Patent ID: 6405831
Filing Date: 2002-06-18
Classification: B66F,E06C

Abstract:
A lift unit for removing a human from an enclosure having a top opening, comprising:a wheeled vehicle having a chassis, a horizontally disposed platform including a portion having vertically open entryway and three support members spaced about said entryway, a support structure between said chassis and said platform in the form of an extension ladder having a butt section secured to said chassis and an extensible fly section supporting said platform, an apparatus operable to extend and contract said ladder to raise and lower said platform, said platform being disposed in elevated position above said chassis wherein a portion extends horizontally beyond a perimeter of said wheeled vehicle in one direction to permit said entryway to be positioned above said top opening of said enclosure, a lift tripod having an apex positioned above said open entryway, three legs having upper ends connected to said apex and lower ends supported, respectively, by said support members, and a pulley rotatably supported on said apex, and a winch including a lift cable reeved on said pulley and having a free end adapted for connection to a human lift harness.