A gas mask, for use with a gas filter or with a demand oxygen system, includes an elastic mask body, a connector and a counter-support. The elastic mask body is configured to be placed over the mouth and the nose of a user of the gas mask. The connector is attached to the elastic mask body and is configured to fix a gas filter or an end piece of a tube in a mount of the connector. The counter-support is attached to the elastic mask body and has a contact area for a support projection of the connector. The connector and the counter-support are arranged such that a force exerted on the connector in a direction of the user acts on the contact area of the counter-support at least partially via the support projection. The support projection is integrated at the connector by manufacturing in one piece.

A breathing air supply system (200) is configured to be carried by a person (300) and includes a breathing air supply device (130), a fastening device (1) for the breathing air supply device (130) and a vital parameter sensor (30.1). The vital parameter sensor (30.1) is mounted in or at a back section (22) belonging to a fastening section (20) of the fastening device (1). The vital parameter sensor (30.1) is configured to contactlessly measure a vital parameter of a user (300) of the breathing air supply system (200).

A reducer for a self-contained breathing apparatus (SCBA), comprising a primary air pathway with a primary metering valve and a secondary air pathway with a secondary metering valve. The reducer has an Emergency Breathing Support System (EBSS) outlet that is fluidly connected to a branch line of the secondary air pathway.

A reducer for a self-contained breathing apparatus (SCBA), comprising a primary air pathway with a primary metering valve and a secondary air pathway with a secondary metering valve. The reducer has an Emergency Breathing Support System (EBSS) outlet that is fluidly connected to a branch line of the secondary air pathway.

A back carrier of an air respirator includes a cooling conduit section having a meandering metal conduit. The cooling conduit section is interposed between a branching port having a pressure reducing valve built in and a medium-pressure hose. Breathable gas that is filled in a cylinder at high pressure, and adiabatically expanded via the pressure reducing valve flows into the cooling conduit section so as to exert a cooling effect around the cooling conduit section. Such an air respirator can be used for protective clothing and also for fireproof clothing.

A gasket apparatus for use with a self-contained breathing apparatus, comprising an inner gasket portion adapted to form an airtight seal with a substrate such as a human head or face, wherein the inner gasket portion includes at least one type of connector device formed thereon or attached thereto; an outer gasket portion formed partially or completely around the inner gasket portion, wherein the outer gasket portion is adapted to receive at least one type of connecting device thereon for connecting one or more items to the outer gasket portion without disrupting the airtight seal formed by the inner gasket portion; and an interstitial space formed between the inner gasket portion and the outer gasket portion.

A gasket apparatus for use with a self-contained breathing apparatus, comprising an inner gasket portion adapted to form an airtight seal with a substrate such as a human head or face, wherein the inner gasket portion includes at least one type of connector device formed thereon or attached thereto; an outer gasket portion formed partially or completely around the inner gasket portion, wherein the outer gasket portion is adapted to receive at least one type of connecting device thereon for connecting one or more items to the outer gasket portion without disrupting the airtight seal formed by the inner gasket portion; and an interstitial space formed between the inner gasket portion and the outer gasket portion.

According to one embodiment of the present disclosure, the head cradle including 5 two head band members fastened to each other is provided, where the head band member includes: a support member extending in one direction; a first fastening part formed at one end portion of the support member and having an insertion hole formed to pass therethrough; a second fastening part formed at the other end portion of the support member; and a strap connection part which is formed at an end portion of the first 0 fastening part or the second fastening part and to which a strap connected to a mask main body is connected, where the support member includes a hole-section on which at least one slit hole having a shape extending at a predetermined angle with respect to the one direction is formed.

According to one embodiment of the present disclosure, the head cradle including 5 two head band members fastened to each other is provided, where the head band member includes: a support member extending in one direction; a first fastening part formed at one end portion of the support member and having an insertion hole formed to pass therethrough; a second fastening part formed at the other end portion of the support member; and a strap connection part which is formed at an end portion of the first 0 fastening part or the second fastening part and to which a strap connected to a mask main body is connected, where the support member includes a hole-section on which at least one slit hole having a shape extending at a predetermined angle with respect to the one direction is formed.

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.