Patent US4745504A successfully refreshed from Google Patents.
US4745504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc memory head positioner
Assignee: HP Inc
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Filing: 1987-03-19
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Granted: 1988-05-17
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Expires: 2007-03-19
Abstract
Abstract A friction driven head positioner system for a disk memory including a positioner arm with a flexural pivot end and a driven end on which read/write heads are mounted. The flexural pivot end is coupled to a support post of the chassis of the disk memory and a spring urges the driven end of the positioner arm into a shaft of a positioner motor to thereby drive the heads across tracks of the disk.
Inventors
- 👤 Wayne E. Foote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:30
CPC Classifications
G; G11; G11B; G11B21/00; G11B21/02; G11B21/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
120 words
Apparatus for positioning read/write heads in a disc memory system comprising: a chassis; support means mounted on said chassis; a positioner arm, having a supported end and a driven end, for supporting at least one read/write head and for positioning said read/write head over a desired track on a memory disc; flexural support means for pivotally coupling said supported end of said positioner arm to said support means; drive means coupled to said driven end of said positioner arm for rotatably driving and providing vertical support for said positioner arm, said read/write head mounted at said driven end of said positioner arm; and spring means for urging said driven end of said positioner arm into engagement with said drive means.
Claim 2
Dependent Claim
120 words
Apparatus for positioning read/write heads in a disc memory system comprising: a chassis; support means mounted on said chassis; a positioner arm, having a supported end and a driven end, for supporting at least one read/write head and for positioning said read/write head over a desired track on a memory disc; flexural support means for pivotally coupling said supported end of said positioner arm to said support means; drive means coupled to said driven end of said positioner arm for rotatably driving and providing vertical support for said positioner arm, said read/write head mounted at said driven end of said positioner arm; and spring means for urging said driven end of said positioner arm into engagement with said drive means.
Claim 3
Dependent Claim
47 words
Apparatus as in claim 1 wherein said positioner arm includes a driven surface at said driven end of said positioner arm and said drive means includes a drive shaft for engaging said driven surface, said spring means urging said driven surface into engagement with said drive shaft.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |