Tape recording machine
US4499783A · kind A · utility
5Cited by
12References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1982 |
| Grant date | Feb 19, 1985 |
| Priority date | — |
| Expiry date | Jan 4, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19633
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pair of rotational transmission gears frictionally engage a shaft unit under a frictional force from a common spring, and a pivoting member carrying drive pinion gears pivots one pinion gear into engagement with a transmission gear for slow speed mode and second and third pinion gears into engagement with both of said transmission gears for high speed rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.