Abstract: The mask for surface snorkeling comprises a rigid frame (2), a transparent visor (3), a soft face mask (4) applicable in an airtight way to the face of the user and having a membrane (7) which delimits an upper viewing chamber (8) being shaped to contain the eyes of the user and a lower breathing chamber (9) being shaped to contain the nose and mouth of the user, and a breathing circuit (5) connected to the lower chamber (9), a ventilation circuit of the upper chamber (8) independent and separated from the breathing circuit (5) also being provided.

Abstract: A protective shroud for a dive watch having a transparent lenticular element configured to enlarge an image appearing on a dial of the dive watch. The shroud can include a rib that distances the lenticular element from the dial, and a flange that extends around the lenticular element and includes two slots for fixing a strap of the dive watch. The shroud can be made of a single piece of elastic material.

Abstract: The diving mask includes a rigid frame, one or two lenses, and a face mask made of soft and elastically yielding material, the face mask having a front hollow projection for housing the nose of the diver and a rear perimeter profile applicable in an airtight way to the face of the diver so as to delimit an internal space between the mask and the face of the diver, the internal surface of said face mask being equipped with obstructing means obstructing a direct flow towards lenses of the air released from the diver nose.

Abstract: A breathing device for divers that includes a breathing tube exhibiting an end having an inclined opening, an obturator that is mobile between an open position and a closed position of the opening of the end, a float that activates the obturator, a first articulator that communicates the obturator to the tube, a second articulator that communicates the float to the tube. The first and the second articulators can each exhibit a respective hinge axis to the tube. The hinge axis to the tube of the second articulator can be more greatly distanced from the end of the tube relative to the hinge axis to the tube of the first articulator.

Abstract: Heel strap (2) for swimming fins (1) with an open foot pocket (101), characterized in that it comprises a tubular element (3) made of elastomeric material with a hole (103) and end elements (4, 8) for coupling to the foot pocket (101) of the fin (1), each end element (4, 8) being provided with a seat (404, 408) in which at least one constriction (504, 508) is produced and through which, on one side, an end of the tubular element (3) is inserted, which is consequently elastically compressed at said constriction (504, 508) and expands after passing through the same, there being inserted on the other side of said seat (404, 408) and of said constriction (504, 508) an element (7) for locking the length of tubular element (3) that has passed through said constriction (504, 508) in the hole (103), so as to elastically expand it and to prevent, in combination with said constriction (504, 508), said tubular element (3) from being separated from said end coupling elements (4, 8) to which it is thereby permanently coup

Abstract: A diving mask including at least one lens, a facepiece made of a soft and elastically yielding material, provided with at least a front positioning opening that positions the at least one lens, and a rear profiled element that rests on a user's face. Also included is a rigid frame that includes a first frame element and a second frame element anterior to the first frame element, fixed to one another such as to guarantee a seal between the facepiece and the lens. The front positioning opening of the facepiece can exhibit, along a perimeter edge thereof, a hollow positioning flange for the first frame element, the hollow positioning flange extending from an internal side of, and at least partially posteriorly to, the front positioning opening of the facepiece.

Abstract: A device for reversible connection between a casing for lead weights and a corresponding pocket of a diving jacket is described. The device has an elastically insertable and releasable buckle with a male part connected to the casing through a rigid plate and with a sheath, acting as the female part of the buckle, connected to the pocket of the jacket. The rigid plate presents lateral guide ribbings, suitable for facilitating insertion of the male part of the buckle in the sheath.

Abstract: A diving mask including at least one lens, a facepiece made of a soft and elastically yielding material, provided with at least a front positioning opening that positions the at least one lens, and a rear profiled element that rests on a user's face. Also included is a rigid frame that includes a first frame element and a second frame element anterior to the first frame element, fixed to one another such as to guarantee a seal between the facepiece and the lens. The front positioning opening of the facepiece can exhibit, along a perimeter edge thereof, a hollow positioning flange for the first frame element, the hollow positioning flange extending from an internal side of, and at least partially posteriorly to, the front positioning opening of the facepiece.

Abstract: A breathing device for divers that includes a breathing tube exhibiting an end having an inclined opening, an obturator that is mobile between an open position and a closed position of the opening of the end, a float that activates the obturator, a first articulator that communicates the obturator to the tube, a second articulator that communicates the float to the tube. The first and the second articulators can each exhibit a respective hinge axis to the tube. The hinge axis to the tube of the second articulator can be more greatly distanced from the end of the tube relative to the hinge axis to the tube of the first articulator.

Abstract: A second-stage regulator for scuba divers is disclosed that reduces considerably the inhalation effort required by the user through reduction in friction between selected components of the regulator. A flexible sleeve is sealingly connected to the regulator poppet and the baffle, and coaxially with the poppet, so as to avoid blow-by of gaseous mixture through an opening in the baffle. A tail of the poppet extends through the opening, the tail being connected to a lever of the regulator projecting into an outlet chamber thereof. The head of the poppet is or includes a ferrule with an at least partially-circular profile and abuts a selected inner portion of the inlet's intermediate chamber to allow oscillation of the poppet. The lever end of the regulator contacts a diaphragm, the diaphragm separating the outlet chamber from the external environment.

Abstract: A spear gun for scuba diving that comprises a frame with a body that is generally elongated along a longitudinal axis of the gun, and a grip at one end of and extending from the elongated body. The grip includes a stationary part attached to, and integrally with, the body and a movable part adjustably mounted to the stationary part. A device is also provided for securing or locking the movable part to the stationary part when a desired grip configuration has been achieved.

Abstract: A swimming fin comprising a blade extending from a shoe open at its rear side, and a rear heel strap connected to the sides of the shoe by at least one buckle, the buckle having a base plate integral with the shoe. A buckle arm is joined with the strap so as to allow adjustment of the strap's tension, an intermediate lever being connected pivotally to the base plate and the arm. A reversible attachment member is also provided for connecting the intermediate lever to the base plate to achieve closure of the buckle. Between the intermediate lever and the base plate, a disengageable articulation member is provided for reciprocal engagement between them, a pivotal connection, and, at the same time, for allowing their separation in a direction opposite to that of tensioning the strap. In this manner, the intermediate lever may be separated from the base plate following release of the attachment member, and disconnection of the disengageable articulation member.

Abstract: A device is provided for locking a front end of a spear shaft in a spear gun. The device comprises a bridge extending crosswise over a distal end of the gun with a substantially U-shaped nosepiece joined to the distal end and revolving relatively freely about a crosswise axis thereof. The nosepiece includes at least two arms connected to respective ends of a relatively elastic cable that may be tensioned against a rear end of the shaft, when the shaft is placed on a support surface along the body of the gun. The bridge is attached to and integrally with the ends of the elastic cable and is located a selected distance from the support surface such that the shaft is retained against the surface when the spear is in a stowed or loaded position.

Abstract: A device is provided for releasing a spear shaft of a spear gun for scuba diving or the like. The shaft has a latch element formed on a first lever pivotally connected at its front end to a screw attached to and integrally with a frame of the gun, the lever being maintained elastically in a resting position. The gun has a trigger with an abutment portion forced elastically against the front end of the first lever extending forward of a convex upper surface. The convex upper surface intersects a concave surface at an edge that traces a first circular trajectory when the trigger is rotated. A second lever is rotatably connected to the frame, the front end of the second lever being movable along a second circular trajectory intersecting the first circular trajectory.

Abstract: A scuba diving mask with corrective lenses comprising a frame with a plurality of rings joined to one another by a bridge, each of the rings having an internal flange on which the lip of a flexible skirt, a corresponding lens and a lens-retaining collar rest. The collar is attached by snap action to the corresponding ring. A seat is formed in a bridge substantially in the lying plane of, or coplanar with, the lenses and extending laterally to an upper internal portion of the rings. The seat includes a locking plate slidable between opposing end stroke positions - a locking end position and a release end positions respectively. When the locking plate is in the locking position, the lateral sides of the plate extend inside the rings and are engaged with corresponding notches in an upper internal rim of the lens-retaining collars.

Abstract: A closure device of a second-stage regulator for scuba divers, the regulator comprising a regulator body with an inlet conduit for connection to a first-stage regulator which supplies a breathable gaseous mixture at relatively constant pressure, an outlet conduit for connection to a mouthpiece of the users, and an opening closed by a deformable diaphragm. The device comprises a locking frame connected in an articulated manner or jointedly to the regulator body to lock the diaphragm in the opening, and a member for fastening the frame to the regulator body.

Abstract: A device for releasably connecting a weight pouch to a pocket of a scuba diving jacket. The device comprises a relatively flat sheath connected to and integrally with the diving jacket. A latch member is attached to the weight pouch, the latch member having arms that are elastically deformable in a plane of the sheath and sides tapered relative to a longitudinal plane of symmetry of the sheath to provide snap closure when the latch member is inserted in the sheath. An inward ly-projecting abutment inside the sheath engages ends of the arms when the device is in a closed position, thereby preventing the latch member from sliding out of the sheath. A member is provided for bending the arms of the latch member so as to release them from a position such that they meet the abutment and enable the device to be opened. The bending member includes a cap slidingly mounted on the latch member and contains tapered projections for engaging the tapered sides of the arms.

Abstract: A swimming fin comprising a blade extending from a shoe open at its rear side, and a rear heel strap connected to the sides of the shoe by at least one buckle, the buckle having a base plate integral with the shoe. A buckle arm is joined with connected to the strap so as to allow adjustment of the strap's tension, an intermediate lever being connected pivotally to the base plate and the arm. A reversible attachment member is also provided for connecting the intermediate lever to the base plate to achieve closure of the buckle. Between the intermediate lever and the base plate, a disengageable articulation member is provided for reciprocal engagement between them, a pivotal connection, and, at the same time, for allowing their separation in a direction opposite that of tensioning the strap. In this manner, the intermediate lever may be separated from the base plate following release of the attachment member, and disconnection of the disengageable articulation member.

Abstract: A group for controlling a second-stage regulator for scuba divers. The regulator comprises a regulator body with an inlet conduit for connection to a first-stage regulator which supplies a breathable gaseous mixture at a constant pressure and an outlet conduit for connection to a mouthpiece of the user. The group comprises a first bushing defining an intermediate chamber with a bottom wall wherein a central hole is formed, a poppet loosely engaged within the hole, the end of the poppet being connected to lever means, a second bushing engaged in the first bushing and defining an inlet chamber and a third bushing engaged in the second bushing and defining a regulator seat at one of its ends. The head of the poppet engages tightly in the seat and an elastic member is provided coaxial to the poppet in the intermediate chamber for maintaining the head against the regulator seat.