A system may include a manifold. The manifold may include a body and a rupture disc. The body may include first connector connected to a pressurized source, a second connector, and a third connector. The body may include hollow pathway network including a first path portion extending from the pressurized source to a pathway junction, a second path portion extending from the pathway junction to the second connector, and a third path portion extending from the pathway junction to the third connector. The first path portion may include a bend. The rupture disc may be positioned between the bend and the pathway junction. When the rupture disc is in an unruptured state, the rupture disc may seal the first path portion from the other path portions. When the rupture disc is in a ruptured state, the rupture disc may allow a flow from the pressurized source to the third connector.

A carrier for carrying at least one compressed gas bottle of a breathing apparatus includes a carrier plate configured for removably receiving the at least one compressed gas bottle, and at least one filling element positioned in a space between the carrier plate and the at least one compressed air bottle. The at least one filling element includes a first positive connection element having a surface for engaging the at least one compressed gas bottle, and a second positive connection element connected to the first positive connection element and the carrier plate.

A carrier for carrying at least one compressed gas bottle of a breathing apparatus includes a carrier plate configured for removably receiving the at least one compressed gas bottle, and at least one filling element positioned in a space between the carrier plate and the at least one compressed air bottle. The at least one filling element includes a first positive connection element having a surface for engaging the at least one compressed gas bottle, and a second positive connection element connected to the first positive connection element and the carrier plate.

A tool, such as a respirator, including a body, an opening defined by the body, a door coupled to the body, and a filter positioned between the body and the filter. The door actuates between open and closed positions. The filter can be removed and replaced when the door is in the open position.

A tool, such as a respirator, including a body, an opening defined by the body, a door coupled to the body, and a filter positioned between the body and the filter. The door actuates between open and closed positions. The filter can be removed and replaced when the door is in the open position.

A respiratory protection mask includes detachably connected main body and front cover. The main body includes a shielding member for shielding a wearer's mouth and nose, and has air outlet with air-outlet valve and air inlets with air-inlet valves. The mask is characterized in a guide structure and a limiting structure provided between the main body and the front cover. The guide structure includes corresponding slide rail and slide channel capable of guiding the front cover to move along a linear path parallel to a longitudinal section of the air outlet to assemble to the main body and cover the air-outlet valve. The limiting structure includes corresponding male and female fasteners that are detachably engaged with each other when the front cover is assembled to the main body, preventing the front cover from moving in an opposite direction on the linear path to separate from the main body.

A respiratory protection mask includes detachably connected main body and front cover. The main body includes a shielding member for shielding a wearer's mouth and nose, and has air outlet with air-outlet valve and air inlets with air-inlet valves. The mask is characterized in a guide structure and a limiting structure provided between the main body and the front cover. The guide structure includes corresponding slide rail and slide channel capable of guiding the front cover to move along a linear path parallel to a longitudinal section of the air outlet to assemble to the main body and cover the air-outlet valve. The limiting structure includes corresponding male and female fasteners that are detachably engaged with each other when the front cover is assembled to the main body, preventing the front cover from moving in an opposite direction on the linear path to separate from the main body.

A bayonet connector (112, 128) suitable for connecting a filter cartridge (72) or an air supply tube to a respirator (10, 14). The bayonet connector (112) has a tubular male part (112) and a female part. The male part has a tube (114) with two or more lugs (130, 132) formed on it, which engage with engaging ribs (136, 138) located on an interior sidewall of the female part (128), or vice versa. The lugs (130, 132) and their corresponding engaging ribs (136, 138) are located at different axial positions.

A bayonet connector (112, 128) suitable for connecting a filter cartridge (72) or an air supply tube to a respirator (10, 14). The bayonet connector (112) has a tubular male part (112) and a female part. The male part has a tube (114) with two or more lugs (130, 132) formed on it, which engage with engaging ribs (136, 138) located on an interior sidewall of the female part (128), or vice versa. The lugs (130, 132) and their corresponding engaging ribs (136, 138) are located at different axial positions.

A blower device for a respiratory protection system comprises a fan for generating an airflow, further comprises at least one filter element which is configured to be flown through by the airflow, comprises a housing unit accommodating the fan and the at least one filter element and comprises an air conveying channel, which accommodates the filter element and is configured for guiding an airflow between the filter element and the fan, wherein the air conveying channel is configured for a deflection of an airflow between the fan and the filter element,

wherein the air conveying channel is embodied separately from the housing unit and the at least one filter element is fixedly integrated in the air conveying channel.