Truck mast

Details Truck mast Truck mast

2006-10-17

2006-10-17

Brahan, Thomas J. (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

Industrial lift truck or required component thereof

Having extensible vertical guide for load support

C187S234000

Reexamination Certificate

active

07121384

ABSTRACT:
A two- or multi-stage mast-hydraulic cylinder construction (4, 5) for a truck mast, and method for manufacturing the intergrated structer (4, 5), are discloused. The fixed mast assembly has its substantially vertical beams (4, 5) and its cylinder liners (29) provide an integrated structure (4, 5), wherein the cylinder liners (29) are constituted by channels integrated inside the beams (4, 5), said integrated structures having their centre of mass at the centre of the cylinder liner (29) or in the immediate vicinity thereof, that the integrated structure (4, 5) is capable of being manufactured by hot extrusion or cold drawing, and that the integrated structure (4, 5) is provided with one flange (13), one side of which comprises a bearing surface (16) and the opposite side comprises a support surface (17), said surfaces (16, 17) lying in a plane transverse to the operating direction of a truck, and with at least one second flange (19) for locating the centre of mass at the centre of the cylinder liner (29) or in the immediate vicinity thereof.

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European Standard EN 1726-1, ICS 53.060, “Safety of industrial trucks—Self-propelled trucks up to and including 10 000 kg capacity and industrial tractors with a drawbar pull up to and including 20 000 N—Part 1: General requirements,” by European Committee for Standardization , Nov. 1998, English version, 84 pages.
European Standard EN 1726-2, ICS 53.060, “Safety of industrial trucks—Self-propelled trucks up to and including 10 000 kg capacity and industrial tractors with a drawbar pull up to and including 20 000 N—Part 2: Additional requirements for trucks with elevating operator position and trucks specifically designed to travel with elevated loads,” by European Committee for Standardization, Sep. 2000, English version, 29 pages.

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