US4507628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay line
Assignee: Elmec Corp
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Filing: 1983-07-13
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Granted: 1985-03-26
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Expires: 2003-07-13
Abstract
Abstract Disclosed is an electromagnetic type delay line comprising an inductance element formed of a coiled conductor and a plurality of capacitors connecting the conductor to ground and consequently possessing a plurality of sections. The inductance element is formed by coiling the conductor at a prescribed pitch in the shape of a single-layer solenoid. In the inductance element, the one-turn pitch P and half-turn pitch B are selected so as to satisfy the expression, B/P≧1.0. Owing to this construction, the coupling coefficients between the individual sections of the inductance element can be easily approximated to the theoretically optimum values.
Inventors
- 👤 Kazuo Kameya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:09
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/30; H03H7/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
70 words
A delay line, comprising; an inductance element formed of a coiled conductor and a plurality of capacitors connecting said conductor to ground, said conductor of said inductance element being coiled in the shape of a single-layer solenoid with adjacent turns of said conductor being spaced from one another, a one-turn pitch P and a half-turn pitch B of said inductance element being selected so as to satisfy the relation, B/P≧1.0.
Claim 2
Dependent Claim
70 words
A delay line, comprising; an inductance element formed of a coiled conductor and a plurality of capacitors connecting said conductor to ground, said conductor of said inductance element being coiled in the shape of a single-layer solenoid with adjacent turns of said conductor being spaced from one another, a one-turn pitch P and a half-turn pitch B of said inductance element being selected so as to satisfy the relation, B/P≧1.0.
Claim 3
Dependent Claim
21 words
A delay line according to claim 1, wherein said inductance element is formed by coiling said conductor on a non-magnetic bobbin.
Claim 4
Dependent Claim
13 words
A delay line according to claim 1, wherein said inductance element is coreless.
Claim 5
Dependent Claim
20 words
A delay line according to claim 1 or claim 2, wherein said inductance element is formed in an annular shape.
Claim 6
Dependent Claim
21 words
A delay line according to claim 4, wherein said inductance element is formed by coiling a conductor on a toroidal bobbin.
References Cited (Backward Citations)
GB222187A
Cited
US4160962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |