Internal rotary structure of a crystal ball seat
US6038798A · kind A · utility
2Cited by
6References
13Claims
0Family size
Inventor
Key dates
| Filing date | Nov 25, 1997 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Nov 25, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1966
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An internal rotary structure of a crystal ball seat having a base plate, a rotary disk, gears and other components; characterized in that: a circular platen is formed on the center of the upper surface of the base plate; a rotary disk is installed on the periphery of the platen of the base plate; circular teeth formed on the inner rim of the rotary disk, and a driving gear of longitudinal axis is installed below the driving gear of the music bell rolling wheel. By this structure, in a small space, the rotary disk may be used to drive the music bell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.