Abstract: In order to achieve satisfactory defrosting without causing undue wear of the wiper blades equipped with double tongues of elastomer material, the invention provides for first freeing the tongues from the coating of ice by blowing hot air into the duct formed between said tongues, then raising the pivot shaft (24) of the blade holder, and therefore the tongues, by applying an axial thrust to said shaft by means of the piston (27) of a jack (86) while retaining parallelism between the tongues and the windshield. The connection, preventing rotation but allowing free axial sliding, between the shaft (24) and the driving connecting rod (29) makes it possible for the shaft to pivot both in the raised position, while passing a current of hot air over the ice from the windshield wiper which has been lifted off the windshield, and in the lowered position in which the tongues bear against the windshield.

Abstract: A massaging device designed for hydrotherapy is provided with an hydromechanical drive capable of operating effectively in any position, even when the device is held in a vertical position or upside down.The device comprises a paddle wheel (6) energized by water flowing from the mains through a duct (3) converging towards a distributor (5) from which the water flows tangentially to the wheel (6). Beyond the distributor, the water stream is smoothly guided by a gradually diverging arcuate side wall (16) towards an exhaust channel (18) lined by a concave wall (20) for directing the exhaust jet towards the massaging balls (12) which are freely rotating on studs (13) fixed on the tip of a drive shaft (11). This drive shaft is driven by the turbine wheel through a reducing gear enclosed in a water-tight housing (25), separated from the water circuit.