Low mass flexible heating means

A flexible zoned heating means comprising in combination:

• flexible heat transfer means formed of a low mass metal strip having first and second sides;
• a plurality of electrical resistance means, each formed into a meandering path and each formed to have independent terminal means;
• flexible electrical insulating means formed to substantially encase each of said plurality of electrical resistance means and formed to leave each of said terminal means available for connection to a different source of electrical current, said flexible electrical insulating means secured to said second side of said flexible heat transfer means whereby each electrical resistance means defines a heatable zone on said first side of said flexible heat transfer means;
• a plurality of electrical current generating means with each connected to a different one of said plurality of electrical resistance means to transmit electrical current thereto to cause heat to be generated, whereby when each of two of said electrical current generators transmits a different amount of electrical current to its connected electrical resistance means, the heat generated along said heat transfer means, through its first side, is different for each zone defined by said electrical resistance means conducting different valued electrical currents.