Patent US3557592A successfully refreshed from Google Patents.
US3557592A
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US
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Apparatus for and method of producing strip metal
Assignee: LEE WILSON ENGINEERING Co Inc
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Filing: 1968-11-07
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Granted: 1971-01-26
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Expires: 1988-11-07
Abstract
Abstract A METHOD OF PRODUCING STRIP METAL IN WHICH SPACED PROJECTION OR BULGES ARE FORMED ALONG AN EDGE OF A LENGTH OF STRIP, THE PROJECTIONS BEING SO DIMENXIONED, AS TO SPAN OR CHORD AND AS TO HEIGHT OR OFF-SET FROM THE PLANE OF THE STRIP SURFACE, THAT THE METAL OF THE PROJECTIONS IS NOT ELONGATED DURING FORMATION BY A PERCENTAGE AMOUNT GREATER THAN THE PRECENTAGE ELONGATION WHICH WILL BE IMPARTED TO THE STRIP IN A TEMPER PASS FOLLOWING ANNEALING OR OTHER HEAT TREATMENT OF THE STRIP IN AN OPEN COIL.
Inventors
- 👤 Edwin A Corns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:38
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; B; B21; B21C; B21C47/00; B21C47/26; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12333; Y10T428/1241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |