Abstract: A hydromassage bathtub with ultrasound micromassage system comprising a plurality of ultrasound emission devices (13, 113) distributed over the walls of the bathtub. The ultrasound emission devices (13, 113) comprise means (23, 26; 118, 125) for orientating the direction of emission of the ultrasounds into a wide beam, at least 10 cm. wide at a distance of 20 cm. from the source. In case of conical beam, the means orient the beam into a solid angle of not less than 30.degree. and advantageously at least 50.degree.. With one ultrasonic emitting element (24) inside the emission device the emission beam obtained is superior to the natural width or divergence of said element.

Abstract: A bathtub is equipped with a water supply tap (11) and a hydromassage system comprising a plurality of nozzles (12) on the walls of the bathtub (10) to each of which nozzles there are supplied flows of water and air coming from respective delivery (13) and supply (14) lines. The flow of water is taken off by means of a pump (15) having a suction line (17) connected to the container part of the bathtub (10), while the delivery line (13) is connected to the nozzles (12). The suction line (17) is connected to the container part of the bathtub (10) through the intermediary of a suction valve (16) which is normally closed, and each nozzle (12) comprises a plug (69) which is normally closed, so as to separate in a sealed manner the delivery (13) and supply (14) lines from the container part of the bathtub (10). With the plug (69) there is also associated a manually actuated conduit for partializing the flow.