Drive hub assembly
US4750682A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1987 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Feb 11, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/662
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hub drive assembly includes three pairs of pivoted arms, each supporting a friction pad, which may be clamped against the inner cylindrical surface of a tape supply reel. The assembly also includes a central sleeve, rotatably driven by a motor, and a second sleeve concentric with the central sleeve. The second sleeve is provided with gear teeth, which couple with gear teeth of one arm, which in turn couple with gear teeth of the other arm of each pair. Means are also provided to rotate the two sleeves relative to each other, thereby causing rotation of the arms about their pivot points via the gear couplings, so as to bring the frictional pads into, and out of, frictional engagement with the reel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.