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Class Information
Number: 60/428
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
Description: Apparatus including plural motive fluid pressurizing structures or pressure fluid sources including one, the delivery or output of which may be varied relative to that of another; the apparatus including a means responsive to a condition of the apparatus or to an external condition.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621123 |
Actuator control system and method |
Nov. 24, 2009 |
| 7614225 |
Straight traveling hydraulic circuit |
Nov. 10, 2009 |
| 7610754 |
Fluid pressure unit and fluid pressure unit control method |
Nov. 3, 2009 |
| 7597168 |
Low engine speed steering performance |
Oct. 6, 2009 |
| 7516613 |
Hydraulic drive system |
Apr. 14, 2009 |
| 7481051 |
Tree feller power management |
Jan. 27, 2009 |
| 7481053 |
Hydraulic pressurizer system |
Jan. 27, 2009 |
| 7469534 |
Load control structure for work vehicle |
Dec. 30, 2008 |
| 7464545 |
Hydraulic system and work machine comprising such a system |
Dec. 16, 2008 |
| 7412827 |
Multi-pump control system and method |
Aug. 19, 2008 |
| 7281370 |
Fan revolution speed control method |
Oct. 16, 2007 |
| 7272928 |
Hydraulic circuit of construction machinery |
Sep. 25, 2007 |
| 7127887 |
Oil pressure circuit for working machines |
Oct. 31, 2006 |
| 6997098 |
Method and apparatus for driving hydraulic motors with agricultural tractors |
Feb. 14, 2006 |
| 6990807 |
Auxiliary hydraulic drive system |
Jan. 31, 2006 |
| 6931846 |
Equalizing flow from pressure compensated pumps, with or without load sensing, in a multiple pump circuit |
Aug. 23, 2005 |
| 6763863 |
Hydraulic circuits for tree-harvesting knuckle booms |
Jul. 20, 2004 |
| 6732512 |
Velocity based electronic control system for operating hydraulic equipment |
May. 11, 2004 |
| 6708490 |
Hydraulic system for construction machine |
Mar. 23, 2004 |
| 6681818 |
Hydraulic circuits for tree-harvesting knuckle booms |
Jan. 27, 2004 |
| 6658972 |
Full force web severer |
Dec. 9, 2003 |
| 6498973 |
Flow control for electro-hydraulic systems |
Dec. 24, 2002 |
| 6477837 |
Method for operating hydraulic drive apparatus |
Nov. 12, 2002 |
| 6443196 |
Hydraulic circuits for tree-harvesting knuckle booms |
Sep. 3, 2002 |
| 6293765 |
Tandem fixed displacement pump with torque control |
Sep. 25, 2001 |
| 6240353 |
Industrial vehicle |
May. 29, 2001 |
| 6003313 |
High pressure to low pressure exchange system for hydraulic drives |
Dec. 21, 1999 |
| 5913663 |
Device for regulating the total power of at least two variable displacement hydrostatic pumps |
Jun. 22, 1999 |
| 5875630 |
Hydraulic drive assembly |
Mar. 2, 1999 |
| 5829251 |
Hydraulic control circuit for working components, in particular in earth-moving machines |
Nov. 3, 1998 |
| 5682742 |
Apparatus and method for controlling driving of a ram of a hydraulic cylinder of a hydraulic press equipment |
Nov. 4, 1997 |
| 5673558 |
Hydraulic circuit system for hydraulic excavator |
Oct. 7, 1997 |
| 5600952 |
Auxilliary drive apparatus |
Feb. 11, 1997 |
| 5584640 |
Grain tank unloading auger drive means |
Dec. 17, 1996 |
| 5533555 |
Delimbing apparatus having selective closable guide arms |
Jul. 9, 1996 |
| 5522212 |
Rod equal displacement cylinder in a rapid transfer and feed system |
Jun. 4, 1996 |
| 5481874 |
Exhaust pressurizing circuit including flow amplification |
Jan. 9, 1996 |
| 5481873 |
Hydraulic actuating system for a fluid transfer apparatus |
Jan. 9, 1996 |
| 5481872 |
Hydraulic circuit for operating plural actuators and its pressure compensating valve and maximum load pressure detector |
Jan. 9, 1996 |
| 5477677 |
Energy recovery device |
Dec. 26, 1995 |
| 5474485 |
Animation method and device |
Dec. 12, 1995 |
| 5469646 |
Fine operation mode changeover device for hydraulic excavator |
Nov. 28, 1995 |
| 5337561 |
Ultra high pressure multiple intensifier system |
Aug. 16, 1994 |
| 5335494 |
Hydraulic system for reel mower vehicles |
Aug. 9, 1994 |
| 5335926 |
Hydraulic actuating apparatus for opening and closing a vehicle cover with auxiliary manual hydraulic pump |
Aug. 9, 1994 |
| 5333997 |
Device for the power control of at least two hydrostatic variable displacement pumps |
Aug. 2, 1994 |
| 5332053 |
Hydraulic drive system |
Jul. 26, 1994 |
| 5325669 |
Low breakout hydraulic power transfer unit and method of operation thereof |
Jul. 5, 1994 |
| 5313795 |
Control system with tri-pressure selector network |
May. 24, 1994 |
| 5289681 |
Power steering system |
Mar. 1, 1994 |
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