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---- PROTOTYPE --------- PURPOSE: To create a prototype of a elevating wheelchair which allows individuals with mobility disabilities to access items out of vertical reach and/or to have visual access to items that could be seen by an individual standing. Two students focused on this problem for a final year project. Their answer is to lift the wheelchair and/or the occupant. The detailed answer is in a 130 page formal engineering report with 13 AutoCAD drawings to support the idea. The base was an Everest & Jennings 'Traveller' wheelchair, but the idea could be adapted to almost any style. The lifting mechanism is a ball screw shaft housed in two telescoping square tubes (one over the other). The shaft rotates through the use of flexible cables, right angle gear boxes to a pan 12 volt motor . There is a safety device on each shaft (L & R sides of the seat). The height was based on the internationally recognized height of 1600 millimeters of public signs. The portability was retained as the drive mechanism was designed to be removed, hence the chair could be folded. This design could be adapted to powered chairs also. TITLE: The Elevating Wheelchair. WEBSITE: Workshop Solutions. REF: http://www.workshopsolutions.com/COMPLETE/elevate1.htm.
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