High speed tape transport system
US5433397A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1993 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Dec 30, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/08778
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a tape drive system, a cassette comprises a pair of spaced apart flangeless hubs and an access opening between the hubs. Each hub is provided with a cap of magnetically attractive material. Each hub receives a rotatable spindle which has a magnetic portion at its upper end. There are abutting surfaces on each hub and spindle which act as registration surfaces to provide a contiguous but non engaging relationship between the spindle magnetic portion and the hub cap of magnetically attractive material. The magnetic attraction between the magnetic portion of each spindle and its respective hub is the sole force urging each hub into engagement with its respective spindle. The abutting registration surfaces are located on each spindle relative to the bottom wall of the cassette so as to suspend its respective hub between the housing top and bottom walls. On each side of the access opening, there is mounted a cylindrical guide member which has a stationary flange at each end and a stationary central grooved portion between the flanges. The grooved surface comprises concave grooves providing a surface roughness average between 20 and 40 microinches. Each of said hubs has a tape engagem…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.