US3879754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic field producing apparatus
Assignee: Northrop Grumman Innovation Systems LLC
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Filing: 1973-11-29
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Granted: 1975-04-22
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Expires: 1993-11-29
Abstract
Abstract A magnetic field producing structure has a pair of U-shaped elongated core members with the end faces of the legs of one of the core members arranged in a confronting relationship across a predetermined gap with the end faces of the legs of the other one of the core members. A first winding on each of the core members is wrapped around the trough of each of the core members. A source of alternating current is arranged to serially energize the first windings on both of the core members. A second winding is located on each of the core members and is wrapped around the corresponding core member at right angles to the first winding. A direct current source is arranged to serially energize the second windings on the core members.
Inventors
- 👤 Dale O Ballinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:22
CPC Classifications
H; H01; H01F; H01F13/00; G; G01; G01R; G01R33/00; G01R33/12; G11; G11B; G11B5/00; G11B5/02; G11B5/027; G11B5/03; G11C; G11C19/00; G11C19/02; G11C19/08; G11C19/085
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A magnetic field producing apparatus comprising a first U-shaped core member; a second U-shaped core member, said first core member having leg end faces spaced a predetermined distance from confronting leg end faces of said second core member; a first winding wound on the trough of said first core member; a second winding wound on the trough of said second core member; a first energizing means arranged to serially energize said first and second windings; a third winding wound around said first core member at right angles to said first winding; a fourth winding wound around said second core member at right angles to said second winding, and a second energizing means arranged to serially energize said third and fourth windings.
Claim 2
Dependent Claim
121 words
A magnetic field producing apparatus comprising a first U-shaped core member; a second U-shaped core member, said first core member having leg end faces spaced a predetermined distance from confronting leg end faces of said second core member; a first winding wound on the trough of said first core member; a second winding wound on the trough of said second core member; a first energizing means arranged to serially energize said first and second windings; a third winding wound around said first core member at right angles to said first winding; a fourth winding wound around said second core member at right angles to said second winding, and a second energizing means arranged to serially energize said third and fourth windings.
Claim 3
Dependent Claim
121 words
A magnetic field producing apparatus comprising a first Ushaped core member; a second U-shaped core member, said first core member having leg end faces spaced a predetermined distance from confronting leg end faces of said second core member; a first winding wound on the trough of said first core member; a second winding wound on the trough of said second core member; a first energizing means arranged to serially energize said first and second windings; a third winding wound around said first core member at right angles to said first winding; a fourth winding wound around said second core member at right angles to said second winding, and a second energizing means arranged to serially energize said third and fourth windings.
Claim 4
Dependent Claim
121 words
A magnetic field producing apparatus comprising a first Ushaped core member; a second U-shaped core member, said first core member having leg end faces spaced a predetermined distance from confronting leg end faces of said second core member; a first winding wound on the trough of said first core member; a second winding wound on the trough of said second core member; a first energizing means arranged to serially energize said first and second windings; a third winding wound around said first core member at right angles to said first winding; a fourth winding wound around said second core member at right angles to said second winding, and a second energizing means arranged to serially energize said third and fourth windings.
Claim 5
Dependent Claim
22 words
A magnetic field producing apparatus as set forth in claim 1 wherein said first energizing means is a source of alternating current.
Claim 6
Dependent Claim
22 words
A magnetic field producing apparatus as set forth in claim 2 wherein said second energizing means is a source of direct current.
References Cited (Backward Citations)
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US2550753A
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US2908768A
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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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |