Abstract: A diving mask having a rigid frame with a front perimeter edge and a rear perimeter edge. The frame provides an upper portion and a lower portion connected by first and second lateral portions. The mask also includes a visor of a transparent material and fixed to the frame, and an inhalation duct, or snorkel. Inside the frame a face member made of a soft and flexible material is arranged in contact with the user's face. A partition member divides the volume between the visor and the face member in an upper chamber pneumatically connected to the inhalation duct, or snorkel, through an opening, and in a lower chamber arranged to house the nose and the mouth of the user. A discharge duct pneumatically connects the lower chamber with an exit mouth.

Abstract: A diving mask (1) comprising a rigid frame (10) having a front perimeter edge (11a) and a rear perimeter edge (11b). The rigid frame (10) provides an upper portion (12) and a lower portion (13) connected by a first and a second lateral portion (14a, 14b). The mask (1) provides, furthermore, a visor (20) made of a transparent material and fixed to the rigid frame (10) and an inhalation duct, or snorkel, (30) for inhaling the air during inspiration. Inside of the rigid frame (10) a face member (40) is fixed that is made of a soft and flexible material configured to be arranged, in use, in contact with the user's face. A partition member (43) divides the volume between the visor (20) and the face member (40) in an upper chamber (21) pneumatically connected to the inhalation duct, or snorkel, (30) through at least an opening (44), and in a lower chamber (22) arranged to house, in use, the nose and the mouth of the user.

Abstract: A diving mask which includes a face-piece having, formed therein, one or more openings for housing one or more lenses, means for fixing the lenses inside the face-piece, and means for connecting the mask to the diver's head. The face-piece is formed by at least two portions which are stably connected together, where the two portions are respectively made using two materials which are different at least from the point of view of the rigidity, with one of the two materials being more rigid than the other one.

Abstract: Buckle for adjusting the strap in equipment for practicing water sports, such as diving goggles, swimming goggles or the like, said strap being provided at at-least one end with a plurality of transverse reliefs, said buckle comprising a body provided with means for driving said end of the strap and with an engaging tooth which is normally kept in a position engaged with said reliefs of said strap, against said drive means, there being envisaged operating means able to disengage said engaging tooth from said reliefs, comprising means with an inclined surface co-operating with said engaging tooth and movable in a direction substantially parallel to the longitudinal axis of the end of said belt.

Abstract: Buckle for adjusting the strap in equipment for practicing water sports, such as diving goggles, swimming goggles or the like, said strap being provided at at-least one end with a plurality of transverse reliefs, said buckle comprising a body provided with means for driving said end of the strap and with an engaging tooth which is normally kept in a position engaged with said reliefs of said strap, against said drive means, there being envisaged operating means able to disengage said engaging tooth from said reliefs, comprising means with an inclined surface co-operating with said engaging tooth and movable in a direction substantially parallel to the longitudinal axis of the end of said belt.

Abstract: Buckle for tensioning the straps of fins or the like, having quick and simple fastening and unfastening means, comprising a base part designed to be attached to one side of the shoe of the fin, an intermediate lever hinged at one end by hinge pins to the said base part, and a terminal part which carries at one end the means of connection to the fin attachment strap, while its other end is hinged by the pins at a point on the said lever situated between the end hinged to the base part and its free end, characterized in that the lever possesses on its two flanks, near its free end, two elastically flexible wings, each having a tooth and an outwardly projecting pin, while the base is provided, likewise on each flank, in positions corresponding to the said teeth and to the said pins, with means for engaging with the said teeth, and for housing the said pins.