Method of forming a tub apparatus

Details Method of forming a tub apparatus Method of forming a tub apparatus

1990-11-19

1992-07-28

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156191, 156193, 4584, B31C 1300, B65H 8100, A61H 3300, A47K 300

Patent

active

051338181

ABSTRACT:
Tub apparatus includes a foamed resiliently compressible plastic tub wall having an inner side and an outer side, the tub having an interior to receive liquid; a tensile liner adjacent the wall side, the liner and characterized in that it resists outward expansion in response to loading exerted by liquid filled into the tub interior; and including ports extending through the side wall and liner for circulating liquid between the interior of the tub and the exterior thereof. The plastic wall is typically locally heat cored in situ and provided with elbow fittings having venturis for efficient water, and water and air flow.

REFERENCES:
patent: 2734459 (1956-02-01), Zimsky
patent: 3300355 (1967-01-01), Adams
patent: 3337384 (1967-08-01), Wright
patent: 3734811 (1973-05-01), Small et al.
patent: 3923573 (1975-12-01), Hay
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patent: 4546900 (1985-10-01), Lackey
patent: 4579617 (1986-04-01), Oberg
patent: 4699288 (1987-10-01), Mohan
patent: 4843659 (1989-07-01), Popovich et al.
patent: 4858254 (1989-08-01), Popovich et al.
patent: 4981543 (1991-01-01), Popovich

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