초록 ▼

A soft heating element utilizing individually insulated electrically conductive carbon or metal containing threads/fibers or metal wires that are woven together with nonconductive threads, into sheets, sleeves or strips. The individually insulated conductive threads/fibers or metal wires can be lami

A soft heating element utilizing individually insulated electrically conductive carbon or metal containing threads/fibers or metal wires that are woven together with nonconductive threads, into sheets, sleeves or strips. The individually insulated conductive threads/fibers or metal wires can be laminated between layers of nonconductive insulation. Nonconductive polymer insulation can be extruded around the non-insulated electrically conductive threads/fibers or metal wires to form strips, sheets or sleeves/pipes. The heating element core is shaped in a desired pattern and connected in parallel or in series to the energizing bus conductors. The thermostats are located in areas of folds in order to control their cycling. When dictated by the heating element design, the electrically conductive threads/fibers have a polymer base, which acts as a Thermal-Cut-Off (TCO) material at predetermined temperatures. Metal fibers or metal wires, incorporated in the heating element core, may be utilized as temperature sensors.

대표청구항 ▼

1. A soft and flexible heating element having a durable construction for incorporation into a plurality of articles, said heating element comprising:at least one continuous electrically conductive strip, comprising metal containing threads, said strip is cut to a desired length and laid out in prede

1. A soft and flexible heating element having a durable construction for incorporation into a plurality of articles, said heating element comprising:at least one continuous electrically conductive strip, comprising metal containing threads, said strip is cut to a desired length and laid out in predetermined pattern to fit the heated area, providing that said soft heating element comprises at least one gap between portions of at least one of said strips; a conductive means for introducing an electrical current to said strip, an insulating means for insulating at least said electrically conductive threads with nonconductive means.