Light projecting toy musical box
US4942502A · kind A · utility
10Cited by
8References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Jul 18, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/806
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light projecting toy musical box projects a light pattern which is synchronized with musical sound generated by an acoustic mechanism. The projected light patterns are formed by providing a lamp within a base and rotatably mounting a dome over the lamp and substantially on top of the base. The dome is made out of translucent material which is patterned with a semi-opaque coatings so as to form light patterns on the dome itself and project the light patterns on adjacent ceilings and/or walls of a room.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.