US3108213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position indicating devices
Assignee: United Kingdom Atomic Energy Authority
•
Filing: 1960-03-28
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Granted: 1963-10-22
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Expires: 1980-03-28
Abstract
No abstract record available.
Inventors
- 👤 Golder Jack Alexander
- 👤 Smart Richard
- 👤 Pendleton Joseph Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:38
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/10; G01; G01D; G01D5/00; G01D5/12; G01D5/125; G01D5/14; G01D5/20; G01D5/22; G01D5/2208; G01D5/2216; G21C17/12; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
IN COMBINATION WITH A POSITION INDICATING DEVICE OF THE KIND COMPRISING A MEMBER OF MAGNETIC MATERIAL MOVABLE IN DIFFERENTIALLY WOUND COILS TO GIVE AN ERROR SIGNAL FROM A BRIDGE CIRCUIT, INCLUDING SAID DIFFERENTIALLY WOUND COILS, WHEN THE MEMBER OF MAGNETIC MATERIAL AND SAID DIFFERENTIALLY WOUND COILS ARE UNSYMMETRICALLY DISPOSED WITH RESPECT TO ONE ANOTHER, MEANS FOR MOVING SAID DIFFERENTIALLY WOUND COILS SERVOWISE ACCORDING TO THE ERROR SIGNAL TO RESTORE THE COILS TO A POSITION SYMMETRICAL WITH THE MEMBER OF MAGNETIC MATERIAL, THE ADDED FEATURE OF A SECOND BALANCING BRIDGE CIRCUIT HAVING SAID DIFFERENTIALLY WOUND COILS TOGETHER AS ONE ARM THEREOF, SAID SECOND BALANCING BRIDGE CIRCUIT BEING BALANCED WHEN THE MEMBER OF MAGNETIC MATERIAL IS IN THE COILS AND UNBALANCED WHEN THE MEMBER OF MAGNETIC MATERIAL IS COMPLETELY OUTSIDE THE COILS, MEANS FOR DETECTING THE UNBALANCE IN SAID SECOND BALANCING BRIDGE CIRCUIT, AND MEANS FOR DRIVING THE COILS TO RESTORE BALANCE IN SAID SECOND BALANCING BRIDGE CIRCUIT.
Claim 2
Dependent Claim
156 words
IN COMBINATION WITH A POSITION INDICATING DEVICE OF THE KIND COMPRISING A MEMBER OF MAGNETIC MATERIAL MOVABLE IN DIFFERENTIALLY WOUND COILS TO GIVE AN ERROR SIGNAL FROM A BRIDGE CIRCUIT, INCLUDING SAID DIFFERENTIALLY WOUND COILS, WHEN THE MEMBER OF MAGNETIC MATERIAL AND SAID DIFFERENTIALLY WOUND COILS ARE UNSYMMETRICALLY DISPOSED WITH RESPECT TO ONE ANOTHER, MEANS FOR MOVING SAID DIFFERENTIALLY WOUND COILS SERVOWISE ACCORDING TO THE ERROR SIGNAL TO RESTORE THE COILS TO A POSITION SYMMETRICAL WITH THE MEMBER OF MAGNETIC MATERIAL, THE ADDED FEATURE OF A SECOND BALANCING BRIDGE CIRCUIT HAVING SAID DIFFERENTIALLY WOUND COILS TOGETHER AS ONE ARM THEREOF, SAID SECOND BALANCING BRIDGE CIRCUIT BEING BALANCED WHEN THE MEMBER OF MAGNETIC MATERIAL IS IN THE COILS AND UNBALANCED WHEN THE MEMBER OF MAGNETIC MATERIAL IS COMPLETELY OUTSIDE THE COILS, MEANS FOR DETECTING THE UNBALANCE IN SAID SECOND BALANCING BRIDGE CIRCUIT, AND MEANS FOR DRIVING THE COILS TO RESTORE BALANCE IN SAID SECOND BALANCING BRIDGE CIRCUIT.
References Cited (Backward Citations)
US2349963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |