US 12,349,833 B1
Portable food warmer
Julanna C. Hanson, Fort Lauderdale, FL (US)
Filed by Julanna C. Hanson, Fort Lauderdale, FL (US)
Filed on Nov. 30, 2021, as Appl. No. 17/538,102.
Claims priority of provisional application 63/119,053, filed on Nov. 30, 2020.
Int. Cl. A47J 36/24 (2006.01); A47J 36/32 (2006.01); B65D 81/34 (2006.01); H05B 1/02 (2006.01); H05B 3/06 (2006.01)
CPC A47J 36/2483 (2013.01) [A47J 36/32 (2013.01); B65D 81/3476 (2013.01); H05B 1/0225 (2013.01); H05B 1/0261 (2013.01); H05B 3/06 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A portable food warmer consisting of:
a base having a base first segment forming a floor of the base, a base second segment attached to and nesting within the base first segment or expanding away therefrom, and a base third segment attached to and nesting within the base second segment or expanding away therefrom, wherein the base defines a base interior and comprises an inert and resilient material capable of withstanding impact forces and elevated temperatures;
a cover having an open bottom end and an elastic band disposed along a perimeter of the open bottom end, the cover being a flexible dome-like structure removably securable to a perimeter edge of the base and configured to cover the base interior, the cover comprising an electrical heater disposed in an interstitial space between the cover and a plurality of vents formed along an interior surface of the cover, wherein each of the vents is in fluid communication with the electrical heater to direct thermal energy to the base interior;
a controller in electrical communication with the electrical heater via a primary electrical cord and a secondary electrical cord, the controller having a controller interface configured to provide specific heating capabilities including at least a timer or a rheostat;
a voltage-current-frequency regulator in communication with the secondary electrical cord and configured to convert power from one of a twelve-volt direct current cord, a one hundred twenty-volt alternating current plug, or a USB power cord into a fixed voltage, current, and frequency output suitable for the electrical heater; and,
a thermal bag having a bag interior, a flap extending from one side of the thermal bag with a first fastener disposed on an exterior of the flap, and a second fastener disposed on an opposing side of the thermal bag and configured to mate with the first fastener to enclose the foodstuffs held within the bag interior, wherein the thermal bag is formed from a material configured to inhibit thermal communication between the bag interior and an external environment.