US3160753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for measuring hardness
Assignee: Industrial Nucleonics Corp
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Filing: 1959-02-02
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Granted: 1964-12-08
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Expires: 1979-02-02
Abstract
No abstract record available.
Inventors
- 👤 Donald E Varner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:59
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/20; G01N23/203
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
THE METHOD OF UTILIZING A NUCLEAR RADIATION-REFLECTION GAUGE TO OBTAIN A USEFUL INDICATION OF THE UNKNOWN HARDNESS CHARACTERISTIC OF A TRAVELLING METALLIC WORKPIECE HAVING SUBSTANTIALLY CONSTANT, HOMOGENEOUS COMPOSITION, WHICH COMPRISES MOUNTING IN SAID GAUGE A SOURCE OF NUCLEAR RADIATION HAVING AN ENERGY CHARACTERISTIC SUCH THAT SAID WORKPIECE PRESENTS AN INFINITE THICKNESS TO SAID RADIATION, CALIBRATING SAID GAUGE SO THAT WHEN SPECIMENS OF MATERIAL HAVING SAID COMPOSITION ARE MEASURED THEREBY, THE READING OF SAID GAUGE IS IN SUBSTANTIAL AGREEMENT WITH THE HARDNESS OF SAID SPECIMENS AS DETERMINED BY OTHER MEANS, AND THEREAFTER MEASURING SAID TRAVELING WORKPIECE WITH SAID GAUGE WHEREBY THE HARDNESS OF SAID WORKPIECE IS CONTINUOUSLY INDICATED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |