US5299081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic head suspension assembly
Assignee: Western Digital Technologies Inc
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Filing: 1992-08-05
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Granted: 1994-03-29
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Expires: 2012-08-05
Abstract
Abstract A magnetic head suspension assembly is fabricated with a load beam formed with a central triangular-type major section, a tongue section at the front end and a rigid mount section at the opposing rear end. The load beam has flanges along the sides of the central major section and the rear mount section. A leaf spring is provided between the central major section and the rear mount section for providing flexibility to the suspension. A flexure that is joined to the load beam is formed with a U-shaped finger surrounded by a cutout at the front end of the flexure. A load dimple that is provided on the flexure is in contact with the load beam. The flexure supports an air bearing slider that pitches and rolls relative to a disk surface. The flexure does not extend beyond the load dimple of the flexure or the front leading edge of the slider. The suspension is characterized by a high first bending mode frequency and low pitch and roll stiffness.
Inventors
- 👤 Michael R. Hatch
- 👤 Chak M. Leung
- 👤 Stephen S. Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B5/00; G11B5/48; G11B5/4806; G11B5/4833; G11B5/4826
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
A magnetic head suspension assembly for transducing data that is recorded and read out from a surface of a rotating magnetic disk drive comprising: a load beam formed with a central major section; a narrow tongue section at the front end of said load beam; a mount section at the rear end of said load beam for enabling mounting said suspension to an actuator arm; a leaf spring section between said rear mount section and said major section for providing flexibility to said load beam; a flexure having a finger with a load dimple formed thereon; means for joining said flexure to said load beam; an air bearing slider having leading and trailing ends supported by said flexure for free gimbaling motion about said load dimple; and an adhesive material disposed between the top non-air bearing surface of said slider and said flexure finger, an aperture formed in said load beam tongue and a hole formed in said flexure finger, said aperture and hole being aligned for passing radiation through said aperture and said hole to said adhesive and thereby secure the slider to the flexure without undesirable distortion or stress.
Claim 2
Dependent Claim
191 words
A magnetic head suspension assembly for transducing data that is recorded and read out from a surface of a rotating magnetic disk drive comprising: a load beam formed with a central major section; a narrow tongue section at the front end of said load beam; a mount section at the rear end of said load beam for enabling mounting said suspension to an actuator arm; a leaf spring section between said rear mount section and said major section for providing flexibility to said load beam; a flexure having a finger with a load dimple formed thereon; means for joining said flexure to said load beam; an air bearing slider having leading and trailing ends supported by said flexure for free gimbaling motion about said load dimple; and an adhesive material disposed between the top non-air bearing surface of said slider and said flexure finger, an aperture formed in said load beam tongue and a hole formed in said flexure finger, said aperture and hole being aligned for passing radiation through said aperture and said hole to said adhesive and thereby secure the slider to the flexure without undesirable distortion or stress.
Claim 3
Dependent Claim
31 words
A head suspension assembly as in claim 1, wherein said flexure is joined to said slider so that no portion of said flexure projects from the leading end of said slider.
Claim 4
Dependent Claim
39 words
A head suspension assembly as in claim 1, wherein said central major section of said load beam is triangular in shape without an apex, the narrow end of said triangular-shaped major section being sufficiently wide to receive said flexure.
Claim 5
Dependent Claim
23 words
A head suspension assembly as in claim 1, including a cutout portion in said leaf spring section for providing flexibility to said suspension.
Claim 6
Dependent Claim
28 words
A head suspension assembly as in claim 1, including a damping material deposited on the bottom and top surfaces of said central major section of said load beam.
Claim 7
Dependent Claim
19 words
A head suspension assembly as in claim 5, wherein said damping material is an elastomer about 0.002-0.005 inch thick.
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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) | 1997-03-28 | 1997-09-27 | 1998-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-28 | 2001-09-27 | 2002-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-28 | 2005-09-27 | 2006-03-29 | $7700.00 | Window Closed / Lapsed |