Magnetic tape guide roller system
US4541557A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1983 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | May 6, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/605
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
To guide magnetic tape, particularly tape used in video tape recording, and especially for digital video signals for self-centering of the tape with respect to a datum (41) of a roller system, two coaxially journalled frusto-conical rollers are provided, which are independently rotatable with respect to a shaft (4) having a shaft axis (40) and, further, tiltable about tilt axes (13, 14) which extend at right angles to the shaft axis (40) and intersect the intersection point of the then existing axes of rotation (7, 8) of the respective rollers with the shaft. Upon drift or creep of the tape (1) from symmetrical positioning with respect to the rollers, return forces will be applied to the tape tending to return the tape to centered, symmetrical position, independently of the running direction of the tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.