Abstract: Walkers capable of adapting to surrounding environments, including stairs, curbs, sidewalks, and other surface or ground obstacles that have adjacent uneven surfaces. The walkers include a frame assembly having back legs, front legs, and a handlebar fixedly coupled to the back legs. Intermediate members respectively couple the front legs to the back legs and are configured for selective vertical adjustment of vertical positions of the front legs relative to the back legs and relative to at least a first surface engaged by lower ends of the back legs. After selective vertical adjustment of the vertical positions of the front legs, the front and back legs of the walker are capable of engaging and supporting the walker on the first surface engaged by the lower ends of the back legs and engaging and supporting the walker on at least a second surface engaged by lower ends of the front legs.

Abstract: Walkers capable of adapting to surrounding environments, including stairs, curbs, sidewalks, and other surface or ground obstacles that have adjacent uneven surfaces. The walkers include a frame assembly having back legs, front legs, and a handlebar fixedly coupled to the back legs. Intermediate members respectively couple the front legs to the back legs and are configured for selective vertical adjustment of vertical positions of the front legs relative to the back legs and relative to at least a first surface engaged by lower ends of the back legs. After selective vertical adjustment of the vertical positions of the front legs, the front and back legs of the walker are capable of engaging and supporting the walker on the first surface engaged by the lower ends of the back legs and engaging and supporting the walker on at least a second surface engaged by lower ends of the front legs.