Patent US3240965A successfully refreshed from Google Patents.
US3240965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic motor for a data indicator
Assignee: Patent Button Co
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Filing: 1964-07-07
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Granted: 1966-03-15
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 Robert F Casey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:40
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/22; G08B5/24; G08B5/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN AN ELECTROMAGNETIC INDICATOR OF THE TYPE UTILIZING A STATOR HAVING ELECTRICALLY ENERGIZABLE WINDINGS MOUNTED UPON AN ANNULAR CORE OF SELECTIVELY ESTABLISHING A PLURALITY OF DISCRETELY ORIENTED MAGNETIC FIELDS, AND A ROTOR HAVING A SALIENT POLE MAGNET MOUNTED TO PIVOT WITHIN THE ANNULAR CORE WHEREBY THE MAGNET ROTATES INTO ALIGNMENT WITH THE MAGNETIC FIELD ESTABLISHED BY THE STATOR, THE IMPROVEMENT WHEREIN THE CORE OF THE STATOR COMPRISES A PAIR OF MAGNETICALLY PERMEABLE ANNULAR ELEMENTS AND A RING OF MAGNETICALLY PERMEABLE MATERIAL CONCENTRIC WITH AND CONTIGUOUS TO THE PAIR OF ANNULAR ELEMENTS THE RING HAVING TEETH PROTRUDING RADIALLY INWARDLY BEYOND THE PAIR OF ANNULAR ELEMENTS AND THE RELATIONSHIP OF THE TEETH TO THE DISCRETELY ORIENTED MAGNETIC FIELDS BEING SUCH THAT A DIFFERENT TOOTH IS CLOSEST TO BUT OFFSET FROM A SALIENT POLE OF THE MAGNET FOR EACH ALIGNED POSITION THAT THE MAGNETIC ASSUMES IN RESPONSE TO THE MAGNETIC FIELDS ESTABLISHED BY ENERGIZATION OF THE STATOR''S WINDINGS.
Claim 2
Dependent Claim
155 words
IN AN ELECTROMAGNETIC INDICATOR OF THE TYPE UTILIZING A STATOR HAVING ELECTRICALLY ENERGIZABLE WINDINGS MOUNTED UPON AN ANNULAR CORE OF SELECTIVELY ESTABLISHING A PLURALITY OF DISCRETELY ORIENTED MAGNETIC FIELDS, AND A ROTOR HAVING A SALIENT POLE MAGNET MOUNTED TO PIVOT WITHIN THE ANNULAR CORE WHEREBY THE MAGNET ROTATES INTO ALIGNMENT WITH THE MAGNETIC FIELD ESTABLISHED BY THE STATOR, THE IMPROVEMENT WHEREIN THE CORE OF THE STATOR COMPRISES A PAIR OF MAGNETICALLY PERMEABLE ANNULAR ELEMENTS AND A RING OF MAGNETICALLY PERMEABLE MATERIAL CONCENTRIC WITH AND CONTIGUOUS TO THE PAIR OF ANNULAR ELEMENTS THE RING HAVING TEETH PROTRUDING RADIALLY INWARDLY BEYOND THE PAIR OF ANNULAR ELEMENTS AND THE RELATIONSHIP OF THE TEETH TO THE DISCRETELY ORIENTED MAGNETIC FIELDS BEING SUCH THAT A DIFFERENT TOOTH IS CLOSEST TO BUT OFFSET FROM A SALIENT POLE OF THE MAGNET FOR EACH ALIGNED POSITION THAT THE MAGNETIC ASSUMES IN RESPONSE TO THE MAGNETIC FIELDS ESTABLISHED BY ENERGIZATION OF THE STATOR''S WINDINGS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |