Patent US3981184A successfully refreshed from Google Patents.
US3981184A
Expired / Lapsed
US
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Ultrasonic diagnostic inspection systems
Assignee: Ex-Cell-O Corp
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Filing: 1975-05-07
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Granted: 1976-09-21
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Expires: 1995-05-07
Abstract
Abstract An automatic ultrasonic inspection system for automatically testing billets by the pulse reflection type of inspection and further utilizing an ultrasonic transducer for thru-transmission of energy for automatic distance-amplitude correction and including indexing means having an angular scan encoder and an axial scan encoder such that reflections obtained indicative of defects are accurately correlated with their three dimensional positions in the billets. A defect gate receives the reflections through the billet and if a defect meets a preset criteria such defect information is displayed and passed to a computer wherein the position of the defect is stored. The computer can provide various outputs such as alphanumeric-graphic display or printed outputs.
Inventors
- 👤 Istvan M. Matay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:42
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/04; G01N29/06; G01N29/0609; G01N29/0645; G01N29/44; G01N29/4463
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
205 words
An ultrasonic inspection system for a test specimen comprising, a pulser, a transducer connected to said pulser for transmitting and receiving ultrasonic energy into and from said specimen, a receiver connected to said transducer, angular indexing means producing an output indicative of the angular position of said transducer relative to said specimen, longitudinal indexing means producing an output indicative of the longitudinal position of said transducer, and a computing and presentation means receiving the outputs of said receiver, said angular indexing means and said longitudinal indexing means and producing an output indicative of the internal structure of said test specimen, wherein said computing and presentation means include a timing means which supplies an input to said pulser, means for changing the angular relationship between said transducer and said test specimen, means for changing the longitudinal relationship between said transducer and said test specimen, an adjustable level gate receiving the output of said receiver and passing echoes above a preset level to said computing and presenting means, and a second transducer mounted adjacent said test specimen on the side opposite said transducer, and an automatic distance amplitude controller receiving the output of said second transducer and supplying an output to said receiver to vary its gain.
Claim 2
Dependent Claim
205 words
An ultrasonic inspection system for a test specimen comprising, a pulser, a transducer connected to said pulser for transmitting and receiving ultrasonic energy into and from said specimen, a receiver connected to said transducer, angular indexing means producing an output indicative of the angular position of said transducer relative to said specimen, longitudinal indexing means producing an output indicative of the longitudinal position of said transducer, and a computing and presentation means receiving the outputs of said receiver, said angular indexing means and said longitudinal indexing means and producing an output indicative of the internal structure of said test specimen, wherein said computing and presentation means include a timing means which supplies an input to said pulser, means for changing the angular relationship between said transducer and said test specimen, means for changing the longitudinal relationship between said transducer and said test specimen, an adjustable level gate receiving the output of said receiver and passing echoes above a preset level to said computing and presenting means, and a second transducer mounted adjacent said test specimen on the side opposite said transducer, and an automatic distance amplitude controller receiving the output of said second transducer and supplying an output to said receiver to vary its gain.
Claim 3
Dependent Claim
20 words
An ultrasonic inspection system according to claim 1 including a real time presentation means receiving an output of said receiver.
Claim 4
Dependent Claim
19 words
An ultrasonic inspection system according to claim 2 where said real time presentation means is an A-scan cathode display.
Claim 5
Dependent Claim
29 words
An ultrasonic inspection system according to claim 1 including a display means receiving at least a portion of its input information from storage in said computing and presentation means.
Claim 6
Dependent Claim
17 words
. An ultrasonic inspection system according to claim 4 wherein said display means comprises a compound B-scan.
Claim 7
Dependent Claim
16 words
An ultrasonic inspection system according to claim 4 wherein said display means is an alphanumeric-graphic display.
Claim 8
Dependent Claim
15 words
An ultrasonic inspection system according to claim 4 wherein said display means is a printer.
Claim 9
Dependent Claim
15 words
An ultrasonic inspection system according to claim 1 wherein said test specimen is cylindrical shaped.
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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |