Patent US4394667A successfully refreshed from Google Patents.
US4394667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial access drive for an optical disk recorder
Assignee: Xerox Corp
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Filing: 1982-03-26
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Granted: 1983-07-19
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Expires: 2002-03-26
Abstract
Abstract An optical disk recorder in which the optical disk, the drive spindle and the disk drive motor are moved or pivoted in an arcuate path relative to stationary laser optics. When moved in such an arcuate path, the optical disk, spindle and drive motor have a lessened movement of inertia (compared to linear movement thereof) which permits relatively fast accessing of an optical disk without a large drive motor. The accessing system can be naturally statically balanced by placing the spindle and the drive motor or opposite sides of the pivot point.
Inventors
- 👤 David Cheng
- 👤 Stephen T. Chai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:11
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/005; G11B17/34; G11B7/00; G11B7/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
In a data recorder system including optical means for providing an information modulated light beam, a member including a data recording surface sensitive to said light beam, and first means for causing rotation of said data recording surface, characterized in that said optical means are held in a stationary position, and second means for moving said data recording surface along an arcuate path relative to said optical means.
Claim 2
Dependent Claim
68 words
In a data recorder system including optical means for providing an information modulated light beam, a member including a data recording surface sensitive to said light beam, and first means for causing rotation of said data recording surface, characterized in that said optical means are held in a stationary position, and second means for moving said data recording surface along an arcuate path relative to said optical means.
Claim 3
Dependent Claim
29 words
The recorder system of claim 1 wherein said second means includes a motor having a rotor and a rigid member coupled to said rotor and to said first means.
Claim 4
Dependent Claim
19 words
The recorder system of claim 2 wherein said first means is located at one end of said rigid member.
Claim 5
Dependent Claim
45 words
The recorder system of claim 2 wherein a portion of said first means is located at one end of said rigid member and other portion of said first means is located at the other end of said rigid member whereby said system is dynamically balanced.
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) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |