B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
214/1
B66F 9/22 (2006.01)
Patent
CA 1040595
APPLICATION OF: WALTER J. PLEI?R FOR: HYDRAULIC SYSTEMS FOR TWO SPEED LIFTING A B S T R A C T Hydraulic systems particularly adaptable for use in industrial lift trucks utilizing two or more hydraulic cylinders to lift a load. The cylinders are positively connected to the load, and valve means are provided for directing pressurized fluid to the working chambers of all cylinders when heavily loaded and to fewer cylinders when lightly loaded. Other valve means are provided for directing fluid to the working chambers of the unpressurized cylinders.
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