US3308349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic field stabilization
Assignee: Individual
•
Filing: 1964-03-13
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Granted: 1967-03-07
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Expires: 1984-03-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas I Kirkpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:14
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/202; H01F7/204; G; G05; G05F; G05F7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
IN A MAGNETIC FIELD STABILIZER, THE COMBINATION OF: MEANS FOR PRODUCING A PRIMARY MAGNETIC FIELD; A SENSING WINDING; MEANS COUPLING THE SENSING WINDING AND THE PRIMARY MAGNETIC FIELD SO THAT A CHANGE IN THE MAGNITUDE OF THE PRIMARY MAGNETIC FIELD INDUCES AN ERROR SIGNAL IN THE SENSING WINDING; A BUCKING WINDING; MEANS COUPLING THE BUCKING WINDING AND THE PRIMARY MAGNETIC FIELD, WHEREBY A CURRENT FLOW THROUGH THE BUCKING WINDING PRODUCES A BUCKING MAGNETIC FIELD, AND THE MAGNETIC FIELD STABILIZER HAS A TOTAL MAGNETIC FIELD WHICH IS THE ALGEBRAIC SUM OF THE PRIMARY FIELD AND BUCKING FIELD; MEANS FOR CONTROLLING THE FLOW OF CURRENT THROUGH THE BUCKING WINDING IN RESPONSE TO THE ERROR SIGNAL SO THAT, UPON A CHANGE IN THE MAGNITUDE OF THE PRIMARY MAGNETIC FIELD, A COMPLEMENTARY CHANGE IN THE BUCKING MAGNETIC FIELD IS INDUCED BY CURRENT FLOWING IN THE BUCKING WINDING; AND MEANS COUPLING THE BUCKING WINDING AND THE SENSING WINDING SO THAT A CHANGE IN THE CURRENT FLOW THROUGH THE BUCKING WINDING INDUCES A FEEDBACK SIGNAL IN THE SENSING WINDING WHICH OPPOSES THE ERROR SIGNAL.
Claim 2
Dependent Claim
178 words
IN A MAGNETIC FIELD STABILIZER, THE COMBINATION OF: MEANS FOR PRODUCING A PRIMARY MAGNETIC FIELD; A SENSING WINDING; MEANS COUPLING THE SENSING WINDING AND THE PRIMARY MAGNETIC FIELD SO THAT A CHANGE IN THE MAGNITUDE OF THE PRIMARY MAGNETIC FIELD INDUCES AN ERROR SIGNAL IN THE SENSING WINDING; A BUCKING WINDING; MEANS COUPLING THE BUCKING WINDING AND THE PRIMARY MAGNETIC FIELD, WHEREBY A CURRENT FLOW THROUGH THE BUCKING WINDING PRODUCES A BUCKING MAGNETIC FIELD, AND THE MAGNETIC FIELD STABILIZER HAS A TOTAL MAGNETIC FIELD WHICH IS THE ALGEBRAIC SUM OF THE PRIMARY FIELD AND BUCKING FIELD; MEANS FOR CONTROLLING THE FLOW OF CURRENT THROUGH THE BUCKING WINDING IN RESPONSE TO THE ERROR SIGNAL SO THAT, UPON A CHANGE IN THE MAGNITUDE OF THE PRIMARY MAGNETIC FIELD, A COMPLEMENTARY CHANGE IN THE BUCKING MAGNETIC FIELD IS INDUCED BY CURRENT FLOWING IN THE BUCKING WINDING; AND MEANS COUPLING THE BUCKING WINDING AND THE SENSING WINDING SO THAT A CHANGE IN THE CURRENT FLOW THROUGH THE BUCKING WINDING INDUCES A FEEDBACK SIGNAL IN THE SENSING WINDING WHICH OPPOSES THE ERROR SIGNAL.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |