Mestel Safety S.r.l.

Mestel S.r.l.

Sergio Gamberini

Gabriele Cucchia

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.

Mask for underwater use, in particular of granfacial type with assisted breathing

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.

Mask for underwater use, in particular of the full face type, provided with a communication device

A greenhouse for underwater cultivation of terrestrial plant species comprising a dome () suitable for being filled with air in an underwater environment, provided with an aperture () 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 () on which a plurality of mutually spaced holes () 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.

Greenhouse for underwater cultivation of terrestrial plant species

The present invention refers to a greenhouse () for underwater cultivation of terrestrial plant species as well as to an underwater cultivation assembly using it, in which the greenhouse () for underwater cultivation of terrestrial plant species is characterised in that it comprises a balloon () adapted to being filled with air in an underwater environment (), the balloon () comprising an aperture () for lower access, the balloon () being made from material that is impermeable to water and permeable to light, the balloon () comprising at least one inner support shelf () for housing at least one seedbed () and means for restraining () to the floor () of the aquatic basin.

Greenhouse for the underwater cultivation of terrestrial plant species as well as an underwater cultivation assembly using it

A support for earphone unit for a scuba diver mask ( ) comprises a U-shaped base ( ) with a rod ( ) extending from it, associable to an earphone unit ( ), to be arranged close to the scuba diver's ear, wherein the U-shaped base ( ) in each of its two legs ( ) can be attached to a carrying band ( ) of the mask ( ) by freely removable coupling means ( ) and a free end of the rod ( ) is arranged into a seat ( ) of the earphone unit ( ).

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Genoa, Italy

Sergio Gamberini