Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Industrial
Class Information
Number: 91/531
Name: Motors: expansible chamber type > Plural relatively movable or rigidly interconnected working members > With means to control the working fluid to one working member for movement relative to another without controlling the working fluid to the other working member by said means > Control means includes separate control valves for each working member > With additional control valve in series with at least one separate control valve in supply line to one of motors
Description: Apparatus and further including a second valve between the source and one of the motors, the second valve being disposed in serial relationship with respect to at least one of the control valves.


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
7008168 Implement attachment interface for the coupling of operating implements to a utility vehicle and valve arrangement Mar. 7, 2006
6945335 Oil-pressure controlling device for earthmoving machine Sep. 20, 2005
6715403 Independent and regenerative mode fluid control system Apr. 6, 2004
6715402 Hydraulic control circuit for operating a split actuator mechanical mechanism Apr. 6, 2004
6481506 Dual tilt control system for work vehicle Nov. 19, 2002
6029446 Multifunction valve stack Feb. 29, 2000
5715865 Pressure compensating hydraulic control valve system Feb. 10, 1998
5680759 Straight travelling apparatus for heavy construction equipment Oct. 28, 1997
5562019 Hydrostatic drive system Oct. 8, 1996
5279122 Hydraulic circuit apparatus for supplying fluid under pressure into hydraulic cylinders for work implement Jan. 18, 1994
5267440 Hydraulic control system for construction machine Dec. 7, 1993
5243820 Hydraulic circuit with compensator valve biased with highest pressure acting on actuators Sep. 14, 1993
5237908 Control system for the load-independent distribution of a pressure medium Aug. 24, 1993
5209063 Hydraulic circuit utilizing a compensator pressure selecting value May. 11, 1993
5152143 Hydraulic drive system Oct. 6, 1992
5142963 Load referenced pressure reducing valve Sep. 1, 1992
5083430 Hydraulic driving apparatus Jan. 28, 1992
5079919 Hydraulic drive system for crawler mounted vehicle Jan. 14, 1992
5056312 Hydraulic drive system for construction machines Oct. 15, 1991
5046312 Swivel speed control circuit for working vehicle Sep. 10, 1991
5038671 Control valve Aug. 13, 1991
4986074 Hydraulic cylinder control system for garbage collection truck lift-dump handler Jan. 22, 1991
4945723 Flow control valves for hydraulic motor system Aug. 7, 1990
4938023 Swing-frame motor flow and sensed load pressure control system for hydraulic excavator Jul. 3, 1990
4938022 Flow control system for hydraulic motors Jul. 3, 1990
4875337 Construction machine dual-dump hydraulic circuit with piloted arm-boom cylinder supply priority switching valves Oct. 24, 1989
4852660 Grader blade having a pressurized float position Aug. 1, 1989
4767256 Method of operating a boom Aug. 30, 1988
4745844 Control block comprising a plurality of valve units for a plurality of hydraulic drives, in particular fork lift trucks May. 24, 1988
4693272 Post pressure compensated unitary hydraulic valve Sep. 15, 1987
4658705 Control system for hydraulic fluid pressure Apr. 21, 1987
4622998 Hydraulic control device Nov. 18, 1986
4617854 Multiple consumer hydraulic mechanisms Oct. 21, 1986
4570661 Hydraulic fluid supply systems Feb. 18, 1986
4561824 Hydraulic drive system for civil engineering and construction machinery Dec. 31, 1985
4561341 Hydraulic circuitry for a backhoe Dec. 31, 1985
4558629 Hydraulic control means for pipe thrust-jacking apparatus Dec. 17, 1985
4535681 Fluid operated transmission control system Aug. 20, 1985
4528892 Hydraulic circuit system for construction machine Jul. 16, 1985
4523886 Container handler with programmed electro-hydraulic control circuit Jun. 18, 1985
4519420 Hydraulic valves May. 28, 1985
4519419 Hydraulic valves May. 28, 1985
4467894 Fluid power system Aug. 28, 1984
4456077 Device for reciprocating motion of a rotating drilling body of a drilling machine Jun. 26, 1984
4431365 Pressure control mechanism for a grapple skidder Feb. 14, 1984
4341149 Selectively actuatable fluid control system for a work element Jul. 27, 1982
4298106 Method and apparatus for braking torque amplifier Nov. 3, 1981
4244405 Tree shear head and controls therefor Jan. 13, 1981
4222581 Apparatus and method for moving a large object Sep. 16, 1980
4210061 Three-circuit fluid system having controlled fluid combining Jul. 1, 1980

1 2


 
 
  Recently Added Patents
Internal sensor with disturbing current reduced by compensation branches
Integrated circuits with substrate protrusions, including (but not limited to) floating gate memories
Planar light source
Roof fascia with extension cleat
Bonding a non-metal body to a metal surface using inductive heating
Pixel based machine for patterned wafers
Robust, optimal subsonic airfoil shapes
  Randomly Featured Patents
Multi-level crossing maze toy
Wrist watch
Vibratory child pacifying device
System and method for improving compliance of a medical regimen
Door or window frame assembly
Conveyor belt zipper
Methods for treating joint inflammation, pain, and loss of mobility
Unsaturated aminodicarboxylic acid derivatives
Catalyst for oxidative NEF reaction using basic hydrogen peroxide
Device for determining the granulometric composition of a mixture of particles by diffraction of light