Patent US4347535A successfully refreshed from Google Patents.
US4347535A
Expired / Lapsed
US
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Read/write head carriage assembly
Assignee: Shugart Associates Inc
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Filing: 1977-12-19
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Granted: 1982-08-31
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Expires: 1997-12-19
Abstract
Abstract An improved read/write head carriage assembly for use with a floppy disk recorder including a rigidly mounted head-carrying arm, a pivotally mounted head-carrying arm, a damper assembly for limiting the excursion and damping the motion of the pivotally mounted arm, and a pair of protective sleds, each affixed to an arm.
Inventors
- 👤 Warren L. Dalziel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:38
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B3/00; G11B3/02; G11B3/10; G11B3/12; G11B3/121; G11B3/124; G11B3/30; G11B3/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A read/write head carriage assembly for a disk recorder comprising: a carriage member; an arm pivotally affixed to said carriage member for movement toward and away from a loaded position; disk engaging means affixed to said arm; means for biasing said arm toward said loaded position at which said disk engaging means is loaded in compliance with a suitably disposed disk; and damping means coupled between said carriage member and said arm for damping motion of said arm toward said loaded position: said damping means including a bifurcated stop member having first and second finger portions disposed in spaced-apart relationship, and a blade which is at least partially disposed between and frictionally engaged with said finger portions so as to spread apart said finger portions, thereby developing an opposing frictional force in response to motion between said stop member and said blade, whereby the motion of said arm toward said loaded position is damped.
Claim 2
Dependent Claim
154 words
A read/write head carriage assembly for a disk recorder comprising: a carriage member; an arm pivotally affixed to said carriage member for movement toward and away from a loaded position; disk engaging means affixed to said arm; means for biasing said arm toward said loaded position at which said disk engaging means is loaded in compliance with a suitably disposed disk; and damping means coupled between said carriage member and said arm for damping motion of said arm toward said loaded position: said damping means including a bifurcated stop member having first and second finger portions disposed in spaced-apart relationship, and a blade which is at least partially disposed between and frictionally engaged with said finger portions so as to spread apart said finger portions, thereby developing an opposing frictional force in response to motion between said stop member and said blade, whereby the motion of said arm toward said loaded position is damped.
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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) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |