US4201971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic centering apparatus
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1978-04-14
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Granted: 1980-05-06
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Expires: 1998-04-14
Abstract
Abstract An ultrasonic centering apparatus, wherein it comprises at least one ultrasonic transducer placed within an enclosure, said transducer transmitting at least one ultrasonic wave, means for collecting the different ultrasonic echos from the walls of said enclosure, means for measuring the time gap separating the reception of the different echos and means for displacing the transducer or transducers until the different echos are received at the same time by said echo receiving means. A particular application of the invention is to the centering of inspection equipment in the tubes of nuclear reactor vessels.
Inventors
- 👤 Robert Saglio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:19
CPC Classifications
G; G01; G01B; G01B17/00; G21; G21C; G21C17/00; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
An ultrasonic centering apparatus, wherein it comprises at least one ultrasonic transducer placed within an enclosure, said transducer transmitting at least one ultrasonic wave, means for collecting the different ultrasonic echos from the walls of said enclosure, means for measuring the time gap separating the reception of the different echos and means for displacing the transducer or transducers until the different echos are received at the same time by said echo receiving means.
Claim 2
Dependent Claim
73 words
An ultrasonic centering apparatus, wherein it comprises at least one ultrasonic transducer placed within an enclosure, said transducer transmitting at least one ultrasonic wave, means for collecting the different ultrasonic echos from the walls of said enclosure, means for measuring the time gap separating the reception of the different echos and means for displacing the transducer or transducers until the different echos are received at the same time by said echo receiving means.
Claim 3
Dependent Claim
35 words
An apparatus according to claim 1, wherein it comprises a single ultrasonic transmitting-receiving transducer which faces the apex of a dihedron whose faces form an angle of 45° with the transmitting-receiving face of the transducer.
Claim 4
Dependent Claim
34 words
An apparatus according to claim 1, wherein it comprises a single ultrasonic transmitting-receiving transducer facing the apex of a pyramid, whose faces form an angle of 45° with the transmitting-receiving face of the transducer.
Claim 5
Dependent Claim
41 words
An apparatus according to claim 1, wherein it comprises a single ultrasonic transmitting-receiving transducer facing the apex of a cone, whose apex angle is 90° and whose generating lines form an angle of 45° with the transmitting-receiving face of the transducer.
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) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |