Mast control mechanism

Details Mast control mechanism Mast control mechanism

1976-07-16

1977-10-18

Blunk, Evon C.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

214DIG10, B66F 920

Patent

active

040541851

ABSTRACT:
An upwardly extending mast is disposed adjacent the forward end of a vehicle main frame of a lift truck. A mounting plate device extends upwardly from the forward end of the main frame with the forward ends of a first pair of longitudinally extending vertically spaced parallel arms pivotally connected thereto. A second pair of longitudinally extending vertically spaced parallel arms have their rearward ends individually pivotally connected to the rearward ends of the first pair of arms and their forward ends pivotally connected to the mast. A vertical link has its opposite ends pivotally connected to the rearward ends of at least one pair of the arms while a motor device is provided to raise the mast relative to the main frame. A control linkage device is pivotally anchored to the main frame and pivotally connected to one arm of the first pair of arms and to the mast so that the control linkage device causes the mast to move in a substantially straight path as it is raised.

REFERENCES:
patent: 2877868 (1959-03-01), Gunning et al.

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