US3075144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube wall thickness testing apparatus
Assignee: Holly Sugar Corp
•
Filing: 1959-07-10
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Granted: 1963-01-22
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Expires: 1979-07-10
Abstract
No abstract record available.
Inventors
- 👤 Bert E Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:14
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
APPARATUS FOR TESTING THE TUBE WALL THICKNESS OF NONMAGNETIC MATERIAL, COMPRISING A PROBE ADAPTED TO BE INSERTED WITHIN THE TUBE AND HAVING A PAIR OF AXIALLY ALIGNED CORES, A NON-MAGNETIC SPACER EXTENDING BETWEEN SAID CORES, COIL MEANS WOUND ON EACH CORE WITH THE FIRST COIL MEANS HAVING A TOTAL RESISTANCE MANY TIMES THE SECOND COIL MEANS; MEANS CONNECTING SAID FIRST COIL MEANS ACROSS A SOURCE OF ALTERNATING CURRENT; METER MEANS; A POTENTIOMETER CONNECTED BETWEEN ONE SIDE OF SAID FIRST COIL MEANS AND ONE SIDE OF THE ALTERNATING CURRENT SOURCE WITH THE SLIDING TAP THEREOF BEING CONNECTED TO A FIRST TERMINAL OF SAID METER MEANS; MEANS CONNECTING ONE END OF SAID SECOND COIL MEANS TO SAID FIRST TERMINAL OF SAID METER, THE OTHER END OF SAID SECOND COIL MEANS BEING CONNECTED TO SAID ONE SIDE OF THE ALTERNATING CURRENT SOURCE; AND RECTIFIER MEANS CONNECTED BETWEEN SAID OTHER END OF SAID SECOND COIL MEANS AND A SECOND TERMINAL OF SAID METER MEANS.
Claim 2
Dependent Claim
160 words
APPARATUS FOR TESTING THE TUBE WALL THICKNESS OF NONMAGNETIC MATERIAL, COMPRISING A PROBE ADAPTED TO BE INSERTED WITHIN THE TUBE AND HAVING A PAIR OF AXIALLY ALIGNED CORES, A NON-MAGNETIC SPACER EXTENDING BETWEEN SAID CORES, COIL MEANS WOUND ON EACH CORE WITH THE FIRST COIL MEANS HAVING A TOTAL RESISTANCE MANY TIMES THE SECOND COIL MEANS; MEANS CONNECTING SAID FIRST COIL MEANS ACROSS A SOURCE OF ALTERNATING CURRENT; METER MEANS; A POTENTIOMETER CONNECTED BETWEEN ONE SIDE OF SAID FIRST COIL MEANS AND ONE SIDE OF THE ALTERNATING CURRENT SOURCE WITH THE SLIDING TAP THEREOF BEING CONNECTED TO A FIRST TERMINAL OF SAID METER MEANS; MEANS CONNECTING ONE END OF SAID SECOND COIL MEANS TO SAID FIRST TERMINAL OF SAID METER, THE OTHER END OF SAID SECOND COIL MEANS BEING CONNECTED TO SAID ONE SIDE OF THE ALTERNATING CURRENT SOURCE; AND RECTIFIER MEANS CONNECTED BETWEEN SAID OTHER END OF SAID SECOND COIL MEANS AND A SECOND TERMINAL OF SAID METER MEANS.
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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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |