US4879620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic head for flexible disk drive
Assignee: Alps Alpine Co Ltd
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Filing: 1988-01-28
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Granted: 1989-11-07
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Expires: 2008-01-28
Abstract
Abstract A magnetic head for a flexible disk which prevents lead wires from being cut or damaged by contact thereof with an edge of a fitting window of a gimbal spring when they are to be led out and facilitates such a drawing operation and a connecting operation of lead wires. The magnetic head comprises a coil bobbin having a terminal locating table formed on a flange thereof which is located at an end of a coil bobbin adjacent a support plate. A number of terminals corresponding to lead wires of a coil wound on the coil bobbin are provided uprightly on the terminal locating table, and ends of the lead wires are secured to the corresponding terminals. The terminals extend upwardly through and above the support plate and are connected to a printed circuit board mounted on the support plate.
Inventors
- 👤 Akihiko Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:25
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/265; G11B5/10; G11B5/105; G11B5/17
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
A magnetic head for a flexible disk which includes a slider, a magnetic core securely mounted on said slider, a coil bobbin mounted on said magnetic core and having a coil wound thereon, and a support plate for supporting said slider thereon, and wherein lead wires of said coil are lead out to a location on or above an upper face of said support plate, comprising a flange of said coil bobbin which is located at an end of said coil bobbin adjacent said support plate, and a number of terminals corresponding to said lead wires of said coil provided uprightly on said flange and having ends of the corresponding lead wires secured thereto, said terminals extending upwardly through and above said upper face of said support plate; wherein said flange includes projections defining one recess for each terminal, a base portion of each terminal being located in said one recess.
Claim 2
Dependent Claim
151 words
A magnetic head for a flexible disk which includes a slider, a magnetic core securely mounted on said slider, a coil bobbin mounted on said magnetic core and having a coil wound thereon, and a support plate for supporting said slider thereon, and wherein lead wires of said coil are lead out to a location on or above an upper face of said support plate, comprising a flange of said coil bobbin which is located at an end of said coil bobbin adjacent said support plate, and a number of terminals corresponding to said lead wires of said coil provided uprightly on said flange and having ends of the corresponding lead wires secured thereto, said terminals extending upwardly through and above said upper face of said support plate; wherein said flange includes projections defining one recess for each terminal, a base portion of each terminal being located in said one recess.
Claim 3
Dependent Claim
34 words
A magnetic head for a flexible disk according to claim 1, wherein end portions of said lead wires of said coil are wound around and secured to the base portions of the corresponding terminals.
Claim 4
Dependent Claim
35 words
A magnetic head for a flexible disk according to claim 1, wherein a projection is provided between each adjacent ones of the recesses of said flange for contacting a lower face of said support plate.
Claim 5
Dependent Claim
27 words
A magnetic head for a flexible disk according to claim 1, wherein said terminals are connected directly to a printed circuit board mounted on said support plate.
Claim 6
Dependent Claim
88 words
A magnetic head comprising: a magnetic core; and a coil bobbin mounted on said magnetic core and having a coil wound thereon, wherein the coil bobbin includes a flange formed on one end of the coil bobbin, the flange having projecting portions defining at least two recesses and also having at least two terminals provided projecting from the flange, each terminal having a lower portion thereof located in one of the recesses, wherein lead wires from the coil are wound around the lower portion only of the terminals.
Claim 7
Dependent Claim
88 words
A magnetic head comprising: a magnetic core; and a coil bobbin mounted on said magnetic core and having a coil wound thereon, wherein the coil bobbin includes a flange formed on one end of the coil bobbin, the flange having projecting portions defining at least two recesses and also having at least two terminals provided projecting from the flange, each terminal having a lower portion thereof located in one of the recesses, wherein lead wires from the coil are wound around the lower portion only of the terminals.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |