Lifting truck with displaceable masts and balancing cylinder

Details Lifting truck with displaceable masts and balancing cylinder Lifting truck with displaceable masts and balancing cylinder

2007-02-13

2007-02-13

Brahan, Thomas J (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

Industrial lift truck or required component thereof

Having specific drive-means for load support

C187S226000

Reexamination Certificate

active

10453025

ABSTRACT:
A lifting truck with a telescoping mast and a balancing cylinder is disclosed. The stages of the mast are each constructed with three vertical beams. A mechanism for extending the mast are contained in or near the side beams. The balancing cylinder exerts an upward force to counter the dead weight of the telescoping stages and other parts of the truck that are lifted. The balancing cylinder is connected to the lower portion of the first stage and the upper portion of the second stage. The beams making up the stages of the mast can be tubular or U-shaped to allow space for the balancing cylinder and/or hydraulic lines or control leads.

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