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.

A respirator device having an elastomeric sleeve is provided. In an exemplary embodiment, a respirator device as described herein includes a rigid nozzle element and a body including a receiver having an elastomeric sleeve. The elastomeric sleeve defines a channel, and the elastomeric sleeve is configured to deform around the nozzle element when the nozzle element is inserted into the channel.

A respirator device having an elastomeric sleeve is provided. In an exemplary embodiment, a respirator device as described herein includes a rigid nozzle element and a body including a receiver having an elastomeric sleeve. The elastomeric sleeve defines a channel, and the elastomeric sleeve is configured to deform around the nozzle element when the nozzle element is inserted into the channel.

A ducted breathing apparatus and methods for assembling and using such ducted breathing apparatus are provided. The ducted breathing apparatus may include a face cover for sealing at least a portion of a user's face. The ducted breathing apparatus may include a ducted air channel element for providing direct air flow from a user's mouth within the mask to the outside environment. The ducted breathing apparatus may include a coupling element for providing a sealed mating connection between the ducted air channel element and the face cover.

A ducted breathing apparatus and methods for assembling and using such ducted breathing apparatus are provided. The ducted breathing apparatus may include a face cover for sealing at least a portion of a user's face. The ducted breathing apparatus may include a ducted air channel element for providing direct air flow from a user's mouth within the mask to the outside environment. The ducted breathing apparatus may include a coupling element for providing a sealed mating connection between the ducted air channel element and the face cover.

An apparatus having components that are interconnectable without fasteners. A first component includes a male connection portion including a connection wall defining a non-circular, closed-geometric shape, and one or more grooves extending along a least a portion of an outer side of the connection wall. A second component includes a female connection portion including a capture wall defining a shape within which the connection wall fits in a first orientation and a second orientation. The second orientation is a fastened state achieved via a rotational twist action of the first component with respect to the second component. One or more protrusions extend inwardly from the capture wall. The one or more protrusions are sized to engage the one or more grooves of the connection wall of the first component when the connection wall is oriented in the second orientation within the capture wall.

An apparatus having components that are interconnectable without fasteners. A first component includes a male connection portion including a connection wall defining a non-circular, closed-geometric shape, and one or more grooves extending along a least a portion of an outer side of the connection wall. A second component includes a female connection portion including a capture wall defining a shape within which the connection wall fits in a first orientation and a second orientation. The second orientation is a fastened state achieved via a rotational twist action of the first component with respect to the second component. One or more protrusions extend inwardly from the capture wall. The one or more protrusions are sized to engage the one or more grooves of the connection wall of the first component when the connection wall is oriented in the second orientation within the capture wall.

A safety harness configured to secure self contained breathing apparatus to a user wherein the safety harness is constructed so as to inhibit entanglement with elements inside a building. The present invention includes a torso mount having a pair of shoulder straps and a belt member that are operably coupled to a back plate. The back plate is configured to have an air tank secured thereto utilizing at least one strap member. A first mounting ring is present and surroundably mounts the air tank proximate the upper end thereof. A first strap member and a second strap member are secured to the first mounting ring and extend to the shoulder strap so as to block a void present between the air tank and back plate. A second mounting ring is present and adjacent to the first mounting ring. A regulator protection member is present around the tank regulator.

Aspects of various embodiments herein may be implemented as follows. An apparatus has a material shell that conforms to a user's face, and a securing portion connected to the shell that may operate to secure a filter to the user's face with the filter covering the user's nose and mouth. A securing force may be applied to the filter via the first material portion in a direction toward the user's face, thereby sealing the filter around the user's nose and mouth. Various implementations involve elastic and other material that facilitate sealing of the filter around the user's nose and mouth.

A protective cover for an emergency worker oxygen tank has a rigid protective cover member with a knob protection portion and a tank attachment member. The tank attachment member is fixedly attached to the rigid cover member. The tank attachment member is capable of being securely attached to a portion of a standard oxygen tank or a portion of the frame supporting said oxygen tank used by emergency workers. The oxygen tank is commonly strapped onto the emergency worker's back via a standard rigid frame. The rigid protective cover member includes a knob protection portion that is appointed to extend around and over an adjustment knob portion of the oxygen tank to prevent damage and facilitate transport.