Patent US3235776A successfully refreshed from Google Patents.
US3235776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent magnet stabilizer system and method
Assignee: Indiana General Corp
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Filing: 1961-07-31
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Granted: 1966-02-15
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 James R Ireland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:19
CPC Classifications
H; H01; H01F; H01F13/00; H01F13/003; G; G05; G05F; G05F7/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
257 words
APPARATUS FOR ADJUSTING THE FIELD STRENGTH OF EACH OF A SUCCESSION OF PERMANENT MAGNETS FROM A RANGE OF INITIAL VALUES TO A PREDETERMINED STABILIZED VALUE LYING WITHIN A PREDETERMINED TOLERANCE RANGE COMPRISING MAGNETIC CORE HAVING A PAIR OF SPACED CONFRONTING POLAR FACES SEPARATED BY A NON-MAGNETIC GAP, MEANS FOR SUPPORTING EACH OF SAID PERMANENT MAGNETS IN SUCCESSION AT A FIXED MAGNET POSITION CENTRALLY WITHIN SAID NON-MAGNETIC GAP AND IN SPACED RELATION TO SAID POLAR FACES WITH NON-MAGNETIC MATERIAL ONLY SEPARATING SAID MAGNET POSITION FROM SAID POLAR FACES, WINDING MEANS ON SAID CORE FOR PRODUCING A MAGNETIC FIELD IN SAID NON-MAGNETIC GAP INTERSECTING SAID MAGNET POSITION, CAPACITANCE MEANS FOR FORMING AN OSCILLATORY ELECTRIC CIRCUIT WITH SAID WINDING MEANS, CAPACITANCE CHARGING MEANS FOR SUPPLYING A CHARGING CURRENT TO SAID CAPACITANCE MEANS, CONTACT MEANS FOR ALTERNATELY CONNECTING SAID CAPACITANCE MEANS EITHER WITH SAID CHARGING MEANS AND WITH SAID WINDING MEANS AND PROVIDING FOR AN ALTERNATING POLARITY DISCHARGE CURRENT THROUGH SAID WINDING MEANS OF SUCCESSIVELY OPPOSITE POLARITY AND DECAYING AMPLITUDE WHEN SAID CAPACITANCE MEANS IN CONNECTED WITH SAID WINDING MEANS, MAGNETIC FIELD MEASURING MEANS FOR MEASURING THE MAGNETIC FIELD STRENGTH OF SAID PERMANENT MAGNET IN SAID MAGNET POSITION COMPRISING A SEMI-CONDUCTOR BODY, MEANS MOUNTING SAID SEMICONDUCTOR BODY AT A FIXED POSITION CLOSELY ADJACENT SAID MAGNET POSITION AND WITHIN THE FIELD OF THE MAGNET AT SAID MAGNET POSITION AND RIGIDLY CONNECTING SAID SEMICONDUCTOR BODY WITH SAID MAGNETIC CORE, SAID CAPACITANCE CHARGING MEANS HAVING INCREMENTAL ADJUSTMENT MEANS ADJUSTABLE IN INCREMENTAL STEPS FOR INCREASING THE CHARGE SUPPLIED TO SAID CAPACITANCE MEANS, AND MANUALLY OPER-
Claim 2
Dependent Claim
257 words
APPARATUS FOR ADJUSTING THE FIELD STRENGTH OF EACH OF A SUCCESSION OF PERMANENT MAGNETS FROM A RANGE OF INITIAL VALUES TO A PREDETERMINED STABILIZED VALUE LYING WITHIN A PREDETERMINED TOLERANCE RANGE COMPRISING MAGNETIC CORE HAVING A PAIR OF SPACED CONFRONTING POLAR FACES SEPARATED BY A NON-MAGNETIC GAP, MEANS FOR SUPPORTING EACH OF SAID PERMANENT MAGNETS IN SUCCESSION AT A FIXED MAGNET POSITION CENTRALLY WITHIN SAID NON-MAGNETIC GAP AND IN SPACED RELATION TO SAID POLAR FACES WITH NON-MAGNETIC MATERIAL ONLY SEPARATING SAID MAGNET POSITION FROM SAID POLAR FACES, WINDING MEANS ON SAID CORE FOR PRODUCING A MAGNETIC FIELD IN SAID NON-MAGNETIC GAP INTERSECTING SAID MAGNET POSITION, CAPACITANCE MEANS FOR FORMING AN OSCILLATORY ELECTRIC CIRCUIT WITH SAID WINDING MEANS, CAPACITANCE CHARGING MEANS FOR SUPPLYING A CHARGING CURRENT TO SAID CAPACITANCE MEANS, CONTACT MEANS FOR ALTERNATELY CONNECTING SAID CAPACITANCE MEANS EITHER WITH SAID CHARGING MEANS AND WITH SAID WINDING MEANS AND PROVIDING FOR AN ALTERNATING POLARITY DISCHARGE CURRENT THROUGH SAID WINDING MEANS OF SUCCESSIVELY OPPOSITE POLARITY AND DECAYING AMPLITUDE WHEN SAID CAPACITANCE MEANS IN CONNECTED WITH SAID WINDING MEANS, MAGNETIC FIELD MEASURING MEANS FOR MEASURING THE MAGNETIC FIELD STRENGTH OF SAID PERMANENT MAGNET IN SAID MAGNET POSITION COMPRISING A SEMI-CONDUCTOR BODY, MEANS MOUNTING SAID SEMICONDUCTOR BODY AT A FIXED POSITION CLOSELY ADJACENT SAID MAGNET POSITION AND WITHIN THE FIELD OF THE MAGNET AT SAID MAGNET POSITION AND RIGIDLY CONNECTING SAID SEMICONDUCTOR BODY WITH SAID MAGNETIC CORE, SAID CAPACITANCE CHARGING MEANS HAVING INCREMENTAL ADJUSTMENT MEANS ADJUSTABLE IN INCREMENTAL STEPS FOR INCREASING THE CHARGE SUPPLIED TO SAID CAPACITANCE MEANS, AND MANUALLY OPER-
Claim 3
Independent Claim
139 words
THE METHOD OF ADJUSTING THE FIELD STRENGTH OF A MAGNETIZED PERMANENT WHICH IS THEREAFTER TO BE PLACED IN A UTILIZATION MAGNETIC CIRCUIT TO A PREDETERMINED STABILIZED VALUE WHICH COMPRISES POSITIONING THE MAGNET ITSELF WITHOUT SAID UTILIZATION MAGNETIC CIRCUIT IN FIXED RELATIONSHIP TO A MAGNETIC FIELD WITH THE FIELD OF THE MAGNET INTERSECTING THE MAGNETIC FIELD, ESTABLISHING AN OSCILLATORY MAGNETIC FIELD IMPINGING ON THE MAGNET OF PROGRESSIVELY DIMINISHING AMPLITUDE AND HAVING AT LEAST ONE REVERSAL OF POLARITY, SENSING THE MAGNETIC FIELD STRENGTH OF THE MAGNET AFTER SUBJECTION TO SAID OSCILLATORY MAGNETIC FIELD, OBSERVING THE SENSED FIELD STRENGTH, MANUALLY ADJUSTING THE AMPLITUDE OF A SUCCESSIVE OSCILLATORY MAGNETIC FIELD BASED ON THE SENSED FIELD STRENGTH, AND REAPEATING THE SUBJECTING, SENSING OBSERVING AND ADJUSTING STEPS WHICH SUCCESSIVELY HIGHER INITIAL AMPLITUDES OF THE OSCILLATORY MAGNETIC FIELD UNIT THE MAGNET REACHES SAID PREDETERMINED STABILIZED VALUE.
Claim 4
Independent Claim
139 words
THE METHOD OF ADJUSTING THE FIELD STRENGTH OF A MAGNETIZED PERMANENT WHICH IS THEREAFTER TO BE PLACED IN A UTILIZATION MAGNETIC CIRCUIT TO A PREDETERMINED STABILIZED VALUE WHICH COMPRISES POSITIONING THE MAGNET ITSELF WITHOUT SAID UTILIZATION MAGNETIC CIRCUIT IN FIXED RELATIONSHIP TO A MAGNETIC FIELD WITH THE FIELD OF THE MAGNET INTERSECTING THE MAGNETIC FIELD, ESTABLISHING AN OSCILLATORY MAGNETIC FIELD IMPINGING ON THE MAGNET OF PROGRESSIVELY DIMINISHING AMPLITUDE AND HAVING AT LEAST ONE REVERSAL OF POLARITY, SENSING THE MAGNETIC FIELD STRENGTH OF THE MAGNET AFTER SUBJECTION TO SAID OSCILLATORY MAGNETIC FIELD, OBSERVING THE SENSED FIELD STRENGTH, MANUALLY ADJUSTING THE AMPLITUDE OF A SUCCESSIVE OSCILLATORY MAGNETIC FIELD BASED ON THE SENSED FIELD STRENGTH, AND REAPEATING THE SUBJECTING, SENSING OBSERVING AND ADJUSTING STEPS WHICH SUCCESSIVELY HIGHER INITIAL AMPLITUDES OF THE OSCILLATORY MAGNETIC FIELD UNIT THE MAGNET REACHES SAID PREDETERMINED STABILIZED VALUE.
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |