US3351850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-magnetic pickofp devices
Assignee: —
•
Filing: —
•
Granted: 1967-11-07
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Expires: 1984-11-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:01
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/08; H01F29/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN ELECTROMAGNETIC PICKOFF DEVICE INCLUDING A STATOR, AN ARMATURE MOUNTED FROM THE STATOR FOR STRAIGHT-LINE MOVEMENT WITH RESPECT TO THE STATOR, THE STATOR HAVING TWO PAIRS OF SALIENT POLES DISPOSED SO THAT THE TWO POLES OF EACH PAIR FACE ONE ANOTHER ACROSS THE AXIS OF MOVEMENT OF THE ARMATURE, THE ARMATURE IN THE REGION OF EACH STATOR POLE PAIR HAVING TWO SALIENT POLES TO COOPERATE WITH THOSE TWO STATOR POLES, A WINDING FOR EACH STATOR POLE, MEANS FOR ENERGISING THOSE WINDINGS FROM A SOURCE OF ALTERNATING VOLTAGE, AND INTERCONNECTIONS BETWEEN THOSE WINDINGS FOR DERIVING AN OUTPUT VOLTAGE WHICH IS DEPENDENT IN AMPLITUDE AND PHASE WITH RESPECT TO THE SOURCE VOLTAGE ON THE EXTENT AND DIRECTION OF THE MOVEMENT OF THE ARMATURE OVER A RESTRICTED RANGE FROM A DATUM POSITION WITH RESPECT TO THE STATOR.
Claim 2
Dependent Claim
134 words
AN ELECTROMAGNETIC PICKOFF DEVICE INCLUDING A STATOR, AN ARMATURE MOUNTED FROM THE STATOR FOR STRAIGHT-LINE MOVEMENT WITH RESPECT TO THE STATOR, THE STATOR HAVING TWO PAIRS OF SALIENT POLES DISPOSED SO THAT THE TWO POLES OF EACH PAIR FACE ONE ANOTHER ACROSS THE AXIS OF MOVEMENT OF THE ARMATURE, THE ARMATURE IN THE REGION OF EACH STATOR POLE PAIR HAVING TWO SALIENT POLES TO COOPERATE WITH THOSE TWO STATOR POLES, A WINDING FOR EACH STATOR POLE, MEANS FOR ENERGISING THOSE WINDINGS FROM A SOURCE OF ALTERNATING VOLTAGE, AND INTERCONNECTIONS BETWEEN THOSE WINDINGS FOR DERIVING AN OUTPUT VOLTAGE WHICH IS DEPENDENT IN AMPLITUDE AND PHASE WITH RESPECT TO THE SOURCE VOLTAGE ON THE EXTENT AND DIRECTION OF THE MOVEMENT OF THE ARMATURE OVER A RESTRICTED RANGE FROM A DATUM POSITION WITH RESPECT TO THE STATOR.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |