Patent ID: 8276586

Claim:
Respiratory valve, comprising a valve housing with a chamber, the chamber having an inlet opening and a respiration opening arranged on respective inlet and respiration sides of said chamber, wherein the chamber is limited by an arcuated or aslant interior wall section extending from a lower part of said chamber and into an upper part of said chamber, which interior wall section is terminated in said upper part of said chamber and under the respiration opening, and that the respiratory valve further comprises an outlet opening, said outlet opening having an outlet opening width, said outlet opening being arranged in said interior wall section, and an elongated pliable or movable flap element in the form of a plate element in the form of a plate that extends in a direction of depth of said housing having a lower part connected to said lower part of said chamber, under the outlet opening, which plate element at the outlet opening is sufficiently wide to cover the outlet opening, and being terminated in an upper part of said interior chamber, which plate element is adapted to be positioned, in a rest position, in a distance from said interior wall section, and, in a work position, proximal to a part of said interior wall section, for in the work position substantially to cover and close the outlet opening and to establish a passageway between the respiration opening and inlet opening.