Patent US5402098A successfully refreshed from Google Patents.
US5402098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil
Assignee: SHINAWA SHOJI Co Ltd
•
Filing: 1992-03-23
•
Granted: 1995-03-28
•
Expires: 2012-03-23
Abstract
Abstract The invention provides a coil comprising a plurality of stacked coil elements connected together at conductor ends to form at least one series of spiral conductors, the coil being characterized in that each of the coil elements includes a sheet insulator, a first conductor in a planar spiral form and provided on one surface of the insulator and a second conductor in a planar spiral form and provided on the other surface of the insulator, the conductors on the respective surfaces of the insulator being wound spirally in directions opposite to each other when seen from above at the same side of the insulator.
Inventors
- 👤 Hideo Ohta
- 👤 Chen W. Ping
- 👤 Sinji Ohki
- 👤 Yoshiro Morishita
- 👤 Teruyoshi Sonoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:59
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/2804; H01F27/2809
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
238 words
A device comprising a winding and at least one secondary winding, the primary winding and the secondary winding each having at least one coil element, each of the coil elements of each winding including a sheet insulator, a first conductor provided on one surface of the insulator in a planar spiral form and extending form the center of the insulator outwardly toward the periphery thereof and a second conductor provided on the other surface of the insulator in a planar spiral form and extending from the center of the insulator outwardly toward the periphery thereof, the conductors on the respective surfaces of the insulator being wound spirally in directions opposite to each other when seen from above at the same side of the insulator, each coil element of each winding having a through hole formed in the center of the coil element to connect the inner ends of the first and second conductors of the coil element to each other by means of the through holes, each sheet insulator of each winding having a peripheral pad at the periphery of each of the windings on its surfaces and having at least one peripheral through hole in the periphery thereof, each of the pads and peripheral through holes of each of the sheet insulators in each winding being in register, and each conductor end serving as an external terminal of each winding being connected to said peripheral through hole.
Claim 2
Independent Claim
238 words
A device comprising a winding and at least one secondary winding, the primary winding and the secondary winding each having at least one coil element, each of the coil elements of each winding including a sheet insulator, a first conductor provided on one surface of the insulator in a planar spiral form and extending form the center of the insulator outwardly toward the periphery thereof and a second conductor provided on the other surface of the insulator in a planar spiral form and extending from the center of the insulator outwardly toward the periphery thereof, the conductors on the respective surfaces of the insulator being wound spirally in directions opposite to each other when seen from above at the same side of the insulator, each coil element of each winding having a through hole formed in the center of the coil element to connect the inner ends of the first and second conductors of the coil element to each other by means of the through holes, each sheet insulator of each winding having a peripheral pad at the periphery of each of the windings on its surfaces and having at least one peripheral through hole in the periphery thereof, each of the pads and peripheral through holes of each of the sheet insulators in each winding being in register, and each conductor end serving as an external terminal of each winding being connected to said peripheral through hole.
Claim 3
Dependent Claim
36 words
A device according to claim 1 wherein each of said windings comprises a plurality of said coil elements and wherein each conductor end serving as an intermediate terminal of each winding being connected to a pad.
References Cited (Backward Citations)
US3133249A
Cited
DE1563464A1
Cited
US4494100A
Cited
US4543553A
Cited
US4593245A
Cited
GB2163603A
Cited
GB2173956A
Cited
EP0267108A1
Cited
EP0310396A1
Cited
US5126707A
Cited
US5291152A
Cited
US5237165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-27 | 1998-09-26 | 1999-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-27 | 2002-09-26 | 2003-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-27 | 2006-09-26 | 2007-03-28 | $7700.00 | Window Closed / Lapsed |