US3302146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary armature flux shifting device
Assignee: ABB Inc USA
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Filing: 1965-03-02
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Granted: 1967-01-31
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Expires: 1985-03-02
Abstract
No abstract record available.
Inventors
- 👤 Stanley E Zocholl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/32; H01H71/321; H01H71/323; H01F; H01F29/00; H01F29/14; H01F29/143; H01F7/00; H01F7/06; H01F7/08; H01F7/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A MAGNETIC LATCH STRUCTURE COMPRISING AN ARMATURE OF MAGNETIC MATERIAL AND A MAGNET STRUCTURE; SAID MAGNET STRUCTURE COMPRISING A FIRST CLOSED MAGNETIC PATH INCLUDING A PAIR OF SPACED POLE FACES AND A SOURCE OF UNIDIRECTIONAL MAGNETIC FLUX, AND A SECOND CLOSED MAGNETIC PATH INCLUDING A VARIABLE SOURCE OF AMPERE TURNS AND SAID PAIR OF SPACED POLE FACES; SAID SECOND CLOSED MAGNETIC PATH HAVING A HIGHER MAGNETIC RELUCTANCE THAN SAID FIRST CLOSED MAGNETIC CIRCUIT; SAID ARMATURE COMPRISING A ROTATABLE BODY OF MAGNETIC MATERIAL HAVING A PAIR OF DIAMETRICALLY OPPOSITE POLE FACES; PIVOTAL MOUNTING MEANS CONNECTED TO A CENTRAL PORTION OF SAID ARMATURE; SAID ARMATURE BEING DISPOSED BETWEEN SAID PAIR OF SPACED POLE FACES OF SAID MAGNET STRUCTURE; SAID PAIR OF DIAMETRICALLY OPPOSITE POLE FACES OF SAID ARMATURE ENGAGING RESPECTIVE POLE FACES OF SAID SPACED POLE FACES; SAID ARMATURE BEING ROTATABLE ABOUT THE SAID PIVOTAL MOUNTING MEANS TO MOVE SAID PAIR OF DIAMETRICALLY OPPOSITE POLE FACES AWAY FROM THEIR SAID RESPECTIVE SPACED POLE FACES; AND A SECOND PAIR OF DIAMETRICALLY OPPOSED POLE FACES ON SAID ARMATURE; SAID SECOND PAIR OF POLE FACES BEING MOVABLE INTO ENGAGEMENT WITH RESPECTIVE POLE FACES OF SAID SPACED POLE FACES WHEN SAID PAIR OF DIAMETRICALLY OPPOSED POLE FACES MOVE AWAY FROM SAID SPACES POLE FACES OF SAID MAGNET.
Claim 2
Dependent Claim
211 words
A MAGNETIC LATCH STRUCTURE COMPRISING AN ARMATURE OF MAGNETIC MATERIAL AND A MAGNET STRUCTURE; SAID MAGNET STRUCTURE COMPRISING A FIRST CLOSED MAGNETIC PATH INCLUDING A PAIR OF SPACED POLE FACES AND A SOURCE OF UNIDIRECTIONAL MAGNETIC FLUX, AND A SECOND CLOSED MAGNETIC PATH INCLUDING A VARIABLE SOURCE OF AMPERE TURNS AND SAID PAIR OF SPACED POLE FACES; SAID SECOND CLOSED MAGNETIC PATH HAVING A HIGHER MAGNETIC RELUCTANCE THAN SAID FIRST CLOSED MAGNETIC CIRCUIT; SAID ARMATURE COMPRISING A ROTATABLE BODY OF MAGNETIC MATERIAL HAVING A PAIR OF DIAMETRICALLY OPPOSITE POLE FACES; PIVOTAL MOUNTING MEANS CONNECTED TO A CENTRAL PORTION OF SAID ARMATURE; SAID ARMATURE BEING DISPOSED BETWEEN SAID PAIR OF SPACED POLE FACES OF SAID MAGNET STRUCTURE; SAID PAIR OF DIAMETRICALLY OPPOSITE POLE FACES OF SAID ARMATURE ENGAGING RESPECTIVE POLE FACES OF SAID SPACED POLE FACES; SAID ARMATURE BEING ROTATABLE ABOUT THE SAID PIVOTAL MOUNTING MEANS TO MOVE SAID PAIR OF DIAMETRICALLY OPPOSITE POLE FACES AWAY FROM THEIR SAID RESPECTIVE SPACED POLE FACES; AND A SECOND PAIR OF DIAMETRICALLY OPPOSED POLE FACES ON SAID ARMATURE; SAID SECOND PAIR OF POLE FACES BEING MOVABLE INTO ENGAGEMENT WITH RESPECTIVE POLE FACES OF SAID SPACED POLE FACES WHEN SAID PAIR OF DIAMETRICALLY OPPOSED POLE FACES MOVE AWAY FROM SAID SPACES POLE FACES OF SAID MAGNET.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |