US3922720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carriage assembly for a magnetic disc storage drive
Assignee: Information Storage Systems Inc
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Filing: 1974-01-09
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Granted: 1975-11-25
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Expires: 1994-01-09
Abstract
Abstract A carriage assembly for supporting a head accessing mechanism in a magnetic disc storage system including a pair of parallel rails having top flat surfaces and opposing side flat surfaces for supporting a movable carriage having roller bearings adapted to ride on the top surfaces and against the side surfaces while extending between the rails for movement along the longitudinal axis of the rails to access the heads relative to the recording disc.
Inventors
- 👤 Robert H Caletti
- 👤 Timothy W Martin
- 👤 Ronald L Swain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:36
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5521
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
150 words
A disc storage apparatus having a carriage assembly for supporting magnetic read/write heads that access selected data tracks on magnetic discs, consisting of: a carriage support baseplate having a central longitudinal axis defining the direction of travel of the carriage as it moves back and forth to position the heads relative to selected data tracks, first and second rails supported on the baseplate in parallel spaced relationship one to each side of the longitudinal axis with each rail having a flat top surface and a flat side surface at least partially facing the opposite rail, and a moveable carriage having rotatably mounted thereon a first set of roller bearings having at least one roller bearing riding on each of the rail top surfaces and a second set of roller bearings having at least one roller bearing bearing against each of the flat side surfaces for travel along the longitudinal axis.
Claim 2
Dependent Claim
150 words
A disc storage apparatus having a carriage assembly for supporting magnetic read/write heads that access selected data tracks on magnetic discs, consisting of: a carriage support baseplate having a central longitudinal axis defining the direction of travel of the carriage as it moves back and forth to position the heads relative to selected data tracks, first and second rails supported on the baseplate in parallel spaced relationship one to each side of the longitudinal axis with each rail having a flat top surface and a flat side surface at least partially facing the opposite rail, and a moveable carriage having rotatably mounted thereon a first set of roller bearings having at least one roller bearing riding on each of the rail top surfaces and a second set of roller bearings having at least one roller bearing bearing against each of the flat side surfaces for travel along the longitudinal axis.
Claim 3
Dependent Claim
21 words
A disc storage drive as defined in claim 1 wherein said rail flat side surfaces at least partially face the baseplate.
Claim 4
Dependent Claim
24 words
A disc storage drive as defined in claim 1 wherein said carriage includes three roller bearings in each set for support on the rails.
Claim 5
Dependent Claim
35 words
A disc storage drive as defined in claim 1 wherein said carriage includes a section extending between the rails on which are mounted the rollers which bear against the flat side surfaces of the rails.
Claim 6
Dependent Claim
24 words
A disc storage drive as defined in claim 4 wherein at least one of said rollers is spring loaded against the cooperating rail surface.
References Cited (Backward Citations)
US3643242A
Cited
US3721967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |