US3152302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic testing apparatus having a rotating apertured cylinder for spirally scanning cylindrical workpieces
Assignee: ThyssenKrupp Budd Co
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Filing: 1962-05-16
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Granted: 1964-10-06
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Expires: 1982-05-16
Abstract
No abstract record available.
Inventors
- 👤 John W Allen
- 👤 Roy A Nance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:04
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
ELECTROMAGNETIC TESTING APPARATUS COMPRISING A STATIONARY WORKPIECE-ENCOMPASSING ANNULAR SEARCH COIL, A HOLLOW CYLINDRICAL SHIELD OF AN ELECTRICAL CONDUCTING MATERIAL COAXIALLY MOUNTED INTERNALLY OF SAID SEARCH COIL, SAID SHIELD INCLUDING A RADIAL APERATURE THERETHROUGH, AND MEANS ROTATING SAID SHIELD ABOUT ITS CYLINDRICAL AXIS, WHEREBY AN EFFECTIVE SCANNING AREA DEFINED BY SAID APERTURE IS ROTATED ABOUT A WORKPIECE POSITIONED INTERNALLY OF SAID SHIELD.
Claim 2
Dependent Claim
61 words
ELECTROMAGNETIC TESTING APPARATUS COMPRISING A STATIONARY WORKPIECE-ENCOMPASSING ANNULAR SEARCH COIL, A HOLLOW CYLINDRICAL SHIELD OF AN ELECTRICAL CONDUCTING MATERIAL COAXIALLY MOUNTED INTERNALLY OF SAID SEARCH COIL, SAID SHIELD INCLUDING A RADIAL APERATURE THERETHROUGH, AND MEANS ROTATING SAID SHIELD ABOUT ITS CYLINDRICAL AXIS, WHEREBY AN EFFECTIVE SCANNING AREA DEFINED BY SAID APERTURE IS ROTATED ABOUT A WORKPIECE POSITIONED INTERNALLY OF SAID SHIELD.
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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |