Heat releasing bag with sodium acetate solution and electric heating element producing infrared radiation
US5805766A · kind A · utility
Inventor
Key dates
| Filing date | Jul 7, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Jul 7, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24V30/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat releasing chemical bag including a flexible water-tight bag, sodium acetate solution contained in the flexible bag, a triggering element mounted in the flexible bag and dipped in sodium acetate solution to activate sodium acetate solution, causing it to crystallize and to release heat during its crystallization, an electric heating element mounted in an electrically insulative container inside the poly bag and controlled to heat crystallized sodium acetate, causing it to be reduced to liquid state. Furthermore, a ceramic paste is contained in the electrically insulative container and completedly surrounds the electric heating element and activated to produce far-infrared rays when the electric heating element is to a source of electric power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.