Elevator – industrial lift truck – or stationary lift for vehicle – Stairway assist for individual or minor barrier lift for...
Patent
1996-09-06
1999-01-26
Young, Karen M.
Elevator, industrial lift truck, or stationary lift for vehicle
Stairway assist for individual or minor barrier lift for...
187213, 187232, 187233, 187240, 14 695, 182 696, E06C 504, B66B 900, B66F 712, B66F 906
Patent
active
058628843
ABSTRACT:
The present invention is an improved wheeled, light-weight lift which meets standards for airline ground support vertical lift devices, specifically being capable of use on airport tarmacs in winds up to 90 mph. On and off-loading ramps are provided which are rotatable between an upright stored position and a horizontal working position. The ramps comprise a bridge structure supporting a plurality of louvred deck plates. Each louvre is linked to the others so as to remain oriented horizontal regardless of the ramps position for minimizing their aerodynamic profile and overturning moment. Outriggers are extendible from the frame so as to increase its base dimensions and thus the moment needed to overturn the lift. The outriggers retract into the frame to minimize storage. The outriggers are horizontally movable along their longitudinal axis to minimize the deployment space required. Lastly, it is preferable to increase the effective weight of the lift by providing wind deflection surfaces or airfoils to create a downward reactive force and thereby increase lift's resistance for overturning.
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patent: 5509502 (1996-04-01), Beaulieu
Adaptive Engineering Ltd.
Tran Thuy V.
Young Karen M.
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