Abstract: A foldable wheelchair comprises a substantially horizontally extending upper side frame member. An upper end of an axle plate is secured to the upper side frame member. An axle housing is secured to the axle plate. A cross brace is pivotally secured directly to the axle plate at the lower end of the axle plate. A wheel mount assembly comprises an axle sleeve mount having an internal thread. An axle sleeve has an external thread that is in threaded engagement with the internal thread of the axle sleeve mount. The axle sleeve has an internal bore that accepts a wheel axle. The internal bore is angled with respect to the axis of the external threads to provide camber to a wheel. The axle sleeve is adapted to provide lateral adjustment to the wheel by rotating the axle sleeve within the axle sleeve mount any number of complete revolutions.

Abstract: A foldable wheelchair comprises a substantially horizontally extending upper side frame member. An upper end of an axle plate is secured to the upper side frame member. An axle housing is secured to the axle plate. A cross brace is pivotally secured directly to the axle plate at the lower end of the axle plate. A wheel mount assembly comprises an axle sleeve mount having an internal thread. An axle sleeve has an external thread that is in threaded engagement with the internal thread of the axle sleeve mount. The axle sleeve has an internal bore that accepts a wheel axle. The internal bore is angled with respect to the axis of the external threads to provide camber to a wheel. The axle sleeve is adapted to provide lateral adjustment to the wheel by rotating the axle sleeve within the axle sleeve mount any number of complete revolutions.

Abstract: A wheel mount may generally be comprised of an axle plate and a camber tube clamp that may be height adjustable with respect to the axle plate. The camber tube clamp can be selectively mountable upright or inverted so as to increase an overall range of height adjustability. The camber tube clamp can be mountable in front of or behind the axle plate so as to increase an overall range of center-of-gravity adjustability. The camber tube clamp and the axle plate may have an interlocking feature that may allow the camber tube clamp to slide vertically along the axle plate to facilitate height adjustment. A seat collar can be positioned at various locations along a wheelchair frame for center-of-gravity adjustment. The axle plate can be detached from and attached to the seat tube collar to allow the axle plate and camber tube clamp to be reverse mounted in order to increase the range of center of gravity adjustment.