Material or article handling – Elevator or hoist and loading or unloading means therefor – Elevator wherein means comprises guide mounted for relative...
Patent
1986-04-03
1987-11-24
Werner, Frank E.
Material or article handling
Elevator or hoist and loading or unloading means therefor
Elevator wherein means comprises guide mounted for relative...
414637, 414673, 414634, 187 9E, 180 41, B66F 922
Patent
active
047085770
ABSTRACT:
A fork lift truck includes a mast support bar to which the mast supporting carriage and fork lift tines are mounted. The mast support bar includes a central arc-shape segment on which a concentric arc-shape mast support sleeve is slidably mounted. The mast is mounted to the sleeve and power means are provided to slide the sleeve in either direction on the mast support bar. When the fork lift truck encounters uneven ground so that the wheels on one side of the truck are higher than the wheels on the other, the operator will slide the mast support sleeve with respect to the mast support bar to keep the mast in a vertical position over the truck.
REFERENCES:
patent: 2059150 (1936-10-01), Schroeder
patent: 2126289 (1938-08-01), Schroeder
patent: 2707063 (1955-04-01), Gran et al.
patent: 3086670 (1963-04-01), Cuendet
patent: 3482722 (1969-12-01), Simovich
patent: 3515301 (1970-06-01), Emke
patent: 3893580 (1975-07-01), Stevens
Allis-Chalmers Lift Trucks, Industrial Truck Buyer's Guide, Doc. MH-1102A (4-1985).
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