Apparatuses and methods are disclosed for improving the Weight/Duration ratio of Self Contained Breathing Apparatuses (SCBAs) by decreasing the amount of fresh breathing gas required from the system by saving exhaled air that is low in carbon dioxide in a reservoir and reusing it at the subsequent inhalation. Electronic control units (“ECUs”) including conventional oxygen sensors and special types of carbon dioxide sensors are used to monitor and predictably regulate the consumption of breathing gas, further contributing to a significantly lower overall system weight for any given duration of the SCBA.

Apparatuses and methods are disclosed for improving the Weight/Duration ratio of Self Contained Breathing Apparatuses (SCBAs) by decreasing the amount of fresh breathing gas required from the system by saving exhaled air that is low in carbon dioxide in a reservoir and reusing it at the subsequent inhalation. Electronic control units (“ECUs”) including conventional oxygen sensors and special types of carbon dioxide sensors are used to monitor and predictably regulate the consumption of breathing gas, further contributing to a significantly lower overall system weight for any given duration of the SCBA.

Aspects of the invention relate to personal protection systems against COVID-19 including face masks and methods, systems or devices of managing, regulating and/or filtering airflow during travel on an aircraft, train, or bus.

Aspects of the invention relate to personal protection systems against COVID-19 including face masks and methods, systems or devices of managing, regulating and/or filtering airflow during travel on an aircraft, train, or bus.

Proposed is a mask using an oxygen supply device. The mask includes a purification cartridge which purifies air for breathing, a mask part which introduces and discharges the air purified via the purification cartridge, a connector which fastens together the purification cartridge and the mask part, and an oxygen supply device which supplies oxygen through an oxygen hose connected to the connector.

Proposed is a mask using an oxygen supply device. The mask includes a purification cartridge which purifies air for breathing, a mask part which introduces and discharges the air purified via the purification cartridge, a connector which fastens together the purification cartridge and the mask part, and an oxygen supply device which supplies oxygen through an oxygen hose connected to the connector.

A regulator assembly for an aircrew breathing mask is provided The regulator assembly includes a support, a mode selection knob movable between a first position, a second position and a third position, the mode selection knob comprising a base pivotably mounted on the support with respect to an axis of rotation, and a cover supported by the base. The cover can be movable relative to the base between a locked position of the mode selection knob and an unlocked position of the mode selection knob, the locked position locking the rotation of the mode selection knob from the second position to the third position, the unlocked position permitting rotation of the mode selection knob from the second position to the third position.

A regulator assembly for an aircrew breathing mask is provided The regulator assembly includes a support, a mode selection knob movable between a first position, a second position and a third position, the mode selection knob comprising a base pivotably mounted on the support with respect to an axis of rotation, and a cover supported by the base. The cover can be movable relative to the base between a locked position of the mode selection knob and an unlocked position of the mode selection knob, the locked position locking the rotation of the mode selection knob from the second position to the third position, the unlocked position permitting rotation of the mode selection knob from the second position to the third position.

A monitoring system (100″) is for aeronautical personnel (99), such as aircraft operators, pilots, co-pilots or passengers of airplanes or aircraft, such as aircraft or helicopters of civil or military aviation, passenger aircraft in scheduled or charter traffic, in particular also ultra-fast aircraft. The monitoring system includes a sensor system (60) for a measurement-based monitoring of the gas concentration. The operation of the monitoring system (100″) can be configured by an external input/output unit (450) or an external output unit (460).

A process and apparatus to preclude unfiltered atmospheric gases and the products of human respiration including carbon-dioxide (CO.sub.2) with carbon-14 (.sub.14C) from contaminating greenhouse atmospheric gases which has utility in growing agricultural products with a reduced abundance of .sub.14C are disclosed. Agricultural products with reduced .sub.14C content can be grown in greenhouses with filtered atmospheric gases for the benefit of reducing harmful damage to human DNA. Agricultural production in greenhouses still requires humans to plant, maintain, and harvest crops in many cases. The process and apparatus allow for humans to access, work, and operate in these controlled environments without contaminating the atmospheric gases and agricultural products therein with respiration products and unfiltered atmospheric gases containing radioactive .sub.14C.