Safety candle
US6695611B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Sep 19, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Feb 6, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D3/18
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Candles without conventional wicks have a long-life wick assembly mounted upon them, consisting of a supporting metallic dish that carries a permanent short wick. The wick includes heat conducting elements, which convey heat downwardly from the candle flame to form a pool of molten wax below the dish, into which pool the wick extends. Wick extensions may be used, when a permanent container supports the wick assembly. In the case of free-standing wax candles the shape and construction of the wick-support dish limits the extent of the pool, to maintain the surrounding candle wall intact. The candles are long-burning, and the wick assembly follows down the length of the candle, as the candle is consumed. The metallic dish acts as a heat and safety barrier, to contain the candle flame. An intermediate yoke supports the wick and connects the wick to the dish and limits the rate of heat transfer to the underlying candle. A removable flame damper may be applied about the upper wick portion, to limit the size of the flame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.