| Patents for F15B 19 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere (1,602) |
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| 06/19/2013 | CN203009454U Hydraulic comprehensive test bed |
| 06/19/2013 | CN103161783A System and method for determining accumulator fill |
| 06/13/2013 | WO2013085086A1 Hydraulic system for construction equipment |
| 06/12/2013 | CN202991719U Oil suction filter blocking automatic detection and bypass continuous oil supply device |
| 06/12/2013 | CN202991710U Hydraulic system internal leakage detecting device |
| 06/12/2013 | CN202991681U Drilling IBOP (internal blowout preventer) protection system |
| 06/12/2013 | CN103148056A Hydraulic device leakage measuring device |
| 06/12/2013 | CN103148055A Electro-hydraulic servo valve frequency characteristic test system |
| 06/12/2013 | CN103148051A Hydraulic cylinder, hydraulic cylinder control system containing hydraulic cylinder, and engineering machinery |
| 06/12/2013 | CN103148042A Control valve block system and method for testing hydraulic cylinders |
| 06/06/2013 | WO2013081874A1 System and method for controlling hydraulic system based on temperature |
| 06/05/2013 | CN202971417U Plunger cylinder pressure-tight test device |
| 06/05/2013 | CN202971416U Hydraulic driving device for gear backlash detection |
| 06/05/2013 | CN103133462A Automatic venting and pressure-measuring joint |
| 06/05/2013 | CN103133459A Spill early warning method and device and engineering machinery for hydraulic system |
| 06/05/2013 | CN103133458A Internal leakage quantity detection device of hydraulic valves |
| 06/05/2013 | CN103133457A Hydraulic test detection circuit |
| 05/29/2013 | EP2596252A1 Method and device for treatment of liquid in a hydraulic system |
| 05/29/2013 | DE102012220179A1 Method for checking correct filling of e.g. hydraulic clutch operating system with pressurizing medium in motor vehicle, involves ensuring correct filling of system when pressure gradient is larger than given pressure gradient level |
| 05/29/2013 | DE102009052631B4 Verfahren zur Erhöhung der Verfügbarkeit von Weg-/Positionsmesssystemen auf Basis von Potentiometern mit Schleiferabgriff (III) A method for increasing the availability of displacement / position measurement systems based on sliding contact potentiometers (III) |
| 05/29/2013 | CN202955069U Rotary oil cylinder testing mechanism |
| 05/29/2013 | CN202955068U Pump control switching device of multi-way valve test-bed |
| 05/29/2013 | CN202955067U Testing device for soft-reduction hydraulic cylinder manifold blocks on sector sections of rolling mills |
| 05/29/2013 | CN202955066U Test loop of double-acting three-way proportional pressure reducing valve |
| 05/22/2013 | CN202946481U Hydraulic component testing device |
| 05/15/2013 | CN103104573A Device and method for testing high-frequency on-load frequency catachrestic of large-size hydraulic cylinder |
| 05/08/2013 | CN202926758U Hydraulic oil cylinder detection auxiliary device |
| 05/08/2013 | CN202926757U Load simulation and test system of engineering machine |
| 05/08/2013 | CN103089748A Electromagnetic pilot valve service life testing device and testing method thereof |
| 05/08/2013 | CN103089747A Hydraulic circuit for measuring effective work during continuous working stroke of crank pressure machine |
| 05/01/2013 | CN202914442U Hydraulic lock overhauling device |
| 05/01/2013 | CN103075388A Hydraulic variable-stroke finely-tunable positioning locking type hydraulic cylinder testing rack |
| 04/25/2013 | WO2013059018A1 Meterless hydraulic system having flow sharing and combining functionality |
| 04/25/2013 | WO2013058935A1 Meterless hydraulic system having multi-circuit recuperation |
| 04/25/2013 | WO2013057671A1 Apparatus and method for calibrating a valve |
| 04/25/2013 | WO2013057667A1 Oil-hydraulic valve |
| 04/24/2013 | CN202900838U Bi-directional closed type loading return circuit system in test platform of hydraulic motor |
| 04/24/2013 | CN202900837U Return oil integrating machine |
| 04/24/2013 | CN103062164A Overload protection debugging control method, overload protection debugging control device, overload protection debugging control system and engineering machine |
| 04/24/2013 | CN103062156A Flow distribution method and system for load sensing system |
| 04/24/2013 | CN103062155A Modularization hydraulic comprehensive testing system and testing method thereof |
| 04/24/2013 | CN102052365B Test bench for hydraulic excavator pump valve |
| 04/18/2013 | WO2013054954A1 Actuator displacement measurement system in electronic hydraulic system of construction equipment |
| 04/17/2013 | EP2581609A1 A method of detecting failure of a servo-valve, and a servo-valve applying the method |
| 04/17/2013 | CN202883553U Hydraulic lifting oil cylinder load testing machine |
| 04/17/2013 | CN103047224A Leakage measurement system |
| 04/11/2013 | WO2013052430A1 Hydraulic system bi-directional regeneration |
| 04/10/2013 | CN202867423U Hydraulic cylinder test bed |
| 04/10/2013 | CN103033215A Engineering machinery hydraulic system medium pollution diagnostic method based on digital signal processor (DSP) |
| 04/10/2013 | CN103032411A On-line real-time monitoring method and device for failure of hydraulic motor of large-sized plate bending roll |
| 04/10/2013 | CA2791775A1 Fault detection process and device for a servovalve |
| 04/03/2013 | CN202851523U Measurement and control platform device |
| 04/03/2013 | CN202851522U Load oil cylinder inner discharging online test valve |
| 04/03/2013 | CN202851483U Lathe feed hydraulic system |
| 04/03/2013 | CN103016454A Monitoring device for servo valve |
| 04/03/2013 | CN103016453A Impulse test system of hydraulic hose |
| 04/03/2013 | CN103016452A Method and device for recovering and using energy produced in hydraulic motor load test |
| 04/03/2013 | CN103016451A Testing device for circular hydraulic cylinder of clutch |
| 03/27/2013 | CN202833430U Single-action sleeve hydraulic cylinder vertical simulation test stand discharge device |
| 03/27/2013 | CN202833429U Energy accumulator inflation pressure online testing device of hydraulic system |
| 03/27/2013 | CN202833428U Cleaning detection apparatus of accumulator |
| 03/27/2013 | CN102352879B Fatigue test system for hydraulic oil tank for engineering machinery |
| 03/20/2013 | CN202811654U Hydraulic driving pump detection equipment |
| 03/20/2013 | CN102979785A Test platform for oil cylinder |
| 03/13/2013 | CN202789855U Performance test system of fan hydraulic pressure station |
| 03/13/2013 | CN202789854U Portable testing device for inner leakage detection of hydraulic oil cylinder |
| 03/13/2013 | CN202789853U Part debugging device for heading machine |
| 03/13/2013 | CN202789852U CCD (Charge Coupled Device)-based oil leak detection device of hydraulic system of wind turbine generator |
| 03/13/2013 | CN102966641A High/low-pressure composite online circulating flushing and pressure testing device for hydraulic system |
| 03/13/2013 | CN102966630A Detection method for constant-flow oil return channel |
| 03/13/2013 | CN102966629A Modeling method for simulation model of load-sensitive variable pump |
| 03/13/2013 | CN102966628A Load simulating and testing system and method for engineering machinery |
| 03/13/2013 | CN102966627A Ultrahigh-pressure large-flow stand column hydraulic part test bench |
| 03/07/2013 | WO2013009467A3 Hydraulic accumulator fluid charge estimation system and method |
| 03/06/2013 | EP2564279A1 Control valve diagnostics |
| 03/06/2013 | CN202768536U Oil cylinder hydraulic test bench |
| 03/06/2013 | CN102954064A System and method for detecting force motor transitional motion type three-way servo valve |
| 02/28/2013 | WO2013026209A1 Method, controller and device for detecting hydraulic valve in hydraulic circuit, method and device for detecting hydraulic circuit fault， and fault processing system for hydraulic circuit |
| 02/27/2013 | EP2561237A1 Device and method for determining the state of ageing of a hydraulic fluid of a hydraulic system of a vehicle |
| 02/27/2013 | CN102943790A Intelligent hydraulic cylinder system |
| 02/21/2013 | DE102011111043A1 Method for self-testing of pneumatic drive, involves receiving self-test control signal and detecting actual position of actuator by position controller, where position controller moves drive of predetermined test stroke |
| 02/20/2013 | CN102937125A Testing system of hydraulic motor |
| 02/20/2013 | CN102032242B Method for monitoring running state of hydraulic system on line based on electrical parameter information fusion |
| 02/13/2013 | CN202732548U One-way oil cylinder test bed |
| 02/13/2013 | CN102927085A Verification method for dynamic performance of load-sensitive variable pump |
| 02/13/2013 | CN102927084A Connecting method for closed central load sensing system structure |
| 02/13/2013 | CN101852220B Controllable high-pressure high-flow generating device and control method thereof |
| 02/06/2013 | CN202718969U Compression test device |
| 02/06/2013 | CN202718968U Emulation device for tests |
| 02/05/2013 | US8365894 Hydraulic system |
| 01/30/2013 | CN202707687U Proportional speed regulation experimental system for air motor |
| 01/30/2013 | CN102900730A Test experiment system for revolving speed and pressure property of hydraulic transformer |
| 01/30/2013 | CN102900729A Return oil collector for detecting hydraulic vibration control valve on line |
| 01/23/2013 | CN202690588U Linear measurement device for internal leakage of oil cylinder |
| 01/23/2013 | CN202690587U Internal leakage measurement device for long-stroke oil cylinder |
| 01/23/2013 | CN202690586U Experimental device for detecting hydraulic pump |
| 01/23/2013 | CN102889269A Pressure detection system for preloaded oil cylinders, super lift device and crane |
| 01/22/2013 | CA2692577C Method and apparatus for performing diagnostics in a control loop of a control valve |
| 01/17/2013 | WO2013009467A2 Hydraulic accumulator fluid charge estimation system and method |
| 01/16/2013 | CN202673872U Simulated well drilling hydraulic system |