Material or article handling – Self-loading or unloading vehicles – Loading or unloading by other carrier or mover means – and...
Patent
1994-02-18
1995-08-08
Hupert, Michael S.
Material or article handling
Self-loading or unloading vehicles
Loading or unloading by other carrier or mover means, and...
414921, 105447, 280166, B60P 146
Patent
active
054393426
ABSTRACT:
An improved safety barrier/ramp actuation mechanism for combination folding stair and platform wheelchair lifts which translate from one configuration to the other depending upon the purpose to be served and have a combination safety barrier/ramp at the outboard end of the platform, the mechanism comprising a triple link mechanism and internally contained piston and bellcrank for reciprocating said barrier/ramp, and a pressure relief for said system to prevent raising said barrier/ramp when a load is resting thereon in ramp position, and the invention includes new steps in the method of operation of the stair and lift combination to enhance the safety thereof.
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patent: 5284414 (1994-02-01), Kempf
Hall John C.
Petersen, Jr. Lee B.
All American Transit Parts, Inc.
Eller Jr. James T.
Hupert Michael S.
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