US3961522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for recording discontinuities
Assignee: Individual
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Filing: 1974-05-21
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Granted: 1976-06-08
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Expires: 1994-05-21
Abstract
Abstract In an apparatus for counting the faults contained in a given volume by reflection of ultrasonic waves from a transmitter there are provided pulse counters for registering any pulse constituting the video signal received by said counters which are preset to different actuation thresholds corresponding to different amplitude levels of the signals owing to the faults, said counters being subjected to a frequency divider and a time selector for avoiding counting the same fault several times and for authorizing counting during a time corresponding to the depth of the desired probing.
Inventors
- 👤 Joseph-Bernard Leon Kilen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:40
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/44; G01N29/4409; G01N29/4427; G01N29/04; G01N29/06; G01N29/0609; G01N29/0618; G01N29/11; G01N29/22; G01N29/26; G01N29/265; G01N29/30; G01N29/4445; G01N29/48; G06; G06M; G06M11/00; G01N2291/00; G01N2291/04; G01N2291/044
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
An ultrasonic non-destructive testing apparatus for detecting and counting discontinuities in a given volume and particularly inclusions in a piece, comprising an ultrasonic waves transmitter directing ultrasonic waves into said given volume at a given pulse repetition frequency, pulse counters capable of registering all the pulses constituting the video signal entirely received by each of said pulse counters, said pulse counters being each preset to a different actuation threshold, a frequency divider for dividing the pulse repetition frequency to vary the sounding density along the path of the scanner, and a time selector combined with said divider to allow each of said counters to count during a determined time corresponding to the depth of the desired probing all the signals whose amplitude exceeds the actuation threshold of the associated said counter.
Claim 2
Dependent Claim
131 words
An ultrasonic non-destructive testing apparatus for detecting and counting discontinuities in a given volume and particularly inclusions in a piece, comprising an ultrasonic waves transmitter directing ultrasonic waves into said given volume at a given pulse repetition frequency, pulse counters capable of registering all the pulses constituting the video signal entirely received by each of said pulse counters, said pulse counters being each preset to a different actuation threshold, a frequency divider for dividing the pulse repetition frequency to vary the sounding density along the path of the scanner, and a time selector combined with said divider to allow each of said counters to count during a determined time corresponding to the depth of the desired probing all the signals whose amplitude exceeds the actuation threshold of the associated said counter.
Claim 3
Dependent Claim
27 words
An apparatus as claimed in claim 1, in which said frequency divider controls said time selector and said time selector releases said counters for a predetermined time.
Claim 4
Dependent Claim
14 words
An apparatus as claimed in claim 1, in which there are three said counters.
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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |