Forehead supports for facial masks with knob turned to move forehead cushion linearly between retracted and extended positions

摘要

A face mask assembly (FMA) for supplying breathable gas to a wearer. The face mask assembly (FMA) includes a mask frame (112) including a support (120), a facial cushion (16) attached to the mask frame (112), and a forehead support (10A). The forehead support (10A) includes a forehead cushion assembly (50, 52) and an adjustment knob (upper head portion thereof as152) operatively coupled to the forehead cushion assembly (50, 52). The adjustment knob (152) is threadably engaged with the forehead cushion assembly (50, 52) such that turning movement of the adjustment knob (150) causes the mask frame (112) to be moved between retracted and extended positions with respect to the forehead cushion assembly (50, 52).