A water survival mask that seals to the user's face covering the nose and mouth and preventing the unwanted inhalation of water. The mask lets air in through slots located at the bottom of the mask that also allow water to drain out. Once through the slots, water is prevented from entering the mask by a water impermeable barrier that selectively allows for air and not water to be inhaled, which may be a float valve. If water penetrates through the water impermeable barrier it is caught by splash guards and funneled back out of the mask before it can enter the primary airway of the user. The water survival mask works exceptionally well at preventing inhalation of windblown water droplets or wave water when floating in rough waters, thereby preventing pulmonary aspiration and pulmonary edema. It also prevents immediate inhalation of water do to submersion in cold water.

A water survival mask that seals to the user's face covering the nose and mouth and preventing the unwanted inhalation of water. The mask lets air in through slots located at the bottom of the mask that also allow water to drain out. Once through the slots, water is prevented from entering the mask by a water impermeable barrier that selectively allows for air and not water to be inhaled, which may be a float valve. If water penetrates through the water impermeable barrier it is caught by splash guards and funneled back out of the mask before it can enter the primary airway of the user. The water survival mask works exceptionally well at preventing inhalation of windblown water droplets or wave water when floating in rough waters, thereby preventing pulmonary aspiration and pulmonary edema. It also prevents immediate inhalation of water do to submersion in cold water.

An electronic directional indicator includes a microcontroller in electronic communication with an electronic compass, an electronic motion-detecting module and at least one light source that is controllably illuminable. A battery life of the electronic directional indicator is managed by monitoring the electronic motion-detecting module for motion within pre-defined time periods and reducing power to electronic components accordingly. The electronic directional indicator can be placed on the face shield portion of a self-contained breathing apparatus face mask to provide a constant source of orientation for firefighters in reduced- or zero-visibility environments.

Provided are underwater spectacles, including a spectacle holder, spectacle belts and an intelligent control system. The intelligent control system includes a warning device, a microprocessor and a plurality of radars. The plurality of radars are respectively disposed on the spectacle holder and the spectacle belts. Input ends of the microprocessor are respectively connected with the plurality of radars, and an output end of the microprocessor is connected with the warning device. The microprocessor acquires signals of the radars, determine obstacle information and/or danger avoiding information around the head of a user, and send the information to the warning device. The warning device receives and provides the user with the obstacle information and/or the danger avoiding information. A control method of the underwater spectacles is also provided.

Provided are underwater spectacles, including a spectacle holder, spectacle belts and an intelligent control system. The intelligent control system includes a warning device, a microprocessor and a plurality of radars. The plurality of radars are respectively disposed on the spectacle holder and the spectacle belts. Input ends of the microprocessor are respectively connected with the plurality of radars, and an output end of the microprocessor is connected with the warning device. The microprocessor acquires signals of the radars, determine obstacle information and/or danger avoiding information around the head of a user, and send the information to the warning device. The warning device receives and provides the user with the obstacle information and/or the danger avoiding information. A control method of the underwater spectacles is also provided.

A semi-closed circuit gas recycling scuba diving breathing apparatus having a breathing loop. The breathing loop has a breathing bag to be supplied by at least one gas tank and a recycling chamber. The gas tank is connected to an inlet of the breathing bag by a first duct and a second duct having respectively a demand regulator and a fixed nozzle configured to deliver respectively a first gas input and a second gas input to the breathing bag. Advantageously, the apparatus has a third duct having a gas flow regulator configured to deliver at a variable mass flow, a third gas input to the breathing bag, and a diving condition sensor, configured to measure a physiological parameter of the diver or the depth. The apparatus is advantageously configured to make the variable mass flow vary according to data of the sensor to optimise the consumption of gas.

The present invention relates to an underwater VR headset (1) comprising a diving mask (10), which can be placed on a diver's head on the diver's face in a viewing direction (5), and an underwater display unit (20), wherein the underwater display unit (20) is arranged behind the diving mask (10) in the viewing direction (5) of the diver, wherein the underwater display unit (20) comprises a housing (22) and at least one VR display unit (25) arranged in the housing (22), wherein a virtual reality displayed by the VR display unit (25) can be perceived by the diver through the diving mask (10) and the housing (22), and wherein the housing (22) is gas-tight and liquid-tight. Moreover, the present invention relates to a diving mask (10) and an underwater display unit (20).

The present invention relates to an underwater VR headset (1) comprising a diving mask (10), which can be placed on a diver's head on the diver's face in a viewing direction (5), and an underwater display unit (20), wherein the underwater display unit (20) is arranged behind the diving mask (10) in the viewing direction (5) of the diver, wherein the underwater display unit (20) comprises a housing (22) and at least one VR display unit (25) arranged in the housing (22), wherein a virtual reality displayed by the VR display unit (25) can be perceived by the diver through the diving mask (10) and the housing (22), and wherein the housing (22) is gas-tight and liquid-tight. Moreover, the present invention relates to a diving mask (10) and an underwater display unit (20).

An underwater exercise equipment with a buckle apparatus is provided. The buckle apparatus has a base, a buckle and at least one pressing portion. The base extends from a first end of the lens and is formed with the lens. The base has a rotation axis where a belt can bypass. The buckle is pivotably disposed on the base. The at least one pressing portion extends from a second end of the lens and is formed with the lens, and the at least one pressing portion is disposed adjacent the buckle. When the belt bypasses the rotation axis, the buckle is adapted to clasp and fasten the belt, and the belt can be released by pushing the at least one pressing portion.

The present invention provides materials and methods for forming an interface between an appliance and living tissue using a foamed elastomeric material which contacts the tissue or similar surfaces. The elastomeric material is in the form of a durable and washable material that when applied to living tissue or similar surfaces displaces and flows in to non-conforming areas creating an air and/or water tight seal that substantially returns to an original shape when removed from the contact surface. The appliance may also include structural elements designed to optimize comfort, compliance and seal achieved through minimizing the pressure variation along the contact surface of the therapy device.