Patent US3293480A successfully refreshed from Google Patents.
US3293480A
Expired / Lapsed
US
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Pole piece and collector assembly for high frequency electron discharge device with cooling ribs
Assignee: Varian Medical Systems Inc
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Filing: 1963-05-24
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Granted: 1966-12-20
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 Elden G Green
- 👤 Zitelli Louis Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:03
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/02; H01J23/027; H01J23/033; H01J19/00; H01J19/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A COLLECTOR STRUCTURE FOR A HIGH FREQUENCY ELECTRON DISCHARGE DEVICE COMPRISING, A CUP-SHAPED POLE PIECE MEMBER OF MAGNETIC MATERIAL, A THERMALLY CONDUCTIVE COLLECTOR CORE MEMBER DISPOSED WITHIN AND IN D.C. ISOLATION WITH SAID CUP-SHAPED POLE PIECE MEMBER, SAID CORE MEMBER BEING SUPPORTED ON AND MECHANICALLY ATTACHED TO SAID POLE PIECE NUMBER BY MEANS OF AN INSULATING SUPPORT RING, SAID RING BEING LOCATED IN A TRANSVERSE PLANE, SAID TRANSVERSE PLANE TRAVERSING APPROXIMATELY THROUGH THE CENTER OF GRAVITY OF SAID CORE MEMBER, SAID DEVICE FURTHER INCLUDING A PLURALITY OF INSULATING MEMBERS POSITIONED NEAR ONE END OF SAID CORE MEMBER, SAID ONE END BEING DISPOSED WITHIN SAID POLE PIECE MEMBER, SAID PLURALITY OF INSULATING MEMBERS BEING DISPOSED RELATIVE TO SAID CORE MEMBER AND SAID POLE PIECE MEMBER SUCH THAT D.C. ELECTRICAL SHORTING BETWEEN SAID CORE MEMEBR AND SAID POLE PIECE MEMBER CANNOT OCCUR DUE TO RELATIVE DISPLACEMENT FORCES OCCURRING BETWEEN SAID CORE MEMBER AND SAID POLE PIECE MEMBER.
Claim 2
Dependent Claim
155 words
A COLLECTOR STRUCTURE FOR A HIGH FREQUENCY ELECTRON DISCHARGE DEVICE COMPRISING, A CUP-SHAPED POLE PIECE MEMBER OF MAGNETIC MATERIAL, A THERMALLY CONDUCTIVE COLLECTOR CORE MEMBER DISPOSED WITHIN AND IN D.C. ISOLATION WITH SAID CUP-SHAPED POLE PIECE MEMBER, SAID CORE MEMBER BEING SUPPORTED ON AND MECHANICALLY ATTACHED TO SAID POLE PIECE NUMBER BY MEANS OF AN INSULATING SUPPORT RING, SAID RING BEING LOCATED IN A TRANSVERSE PLANE, SAID TRANSVERSE PLANE TRAVERSING APPROXIMATELY THROUGH THE CENTER OF GRAVITY OF SAID CORE MEMBER, SAID DEVICE FURTHER INCLUDING A PLURALITY OF INSULATING MEMBERS POSITIONED NEAR ONE END OF SAID CORE MEMBER, SAID ONE END BEING DISPOSED WITHIN SAID POLE PIECE MEMBER, SAID PLURALITY OF INSULATING MEMBERS BEING DISPOSED RELATIVE TO SAID CORE MEMBER AND SAID POLE PIECE MEMBER SUCH THAT D.C. ELECTRICAL SHORTING BETWEEN SAID CORE MEMEBR AND SAID POLE PIECE MEMBER CANNOT OCCUR DUE TO RELATIVE DISPLACEMENT FORCES OCCURRING BETWEEN SAID CORE MEMBER AND SAID POLE PIECE MEMBER.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |