1
Clifford Plone: Method of fabricating inflatable bathing tub and associated support apparatus. William W Haefliger, September 13, 1994: US05345622 (32 worldwide citation)

The method of forming an inflatable tub that includes shaping inner and outer plastic sheets to form tub upright side walls and end walls, and corners between the walls; bonding the sheets at each wall to form panels bonded together at certain locations, and introducing inflation fluid between the s ...


2
Susan Myers Younker: Inflatable bathing tub. May 17, 1977: US04023220 (13 worldwide citation)

An inflatable bathing tub has a size whereby it may be conveniently placed into a shower stall. The tub is fabricated of an attached and ascending series of interconnected inflatable annular tubes, preferably of increasing diameters. Drainage means allow the tub to be conveniently drained into the s ...