US3559438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of planing thin metallic strips and corresponding planing device
Assignee: NORD AVIAT SOC NATIONAL DE CON
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Filing: 1968-07-29
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Granted: 1971-02-02
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Expires: 1988-07-29
Abstract
Abstract METHOD AND MACHINE FOR PLANING THIN METALLIC STRIPS HAVING MORE OR LESS LARGE BLISTERS INCLUDED IN ADJOINING STRAINED ZONES, CHARACTERIZED IN THAT LATERAL STRAINS, WITH A TENDENCY TO THE WIDENING OF THE STRIP, ARE PRODUCED BY THE ANGULAR PASSAGE OF THE STRIP UNDER LONGITUDINAL STRESS, OVER AT LEAST ONE RADIATED EDGE OF A PLANING TOOL, IN ORDER TO OBTAIN A RESORPTION OF THE BLISTERS BY RECOMPRESSION OF THE LATTER WITH OVERSTEPPING OF THE ELASTIC LIMIT.
Inventors
- 👤 Georges Rouyer
- 👤 Gaston Fontaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:04
CPC Classifications
B; B21; B21D; B21D1/00; B21D1/05; B21D1/02
Claims Analysis
Total Claims: 0
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |