Abstract: Hydrostatic balancing jacket for underwater diving, including a dorsal element from which there proceed two shoulder flaps and two abdominal/pectoral flaps, each shoulder flap being connectable to the corresponding abdominal/pectoral flap by straps provided with buckles which can be adjusted on the straps, just as the abdominal/pectoral flaps are connectable together by straps provided with buckles; the free ends of the straps may be inserted in a number of housings made in the flaps.

Abstract: Method for manufacturing regulating membranes for breathing apparatus characterized in that it comprises a phase of molding of the aforesaid membrane during which a disk, made of rigid or semi-rigid material, is embedded and anchored inside the membrane itself, which presents continuity of material on the upper part.

Abstract: A regulator (2) for underwater breathing apparatus (1) which guarantees a high degree of hygiene comprises a body (7), a delivery outlet (8) formed in the said body (7) to deliver a breathable mixture to a user, a mouthpiece (9) for the said delivery outlet (8) and quick-release fixing means (12) for the said mouthpiece (9) on the said delivery outlet (8).

Abstract: Underwater breathing apparatus with improved ease of handling comprises a cylinder, a meter and a quick coupling on the cylinder and on the meter, together with a flexible hose having quick couplings at its ends.

Abstract: A support device, in particular for diving equipment parts, and of the type intended to be carried by the diver, comprises a clamping clip (1) which can be elastically opened and which grips the equipment part (2), and means (3, 4) for securing the clip (1) to a part of the equipment which is worn (5), such as a garment, a jacket, or a part of the harness. The device is particularly useful, especially for supporting an emergency regulator (2), known as an octopus rig. For this purpose in particular, a cap (8) for closing off the air outlet hole in the mouthpiece of the emergency regulator (2), is attached to the device.

Abstract: A poppet seat for air regulating devices, such as underwater diving equipment, includes a metal or plastic substrate around and through which synthetic or rubber seat material is molded. In its preferred form, this seat material surrounds the sides of the substrate and fills holes therein as well as an annular v-groove formed in the periphery of the substrate to further enhance the mechanical bond between the substrate and seat material.

Abstract: A regulator (2) for an under water breathing apparatus (1) comprises a body (7), a duct (5) for delivery of breathable mixture, a shutter (20) of soft material stressed towards a shutter seat (5a), a push button (11) acting via a lever (21) on the shutter (20) to control it to move away from the shutter seat (5a) upon manual delivery of the breathable mixture, removable locking means (24)in the said push button (11) for locking the lever (21) in a position in which the said lever (21) retains the shutter (20) in a position just touching the shutter seat (5a) to prevent damage to the shutter (20) in inactive periods of the regulator (2).

Abstract: A valve for regulators in self-contained underwater breathing apparatus includes a tubular plug (9) axially slidably accommodated in two sealingly separated adjacent chambers (6,7). Of these two chambers, the so-called pressure chamber (6) is connected with a pressurized gas source, and is provided with a seat (11) for cooperating with the matching edge (109) of the tubular plug (9), and the so-called compensation chamber (7) is formed with a hole or holes (107) connected with the ambient medium, and has the relative end portion of the tubular plug (9), which is in form of a flaring-out expansion head (209) connected with the valve outlet (12), sealingly guided therein. A helical spring (10) is arranged between the expansion head (209) and the opposite partition (8), dividing the two chambers from each other.