US 11,986,428 B2
Wheelchair
Roydon Mark Scarlett, Manukau (NZ)
Assigned to ROLAPAL LIMITED, Takanini (NZ)
Filed by ROLAPAL LIMITED, Auckland (NZ)
Filed on Oct. 1, 2021, as Appl. No. 17/491,611.
Prior Publication US 2023/0105633 A1, Apr. 6, 2023
Int. Cl. A61G 5/12 (2006.01); A61G 5/10 (2006.01)
CPC A61G 5/1081 (2016.11) [A61G 5/1059 (2013.01); A61G 5/1067 (2013.01); A61G 5/122 (2016.11)] 11 Claims
OG exemplary drawing
 
1. A wheelchair comprising:
wheels;
a support frame that engages with the wheels;
a seat base fitted to the support frame, wherein the seat base includes at least one rear saddle, at least two connector tabs and at least one front saddle, all engaged with the support frame, wherein each connector tab has a pin that engages a slot of corresponding clamp that is in turn secured to the support frame; and
a backrest, wherein the backrest is secured to the frame by way of a set of lever arms at each side, each set comprising one lever arm secured to the back rest (directly or indirectly) and another lever arm secured to the frame (directly or indirectly), for each set at least one of the lever arms is adapted to pivot with respect to the other to enable adjustment of incline of the backrest when an occupant of the seat presses their back against the backrest.