Patent US3296569A successfully refreshed from Google Patents.
US3296569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet assembly capable of controlling distribution of magnetic field
Assignee: Mitsubishi Steel Mfg Co Ltd
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Filing: 1962-08-27
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Granted: 1967-01-03
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Ikegami Hidetsugu
- 👤 Momota Teruo
- 👤 Takekoshi Eiko
- 👤 Matumoto Zyun-Itiro
- 👤 Goto Masayuki
- 👤 Shimoji Sadao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:01
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/44; H01J49/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A MAGNET ASSEMBLY FOR CONTROLLING A DISTRIBUTION OF MAGNETIC FIELD, INCLUDING A PAIR OF SPACED POLE PIECES FOR PRODUCING A DESIRED DISTRIBUTION OF MAGNETIC FIELD THEREBETWEEN, A PLURALITY OF MAGNET STEEL MEMBERS COUPLED IN MAGNETICALLY PARALLEL RELATIONSHIP TO EACH OF SAID POLE PIECES, A MAGNETIC YOKE MEMBER MAGNETICALLY COUPLED TO SAID PLURALITY OF MAGNET STEEL MEMBERS, AND A PLURALITY OF ELONGATED MAGNET ELEMENT INTRODUCIBLE AXIALLY INTO DESIRED REGIONS BETWEEN SAID MAGNETIC YOKE MEMBER AND SAID POLE PIECES AND EACH CONTROLLABLE AS TO THE EXTENT OF AXIAL INTRODUCTION INTO SAID REGIONS, THE MAGNET ELEMENTS BEING ARRANGED SUCH THAT BY POSITION AND EXTENT OF INTRODUCTION OF EACH MAGNET ELEMENT INTO A RESPECTIVE REGION THE DESIRED DISTRIBUTION OF MAGNETIC FIELD BETWEEN SAID PAIR OF MAGNETIC POLE PIECES IS LOCALLY CONTROLLED TO PROVIDE THE DESIRED DISTRIBUTION OF MAGNETIC FIELD BETWEEN SAID MAGNETIC POLE PIECES.
Claim 2
Dependent Claim
140 words
A MAGNET ASSEMBLY FOR CONTROLLING A DISTRIBUTION OF MAGNETIC FIELD, INCLUDING A PAIR OF SPACED POLE PIECES FOR PRODUCING A DESIRED DISTRIBUTION OF MAGNETIC FIELD THEREBETWEEN, A PLURALITY OF MAGNET STEEL MEMBERS COUPLED IN MAGNETICALLY PARALLEL RELATIONSHIP TO EACH OF SAID POLE PIECES, A MAGNETIC YOKE MEMBER MAGNETICALLY COUPLED TO SAID PLURALITY OF MAGNET STEEL MEMBERS, AND A PLURALITY OF ELONGATED MAGNET ELEMENT INTRODUCIBLE AXIALLY INTO DESIRED REGIONS BETWEEN SAID MAGNETIC YOKE MEMBER AND SAID POLE PIECES AND EACH CONTROLLABLE AS TO THE EXTENT OF AXIAL INTRODUCTION INTO SAID REGIONS, THE MAGNET ELEMENTS BEING ARRANGED SUCH THAT BY POSITION AND EXTENT OF INTRODUCTION OF EACH MAGNET ELEMENT INTO A RESPECTIVE REGION THE DESIRED DISTRIBUTION OF MAGNETIC FIELD BETWEEN SAID PAIR OF MAGNETIC POLE PIECES IS LOCALLY CONTROLLED TO PROVIDE THE DESIRED DISTRIBUTION OF MAGNETIC FIELD BETWEEN SAID MAGNETIC POLE PIECES.
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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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |