Thermoelectric paint color changing apparatus
US5136850A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1990 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Nov 19, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B21/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus for generating cold and hot for application selectively by contact on an object having a paint or coating whose color changes in response to cold and hot temperatures. The apparatus is easy to hold and handle with one hand while holding an object for application, e.g., a doll or toy car, in the other hand. The apparatus includes a battery powered thermoelectric device having a cold sink shaped to form a cold applicator for cooling the paint sufficiently to change its color, and a heat sink shaped to form a heat applicator for changing back the color. For a doll, the cold sink applicator is used to change, for example, the natural color of the lips and cheeks to a make-up color, and a heat sink shaped to form a comb for combing the doll's hair and a heat applicator for returning the natural color of the doll's lips and cheeks through heat application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.