Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
197 words
A heating device comprising: a thermo-conductive body having a heating surface, said surface having a pair of opposed parallel sides, said body including a relatively thick elongate portion beneath said surface and oriented generally parallel to a first one of said pair of sides and substantially intermediate therebetween said body being generally thinner beneath said surface adjacent said first pairs of sides, means defining an elongate cavity within said elongate portion of said body, chemical heater means disposed within said cavity, said heater means comprises a cylindrical shell closed at a first end and closed at its second end by percussion ignition means, said shell containing a quantity of compressed alumino-thermic reactive material ignitable by the discharge of said ignition means, firing pin means for igniting said heater, enclosure means enclosing substantially all but the heating surface of said body, said enclosure means comprising a generally planar wall disposed beneath said heating surface and parallel thereto and four side walls perpendicular to said planar wall, and insulating means within said enclosure means and surrounding said body means beneath said heating surface for preventing substantial dissipation of heat from said body means other than through said heating surface.
Claim 2
Dependent Claim
197 words
A heating device comprising: a thermo-conductive body having a heating surface, said surface having a pair of opposed parallel sides, said body including a relatively thick elongate portion beneath said surface and oriented generally parallel to a first one of said pair of sides and substantially intermediate therebetween said body being generally thinner beneath said surface adjacent said first pairs of sides, means defining an elongate cavity within said elongate portion of said body, chemical heater means disposed within said cavity, said heater means comprises a cylindrical shell closed at a first end and closed at its second end by percussion ignition means, said shell containing a quantity of compressed alumino-thermic reactive material ignitable by the discharge of said ignition means, firing pin means for igniting said heater, enclosure means enclosing substantially all but the heating surface of said body, said enclosure means comprising a generally planar wall disposed beneath said heating surface and parallel thereto and four side walls perpendicular to said planar wall, and insulating means within said enclosure means and surrounding said body means beneath said heating surface for preventing substantial dissipation of heat from said body means other than through said heating surface.
Claim 3
Dependent Claim
23 words
The invention set forth in claim 1 wherein said heating surface comprises at least one recess for receiving an item to be heated.
Claim 4
Dependent Claim
24 words
The invention set forth in claim 2 wherein said heating surface includes a plurality of elongate recesses therein for receiving items to be heated.
Claim 5
Dependent Claim
33 words
The invention set forth in claim 1 wherein said device additionally comprises a cover for at least said heating surface of said device, said cover comprising a thermo-conductive surface and an insulating surface.