Patent US3267252A successfully refreshed from Google Patents.
US3267252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge conditioning of metal strips by high frequency resistance heating
Assignee: AMF Inc
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Filing: 1964-12-23
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Granted: 1966-08-16
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Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Morris Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:05
CPC Classifications
B; B21; B21D; B21D19/00; B21D19/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD FOR CONDITIONING THE LONGITUDINAL EDGE OF AN ELONGATED METAL STRIP TO REMOVE IRREGULARITIES THEREFROM AND TO RESHAPE SAID EDGE TO A DESIRED CONFIGURATION, SAID METHOD COMPRISING RAPIDLY ADVANCING SAID STRIP AND BRINGING THE EDGE THEREOF INTO CONTACT WITH ROLLER EDGE SHAPING MEANS AT AN EDGE CONDITIONING STATION, MAINTAINING ALONG ON SAID EDGE OF SAID STRIP AT A HEATING CURRENT ADVANCE OF SAID EDGE CONDITIONING STATION HEATING CURRENT OF A FREQUENCY IN THE ORDER OF 100,000 CYCLES PER SECOND OR HIGHER, SAID CURRENT BEING CONDUCTIVELY APPLIED AND BEING CONCENTRATED TO FLOW IN A SINGLE PATH ALONG ON SAID EDGE TO THE STRIP, SAID CURRENT BEING SUFFICIENT TO BRING SAID EDGE TO A TEMPERATURE RENDERING THE METAL THEREOF PLASTIC
Claim 2
Independent Claim
119 words
A METHOD FOR CONDITIONING THE LONGITUDINAL EDGE OF AN ELONGATED METAL STRIP TO REMOVE IRREGULARITIES THEREFROM AND TO RESHAPE SAID EDGE TO A DESIRED CONFIGURATION, SAID METHOD COMPRISING RAPIDLY ADVANCING SAID STRIP AND BRINGING THE EDGE THEREOF INTO CONTACT WITH ROLLER EDGE SHAPING MEANS AT AN EDGE CONDITIONING STATION, MAINTAINING ALONG ON SAID EDGE OF SAID STRIP AT A HEATING CURRENT ADVANCE OF SAID EDGE CONDITIONING STATION HEATING CURRENT OF A FREQUENCY IN THE ORDER OF 100,000 CYCLES PER SECOND OR HIGHER, SAID CURRENT BEING CONDUCTIVELY APPLIED AND BEING CONCENTRATED TO FLOW IN A SINGLE PATH ALONG ON SAID EDGE TO THE STRIP, SAID CURRENT BEING SUFFICIENT TO BRING SAID EDGE TO A TEMPERATURE RENDERING THE METAL THEREOF PLASTIC
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |