A wheelchair can comprise: a frame comprising an upper portion and a lower portion that is coupled to the upper portion so that the upper portion is vertically adjustable with respect to the lower portion. A pair of drive wheels can be coupled to the frame. A plurality (e.g., a pair) of casters are coupled to the frame. Each caster can have a respective swivel axis. At least one caster of the plurality of casters can be configured to be locked to prevent swiveling about its respective swivel axis and unlocked to enable swiveling about its respective swivel axis.
WHEELCHAIR FOR SPECIALIZED SPORTS APPLICATIONS
2021-09-16
Patent
Elektronische Ressource
Englisch
Marine structures engineering : specialized applications
TIBKAT | 1995
|Copper-vapor lasers find specialized applications
British Library Online Contents | 1993
|