Patent US3685350A successfully refreshed from Google Patents.
US3685350A
Expired / Lapsed
US
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Ultrasonic probe
Assignee: Individual
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Filing: 1970-12-28
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Granted: 1972-08-22
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Expires: 1990-12-28
Abstract
Abstract Ultrasonic probe for detecting inhomogeneities in railroad axles including a magnet for adhering to an end face of an axle. Three or more transducer units supported through elastic means on a transducer support, and a compression spring acting between the transducer support and the magnet to urge faces of the transducer units into angularly spaced portions of the axle end face. The transducer support is rotatable relative to the magnet through 360 degrees. An additional compression spring urges a pin into a centering hole of the axle. Indicator light means are provided on the transducer support and adjustable resistance means are provided on the transducer support for equalizing the indications produced by the transducers.
Inventors
- 👤 Giuseppe Pettinato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:03
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
149 words
In an ultrasonic probe for detecting inhomogeneities in an axle or the like having a central axis, at least three transducer units having faces adapted to engage portions of an end face of said axle spaced radially from said central axis and in angularly spaced relation about said central axis, holding means for pressing said transducer faces into firm engagement with said portions of said end face while permitting conjoint rotation of said transducer units about said central axis, means for mounting a first one of said transducer units with its axis extending in a first direction diverging from said central axis, means for mounting a second one of said transducer units with its axis extending in a second direction converging toward said central axis, and means for mounting a third one of said transducer units with its axis extending in a third direction converging toward said central axis.
Claim 2
Dependent Claim
149 words
In an ultrasonic probe for detecting inhomogeneities in an axle or the like having a central axis, at least three transducer units having faces adapted to engage portions of an end face of said axle spaced radially from said central axis and in angularly spaced relation about said central axis, holding means for pressing said transducer faces into firm engagement with said portions of said end face while permitting conjoint rotation of said transducer units about said central axis, means for mounting a first one of said transducer units with its axis extending in a first direction diverging from said central axis, means for mounting a second one of said transducer units with its axis extending in a second direction converging toward said central axis, and means for mounting a third one of said transducer units with its axis extending in a third direction converging toward said central axis.
Claim 3
Dependent Claim
58 words
In an ultrasonic probe as defined in claim 1, wherein said first direction extends at an angle between 8* and 10* relative to said central axis, said second direction extending at an angle of approximately 14 degrees relative to said central axis, said third direction extending at an angle of approximately 19 degrees relative to said central axis.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |