US3717835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical coil
Assignee: Individual
•
Filing: 1970-02-24
•
Granted: 1973-02-20
•
Expires: 1990-02-24
Abstract
Abstract An electrical coil having a strand of conductive material formed into a series of loops lying substantially in the same plane to produce a field substantially perpendicular to the plane.
Inventors
- 👤 W Roadstrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:00
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/06; H01F30/08; H01F17/00; H01F17/0006; H01F17/0033; H01F29/00; H01F29/08; H01F29/12; H01F5/00; H01F2017/004
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
69 words
An electrical coil, comprising a. a strand of conductive material formed into a series of loops lying substantially in the same plane to produce a field substantially perpendicular to the plane, each loop overlapping the loop preceding it and the loop following it in the series, the center lines of the loops lying in a straight line, and b. means insulating the strand from itself at points of crossing.
Claim 2
Dependent Claim
69 words
An electrical coil, comprising a. a strand of conductive material formed into a series of loops lying substantially in the same plane to produce a field substantially perpendicular to the plane, each loop overlapping the loop preceding it and the loop following it in the series, the center lines of the loops lying in a straight line, and b. means insulating the strand from itself at points of crossing.
Claim 3
Dependent Claim
69 words
An electrical coil, comprising a. a strand of conductive material formed into a series of loops lying substantially in the same plane to produce a field substantially perpendicular to the plane, each loop overlapping the loop preceding it and the loop following it in the series, the center lines of the loops lying in a straight line, and b. means insulating the strand from itself at points of crossing.
Claim 4
Dependent Claim
69 words
An electrical coil, comprising a. a strand of conductive material formed into a series of loops lying substantially in the same plane to produce a field substantially perpendicular to the plane, each loop overlapping the loop preceding it and the loop following it in the series, the center lines of the loops lying in a straight line, and b. means insulating the strand from itself at points of crossing.
Claim 5
Dependent Claim
21 words
An electrical coil as recited in claim 1, wherein the series of loops is encapsulated in a flat plate of plastic.
Claim 6
Dependent Claim
14 words
An electrical coil as recited in claim 1, wherein a core envelops the series.
Claim 7
Dependent Claim
22 words
An electrical coil as recited in claim 1, wherein the series is associated with another similar series lying in a spaced plane.
Claim 8
Dependent Claim
27 words
An electrical coil as recited in claim 4, wherein the two series lie on opposite sides of an electron-stream device for the purpose of controlling the stream.
Claim 9
Dependent Claim
28 words
An electrical coil as recited in claim 4, wherein a shielding element is mounted between the two series to permit an adjustment of the mutual inductance between them.
Claim 10
Dependent Claim
31 words
An electrical coil as recited in claim 4, wherein a core extends between the two series, and wherein the number of coils in the series are selected to provide a transformer.
Claim 11
Dependent Claim
18 words
An electric coil as recited in claim 1, wherein each loop is in the shape of a polygon.
References Cited (Backward Citations)
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US1661953A
Cited
GB286047A
Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |