Tub apparatus
AssigneeSoftub, Inc.
InventorsJohn M. Popovich, Roc V. Fleishman
Life of this patent
Estimating the term…
Abstract
A water supply and heating package, for a hot tub, spa, or pool comprising (a) a support, (b) water circulating structure carried by said support and including a pump and connections circulating water from and toward the interior of the hot tub, spa or pool, (c) said structure including an electric motor connected in driving relation with said pump, and including a shunt duct connected with said water circulating structure and located to receive heat generated by operation of said motor to heat a side stream of said water passing through said shunt duct. Also, the apparatus may include a foamed plastic sheet or sheets wound in a spiral to form multiple layers, and defining an insulative, upstanding side wall of a tub, and a bottom wall attached to the side wall.
Claims10
A spa tub comprising,
- (a) a multi-layered, upstanding insulative annular side wall having an inner and an outer surface, said side wall being formed from an outer-most sheet layer of foamed plastic sheet material followed by alternating sheet layers of glass fiber reinforcement screen material and sheet layers of foamed plastic material, each successive fiber sheet layer and foamed plastic sheet layer being applied to said outer sheet layer by winding in a spiral fashion about an axis passing through the center of the space enclosed by said side wall, successive foamed plastic sheet layers being fused together through openings defined by said screen material;
- (b) a bottom wall made up of parallel sheets of foamed plastic fused together, the bottom wall being bonded to the bottom of said side wall with said axis passing through said parallel sheets;
- (c) a water impermeable plastic jacket covering said inner surface of said side wall and overlying said bottom wall,
- (d) and including ports extending through said side wall and jacket, and water circulating means connected with said ports and including a pump for circulating water from and toward the interior of said tub.
Dependencies are inferred from the claim text.