A back pack cinch for a strap securing a breathing tank, and an associated buoyancy compensation device worn by a driver are provided. The back pack cinch includes a cinch body. A cover is rotatably mounted to the cinch body. The cover has an open position and a closed position. The cover in the closed position is configured to tension a strap. A tab is rotatably mounted to the cinch body. The tab has an open position and a closed position. In the closed position, a portion of the strap is pressed against the serrated bearing surface by the tab to hold the portion of the strap in a fixed position.

A diving system can include a smart buoyancy assistant to automatically adjusts the amount of air in the buoyancy control device (BCD) to maintain buoyancy control during the descent, level hold, or ascent of a dive. In some instances, the smart buoyancy assistant is automatically activated when the system is submerged to a predetermined activation depth. Additionally, the smart buoyancy assistant can add air to the BCD if the system drops below a predetermined maximum depth. The system can capture data representing dive metrics and sensor data and can report such data to a computing device to further aggregate the data and generate dive models to improve the performance of the system. The computing device can use the aggregated data to perform dive analysis and determine if the system is over or under adjusting the amount of air to improve the dive models.

A buoyancy control device having a back panel and including at least one flotation bladder, which at least one flotation bladder is configured with the device for controllable inflation and deflation, and connected thereto a harness arrangement for securing the device to a body of a user, the device having a cylinder-mounting mechanism arranged to enable front or side mounting of at least one breathable gas cylinder is useful for snorkeling and diving or repeated diving from snorkeling. A particularly preferred configuration provides a lightweight device of less than 5 kg and an apparatus of no more than 10 kg whereby carriage to and from snorkeling and/or diving location is simplified.

A diving apparatus (10) supplies breathing air (L) and includes a basic body (12), a tank interface (20), a pressure reducer (22), a mouthpiece interface (24), and a display device (30). The tank interface connects to a breathing air tank (90) for the inlet of breathing air into the diving apparatus. The mouthpiece interface is configured for connection of a mouthpiece (92) for the supply of breathing air from the diving apparatus. The pressure reducer is arranged in a gas path of the diving apparatus between the tank interface and the mouthpiece interface for reducing gas pressure. The display device includes a display instrument (32) and a display line (34). A holding element (40) is configured to detachable fasten the display line at the basic body. A diving system (100) is provided including the diving apparatus (10), a breathing air tank (90) and/or with a mouthpiece (92).

In one aspect, an embodiment of the invention provides a back pack cinch for a strap securing a breathing tank to a buoyancy compensation device worn by a diver. The back pack cinch includes a cinch body. A cover is rotatably mounted to the cinch body. The cover has an open position and a closed position. The cover in the closed position is configured to tension a strap. A tab is rotatably mounted to the cinch body. The tab has an open position and a closed position. In the closed position, a portion of the strap is pressed against the serrated bearing surface by the tab to hold the portion of the strap in a fixed position.

A buoyancy compensating device is disclosed. The buoyancy compensating device includes an air chamber for containing gas for controlling buoyancy, a vent valve for releasing the gas from the air chamber, a tube secured to a shoulder strap of the buoyancy compensating device, and a pull knob for operating the vent valve. The pull knob includes a head piece and an elongated tail piece extending from the head piece. The tail piece is extended into the tube and connected to the vent valve. The tail piece is configured to reside in the tube while the pull knob is pulled by the diver for opening the vent valve. The tail piece may be connected to a pull cord which is then connected to the vent valve. Alternatively, the tail piece may be directly connected to the vent valve.

The present invention relates to a water floatation garment, and in particular, to such a swimming garment incorporating a fillable bladder and electronics provided to identify emergency situation such as drowning based on sensed data that causing the garment to trigger the fillable bladder to inflate allowing a user to float to surface therein preventing a drowning.

A buoyancy compensator jacket for scuba diving includes an inflatable and deflatable bladder; a backplate part, to which the bladder and elements fastening at least one breathing gas cylinder are attached; and at least one pair of shoulder straps for securing it to the torso of a user and at least one ventral securing strap or ventral closure of the jacket. The jacket further includes a sternal securing element composed of at least one sternal or chest strap, which has at least one costal connection element distinct from the pair of shoulder straps and connecting the sternal strap to the backplate part.

An overpressure or relief valve (30) for a buoyancy compensator device (10) for underwater use of the type comprising an expandable bag (12) internally provided with at least one air chamber is disclosed. The valve (30) comprising at least one mobile shutter element (32) configured to occlude at least one corresponding hole (62) formed on an abutment plate (46) that is configured to be applied on a wall of the air chamber. The mobile shutter element (32) being operatively connected to a first end of an elastic element (34), whereas a second end of said elastic element (34) is in turn operatively connected to an electric actuator element (36), actuated by an electrical current and configured to counteract, in certain operating conditions of the valve (30), the elastic force of the elastic element (34), so as to perform the selective opening and closing of the mobile shutter element (32) and, consequently, respectively allowing or preventing air from the hole (62), and then from the inside of the air chamber, from passing towards one or more through holes (58) formed on the outer body (60) of the valve (30) and vice versa.

An inflator includes a cover hingedly formed on an inflatable clothing, an air-port seat formed under the cover having an air port formed through the air-port seat, and a self-restoring check valve hingedly formed under the air-port seat for normally elastically closing the air port as subjected to air pressure in the inflatable clothing, whereby upon opening of the cover, air can be blown into the inflatable clothing through the air port and to open the check valve to inflate the clothing for keeping warm or buoyant for the clothing wearer.