Patent US3334508A successfully refreshed from Google Patents.
US3334508A
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Method and apparatus for controlling flatness in sheet metal
Assignee: Cyprus Amax Minerals Co
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Filing: 1964-11-09
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Granted: 1967-08-08
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:26
CPC Classifications
B; B21; B21B; B21B38/00; B21B38/02; B21B37/00; B21B37/28; B21B37/30; B21B37/32; G; G01; G01L; G01L5/00; G01L5/04; G01L5/045; B21B38/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF DETERMINING AND CONTROLLING THE FLATNESS OF SHEET METAL WHILE BEING ROLLED ON A COLD MILL, COMPRISING THE STEPS OF: APPLYING LONGITUDINAL TENSION TO THE SHEET BETWEEN THE WORK ROLLS OF A COLD MILL AND THE REWIND COIL UPON WHICH THE SHEET IS BEING WOUND; APPLYING PRESSURE AGAINST ONE SIDE OF THE SHEET AND NORMAL TO THE SURFACE THEREOF AT A PLURALITY OF TRANSVERSELY SPACED POINTS ACROSS THE WIDTH OF THE SHEET; SENSING THE DEFLECTION OF THE SHEET AT EACH OF SAID POINTS OF PRESSURE APPLICATION; CONVERTING THE DEFLECTION OF SAID SHEET AT EACH OF SAID PLURALITY OF POINTS OF PRESSURE APPLICATION INTO AN ELECTRICAL SIGNAL; INTEGRATING SAID ELECTRICAL SIGNALS AND CONVERTING THEM INTO A VISUAL OSCILLOSCOPE TRACE REPRESENTING AN EXAGGERATED PROFILE OF THE FLATNESS OF THE SHEET; AND
Claim 2
Independent Claim
131 words
THE METHOD OF DETERMINING AND CONTROLLING THE FLATNESS OF SHEET METAL WHILE BEING ROLLED ON A COLD MILL, COMPRISING THE STEPS OF: APPLYING LONGITUDINAL TENSION TO THE SHEET BETWEEN THE WORK ROLLS OF A COLD MILL AND THE REWIND COIL UPON WHICH THE SHEET IS BEING WOUND; APPLYING PRESSURE AGAINST ONE SIDE OF THE SHEET AND NORMAL TO THE SURFACE THEREOF AT A PLURALITY OF TRANSVERSELY SPACED POINTS ACROSS THE WIDTH OF THE SHEET; SENSING THE DEFLECTION OF THE SHEET AT EACH OF SAID POINTS OF PRESSURE APPLICATION; CONVERTING THE DEFLECTION OF SAID SHEET AT EACH OF SAID PLURALITY OF POINTS OF PRESSURE APPLICATION INTO AN ELECTRICAL SIGNAL; INTEGRATING SAID ELECTRICAL SIGNALS AND CONVERTING THEM INTO A VISUAL OSCILLOSCOPE TRACE REPRESENTING AN EXAGGERATED PROFILE OF THE FLATNESS OF THE SHEET; AND
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |