Contact lens sterilization device
US4677280A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1986 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Oct 20, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2203/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A contact lens sterilization device has a case which is generally made of synthetic resin having defined therein: a bottom chamber for receiving the heating element; a middle chamber for receiving a contact lens; a top chamber for receiving an electronic circuit for controlling the heating element therein so as to achieve a better thermal separation between the top chamber and the bottom chamber. A heating element which may be a PTC semiconductor device is secured to the lower surface of the wall separating the middle chamber and the bottom chamber by way of a heat transmission plate and secured by a holding plate and columns appending from the separation wall. The two electrodes of the heating element may be electrically in contact with the heat transmission plate and the holding plate, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.