Device for heating thermoplastic eyeglass frames
US3932114A · kind A · utility
6Cited by
2References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jun 3, 1974 |
| Grant date | Jan 13, 1976 |
| Priority date | — |
| Expiry date | Jun 3, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C13/001
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for warming thermoplastic articles such as eyeglass frames quickly up to the softening temperature of the thermoplastic, but not exceeding the temperature at which degradation of the thermoplastic would take place by means of temperature controlled infrared radiators and also preferably using a body of heated air to blanket the thermoplastic article from ambient air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.