Respirator Mask for a Compressed Air Breathing Apparatus
AssigneeMine Safety Appliances Company
InventorPeter Kling
Life of this patent
Estimating the term…
Abstract
The invention relates to a respiratory protection mask for a compressed air breathing apparatus comprising a pulmonary machine which is controlled by a control membrane when the wearer of the mask breathes in. According to the invention, the air outlet of the expiratory valve and the control membrane are covered by a common cover, forming a rinsing area on the outside of the control membrane through which homogeneously temperate, clean rinsing air flows from the air outlet to the air discharge openings in the cover, thereby ensuring high functionality and high service life of the membrane-controlled pulmonary machine despite extreme environmental conditions.
Claims4
A respirator mask for compressed air breathing apparatuses with a lung machine controlled by a control membrane and an expiratory valve with an air outlet, characterized in that the air outlet of the expiratory valve and the control membrane of the lung machine are covered at a spacing by a common lid comprising air discharge openings on the side of the lid that faces away from the air outlet and forming a purging space above the control membrane.
Dependencies are inferred from the claim text.