Patent ID: 6194686
Filing Date: 2001-02-27
Classification: H05B

Abstract:
A portable ground thawing panel system, comprising:an upper member having an upper surface and a lower surface;a pair of side outer members and a pair of end outer members extending orthogonally downwardly from an outer perimeter of said lower surface defining an enclosed rectangular area, wherein said side outer members are at least twice as long as said end outer members;a layer of insulation positioned adjacent said lower surface of said upper member;a plurality of cross members extending between said side outer members and positioned adjacent said layer of insulation opposite of said upper member, wherein said plurality of cross members are comprised of wood;a divider member comprised of a heat reflective material attached between said side outer members and said end outer members and attached to said plurality of cross members opposite of said layer of insulation, wherein said divider member and said outer members define a lower heating cavity; andan electrical heating element having a sinusoidal pattern secured to said divider member opposite of said plurality of cross members.