초록 ▼

An electrical heating system for use in heating surfaces. A heating element is constructed of mesh screen comprised of nonferrous, small gauge metal wires which are spaced in a cloth mesh arrangement such that the total surface area of the wires is substantially equal to or greater than the adjacent

An electrical heating system for use in heating surfaces. A heating element is constructed of mesh screen comprised of nonferrous, small gauge metal wires which are spaced in a cloth mesh arrangement such that the total surface area of the wires is substantially equal to or greater than the adjacent area of the surface to be heated. The heating element is positioned substantially parallel to and adjacent the surface to be heated. The heating system includes electronic circuitry which essentially eliminates transmission of power surges, voltage spikes and chatter when the heating system is connected to an alternating current power source. The heating system also includes protective circuits and devices for preventing injury or damage due to transformer overheating, or due to under-current or over-current conditions. An optional electronic circuit permits use of the device for preventing formation of ice on surfaces in an efficient and economical manner.

대표청구항 ▼

An electrical heating system for use in heating surfaces, said heating system comprising: a low voltage heating element positioned substantially parallel to and adjacent the surface to be heated, said heating element comprising a nonferrous, thermally conducting mesh screen, said screen having a mes

An electrical heating system for use in heating surfaces, said heating system comprising: a low voltage heating element positioned substantially parallel to and adjacent the surface to be heated, said heating element comprising a nonferrous, thermally conducting mesh screen, said screen having a mesh density such that the total surface area of the mesh screen is at least substantially equal to the area of that portion of the surface to be heated which is within a perimeter defined by the edges of said screen; an alternating current power source; and means for connecting the power source to the heating element so as to substantially eliminate transmission of power surges onto the heating system.