Heated doors
US4163144A · kind A · utility
8Cited by
11References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 23, 1976 |
| Grant date | Jul 31, 1979 |
| Priority date | — |
| Expiry date | Apr 23, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A heated door is formed by two wooden face panels rendered fire-resistant, which are spaced apart by laths which define flues at the base of which are arranged one or more electrical heating elements. Openings are formed in the upper part and the lower part of each of the two face panels and into them are fitted deflectors or they are blocked by covers which are connected to the deflectors by screws. Arrangements are made for supplying power to and regulating the door and making it safe to use. This type of door is usable in dwelling or work spaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.