A wheelchair lift having a logic module which provides several interlocks that promote proper operation is described. The logic module may be programmed to enable efficient user interface and to compensate for variations in lift operation parameters. In one embodiment, the wheelchair lift has an arm...http://www.google.com.tw/patents/US7632058?utm_source=gb-gplus-share專利 US7632058 - Wheelchair lift and method for operating the same
