Ultra light wheelchair
Patent 4592570 Issued on June 3, 1986. Estimated Expiration Date: 
October 27, 2003. 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.
October 27, 2003. 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 1620657 1851843 2022348 3243194 3882949 Adjustable wheel chair Reclining vehicle seat Sport type wheel chair Folding wheel-chair Folding scissor frame wheel chair InventorAssigneeApplicationNo. 06/545882 filed on 10/27/1983US Classes:280/650, Chair or stroller for seated occupant280/250.1, Wheelchair type297/378.12Held erect by a releasable latchExaminersPrimary: Love, John J.Assistant: Dukes, Mark C. Attorney, Agent or FirmInternational ClassesA61G 5/00 (20060101)A61G 5/08 (20060101) A61G 5/10 (20060101) AbstractThe ultra light chair is designed for greater stability, higher performance, higher efficiency and overall better appearance than conventional chairs. A seat frame is provided separate from the main frame with seat mountings permitting longitudinal, tilt and height adjustments of the seat on the main frame. Unique wheel mountings permit simple manual removal and attachment of the wheels to the main frame, using only one hand. The same wheel mountings permit adjustment of the camber angle of each wheel relative to a vertical plane so that propelling and maneuvering of the wheelchair can be made easier than in the absence of any camber. The seat back for the chair is designed to fold down over the seat frame so that this feature in combination with easy removal of the wheels provides for compact storage during travel. | |
