US3570305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring depth of chilled layer on cast iron roll
Assignee: Hitachi Ltd
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Filing: 1968-03-11
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Granted: 1971-03-16
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Expires: 1988-03-11
Abstract
Abstract AN APPARATUS FOR MEASURING THE DEPTH OF THE CHILLED LAYER ON A CAST IRON ROLL BY SUE OF THE ULTRASONIC PULSE ECHO SYSTEM WHICH UTILIZES A T-R COUPLED PROBE, THE IMPROVEMENT BEING CHARACTERIZED IN THAT THERE IS PROVIDED AN ADJUSTABLE SLIT IN A BAFFLE BETWEEN THE RECIVER AND THE TRANSMITTER SO AS TO ADJUST AN AMOUNT OF THE SURFACE ECHO SIGNALS TO BE RECEIVED INDEPENDTLY OF THE BOUNDARY ECHO SIGNALS.
Inventors
- 👤 Soji Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:41
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/36; G01N29/40; G01B; G01B17/00; G01B17/02; G01B17/025; G01N29/04; G01N29/06; G01N29/0609; G01N29/0645; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02854
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) | 1974-03-15 | 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 |