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Class 60/470 - Externally operated multiway valve or interconnected control elements control motive fluid for a limited stroke to-and-fro device


Subclass of Class 60 - Power plants
Definition: Apparatus including structure controlling flow of motive
No. of patents: 10
Last issue date: 10/20/2009


NumberTitleIssue Date
7603856Heavy-construction machine
A heavy-construction machine (1) including a working implement (5) having one or a number of arms (6) articulated with regard to the chassis (2) of the machine. An assembly consisting of at least one hydraulic cylinder (7) that cau...
10/20/2009
7137330Vehicle seat adjustment with actuator isolation valves
A fluid powered vehicle seat adjustment system comprising a fluid actuator a source of pressurized hydraulic fluid and a controller. The fluid actuator including first and second inlet/outlet conduits, and the controller selectively controlling and directing pressur...
11/21/2006
7080663Valve assembly
A valve assembly for load pressure-independent control of consumers is disclosed, which includes a main valve having a directional element and a metering throttle part. The valve assembly includes a shut-off valve for leakage-free shutting off of a work line leading...
07/25/2006
6923285Attachment control device
The present invention provides an attachment for use with a power machine. An attachment control device includes a controller, such as a microprocessor, a microcontroller or other digital computer which senses the type of attachment and controls power to the attachm...
08/02/2005
6260357Quick coupler control system
A quick coupler for coupling an implement to a work machine is provided with a control system that substantially prevents inadvertent and unintended release of the implement from the machine. Inadvertent and unintended release of the implement is prevente...
07/17/2001
6260355Hydraulic control system for a mobile work machine, especially a wheel loader
An hydraulic control arrangement which is chiefly used for a mobile working machine, especially for a wheel loader, and has at least one hydraulic cylinder with the aid of which a working tool can be moved, a directional control valve for controlling the ...
07/17/2001
4735049Operating system for a tree harvester
A tree-harvester operating system for controlling in particular the tree-feeder motors (5), the crosscut saw (6) and the cylinder (18) operating the function of the feeder and the limbing blades, especially in grapple processors. A simple operating system...
04/05/1988
4215546Hydrostatic transmission control system
A hydrostatic transmission control system including a variable displacement pump driving a constant displacement motor arranged in a hydraulic circuit having a controlled by-pass valve interconnected for positioning the pump swash plate in two established...
08/05/1980
4012175Valve and pump control for a hydraulic system
The operation of a 4-way, open-center, three position hydraulic valve is coordinated with the operation of the pump for the hydraulic system in which the valve is controlling flow. As the valve is moving from its open-center position to either one of its ...
03/15/1977
3971214Assisted hydraulic control
The invention relates to an assisted hydraulic control, especially for steering all types of vehicles, and comprising a double-acting receiver or hydraulic cylinder, the piston of which forms two chambers in the cylinder, the piston rod extending into one...
07/27/1976
 
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