Portable data storage cartridge encoded multi-position mechanical indicator
US6744595B2 · kind B2 · utility
4Cited by
9References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2002 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | Aug 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/08714
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An indicator comprises a rotary device in the form of a right cylinder arranged to be rotatable in a chamber of a portable data storage cartridge, which has an exterior wall opening to the chamber. A peripheral surface of the rotary device has an encoded pattern of at least one cylindrical surface and a plurality of facets interrupting the cylindrical surface(s). The facets are located at various axial positions, and at various angularly spaced rotational positions, such that, at differing rotational positions of the rotary device, at least one or none of the facets is positioned at the exterior opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.