High speed transport cassette
US5409174A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 1993 |
| Grant date | Apr 25, 1995 |
| Priority date | — |
| Expiry date | Dec 30, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/45
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high speed tape transport cassette comprises a pair of spaced apart flangeless hubs and an access space between the hubs. On each side of the access space, 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 extending in a direction transverse to the axis of the guide and providing a surface roughness average between 20 and 40 microinches. The tape extends in a tape transport path from one hub directly to and engaging the grooved central portion of one guide member and across the access opening directly to and engaging the grooved central portion of the other guide member and directly to the other hub. The guide members are the sole members in the cassette engaged by the tape in the tape transport path between the hubs. Each hub is provided with a cap of magnetically attractive material and is loosely mounted in the cassette for free axial movement between the top and bottom walls of the cassette.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.