Patent ID: 6621985
Filing Date: 2003-09-16
Classification: F24H

Abstract:
A spa system, comprising:a tub having sufficient size to accommodate an adult human; a powered pump; an electrical heater; a tubing system interconnecting said tub, pump, and said electrical heater to provide recirculating flow of water through said spa system; and wherein: said electrical heater includes a housing made of a polymer material and defining an internal passageway adapted for fluid flow through said housing, said housing having a first and second openings in fluid communication with said passageway, and a pair of access openings, said heater further including a heater tube defining a first end connected to said first opening in said housing in fluid communication with said internal passageway, said heater including an elongated electrical heating element at least partially disposed within said heater tube and having opposite ends extending out of said first end of said heater tube and through said pair of access openings, and wherein: said electrical heater includes a first compression fitting sealingly connecting said heater tube to said housing at said first opening, and a pair of compression fittings sealingly connecting said elongated heating element to said housing at said pair of access openings.