Crystal ball with assembled motive die set
US6185849A · kind A · utility
3Cited by
13References
10Claims
0Family size
Inventor
Key dates
| Filing date | Nov 24, 1998 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Nov 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18288
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A crystal ball has an assembled motive die set. The crystal ball includes a music box and a driving base, wherein the driving base has a plurality of driven gears which are driven by a center motive gear installed on the base of the driving base. Assembled motive die sets representing different motion types are mounted on the upper cover of the base with respect to the driven gears, and are changeable as desired. The motive die set is influenced by the dynamic force of the music box through the driving base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.