A breathing valve with a valve disk lying on a valve crater and with a valve spring, which is in contact with the valve disk. A first spring end is provided in contact with a support surface and a second spring end is provided. The valve disk is accommodated in a guide displaceable along an axial valve axis, and the valve spring is fastened such that the line of action of the spring is directed at an angle in relation to the valve axis. The valve is extensively prevented from vibrating.

A breathing mask with a mask body designed as a full mask with a field of vision and with a filter with a filter connection 13, wherein the filter can be arranged in the middle 3 of the mask body or to the side of it in the cheek area, is to be improved such that the use properties with the filter attached are improved in terms of the position of the center of gravity, a larger field of vision is present, and there is good adaptability to optical devices. To accomplish this task, the filter is d...

Breathing apparatus which incorporates a sensing device operable to adjust the amount of breather's exhaled gas captured in a gas collector section as a direct function of the carbon dioxide content of the exhalation. The amount of exhaled gas captured is sufficiently low in carbon dioxide (CO.sub.2) content to permit rebreathing on the next inhalation, at which time the sensor again adjusts the volume of exhaled gas to be captured. In the one embodiment, a fire fighter's breathing system is des...

A breathing device that includes a mouth piece that is insertable into the mouth to improve breathing. The mouth piece has an opening defined therethrough to permit exhaling and inhaling of air. A filter holder is attached at a substantially right angle to the mouth piece and has a channel defined therethrough. A removable filter is disposed inside the channel and comprises a corrugated sheet metal that permits condensation of air on the sheet metal when air is exhaled through the mouth piece an...

A breathing circuit includes a double-wall coaxial main tube comprising a flexible inner tube forming an inhalation path and a corrugated outer tube disposed outside said inner tube and defining an exhalation path in conjunction with said inner tube; and a manifold including two sets of coaxially disposed inner and outer manifold tubes positioned along the length of the coaxial main tube and connected to corresponding tubes of the main tube. The manifold being provided with (a) a nebulizer which...

A demand regulator for use in underwater breathing employs a longitudinally movable tubular valve member having a transversely opening outlet orifice which is moved relative to the breathing port of the regulator as the valve member is moved axially between the fully opened and fully closed positions.

A breathing circuit which comprises a coaxial tube type main tube comprising an inner flexible tube constituting an inhalant circuit and a corrugated outer tube having a larger average wall thickness than said inner tube, encircling the periphery of said inner tube, and defining an exhalant circuit in conjunction with said inner tube; and an inner tube retaining member disposed at least at one end of said coaxial tube type main tube and serving to keep said inner tube and said outer tube at a pr...

A device for use by runners, joggers and the like for preheating and/or limiting the volume of air entering the user's lungs through the mouth. The device is constructed such that it is retained at least partially in the user's oral cavity and preferably may be substantially completely held therein. The device includes a body of elongated construction formed of suitable materials such as plastic and the like and having a hollow interior open at both ends thereof. The hollow interior houses an op...

An effluent receiver 32 associated with a mask 12 of the type provided with a face portion 22 adapted to be spaced away from the face of the wearer to provide a breathing cavity 26 between the wearer's face and mask. Sealing means 24 associated with the face portion 22 provides a seal to prevent the ingress or egress of gases into or out of the breathing cavity 26. The effluent receiver 32 can be readily assembled to the face protion and is normally associated with a one way valve 42 which preve...

A breathing exerciser, comprising: first and second tubes; a lower cap member having bores for receiving one end of each of the tubes, the lower cap member having a passageway communicating between the first tube and a lower inlet/outlet opening; an upper cap member having bores for receiving the other ends of the tubes, and having a passageway communicating between both the tubes and an upper inlet/outlet opening; a floor member closing the lower end of the second tube; a floatable indicating m...