Land vehicles – Wheeled – Extensible
Patent
1988-04-08
1989-03-21
Pekar, John A.
Land vehicles
Wheeled
Extensible
254 2R, B66F 906
Patent
active
048137030
ABSTRACT:
A fork lift truck includes a loading portion to be raised including a loading fork. Pivot levers are connected to the loading fork and lifting wheels are supported in the pivot levers. A lifting linkage extends inside the fork arms. A vertical battery case is mounted on the end of the loading fork. A shaft is supported in the lower portion of the vertical battery case for actuating the lifting linkage. A drive portion includes a horizontal frame plate. A drive mechanism for steering the truck, a support wheel and a pivotable hydraulic cylinder are supported on the frame plate. A lever arm has a rectangular lever plate of spring steel which is twistable about its longitudinal axis, which has a ratio of length to width of substantially 3:1 and which is disposed on edge. The lever plate has one end with a bore formed therein in which the shaft supported in the loading portion is centrally disposed and welded. The lever plate has another end with another bore formed therein. A bearing bush has one end welded into the other bore formed in the lever plate and each end thereof has a respective bearing bore formed therein. A pivot lever is welded onto the lever plate eccentric to the bearing bush. The pivot lever has one end at least partially surrounding the bearing bush and another end having a transverse bore formed therein for rotatably receiving the lower end of the hydraulic cylinder.
REFERENCES:
patent: 3260534 (1966-07-01), Knights
Greenberg Laurence A.
Lafis Lagertechnik Fischer GmbH + Co. KG
Lamb Richard
Lerner Herbert L.
Pekar John A.
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