US3587075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carriage mechanism for direct access data storage device
Assignee: Information Storage Systems Inc
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Filing: 1969-01-21
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Granted: 1971-06-22
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Expires: 1989-01-21
Abstract
Abstract Apparatus for supporting an array of read/write heads for precise linear movement radially of a stack of rotatably recording discs, including a carriage for transmitting a drive force to the center of mass of the linear moving assembly, the carriage being supported on a three-point bearing assembly including a pair of right-angle roll assemblies bearing against a precision rail.
Inventors
- 👤 Stanley F Brown
- 👤 Steven J Macarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:21
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
In a direct access data storage device including one or more data storage discs mounted for rotation about a common axis, an array of read/write heads and an actuator, apparatus for supporting the array and translating motion of the actuator into precise linear movement of the read/write heads along an extension of a diameter of the discs, including: a precision rail positioned at one side of and in overlapping relation with the actuator and extending parallel to the extension of a diameter of the discs; a support member adjacent the actuator and spaced from the rail; a carriage including an elongated adapter and two spaced arm members protruding therefrom, the first arm member being positioned on the rail and the second arm member being supported by the support member through a roller bearing mounted in alignment with and spaced from the extension of the disc diameter, the first arm member guiding the carriage in a precise linear path axially of the rail and along the extension of the disc diameter with low, uniform frictional resistance.
Claim 2
Dependent Claim
175 words
In a direct access data storage device including one or more data storage discs mounted for rotation about a common axis, an array of read/write heads and an actuator, apparatus for supporting the array and translating motion of the actuator into precise linear movement of the read/write heads along an extension of a diameter of the discs, including: a precision rail positioned at one side of and in overlapping relation with the actuator and extending parallel to the extension of a diameter of the discs; a support member adjacent the actuator and spaced from the rail; a carriage including an elongated adapter and two spaced arm members protruding therefrom, the first arm member being positioned on the rail and the second arm member being supported by the support member through a roller bearing mounted in alignment with and spaced from the extension of the disc diameter, the first arm member guiding the carriage in a precise linear path axially of the rail and along the extension of the disc diameter with low, uniform frictional resistance.
Claim 3
Dependent Claim
46 words
Apparatus as defined in claim 1 wherein: the transducer includes fixed and movable elements, the fixed elements being mounted adjacent the actuator and the movable element being mounted on the carriage for horizontal movement in approximately the plane of the mean head position of the array.
Claim 4
Dependent Claim
56 words
Apparatus as defined in claim 2 wherein: the carriage is a generally U-shaped member formed by the first arm member, the adapter and the second arm member; and the first arm member is an elongated structure in which are mounted two right-angle roll assemblies which are spaced apart and which are spring loaded against the rail.
Claim 5
Dependent Claim
47 words
Apparatus as defined in claim 3 wherein: the second arm member is an elongated structure having planar upper and lower surfaces, the lower surface being spring loaded against a roller bearing on the support member and the upper surface supporting the movable element of the position transducer.
Claim 6
Dependent Claim
40 words
Apparatus as defined in claim 3 wherein: the second arm member is an elongated structure supporting a roller bearing at a point removed from the adapter, the roller bearing being spring loaded against a bearing surface on the support member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |