US4792875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gimbal spring for floating type magnetic head
Assignee: Alps Alpine Co Ltd
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Filing: 1987-08-25
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Granted: 1988-12-20
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Expires: 2007-08-25
Abstract
Abstract A gimbals spring for supporting a floating type magnetic head has bent portions formed at both lateral edges of a load beam of the gimbals spring, the bent portions projecting in a direction in which the magnetic head projects from the load beam. A reinforcing plate is secured to the reverse side of the distal end portion of the load beam with respect to the magnetic head in order to make compensation for the strength of said distal end portion which is weakened due to the fact that the bent portions cannot extend as far as the distal end portion of the load beam because of the existence of the magnetic head. Thus, the bent portions do not take part in determination of the overall thickness of the magnetic head including the gimbals spring, which means that it is possible to reduce the thickness of the floating type magnetic head and minimize the size of the magnetic disk drive.
Inventors
- 👤 Hideichi Ohdaira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:46
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/58; G11B5/60; G11B5/6005; G11B5/4806; G11B5/4833
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
245 words
In a gimbal spring for supporting a floating type magnetic head at a distal end thereof extending lengthwise in one horizontal direction from a mounting member at an opposite end thereof, said gimbal spring including a flexure member at said distal end thereof and a load beam having one end mounted to said mounting member and its other end supporting said flexure member, wherein said magnetic head has an upper surface which is mounted to said flexure member of said gimbal spring and a lower surface which is placed in contact with a magnetic medium disposed in a horizontal plane in a downward direction from said gimbal spring, the improvement in said gimbal spring comprising: said load beam having lateral edges extending widthwise in a transverse horizontal direction perpendicular to said one horizontal direction, and respective bent portions each formed at a respective one of said lateral edges projecting on a lower side of said load beam in said downward direction, which is the same direction said lower surface of said magnetic head faces, in order to obtain a thin profile for the structure of said load beam and magnetic head; said bent portions extending along the length of said load beam near said flexure member but spaced a given distance therefrom; and a reinforcing plate secured to an upper side of said load beam, opposite from said lower side, substantially across said distance between the ends of said bent portions and said flexure member.
Claim 2
Dependent Claim
245 words
In a gimbal spring for supporting a floating type magnetic head at a distal end thereof extending lengthwise in one horizontal direction from a mounting member at an opposite end thereof, said gimbal spring including a flexure member at said distal end thereof and a load beam having one end mounted to said mounting member and its other end supporting said flexure member, wherein said magnetic head has an upper surface which is mounted to said flexure member of said gimbal spring and a lower surface which is placed in contact with a magnetic medium disposed in a horizontal plane in a downward direction from said gimbal spring, the improvement in said gimbal spring comprising: said load beam having lateral edges extending widthwise in a transverse horizontal direction perpendicular to said one horizontal direction, and respective bent portions each formed at a respective one of said lateral edges projecting on a lower side of said load beam in said downward direction, which is the same direction said lower surface of said magnetic head faces, in order to obtain a thin profile for the structure of said load beam and magnetic head; said bent portions extending along the length of said load beam near said flexure member but spaced a given distance therefrom; and a reinforcing plate secured to an upper side of said load beam, opposite from said lower side, substantially across said distance between the ends of said bent portions and said flexure member.
Claim 3
Dependent Claim
45 words
An improved gimbal spring according to claim 1, wherein a lead wire connected to said magnetic head extends along the length of said load beam on the lower side thereof in a space formed between said downwardly projected bent portions on the lateral edges thereof.
References Cited (Backward Citations)
US4605979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |