Installing in the head of the oxygen mask null user for the flight crew, who possesses

摘要

(57) Abstract To decrease the pressure power which it occurs the installation aspect (20) of the mask (12) vis-a-vis the face of the user the expansion type harness respirator (10) which possesses the installation impression adjustment (16) which it is possible and is improved is offered. As for the mask (12), through the housing lamp foot (36), the harness strap element (26) of the expansion type which possesses the end mount (28 and 30) in the tubed mask lamp foot (36) containment in putting is installed. In one feature, the end mount (28 and 30) is locked to the lamp foot (36) by the installation and removal possible fixed installation, but in order the installation aspect (20) and to adjust the operating distance with the end mounts (28 and 30), the end mount equal to length amount of the lamp foot paralleling to the longitudinal direction, is movement possible. The adjustment button (78) releases the fixed installation (52), in order to try to be able to move the end mount (28 and 30) which, it is related is possible to be pushed down. Regarding another feature, position of the installation impression in is achieved in the air operation by the adjustment of pressure of the internal cavity section (128) inside the housing assembly (88).