Lifting framework for an industrial truck

Elevator – industrial lift truck – or stationary lift for vehicle – Industrial lift truck or required component thereof – Having extensible vertical guide for load support

Reexamination Certificate

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Details

C187S234000, C187S238000, C414S631000, C414S785000, C182S002110

Reexamination Certificate

active

07407038

ABSTRACT:
A lifting framework for an industrial truck has an extendible mast guided on a guide mast by rollers. Means are provided for bracing the extendible mast with the guide mast so as to prevent the extendible mast from inclining in the lateral direction of the lifting framework relative to the guide mast. The bracing means are configured such that, when the extendible mast is located in the top end position, a vertical movement of the extendible mast relative to the guide mast is prevented in the region of each of the two columns. A hydraulic lifting cylinder and a stop for the top end position of the extendible mast are arranged here in the region of each column.

REFERENCES:
patent: 2670811 (1954-03-01), Shaffer
patent: 3172339 (1965-03-01), Quayle
patent: 3208556 (1965-09-01), Shaffer
patent: 3252545 (1966-05-01), Quayle
patent: 3394778 (1968-07-01), Brinton
patent: 3534664 (1970-10-01), Ulinski
patent: 3709393 (1973-01-01), McGehee
patent: 4008648 (1977-02-01), Farmer et al.
patent: 4261438 (1981-04-01), Olson
patent: 4392554 (1983-07-01), Russey
patent: 3529601 (1987-03-01), None
patent: 1 406 561 (1975-09-01), None
patent: 1 520 990 (1978-08-01), None
patent: 2 016 410 (1979-09-01), None
patent: 2 171 666 (1986-09-01), None
patent: 436796 (1974-07-01), None

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