US3677061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic test standard
Assignee: Amsted Industries Inc
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Filing: 1971-02-10
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Granted: 1972-07-18
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Expires: 1991-02-10
Abstract
Abstract A device for calibrating an ultrasonic testing machine. A test standard unit including a sleeve holder for an ultrasonic transducer and a standard test specimen is provided. The standard test piece closes one end of the sleeve and is secured to it also. The other end of the sleeve holder is arranged to slidably receive the transducer and hold it spaced at a predetermined distance from the standard test piece defining therebetween a water chamber. The transducer picks up sound signals reflected from the article being tested and converts the sound signal to a visual signal on an oscilloscope.
Inventors
- 👤 Jan Visser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:06
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/22; G01N29/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
A device for calibrating an ultrasonic testing machine of the type wherein a transducer picks up sound signals reflected from an article being tested and converts the sound signal to a visual signal on an oscilloscope, the device comprising: a sleeve, a standard test piece closing one end of the sleeve and secured thereto, the test piece having a reference standard hole at the end remote from said sleeve, the other end of said sleeve being arranged to slidably receive the transducer and hold it spaced at a predetermined distance from the standard test piece to define therebetween a water chamber.
Claim 2
Independent Claim
101 words
A device for calibrating an ultrasonic testing machine of the type wherein a transducer picks up sound signals reflected from an article being tested and converts the sound signal to a visual signal on an oscilloscope, the device comprising: a sleeve, a standard test piece closing one end of the sleeve and secured thereto, the test piece having a reference standard hole at the end remote from said sleeve, the other end of said sleeve being arranged to slidably receive the transducer and hold it spaced at a predetermined distance from the standard test piece to define therebetween a water chamber.
Claim 3
Dependent Claim
18 words
A device according to claim 1 wherein one or more air vent holes are provided in said sleeve.
Claim 4
Dependent Claim
41 words
A device according to claim 1 wherein the transducer and the test piece have facing surfaces which with the sleeve form said water chamber, said surfaces being parallel with each other and with the bottom surface of the reference standard hole.
Claim 5
Dependent Claim
31 words
A device according to claim 1 wherein the end of the standard test piece remote from the sleeve is provided with a plurality of reference holes of uniform depth and diameter.
Claim 6
Dependent Claim
30 words
A device according to claim 4 wherein said remote end of the standard test piece is wedge shaped, and the reference holes are aligned along the apex of the wedge.
References Cited (Backward Citations)
US3491580A
Cited
US3531977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |