Patent US2162574A successfully refreshed from Google Patents.
Patent US3838455A successfully refreshed from Google Patents.
US3838455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head carriage assembly for magnetic disk storage apparatus
Assignee: International Business Machines Corp
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Filing: 1973-03-05
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Granted: 1974-09-24
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Expires: 1993-03-05
Abstract
Abstract A carriage assembly, useful in magnetic disk apparatus that employs movable accessing head assemblies, includes a channelshaped body having paired angularly disposed bearings which ride on a cylindrical guide support rod. A high degree of stability is achieved by a sprung way that provides preload forces at one side of the carriage, and a fixed way at the other side of the carriage.
Inventors
- 👤 C Barnard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:49
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
124 words
A carriage assembly useful with bidirectional accessing transducers in storage apparatus comprisng: a frame assembly; a single cylindrical rod in fixed position on said frame assembly, the axis of said rod defining a desired direction of travel; a carriage structure seated to said rod for transporting said accessing transducers; a fixed way attached to said frame assembly positioned adjacent to one side of said carriage structure; a sprung way attached to said frame assembly positioned adjacent to the other side of said carriage structure; and a plurality of bearings attached to said carriage structure for engaging said ways and said rod, so that the tendency for said carriage structure to roll about said rod is limited, said bearings being substantially in the same plane.
Claim 2
Dependent Claim
124 words
A carriage assembly useful with bidirectional accessing transducers in storage apparatus comprisng: a frame assembly; a single cylindrical rod in fixed position on said frame assembly, the axis of said rod defining a desired direction of travel; a carriage structure seated to said rod for transporting said accessing transducers; a fixed way attached to said frame assembly positioned adjacent to one side of said carriage structure; a sprung way attached to said frame assembly positioned adjacent to the other side of said carriage structure; and a plurality of bearings attached to said carriage structure for engaging said ways and said rod, so that the tendency for said carriage structure to roll about said rod is limited, said bearings being substantially in the same plane.
Claim 3
Dependent Claim
20 words
A carriage assembly as in claim 1, wherein said carriage structure includes a channel-shaped portion that partially surrounds said rod.
Claim 4
Dependent Claim
46 words
A carriage assembly as in claim 1, wherein said plurality of bearings comprises two pairs of bearings, the bearing pairs being spaced along said rod axis to provide pitch stability; and the bearings of each pair being spaced approximately 90* around the circumference of said rod.
Claim 5
Dependent Claim
21 words
A carriage assembly as in claim 1, wherein said carriage structure includes a receiver for mounting a multiplicity of magnetic transducers.
Claim 6
Dependent Claim
19 words
A carriage assembly as in claim 4, wherein said multiplicity of magnetic transducers includes at least one servo transducer.
Claim 7
Dependent Claim
16 words
A carriage assembly as in claim 1, further including an actuator for driving said assembly bidirectionally.
Claim 8
Dependent Claim
16 words
A carriage assembly as in claim 1, wherein said sprung way comprises a trapezoidal apertured plate.
Claim 9
Dependent Claim
39 words
A carriage assembly as in claim 7, including a bolt disposed through the aperture of said plate and connected to said frame assembly; and a resilient element encompassing a portion of said bolt and compressed against said frame assembly.
Claim 10
Dependent Claim
21 words
A carriage assembly as in claim 1, wherein said fixed way and sprung way are located in the same horizontal plane.
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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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |