Data tape speed tachometer using a porous roller bearing
US6745976B1 · kind B1 · utility
7Cited by
17References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2003 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Jun 3, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2401/242
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A tape roller bearing is provided that prevents the development of an air film between the roller surface and the tape. The spool surface is made from porous material so that air flows through the spool surface. The porous material vents air uniformly over the roller surface, and the tape remains in direct contact with the roller, even at high speed. The speed of the tapes movement can be determined by measuring the speed of movement of the spool surface using an encoder disk and an encoder module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.