Abstract: A buoyancy compensator jacket capable of following movements of a body of a diver and providing a stable holding feeling is provided. A harness in the buoyancy compensator jacket includes shoulder belts, a harness main body disposed to face a back side of the diver, and a size adjusting means that can change a back length of the harness main body in a plurality of stages.

Abstract: The fastening device for the air cylinder includes a belt having a first end portion and a second end portion, a coupling ring attached to the first end portion of the belt, and a buckle to which the second end portion of the belt is attached. The buckle includes locking grooves in which locking portions of the coupling ring are releasably locked. The locking grooves include openings that gradually widen toward a rear face side. The front face of the buckle includes bent portions that are brought into contact with an outer circumferential face of the air cylinder when coupling between the belt and the coupling ring is released.

Abstract: A diving mask includes a nose cover and a valve seat of a drainage mechanism having a check valve formed in the vicinity of the nose cover. The nose cover and the value seat are formed from an elastic material which is integral with a soft elastic material forming the nose cover. In the vicinity of the valve seat, an annular member formed from a plastic material plastics having a hardness and deformation-resistance both higher than those of the elastic material forming the valve seat is embedded in a bottom of the nose cover so as to extend along the valve seat.

Abstract: Swimming goggles includes lens assemblies and pad assemblies attached to peripheral frames of the respective lens assemblies. Each of the pad assemblies is formed by a first elastic member made of first elastic material which is relatively stiff and a second elastic member made of second elastic material which is relatively flexible wherein the second elastic member is in close contact with and bonded to the first elastic member in a radial direction of the lens assembly.

Abstract: A diving mask includes a nose cover and a valve seat of a drainage mechanism having a check valve formed in the vicinity of the nose cover. The nose cover and the value seat are formed from an elastic material which is integral with a soft elastic material forming the nose cover. In the vicinity of the valve seat, an annular member formed from a plastic material plastics having a hardness and deformation-resistance both higher than those of the elastic material forming the valve seat is embedded in a bottom of the nose cover so as to extend along the valve seat.

Abstract: Swimming goggles includes lens assemblies and pad assemblies attached to peripheral frames of the respective lens assemblies. Each of the pad assemblies is formed by a first elastic member made of first elastic material which is relatively stiff and a second elastic member made of second elastic material which is relatively flexible wherein the second elastic member is in close contact with and bonded to the first elastic member in a radial direction of the lens assembly.

Abstract: Here is disclosed a snorkel comprising a mouthpiece section, an open end section, a tubular section being contiguous to the open end section and a connector section interposed between the mouthpiece section and the tubular section and provided with a check valve. First and second halves constituting the connector section are pressed against each other along respective peripheral edges of these halves and then covered with a belt-like section welded to the connector section from the outside.

Abstract: Here is disclosed a snorkel comprising a mouthpiece section, an open end section, a tubular section being contiguous to the open end section and a connector section interposed between the mouthpiece section and the tubular section and provided with a check valve. First and second halves constituting the connector section are pressed against each other along respective peripheral edges of these halves and then covered with a belt-like section welded to the connector section from the outside.

Abstract: A diving face mask 1 has a skirt 3 of which a part forms a nose cover 9. The nose cover 9 has a bottom wall 12 configured so that the inner surface of the bottom wall 12 facing nares of a wearer of the mask curves along transversely middle portion 13 of the inner surface so as to protrude inwardly of the nose cover 9 with respect to the portions of the inner surface extending on both sides of the middle portion 13.

Abstract: A diving face mask 1 has a skirt 3 of which a part forms a nose cover 9. The nose cover 9 has a bottom wall 12 configured so that the inner surface of the bottom wall 12 facing nares of a wearer of the mask curves along transversely middle portion 13 of the inner surface so as to protrude inwardly of the nose cover 9 with respect to the portions of the inner surface extending on both sides of the middle portion 13.

Abstract: A face mask for diving includes a pair of front lenses and a nose cover formed by a portion of a skirt between these lenses. Proximal ends of the nose cover and a portion of the skirt being contiguous to these proximal ends are curved along the lens frame with the lenses held therein closely in contact with an inner peripheral surface and an inner surface of the lens frame.

Abstract: A face mask is provided with buckles, each of the buckles including a first support member and a second support member. A head strap is guided and folded back by the first support member. A spring extending in a width direction of the head strap is inserted from the front or the lateral side of the face mask into a space defined between distal ends of the first and second support members.

Abstract: A face mask for diving includes a pair of front lenses and a nose cover formed by a portion of a skirt between these lenses. Proximal ends of the nose cover and a portion of the skirt being contiguous to these proximal ends are curved along the lens frame with the lenses held therein closely in contact with an inner peripheral surface and an inner surface of the lens frame.

Abstract: A face mask is provided with buckles, each of the buckles including a first support member and a second support member. A head strap is guided and folded back by the first support member. A spring extending in a width direction of the head strap is inserted from the front or the lateral side of the face mask into a space defined between distal ends of the first and second support members.

Abstract: A diving face mask including a lens, a main frame and a lens holding frame. The main frame and the holding frame are integrally interlocked together by first projections and second recesses arranged between an outer peripheral surface of the main frame and an outer edge of the holding frame covering this outer peripheral surface.

Abstract: A diving face mask comprising a purge valve is mounted in a predetermined region extending along a top and transversely opposite sides of a frame thereof and a tubular water purge channel provided inside said frame, said purge channel having an outlet at its upper end being in fluid-communication with said purge valve and an inlet at its lower end being open into said frame.

Abstract: A diving face mask comprising a pair of front lenses detachably engaged in lens holding portions of an outer peripheral frame and, annular inner peripheral frames to be snapped in the lens holding portions so as to bear against front surfaces of the lenses, said annular inner peripheral frames being cut away partially in the circumferential direction thereof and therefore being discontinuous circumferentially.

Abstract: A diving snorkel having a ventilating portion comprising an assembly of a first pipe portion and a second pipe portion extending in parallel to and communicating with each other, and a main pipe of which the upper end is connected to the first pipe portion, wherein the second pipe portion is provided at its upper end with an air inlet and at its lower end provided with means to prevent the undesirable flow of water into the main pipe 2 through the air inlet as a diver is in the water.