN, PLACING A RESIST IN SAID CHANNEL, FORMING DISCONTINUITIES IN SAID BILLET WHICH EXTEND INWARDLY FROM A SURFACE THEREOF, PLACING A RESIST WITHIN SAID DISCONTINUITIES, ROLLING SAID BILLET BY ROLL CONTACT WITH SAID SURFACE TO REDUCE ITS THICKNESS AND EXTEND ITS AREA CAUSING THE PORTIONS BETWEEN ADJACENT DISCONTINUITIES TO FORM SCALES ON THE BILLET, OPENING SAID CHANNEL TO FORM A HOLLOW STRUCTURE, AND BENDING SAID SCALE AWAY FROM SAID REDUCED BASE PORTION TO PROVIDE SPACED FINS INTEGRATED WITH THE BASE PORTION AND EXTENDING THEREFROM.
Claim 2
Independent Claim
116 words
THE METHOD OF PRODUCING AN EXTERNALLY FINNED HOLLOW STRUCTURE HAVING A REDUCED BASE PORTION WITH EXTERNAL FINS PROJECTING THEREFROM, SAID METHOD COMPRISING THE STEPS OF PREPARING A BILLET WITH AN INTERNAL CHANNEL THEREIN, PLACING A RESIST IN SAID CHANNEL, FORMING DISCONTINUITIES IN SAID BILLET WHICH EXTEND INWARDLY FROM A SURFACE THEREOF, PLACING A RESIST WITHIN SAID DISCONTINUITIES, ROLLING SAID BILLET BY ROLL CONTACT WITH SAID SURFACE TO REDUCE ITS THICKNESS AND EXTEND ITS AREA CAUSING THE PORTIONS BETWEEN ADJACENT DISCONTINUITIES TO FORM SCALES ON THE BILLET, OPENING SAID CHANNEL TO FORM A HOLLOW STRUCTURE, AND BENDING SAID SCALE AWAY FROM SAID REDUCED BASE PORTION TO PROVIDE SPACED FINS INTEGRATED WITH THE BASE PORTION AND EXTENDING THEREFROM.
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |