US4268879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension for air bearing head arm assembly
Assignee: International Business Machines Corp
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Filing: 1979-05-07
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Granted: 1981-05-19
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Expires: 1999-05-07
Abstract
Abstract A magnetic head arm suspension assembly which supports air bearing head sliders and magnetic transducers comprises a rigid load beam coupled to a box-like arm through a spring element which has flexible legs. The load beam is seated in a recess in the arm, so that the centerlines of the load beam and of the spring are coincident. In this manner, the sliders and magnetic transducers, which are mounted to the suspension assembly, are loaded in a direction perpendicular to the planar surface of a moving storage medium and maintained in a parallel plane relative to the planar surface of the medium.
Inventors
- 👤 Robert B. Watrous
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:32
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
149 words
A magnetic head arm suspension assembly for supporting a flying head comprising: a hollow box-like arm having a flat planar surface and a recess therein; a load beam element matingly seated in a close fit relation within said recess, said load beam element having a flat planar surface; a U-shaped flat planar resilient spring the cross-arm of said spring attached to said planar surface of said load beam element, and the other end attached to said planar surface of said arm; and first and second magnetic transducers mounted respectively at each end of said planar surface of said load beam and adjacent to said one end and said other end of said spring on either side of the center lines of said load beam and said spring for translation in a direction orthogonal to said flat planar surface of said arm while the transducers move in a parallel relationship.
Claim 2
Dependent Claim
149 words
A magnetic head arm suspension assembly for supporting a flying head comprising: a hollow box-like arm having a flat planar surface and a recess therein; a load beam element matingly seated in a close fit relation within said recess, said load beam element having a flat planar surface; a U-shaped flat planar resilient spring the cross-arm of said spring attached to said planar surface of said load beam element, and the other end attached to said planar surface of said arm; and first and second magnetic transducers mounted respectively at each end of said planar surface of said load beam and adjacent to said one end and said other end of said spring on either side of the center lines of said load beam and said spring for translation in a direction orthogonal to said flat planar surface of said arm while the transducers move in a parallel relationship.
Claim 3
Dependent Claim
25 words
A magnetic head arm suspension assembly as in claim 1, wherein the centerline of said load beam is coincident with the centerline of said spring.
Claim 4
Dependent Claim
28 words
A magnetic head arm suspension assembly as in claim 1, wherein said free ends of said spring are formed from parallel flat sections disposed in the same plane.
Claim 5
Dependent Claim
20 words
A magnetic head arm suspension assembly as in claim 1, wherein said load beam is configured as a rectangular box.
Claim 6
Dependent Claim
20 words
A magnetic head arm suspension assembly as in claim 1, including flat spacers disposed between said arm and said spring.
Claim 7
Dependent Claim
19 words
A magnetic head arm suspension assembly as in claim 1, including two flexures mounted to said arm suspension assembly.
Claim 8
Dependent Claim
40 words
A magnetic head arm suspension assembly as in claim 6, wherein said load beam element includes a flat top pedestal and said flexures include projections for forming spacings and pivot point between each of said flexures and said load beam.
Claim 9
Dependent Claim
36 words
A magnetic head arm suspension assembly as in claim 1, wherein said box-like arm as a slot in a side wall connecting to said recess for accepting air flow to be applied to said load beam.
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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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |