Patent ID: 8720650

Claim:
A hub assembly for a wheelchair, the hub assembly comprising: a hub device having a hub shell having an inner surface; an axle mounted through the hub shell, wherein the hub shell is capable of rotating relative to the axle; a ring securely mounted in the hub shell and having an outer surface; an inner surface; a threaded section formed around the outer surface of the ring and securely connected with the inner surface of the hub shell; and a tooth section formed around the inner surface of the ring; and a ratchet rotatably mounted around the axle and having an outer surface; a pawl section formed on the outer surface of the ratchet and engaging the tooth section of the ring; and a cylinder section radially protruding from the ratchet, adjacent to the pawl section and having an outer surface; and a recess formed in the outer surface of the cylinder section and extending along a line parallel to an axis of the ratchet; and a switch device connected with the hub device and having a housing mounted through by the axle and having a housing receptacle formed in the housing and having a housing opening facing the hub shell; a pin mounted into the housing and capable of being selectively inserted into the recess; a mount mounted on the housing and having a mount aperture formed in the mount; and a wire slidably mounted through mount aperture and securely connected with the pin.