US3150295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnet with adjustable air gap
Assignee: Varian Medical Systems Inc
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Filing: 1962-01-15
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Granted: 1964-09-22
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Expires: 1982-01-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Kane
- 👤 Forrest A Nelson
- 👤 Emery H Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:45
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/20; H01F7/202
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN ELECTROMAGNET COMPRISING A SUBSTANTIALLY USHAPED YOKE, THE TWO LEGS OF WHICH HAVE MUTUALLY ALIGNED BORES THERETHROUGH, A PAIR OF HOLLOW, CYLINDRICAL, OPENENDED SLEEVES EXTENDING THROUGH THE BORES, A PAIR OF ENERGIZING COILS EACH SECURED OVER AN ASSOCIATED ONE OF SAID SLEEVES, A PAIR OF CYLINDRICAL POLE MEMBERS EXTENDING THROUGH THE SLEEVES AND FORMING AN AIR GAP BETWEEN THEIR INNER ENDS, THE OUTER ENDS OF THE POLE MEMBERS BEING THREADED, ADJUSTING NUTS THREADED OVER THE OUTER ENDS OF THE TWO POLE MEMBERS, MEANS FOR SECURING SAID ADJUSTING NUTS TO SAID YOKE WHEREBY SAID ADJUSTING NUTS MAY ONLY
Claim 2
Dependent Claim
97 words
AN ELECTROMAGNET COMPRISING A SUBSTANTIALLY USHAPED YOKE, THE TWO LEGS OF WHICH HAVE MUTUALLY ALIGNED BORES THERETHROUGH, A PAIR OF HOLLOW, CYLINDRICAL, OPENENDED SLEEVES EXTENDING THROUGH THE BORES, A PAIR OF ENERGIZING COILS EACH SECURED OVER AN ASSOCIATED ONE OF SAID SLEEVES, A PAIR OF CYLINDRICAL POLE MEMBERS EXTENDING THROUGH THE SLEEVES AND FORMING AN AIR GAP BETWEEN THEIR INNER ENDS, THE OUTER ENDS OF THE POLE MEMBERS BEING THREADED, ADJUSTING NUTS THREADED OVER THE OUTER ENDS OF THE TWO POLE MEMBERS, MEANS FOR SECURING SAID ADJUSTING NUTS TO SAID YOKE WHEREBY SAID ADJUSTING NUTS MAY ONLY
References Cited (Backward Citations)
US2819431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |