US3570279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically recording the thickness of a product and the location of defects therein
Assignee: Stewarts and Lloyds Ltd
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Filing: 1969-06-20
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Granted: 1971-03-16
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Expires: 1989-06-20
Abstract
Abstract FOR AUTOMATICALLY RECORDING THE THICKNESS OF A PRODUCT AND THE LOCATION OF A DEFECT IN THE PRODUCT, AN APPARATUS AND METHOD ARE PROVIDED BY WHICH THE SURFACE OF THE PRODUCT IS SCANNED BY ULTRASONIC PULSES, THE TIME INTERVAL BETWEEN SELECTED REFLECTED PULSES IS MEASURED AND USED TO OPERATE RECORDING MEANS TO PROVIDE, ON A RECORDING MEDIUM MOVED IN SYNCHRONISM WITH THE SCANNING, A RECORD OF THE THICKNESS AND THE DEFECT, AND A RECORD OF THE POSITION OF THE DEFECT RELATIVE TO THE OTHER TWO DIMENSIONS OF THE PRODUCT.
Inventors
- 👤 David H Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:00
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/04; G01N29/06; G01N29/0609; G01N29/0618; G01N29/0636; G01B; G01B17/00; G01B17/02; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02854
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |