Toy vehicle with thermochromic material
US4917643A · kind A · utility
50Cited by
23References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1987 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Jun 26, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/913
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A toy vehicle spray painted with paint containing thermochromic material which changes color as the temperature of the vehicle varies. Selected portions of the toy vehicle may be painted with the thermochromic material to provide a variety of patterns, designs, numbers, letters or other indicia which change color in response to temperature variations. In addition, different portions of the toy vehicle may be painted with different paints containing different color thermochromic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.