Abstract: Systems, methods, and apparatuses for preparing a device, such as a wheelchair, for assembly are provided. Anatomical measurements of an intended user of the device may be received. Frame properties for the device may be determined. The frame properties may be determined based on the one or more anatomical measurements of the user. A material for constructing part or all of the frame of the device may be determined. The material may be determined based on the frame properties. One or more parts for the frame may be converted from a three-dimensional shape to a two-dimensional part shape. A nesting arrangement for the parts of the device to be cut from the material may be determined on a sheet of the material. A bending order for bending the parts may also be determined. The parts of the device may be cut from the sheet material, bent, and assembled.

Abstract: 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.

Abstract: 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.