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:
Dec. 25, 1990
Filed:
Feb. 02, 1990
Applicant:
Inventor:
Charles A Walton, Los Gatos, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F27D / ; H05B / ;
U.S. Cl.
CPC ...
219432 ; 219 / ; 219 / ; 219386 ; 219521 ;
Abstract
A portable warming container having an electric heating element, a temperature sensor, a battery, a wire loop, and a control circuit. The wire loop is arranged to charge the battery through the control circuit, and the temperature sensor ultimately controls the current delivered to the heating element from the control circuit and battery.