Patent ID: 9592359
Date: 2017-03-14
CPC Classifications: A61M,Y10T

Claim:
1. A respiratory mask assembly comprising: a respiratory mask including a mask shell and a mask cushion; a forehead support adjustably coupled to the mask, the forehead support including a joining member provided to the mask shell and a cushion frame pivotally mounted to the joining member so that the cushion frame can change an angular position with respect to the mask shell, wherein the cushion frame is adapted to be selectively locked against pivotal movement relative to the joining member in at least three predetermined angular positions by a tongue and slot arrangement including a tongue adapted to be received in one of at least three slots so as to lock the cushion frame and joining member at one of the at least three predetermined angular positions; and an angular adjustment member to allow selection between the at least three predetermined angular positions, the angular adjustment member including a pair of flexible arms spaced from one another a predetermined distance, the flexible arms are adapted to be flexed in a flexed configuration such that they flex toward one another to disengage the tongue from a respective one of the at least three slots, and the flexible arms are adapted to be released from the flexed configuration to allow the flexible arms to resiliently flex away from one another to engage the tongue in the respective one of the least three slots.