Abstract: Automatic locking systems for wheelchairs have a locking hub for attachment to a main wheel of the wheelchair, and a lock pin which is reciprocally rectilinearly moveable between locked and unlocked conditions with the lock hub. A rotary actuator is operatively coupled to the lock pin and is rotatable between normal and active positions which responsively causes the lock pin to move rectilinearly between its unlocked and locked positions, respectively. A pivotal actuator lever is provided having one end positionable in close proximity to a seat of the wheelchair. The actuator lever is thus mounted for pivotal movements between raised and lowered conditions relative to the wheelchair seat. A flexible actuator cable connects a proximal end of the actuator lever and the rotary actuator.

Abstract: An automatic braking wheelchair having an automatic braking assembly which automatically locks one or both wheels of a wheelchair when the patient attempts to rise.

Abstract: An automatic braking wheelchair having an automatic braking assembly which automatically locks one or both wheels of a wheelchair when the patient attempts to rise. The automatic braking assembly includes a movable seat, a locking bar connected to the movable seat having a cavity therein for receipt of the axle, and a locking member rigidly connected to the hub of the wheel which is received in the cavity of the locking bar to selectively lock the hub and wheel in a stationary position.