US3182231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet pole cap construction
Assignee: Varian Medical Systems Inc
•
Filing: 1960-09-26
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Granted: 1965-05-04
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Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Robert E Gang
- 👤 Forrest A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:03
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/28; G01R33/38; G01R33/387; G01R33/3873
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A MAGNET HAVING TWO POLE MEMBERS FORMING AN AIR GAP, A CIRCULAR POLE CAP MOUNTED ON THE FACE OF AT LEAST ONE OF SAID MEMBERS, SAID POLE CAP HAVING AN AXIALLY ALIGNED HOLLOW CYLINDRICAL RECESS IN THE SURFACE ADJACENT TO SAID MEMBER FOR INCREASING THE HOMOGENEITY OF THE MAGNETIC FIELD IN THE AIR GAP, AND MEANS FOR ADJUSTING THE SIZE OF SAID RECESS WHEREBY A HIGHLY HOMOGENEOUS MAGNETIC FIELD IS PROVIDED IN THE AIR GAP.
Claim 2
Dependent Claim
75 words
A MAGNET HAVING TWO POLE MEMBERS FORMING AN AIR GAP, A CIRCULAR POLE CAP MOUNTED ON THE FACE OF AT LEAST ONE OF SAID MEMBERS, SAID POLE CAP HAVING AN AXIALLY ALIGNED HOLLOW CYLINDRICAL RECESS IN THE SURFACE ADJACENT TO SAID MEMBER FOR INCREASING THE HOMOGENEITY OF THE MAGNETIC FIELD IN THE AIR GAP, AND MEANS FOR ADJUSTING THE SIZE OF SAID RECESS WHEREBY A HIGHLY HOMOGENEOUS MAGNETIC FIELD IS PROVIDED IN THE AIR GAP.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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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) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |