US2846589A
Expired / Lapsed
US
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Apparatus for determining the thickness of zinc coating on a ferrous metal base
Assignee: United States Steel Corp
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Filing: 1954-04-01
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Granted: 1958-08-05
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Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 George E Pellissier
- 👤 Everett E Wicker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:11
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/223; G01N2223/00; G01N2223/07; G01N2223/076
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
APPARATUS FOR DETERMINING THE THICKNESS OF A ZINC COATING ON A FERROUS METAL BASE COMPRISING AN X-RAY TUBE ARRANGED TO DIRECT A PRIMARY X-RAY BEAM INTO THE BASE MATERIAL, THE SURFACE OF SAID BASE MATERIAL MAKING AN ANGLE OF AT LEAST APPROXIMATELY 70* WITH THE X-RAY BEAM, A RADIATION DETECTOR ARRANGED ON THE SAME SIDE OF THE FERROUS METAL BASE AS THE X-RAY TUBE FOR DETECTING FLUORESCENT RADIATION FROM THE FERROUS METAL BASE, THE SURFACE OF SAID BASE MATERIAL MAKING AN ANGLE OF AT LEAST APPROXIMATELY 70* WITH THE AXIS OF SAID RADIATION DETECTOR AND A FILTER LOCATED BETWEEN THE FERROUS METAL BASE AND THE RADIATION DETECTOR, SAID FILTER BEING APPROXIMATELY BETWEEN .001 AND .003 INCH THICK AND FORMED OF A MATERIAL OF THE CLASS CONSISTING OF NICKEL, IRON AND NICKEL-IRON ALLOYS.
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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |