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Class Information
Number: 60/429
Name: Power plants > Pressure fluid source and motor > Having condition responsive control in a system of separately operable power input pumps, pump motors, pump cylinders or pressure fluid sources > With externally operated multiway valve changing the relationships of the motive fluid pressurizing or supplying means
Description: Apparatus including a multiway valve that is externally manipulated to provide different operative relationships of the pressurizing means or pressure sources.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8701397 Operating oil supplying device and construction machine Apr. 22, 2014
8689550 Hydraulic control system in working machine Apr. 8, 2014
8607557 Hydraulic control system for excavator Dec. 17, 2013
8572957 Hydraulic system for construction equipment Nov. 5, 2013
8522541 Hydraulic circuit of winch for crane Sep. 3, 2013
8516811 Oil pressure system and valve assembly used in oil pressure system Aug. 27, 2013
8146356 Procedure to align working equipment mounted to a liftable and lowerable hoisting frame of a working machine Apr. 3, 2012
7992384 Hydraulic control device of construction machinery Aug. 9, 2011
7810321 Relief pressure switching apparatus for hydraulic working machine Oct. 12, 2010
7788920 Hydraulic pump with control system Sep. 7, 2010
7665299 Hydraulic power management system Feb. 23, 2010
7657355 Device for actuating a bending mast in a large manipulator and a large manipulator comprising said device Feb. 2, 2010
7559197 Combiner valve control system and method Jul. 14, 2009
7520130 Hydraulic pressure control device of construction machine Apr. 21, 2009
7497080 Hydraulic controlling device of working machine Mar. 3, 2009
7499783 Hydraulic control apparatus for hydraulic excavator Mar. 3, 2009
7478531 Hydraulic circuit for heavy construction equipment Jan. 20, 2009
7412826 Hydraulic system for work vehicle Aug. 19, 2008
7331175 Hydraulic system having area controlled bypass Feb. 19, 2008
7178333 Hydraulic control system for hydraulic excavator Feb. 20, 2007
7155908 Hydraulic system for heavy equipment option apparatus Jan. 2, 2007
7150288 Control valve apparatus Dec. 19, 2006
7059124 Hydraulic control apparatus for work machines Jun. 13, 2006
7017703 Four wheel traction control valve Mar. 28, 2006
6892535 Hydraulic circuit for boom cylinder combination having float function May. 17, 2005
6868671 Hydraulic circuit for a crane Mar. 22, 2005
6810663 Fluid pressure circuit control system Nov. 2, 2004
6772589 Hydraulic system with variable fluid flow under pressure to fluid-operated consumers Aug. 10, 2004
6764126 Hydraulic actuating device for a cover with associated lock Jul. 20, 2004
6708490 Hydraulic system for construction machine Mar. 23, 2004
6681571 Digital controlled fluid translating device Jan. 27, 2004
6658972 Full force web severer Dec. 9, 2003
6612109 Hydraulic power boost system for a work vehicle Sep. 2, 2003
6508503 Hydraulic actuating device for a folding roof of a motor vehicle Jan. 21, 2003
6357231 Hydraulic pump circuit for mini excavators Mar. 19, 2002
6244048 Hydraulique drive device Jun. 12, 2001
6170261 Hydraulic fluid supply system Jan. 9, 2001
6164069 Hydraulic drive system for construction machine Dec. 26, 2000
6148548 Construction machine Nov. 21, 2000
6149221 Hydraulic control unit, in particular for operating a folding roof of a vehicle Nov. 21, 2000
6145287 Hydrostatic circuit for harvesting machine Nov. 14, 2000
6128900 Hydraulic fluid supply system Oct. 10, 2000
6018895 Valve stack in a mini-excavator directing fluid under pressure from multiple pumps to actuable elements Feb. 1, 2000
5996341 Hydraulic control circuit in a hydraulic excavator Dec. 7, 1999
5992721 Rodless cylinder rope tensioning apparatus Nov. 30, 1999
5970709 Hydraulic control circuit in a hydraulic excavator Oct. 26, 1999
5950428 Apparatus for improving the operating capability of a construction machine during a fine operation mode and method for the same Sep. 14, 1999
5950426 Hydraulic circuit for hydraulic machine Sep. 14, 1999
5946910 Hydraulic circuit for hydraulically driven working vehicle Sep. 7, 1999
5890303 Hydraulic by-pass circuit for a hydraulic shovel Apr. 6, 1999

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