US3702450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit steering coils
Assignee: United States Atomic Energy Commission
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Filing: 1971-05-11
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Granted: 1972-11-07
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Expires: 1991-05-11
Abstract
Abstract A printed circuit steering coil on a flexible board for producing a charged particle beam deflecting magnetic field wherein rectangular, continuous planar spiral coils are etched on the circuit board opposite sides such that as each of at least two boards are bent into cylindrical shapes and disposed interiorly in a steel tube of high permeability permitting beam passage, the coils provide for individual horizontal and vertical steering of the charged particles.
Inventors
- 👤 Robert T Avery
- 👤 Glen R Lambertson
- 👤 Chester D Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:42
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/72; H01J29/76; H01J29/768; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/041; H01F41/06; H01F41/071; H01F2041/0711
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
247 words
A printed circuit coil unit for steering charged particle beams comprising: an elongated generally rectangular flexible printed circuit board; a first rectangular spiral coil portion disposed on a front side of a first half of said circuit board and terminating at a first midpoint thereon, said coil portion having a first turn beginning at a terminal at a first side and continuing near the midplane across said board; a second rectangular spiral coil portion disposed on the reverse side of the first half of said circuit board, being wound outwardly in the same sense as the first coil portion from a second midpoint thereon and having a last turn extending in proximity to the second side of said circuit board to terminate at the midplane, said first and second midpoints being interconnected; a third rectangular spiral coil portion disposed on the reverse side of the second half of said circuit board terminating at a third midpoint thereon and beginning with a turn connected to the terminus of the second coil portion at the midplane and extending in proximity to the second side of said circuit board; and a fourth rectangular spiral coil portion disposed on the front side of the second half of said circuit board being wound outwardly from a fourth midpoint thereon and having a last turn extending in proximity to the midplane across said circuit board to terminate in a second terminal thereon, said third and fourth midpoints being interconnected, wherefor the circuit board.
Claim 2
Dependent Claim
247 words
A printed circuit coil unit for steering charged particle beams comprising: an elongated generally rectangular flexible printed circuit board; a first rectangular spiral coil portion disposed on a front side of a first half of said circuit board and terminating at a first midpoint thereon, said coil portion having a first turn beginning at a terminal at a first side and continuing near the midplane across said board; a second rectangular spiral coil portion disposed on the reverse side of the first half of said circuit board, being wound outwardly in the same sense as the first coil portion from a second midpoint thereon and having a last turn extending in proximity to the second side of said circuit board to terminate at the midplane, said first and second midpoints being interconnected; a third rectangular spiral coil portion disposed on the reverse side of the second half of said circuit board terminating at a third midpoint thereon and beginning with a turn connected to the terminus of the second coil portion at the midplane and extending in proximity to the second side of said circuit board; and a fourth rectangular spiral coil portion disposed on the front side of the second half of said circuit board being wound outwardly from a fourth midpoint thereon and having a last turn extending in proximity to the midplane across said circuit board to terminate in a second terminal thereon, said third and fourth midpoints being interconnected, wherefor the circuit board.
Claim 3
Dependent Claim
46 words
The printed circuit coil for steering charged particle beams as defined in claim 1 wherein said flexible printed circuit board is rolled into a cylinder with the second and third center points diametrically opposed to define a passageway for pAssage of said charged particle beam therethrough.
Claim 4
Dependent Claim
67 words
The printed circuit coil for steering charged particle beam defined in claim 1 further defined in that said first and second center points, and said third and fourth center points are spatially opposite each other on said printed circuit board in order that said electrical interconnection are made by inserting an electrical connector through a hole drilled through said center points location on said printed circuit board.
Claim 5
Dependent Claim
52 words
The printed circuit coil for steering charged particle beam defined in claim 3 further defined in that said flexible printed circuit board rolled into a cylinder is further surrounded by a steel pipe of high permeability to further enhance said charged particle steering, said circuit board and steel pipe separated by insulation.
Claim 6
Dependent Claim
75 words
The printed circuit coil for steering charged particle beam defined in claim 4 further defined in that at least one printed circuit board is placed within said steel pipe for horizontal charged particle steering and at least one printed circuit board is place within said steel pipe for vertical charged particle steering, said horizontal steering printed circuit board rotated 90* from said vertical steering printed circuit board in spatial arrangement, and separated by electrical insulation.
Claim 7
Dependent Claim
52 words
The printed circuit coil for steering charged particle beam defined in claim 5 further defined in that a multiplicity of printed circuit boards are placed within said steel pipe for horizontal charged particle steering and a multiplicity of printed circuit boards are placed within said steel pipe for vertical charged particle steering.
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |