Loading implement and process for loading implement

Details Loading implement and process for loading implement Loading implement and process for loading implement

2006-09-06

2008-10-07

Lazo, Thomas E (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Independent control of bypass between opposed working chambers

Reexamination Certificate

active

07430953

ABSTRACT:
A loading implement and method of operating a loading implement for the adjustment of a floating condition of a boom of the loading implement. The loading implement includes a hydraulic arrangement for the lifting and lowering of the boom, a hydraulic conveying device, a hydraulic fluid tank, a hydraulic cylinder, a control implement connected to hydraulic supply lines for the control of the hydraulic cylinder, a first and a second hydraulic line connecting the hydraulic cylinder with the fluid tank and equipped with a first and a second selector valve, a lifting side load holding valve and a control unit for switching of the selector valves. In order to permit the activation of a floating condition without the boom being lowered uncontrollably, a sensor signals the position of the boom or the hydraulic cylinder to the control unit, which is configured to cause lowering of the boom and/or the switching into the floating condition as a function of the signal delivered by the sensor.

REFERENCES:
patent: 3472127 (1969-10-01), Scheidt
patent: 5415076 (1995-05-01), Krone et al.
patent: 6405633 (2002-06-01), Dueckinghaus et al.
patent: 7219592 (2007-05-01), Nielsen et al.
patent: 2004/0221714 (2004-11-01), Bitter et al.
patent: 14 50 048 (2004-02-01), None

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