Patent ID: 11877358
Assignee: IGNIK OUTDOORS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  A | IPC A  H

Claim 3:
4. A portable occupant warming system for use in a frigid climate, comprising:
a multi-layer warmth delivery structure having an aggregate mass density less than 500 grams per square meter and an average thickness of roughly 0.9 millimeters both across a first layered area thereof of roughly 300 to 3000 square centimeters, wherein said first layered area of said multi-layer warmth delivery structure comprises at least an electrically resistive first layer, a structural second layer comprising numerous fibers, and an infrared-redirecting third layer;
one or more conduits configured to pass a first electrical current through at least said electrically resistive first layer so as to generate infrared energy within said first layered area of said multi-layer warmth delivery structure, wherein said infrared-redirecting third layer is configured to cause a redirected first component of said infrared energy within said first layered area to pass through said electrically resistive first layer, through said structural second layer, and into an occupiable space adjacent said multi-layer warmth delivery structure, wherein said redirected first component and a non-redirected second component of said infrared energy passing into said occupiable space adjacent said multi-layer warmth delivery structure together constitute a majority of said infrared energy emitted from said multi-layer warmth delivery structure, and whereby said majority of said infrared energy emitted from said multi-layer warmth delivery structure is configured to warm said occupiable space; and
wherein said structural second layer is positioned on a first side of said multi-layer warmth delivery structure adjacent said occupiable space, wherein said numerous fibers of said structural second layer are less than 70 d (denier), wherein a structural fourth layer is affixed to a second side of said multi-layer warmth delivery structure opposite said first side, and wherein said structural fourth layer comprises numerous fibers that are greater than 10 d and less than 100 d.