Abstract: A diving mask includes a transparent visor, a frame, a gasket to guarantee the watertight seal and appropriate belts for fitting the mask, a breathing tube associated with the facial part is fitted onto the upper part of the mask and which enables the flow of air to enter into the compartment between the frame and the visor. The path of air in the inhalation phase and in the exhalation phase both in the mask and tube are different from each other. The tube is made with separate ducts for inhalation and exhalation and the inside of the mask is made with two compartments, one upper front and one lower oronasal separated by a wall. The path provides that inhalation air is introduced by the tube into the frontal compartment and then into the oronasal one and air exhaled from the oronasal compartment travels up to the tube.

Abstract: This disclosure describes a full-face type mask for underwater use. The mask is provided with a mouthpiece to enable the wearer to breathe with his/her head under the surface of the water. The mask is also provided with a communication device.

Abstract: A full face mask equipped with an inlet air filter includes a transparent visor, a frame or strap, preferably a rubber gasket designed to guarantee water tightness and appropriate straps to fit the mask on the face. The mask has a fitting which engages on the upper part of the mask in an inspiration mouth and which allows the flow of air to enter the space created between the frame and the viewer. This fitting includes a coupling portion to this mouth and on the opposite side a seat for the attachment of a filtering system of the air entering the mask.

Abstract: A greenhouse for underwater cultivation of terrestrial plant species comprising a dome (2) suitable for being filled with air in an underwater environment, provided with an aperture (21) for lower access and made of a material that is impermeable to water and permeable to light, such dome comprising means for restraining to the sea floor, and means for adjusting the level of water/air in the dome itself which must ensure that plant species cultivated in the greenhouse always reside above such level. Inside such dome a system for the automatic irrigation of the cultivated plants is present comprising a tubular structure (3) on which a plurality of mutually spaced holes (31) is provided, inside which supports are placed for housing and cultivating plant species, irrigation water flowing inside such tubular structure and irrigating such supports in order to achieve a hydroponic culture.

Abstract: A diving mask includes a transparent visor, a frame or strap, a gasket to guarantee the watertight seal and appropriate belts for fitting the mask, a breathing tube associated with the facial part is fitted onto the upper part of the mask and which enables the flow of air to enter into the compartment between the frame and the visor. The path of air in the inhalation phase and in the exhalation phase both in the mask and tube are different from each other. The tube is made with separate ducts for inhalation and exhalation and the inside of the mask is made with two compartments, one upper front and one lower oronasal separated by a wall. The path provides that inhalation air is introduced by the tube into the frontal compartment and then into the oronasal one and air exhaled from the oronasal compartment travels up to the tube.

Abstract: A diving mask includes a faceplate secured to a frame, a flexible skirt having a partition delimiting an upper viewing chamber from a lower breathing chamber, a snorkel having an inlet channel for inhaled air and at least one escape channel for exhaled air, the snorkel being a continuation of the upper part of the frame, the inlet channel for inhaled air leading into the upper chamber, whilst the first escape channel for exhaled air communicates with the lower chamber. The frame is rigid and inside the frame there is arranged at least one first inner duct for exhaled air having an upper end leading into the escape channel for exhaled air, and a lower end in fluid communication with the lower chamber.

Abstract: A full face diving mask having a transparent visor (2), a frame or strapping (3), a sealing skirt (4) to ensure the water-tight seal, and suitable straps (5) for fitting the mask on the user's face. The mask has a breathing tube (6) which engages on the tipper part of the mask and which allows the flow of air to enter into the compartment made between the frame and the visor. The breathing tube is made with separate ducts for the air inhaled and exhaled and the inside of the mask is made with two compartments, an upper main compartment (26) and a lower oronasal compartment (7) separated by a separating wall.

Abstract: A greenhouse for underwater cultivation of terrestrial plant species comprising a dome (2) suitable for being filled with air in an underwater environment, provided with an aperture (21) for lower access and made of a material that is impermeable to water and permeable to light, such dome comprising means for restraining to the sea floor, and means for adjusting the level of water/air in the dome itself which must ensure that plant species cultivated in the greenhouse always reside above such level. Inside such dome a system for the automatic irrigation of the cultivated plants is present comprising a tubular structure (3) on which a plurality of mutually spaced holes (31) is provided, inside which supports are placed for housing and cultivating plant species, irrigation water flowing inside such tubular structure and irrigating such supports in order to achieve a hydroponic culture.

Abstract: This disclosure describes a full-face type mask for underwater use. The mask is provided with a mouthpiece to enable the wearer to breathe with his/her head under the surface of the water. The mask is also provided with a communication device.

Abstract: Mask of the so-called full face type comprising a transparent visor (2), a frame or strapping (3), a sealing skirt (4) preferably made of rubber designed to ensure the water-tight seal and suitable straps (5) for fitting the mask on the face. The face part of the mask is associated with breathing tube (6) which engages on the upper part of the mask and which allows the flow of air to enter into the compartment made between the frame and the visor. The path of the air being inhaled and exhaled both in the mask and in the breathing tube are different from each other, the tube is made with separate ducts for the air inhaled and exhaled and the inside of the mask is made with two compartments, an upper front compartment (6) and a lower oronasal compartment (7) separated by a separating wall.

Abstract: The invention concerns a diving mask (10) comprising a faceplate (18) secured to a frame (12), a flexible skirt having a partition delimiting an upper viewing chamber from a lower breathing chamber, a snorkel (20) having an inlet channel for inhaled air and at least one escape channel for exhaled air, the said snorkel being a continuation of the upper part of the frame, the inlet channel for inhaled air leading into the upper chamber, whilst the first escape channel for exhaled air communicates with the lower chamber. According to the invention, the frame is rigid and inside the frame (12) there is arranged at least one first inner duct for exhaled air, the said first inner duct having an upper end leading into the escape channel for exhaled air, and a lower end in fluid communication with the lower chamber.