A cartridge system comprising a container and at least four cartridges for generating oxygen, a compressor for compressing the generated oxygen, at least one storage tank configured to store the compressed oxygen received from the compressor, an oxygen pressure regulator enabling a uniform flow of oxygen at pre-defined oxygen pressure, an oxygen flow control knob regulating flow ratio of the oxygen being supplied to the patient in an instant, a humidifier means imparting humidity to the oxygen being supplied to a patient, and a display unit displaying a set of information associated with the system and communicatively coupled to the portable oxygen generator system 10 via wireless network. The cartridges may be triggered in a plurality of ways to maintain a continuous outflow of generated oxygen for a longer duration. Further, the operation of the system may be monitored or controlled wirelessly from a distant location.

A cartridge system comprising a container and at least four cartridges for generating oxygen, a compressor for compressing the generated oxygen, at least one storage tank configured to store the compressed oxygen received from the compressor, an oxygen pressure regulator enabling a uniform flow of oxygen at pre-defined oxygen pressure, an oxygen flow control knob regulating flow ratio of the oxygen being supplied to the patient in an instant, a humidifier means imparting humidity to the oxygen being supplied to a patient, and a display unit displaying a set of information associated with the system and communicatively coupled to the portable oxygen generator system 10 via wireless network. The cartridges may be triggered in a plurality of ways to maintain a continuous outflow of generated oxygen for a longer duration. Further, the operation of the system may be monitored or controlled wirelessly from a distant location.

A snorkeling breathing apparatus includes a mask, a first breathing tube assembly and a one-way exhaust valve. The mask includes an outer mask and a breathing mask arranged in the outer mask, the mask is equipped with a breathing chamber. The breathing tube assembly includes a first breathing tube and a one-way inhaling valve. The breathing tube is connected to the breathing mask through the inhaling valve. The exhaust valve is connected and mounted on the outer mask and the breathing mask. While inhaling, the inhaling valve conducts and air enters the chamber through the breathing tube. While exhaling, the exhaust valve conducts and air flows from the chamber to outside.

A snorkeling breathing apparatus includes a mask, a first breathing tube assembly and a one-way exhaust valve. The mask includes an outer mask and a breathing mask arranged in the outer mask, the mask is equipped with a breathing chamber. The breathing tube assembly includes a first breathing tube and a one-way inhaling valve. The breathing tube is connected to the breathing mask through the inhaling valve. The exhaust valve is connected and mounted on the outer mask and the breathing mask. While inhaling, the inhaling valve conducts and air enters the chamber through the breathing tube. While exhaling, the exhaust valve conducts and air flows from the chamber to outside.

An integrated manifold system is disclosed that combines in a single, compact, unitary assembly a one-piece, machined manifold for connecting air supply cylinders with a first stage regulator and recharge port. The manifold body has at least one bottle port configured to removably receive a bottle of pressurized air, a first stage regulator chamber, a quick disconnect fitting port, an air channel in fluid communication with the at least one bottle port and the first stage regulator chamber, and an outlet channel in fluid communication with the first stage regulator chamber.

An integrated manifold system is disclosed that combines in a single, compact, unitary assembly a one-piece, machined manifold for connecting air supply cylinders with a first stage regulator and recharge port. The manifold body has at least one bottle port configured to removably receive a bottle of pressurized air, a first stage regulator chamber, a quick disconnect fitting port, an air channel in fluid communication with the at least one bottle port and the first stage regulator chamber, and an outlet channel in fluid communication with the first stage regulator chamber.

A personal protective positive pressure device includes a mask with an inlet connector and a tube with a first connector and a second connector. The tube is connected through the first connector to the inlet connector of the mask and the tube is connected through the second connector to an air nozzle of a ventilation system onboard a transportation vehicle. The personal protective positive pressure device is configured to limit inhalation of airborne pathogens while traveling on the transportation vehicle and to inspire confidence in the safe use of public transportation.

A personal protective positive pressure device includes a mask with an inlet connector and a tube with a first connector and a second connector. The tube is connected through the first connector to the inlet connector of the mask and the tube is connected through the second connector to an air nozzle of a ventilation system onboard a transportation vehicle. The personal protective positive pressure device is configured to limit inhalation of airborne pathogens while traveling on the transportation vehicle and to inspire confidence in the safe use of public transportation.

A mask apparatus includes a mask body including a body front surface and a body rear surface configured to cover at least a portion of a user's face, a fan module disposed at the body front surface, a mask body cover that is coupled to the mask body and defines an inner space accommodating the fan module, a seal coupled to the body rear surface and configured to define a breathing space between the mask body and the user's face. The mask body defines an opening that passes through the mask body and that connects the inner space of the mask body cover to the breathing space. A pressure sensor is disposed in the opening and configured to sense air pressure in the breathing space.

A breathing apparatus includes a first air pathway for receiving ambient air and channeling the air through a portion of the breathing apparatus, a heating section operatively coupled to the first air pathway and configured to elevate a temperature of the ambient air in the first air pathway to a first prescribed temperature, and a cooling section operatively coupled to the first air pathway and configured to reduce the temperature of the ambient air heated by the heating section to a second prescribed temperature, the second prescribed temperature lower than the first prescribed temperature. A breathing circuit is coupled to the first air pathway and configured to provide the cooled air to a user.