Film projector toy
US4756614A · kind A · utility
32Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1987 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Apr 14, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A film projector toy is described, including a projector casing and a film cassette received by the casing. The film cassette includes a plurality of films movable one relative to another. Indicia representing different portions of a complete, predetermined picture image are illustrated on each film and the films are superimposed in the cassette. The indicia are then projected, for example, on a wall, so as to form the complete picture image. At least one film is then moved relative to the other films so that the indicia are moved, thereby creating a moving picture image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.