The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2002
Filed:
Jan. 24, 2001
Daniel J. Kohout, Grayslake, IL (US);
Allegiance Corporation, McGaw Park, IL (US);
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.