초록 ▼

A heater immersible in liquids such as water suitable for water beds and a method for producing the heater are disclosed. The heater includes two-spaced apart metallic electrodes interconnected by a conductive polymeric matrix. A water-impermable barrier completely surrounds the polymeric matrix. A

A heater immersible in liquids such as water suitable for water beds and a method for producing the heater are disclosed. The heater includes two-spaced apart metallic electrodes interconnected by a conductive polymeric matrix. A water-impermable barrier completely surrounds the polymeric matrix. A jacket of plasticized polyvinyl chloride can be placed around the barrier. The barrier also prevents plasticizer from the polyvinyl chloride from penetrating and damaging the conductive polymeric matrix.

대표청구항 ▼

A flexible, electrically conductive, temperature self-limiting heater suitable for immersion in water comprising: (a) two spaced apart metallic electrodes; (b) an electrically conductive polymeric composition interconnecting the electrodes; (c) an electrically insulating prejacket around the polymer

A flexible, electrically conductive, temperature self-limiting heater suitable for immersion in water comprising: (a) two spaced apart metallic electrodes; (b) an electrically conductive polymeric composition interconnecting the electrodes; (c) an electrically insulating prejacket around the polymeric composition; (d) a flexible, corrosion resistant, electrically non-conductive, water impermeable barrier around the insulating prejacket, the barrier comprising an inner sheet of polyester film, a flat strip of aluminum, and an outer sheet of polyester film; (e) an electrically conductive grounding braid around the barrier; and (f) an electrically insulating polymeric outer jacket.