Extended life thermal pack
US6393843B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 2001 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Jan 24, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2007/0292
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to extended life thermal packs. In one embodiment, the thermal pack comprises a container having a first thermally reactive chemical solute therein, a rupturable solvent packet containing a solvent, and a rupturable solute packet containing a second thermally reactive chemical solute in the solute packet. The solutes are chemically separated until time of use and are different from one another. The chemical separation of solutes until time of use in combination with the structure of the thermal pack structure afford both extended duration of thermal effect by the pack and afford the user with increased control by permitting optional sequential combination of the reactants. The thermal reaction produced by the combination of solute and solvent can be either endothermic or exothermic and therefore can be used to apply cold or hot therapy, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.