Auxiliary frame with propulsion and steering means for attachment to wheelchair
Patent 5899476 Issued on May 4, 1999. Estimated Expiration Date: 
December 8, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 8, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3381973 3485510 Wheelchair convenience attachments Self-propelling and steering attachment for a wheel-chair Wheel chair auxiliary drive means Hand-pedalling attachment for wheel-chairs Auxiliary frame for a wheelchair and wheelchair for use with an auxiliary frame Bicylce with a double power train Patent #: 5533741 InventorApplicationNo. 986723 filed on 12/08/1997US Classes:280/250.1, Wheelchair type280/304.1WheelchairExaminersPrimary: Swann, J. J.Assistant: McClellan, Jim Attorney, Agent or FirmInternational ClassB62M 001/14AbstractAn auxiliary frame having propulsion and steering devices is combined with a wheelchair to form a composite vehicle therewith. A coupling mechanism is provided to couple the auxiliary frame to a wheelchair. A steerable wheel is mounted on the wheelchair to steer and provide forward and reverse movement to the wheelchair, and, a control device is provided to permit the operator to control the direction the wheelchair is to be driven. | |
