US 11,986,685 B2
Adjustable support frame for a breathing apparatus
Jason Edward Allan, North Shields (GB); and Darin Ferguson, Ashington (GB)
Assigned to DRAEGER SAFETY UK LIMITED, Northumberland (GB)
Filed by DRAEGER SAFETY UK LIMITED, Blyth (GB)
Filed on Feb. 19, 2021, as Appl. No. 17/179,685.
Claims priority of application No. 20165380 (EP), filed on Mar. 24, 2020.
Prior Publication US 2021/0299486 A1, Sep. 30, 2021
Int. Cl. A62B 9/04 (2006.01)
CPC A62B 9/04 (2013.01) 18 Claims
OG exemplary drawing
 
1. An adjustable support frame for a breathing apparatus having an adjustable longitudinal dimension, a user-facing side configured to substantially overlay a user's back in use, and outer-facing side opposing the user-facing side, the adjustable support frame comprising:
a first frame portion and a second frame portion, the first and second frame portions being moveable relative to each other so as to adjust the longitudinal dimension;
an adjustment mechanism having a locked configuration which inhibits relative movement of the first and second frame portions and an unlocked configuration which permits relative movement of the first and second frame portions; and,
a relief formed in the user-facing side of the support frame;
wherein the adjustment mechanism comprises one or more actuating elements which are operable to actuate the adjustment mechanism from the locked configuration to the unlocked configuration, the one or more actuating elements being provided on a surface which is substantially perpendicular to the user-facing side of the support frame; and
wherein the one or more actuating elements are arranged on a peripheral wall of the relief.