Abstract: A brake device for use with wheelchairs of the type having a main frame and a pair of spaced apart large diameter driving wheels, such as rear wheels. The brake device is to be engaged by a secondary operator of a wheelchair and comprises a bracket or other mounting element for mounting to the wheelchair handles and a brake arm which is shiftable to a wheel locking position to move an actuator tube and attached stopper into engagement with the rear wheel of a wheelchair to lock the wheel against further rotation. The brake arm is also capable of being shifted to a reverse or non-locking position so that it moves the actuator tube and attached stopper out of engagement with the wheelchair driving wheel to a position where it can not be engaged with the driving wheel to permit free-wheeling movement thereof.

Abstract: A device is disclosed for detachably coupling a wheelchair to any bicyle such that they are transportable together as a unit without the need of anything or anyone other than the sole operator of the bicycle. The device allows the bicycle to travel in tandem with the wheelchair without any hindrance on mobility or agility. The device connects the wheelchair to the bicycle via the bicycle's front fork, and the device is substituted as the steering device.

Abstract: A device is disclosed for detachably coupling an oxygen carrier to wheelchair such that they are transportable together as a unit without the need of a separate operator of the cart. The device fits between the downwardly directed support arms of the wheelchair. The carrier is made in different lengths depending on the size of the wheelchair. In the only embodiment the oxygen tank or tanks are supported entirely on the wheel chair by the device.