High-visibility mast assembly for lift trucks
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United States of America Patent
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Jul 30, 1985
Grant Date -
N/A
app pub date -
Jun 25, 1982
filing date -
Jun 25, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The mast assembly for a standard lift truck includes a lift system having a centrally-disposed hydraulic cylinder and a pair of chains mounted on the cylinder to selectively raise and lower a movable upright assembly on a fixed upright assembly and a carriage on the movable upright assembly. This arrangement impairs the forward field of vision of the operator. The mast assembly (11) of this invention overcomes this problem by securing opposite ends of a chain (17) to laterally space uprights (13,14) of a fixed upright assembly (12), entraining the chain (17) under at least one chain guide (20) mounted on a lower end of a movable upright assembly (15), and engaging the chain with a hydraulic cylinder (22) to selectively raise and lower the movable upright assembly (15) on the fixed upright assembly (12). The preferred embodiment of this invention also includes a carriage (25) slidably mounted on the movable upright assembly (15) and movable in response to movement of the movable upright assembly (15) on the fixed upright assembly (12 ).
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