Patent US4016519A successfully refreshed from Google Patents.
US4016519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed circuit coils
Assignee: Blaupunkt Werke GmbH
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Filing: 1976-05-14
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Granted: 1977-04-05
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Expires: 1996-05-14
Abstract
Abstract The conducting path width of a spiral printed circuit coil is reduced for the inside of the spiral coil to obtain more inductance in the same space without substantial sacrifice in Q. In another form of spiral coil with non-constant path width, the path width is reduced in a sector of the coil located between the inner and outer terminals to reduce the distance between terminals with minimum sacrifice in inductance or Q.
Inventors
- 👤 Dieter Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:04
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2804; H05; H05K; H05K1/00; H05K1/16; H05K1/165
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A printed circuit coil of spiral configuration on the surface of a plate of insulating material composed of a layer of conducting material in a continuous spiral path with a substantially constant spacing between adjacent turns thereof and incorporating the improvement wherein a sector of said spiral including a part of each complete turn passing thereacross is of smaller path width than the remainder of said spiral path.
Claim 2
Dependent Claim
68 words
A printed circuit coil of spiral configuration on the surface of a plate of insulating material composed of a layer of conducting material in a continuous spiral path with a substantially constant spacing between adjacent turns thereof and incorporating the improvement wherein a sector of said spiral including a part of each complete turn passing thereacross is of smaller path width than the remainder of said spiral path.
Claim 3
Dependent Claim
39 words
A printed circuit coil as defined in claim 1, in which the portion of said spiral path in said sector with smaller path width is located between contact areas (8,9) respectively connecting with the ends of said spiral path.
Claim 4
Dependent Claim
32 words
A printed circuit coil as defined in claim 2, in which the portion of each turn passing through said sector and between said contact areas are straight and parallel to each other.
References Cited (Backward Citations)
US2236162A
Cited
US3089106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |