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US4924200A Expired / Lapsed US ⏱️ 0.0 years remaining

Split bobbin and coil device

Assignee: TDK Corp
•
Filing: 1989-03-21
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Granted: 1990-05-08
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Expires: 2009-03-21
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Abstract

Abstract In a split bobbin designed to be rotatably mountable on a core and attached to a bobbin holding base after specific winding of coils, the split bobbin has collars at least at its both ends and cutout sections at least at two places in the outer periphery of these collars. In these cutout sections are provided lead terminal holding holes of specific depth in which rod-like lead terminals can be inserted. Furthermore, the present invention provides a coil device which includes a split bobbin having coil winding areas, winding end fastening members provided on an outer periphery, and collars provided with through holes connected to the winding end fastening members; a core produced of a magnetic material with the bobbin mounted in a split state; a winding wound on the bobbin in the winding areas, with its end wound on the winding end fastening members; and a bobbin holding base which supports the bobbin and the coil in a fitted state, and has lead terminals routed in the through holes of the collars to the winding end fastening members. In this winding end fastening members, the end of the coil is connected with the lead terminals.

Inventors

  • 👤 Satoru Kitahara
  • 👤 Koichi Yasuda
  • 👤 Toshio Izu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 18:32
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/027; H01F27/28; H01F27/29; H01F5/00; H01F5/04

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 119 words
A coil device including a split bobbin having coil winding areas, winding end fastening members provided on an outer periphery, and collars, provided with through holes, connected to said winding end fastening members; a core produced of a magnetic material with said bobbin mounted in a split state; a coil wound on said bobbin in said winding areas, with its end wound on said winding end fastening members; and a bobbin holding base which supports said bobbin and said coil in a fitted state, and has lead terminals routed in said through holes of said collars to said winding end fastening members, the end of said coil is connected with said lead terminals at said winding end fastening members.
Claim 2
Dependent Claim 119 words
A coil device including a split bobbin having coil winding areas, winding end fastening members provided on an outer periphery, and collars, provided with through holes, connected to said winding end fastening members; a core produced of a magnetic material with said bobbin mounted in a split state; a coil wound on said bobbin in said winding areas, with its end wound on said winding end fastening members; and a bobbin holding base which supports said bobbin and said coil in a fitted state, and has lead terminals routed in said through holes of said collars to said winding end fastening members, the end of said coil is connected with said lead terminals at said winding end fastening members.
Claim 3
Dependent Claim 28 words
A coil device as claimed in claim 1, wherein said winding end fastening members and said through holes are provided at least at two places in said collar.
Claim 4
Dependent Claim 26 words
A coil device as claimed in claim 1, wherein said winding end fastening members are pins produced of an electrically-conductive material fitted in said through holes.

References Cited (Backward Citations)

US3544940A Cited
JPS5816257A Cited
US4638554A Cited
JPS60143612A Cited
US4602122A Cited
JPS62230015A Cited
JPS62291108A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-05-07 1993-11-06 1994-05-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-05-07 1997-11-06 1998-05-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-05-07 2001-11-06 2002-05-08 $7700.00 Window Closed / Lapsed

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