| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 060469000 | Having means controlling or attenuating shock vibration, sticking or chattering | 16 |
| 20090139225 | HYDRAULIC INERTER MECHANISM - The invention provides a hydraulic inerter mechanism, including: a hydraulic cylinder; a hydraulic motor connected to the hydraulic cylinder, with an output shaft thereon for converting the motion of the hydraulic cylinder from rectilinear motion to rotary motion; and an inertia body disposed on the output shaft. In operation, an external force applied to the inerter mechanism causes displacement of the piston, thereby pushing working fluid inside the hydraulic cylinder to generate a pressure difference between an inlet and an outlet of a hydraulic motor. The differential pressure consequently drives the hydraulic motor to rotate, and then the output shaft further drives the inertia body to rotate, thereby attaining inerter characteristics. | 06-04-2009 |
| 20090249777 | TRANSMISSION DEVICE WITH AT LEAST ONE FORM-FIT SHIFTING ELEMENT BEING HYDRAULICALLY ACTUATED VIA A HYDRAULIC SYSTEM - A transmission device ( | 10-08-2009 |
| 20090260353 | HYDRAULIC POWER OUTPUT UNIT AND HYDRAULIC HYBRID DRIVE SYSTEM INCLUDING SAME - A hydraulic power output unit can be used in a hydraulic hybrid drive system for propelling a vehicle. The hydraulic power output unit includes a housing having an input shaft that extends within the housing and is adapted to be rotatably driven by a source of rotational power. A hydraulic pump is rotatably driven by the input driveshaft to pump hydraulic fluid. A vibration damper is provided within the housing for dampening vibrations in the input shaft. | 10-22-2009 |
| 20090288409 | VIBRATION-DECOUPLING DEVICE FOR HYDRAULICS - The invention concerns a vibration-decoupling device for a hydraulic circuit and in particular concerns a vibration-decoupling device for a hydraulic circuit used in an agricultural vehicle. The device has a fluid transfer element ( | 11-26-2009 |
| 20100018199 | Device for Reducing Hydraulic-Fluid Oscillation in a Hydraulic System - A device for reducing hydraulic-fluid oscillation in a hydraulic system, in particular in a hydraulic system of an aircraft, wherein the hydraulic system comprises a pump that is driven by a drive, which pump conveys a fluid to a hydraulic line by pressure pulsation. The device comprises an actuator, arranged in the hydraulic line for generating pressure pulsation that compensates for the pressure pulsation of the pump. | 01-28-2010 |
| 20100146959 | WORKING FLUID ACCUMULATION DEVICE - A reservoir device is provided, which prevents water from flooding in an accumulation tank and improves on-vehicle installation capability. The reservoir device | 06-17-2010 |
| 20100263365 | POWER DISTRIBUTION UNIT WITH A HYDROSTATIC AND MECHANICAL POWER BRANCH - A power distribution transmission unit ( | 10-21-2010 |
| 20110192157 | CYLINDER DEVICE - A cylinder device ( | 08-11-2011 |
| 20140245733 | IN-LINE PARALLEL STANDPIPE MANIFOLD - The present disclosure relates to an apparatus for attenuating fluid ripple in a fluid circuit. A standpipe manifold may include multiple standpipes coupled to a fluid conduit at a same axial location. The multiple standpipes may be configured to attenuate different frequencies of fluid pressure waves passing through the fluid conduit. | 09-04-2014 |
| 20140245734 | HYBRID EXCAVATOR HAVING A SYSTEM FOR REDUCING ACTUATOR SHOCK - Disclosed is a hybrid excavator which reduces the impact generated at the start of the operation of the boom cylinder, or the like, of a hybrid excavator. The hybrid excavator according to the present invention comprises: a hydraulic pump motor connected to an electric motor and operated in the forward or reverse direction; a hydraulic cylinder connected to the hydraulic pump motor and operated in an expanding manner; a first and second hydraulic valve installed in a first and second passage, respectively, between the hydraulic pump motor and the hydraulic cylinder, for blocking the first and second passages when switched by an external control signal; a third hydraulic valve installed in the connecting path connected to first and second dividing passages. | 09-04-2014 |
| 20150020517 | HIGH-PRESSURE HOSE VIBRATION SUPPRESSOR - A vibration suppressor is disclosed that is configured for use in a system having a hose under pulsating hydraulic pressure. The pulsating hydraulic pressure causes vibration of the hose at the pulsation frequency. The vibration suppressor is applied to the hose and is constructed to have a resonant frequency slightly below the pulsation frequency where the pulsating hydraulic pressure is at a peak level, due to, but not limited to, the existence of a resonance in the hydraulic system. | 01-22-2015 |
| 20150323051 | HYDROSTATIC TRANSMISSION WITH SPOOL VALVE DRIVEN MOTOR - A center section/motor sub-assembly for use in a hydrostatic transmission includes a center section having a pump running face for interfacing with a pump and a motor running face for interfacing with a motor, and a bore extending laterally through the center section from the motor running face. A spool valve is received in the bore and includes a fluid pathway for providing fluid communication between the pump running face and the motor running face. The sub-assembly further includes a motor having a rotor and a motor stator secured to the center section adjacent to the motor running face in a manner that permits rotation of the rotor. The center section is configured for the hydraulic separating forces of the motor to be reacted only into the center section. A hydrostatic transmission includes the sub-assembly enclosed by a housing, in combination with a pump and output shaft. | 11-12-2015 |
| 20150354606 | ACTUATOR UNIT - An actuator unit includes a rod side chamber and a piston side chamber defined in the cylinder by a piston; a tank; a direction control valve configured to allow a working fluid discharged from the pump to be supplied selectively to the rod side chamber and the piston side chamber; a first control passage the rod side chamber with the tank; a second control passage the piston side chamber with the tank; a first variable relief valve provided on the first control passage, the first variable relief valve being configured to be varied a valve opening pressure; a second variable relief valve provided on the second control passage, the second variable relief valve configured to be varied a valve opening pressure; and a center passage the tank with a interior of the cylinder. | 12-10-2015 |
| 20150375966 | Noise Abatement for Elevator Submersible Power Units - A hydraulic elevator system includes a tank and power unit configured with noise and/or vibration abatement features. In one aspect the tank may include an insulated and sealed lid. In another aspect tank-to-floor dampening pads may be used. In another aspect the tank may have an increased thickness and/or stiffening trays or panels may be installed on the tank. Still in yet other aspects the noise and/or vibration abatement features may be associated with the power unit. For instance, in one aspect of the present disclosure the power unit may mount to the tank using a plurality of isolators. In another aspect, silencers and/or an expansion tank may be used to alter the hydraulic fluid flow properties within the system. Still yet, in another aspect certain noise generating components of the power unit may be wrapped in a noise blanket having an air barrier within. | 12-31-2015 |
| 20150377350 | Transmission arrangement - A transmission arrangement includes a hydrostatic transmission in which a hydrostatic unit functioning as a pump is hydraulically connected to a hydrostatic unit functioning as a motor in order to transfer drive power. The arrangement is configured with structure for damping hydraulic pressure fluctuations. The structure is assigned to a hydraulic line connecting at least one of the hydrostatic units. | 12-31-2015 |
| 20160138246 | REGENERATIVE MACHINE COUPLING SYSTEM - A system includes a first machine having a first bail member and a first push bar, at first end. The first bail member includes a first hydraulic cylinder. A first hook and second push bar, at second end. The second push bar includes a second hydraulic cylinder in fluid communication with first hydraulic accumulator. The second machine having second bail member and first push bar, at first end. The second bail member includes third hydraulic cylinder in fluid communication with second hydraulic accumulator. A second hook and second push bar, at second end. The second push bar includes fourth hydraulic cylinder. The first hook coupled to second bail member and second push bar of first machine is in mechanical contact with first push bar of second machine. The impact energy generated at beginning of push operation and pull operation is stored in first hydraulic accumulator and second hydraulic accumulator respectively. | 05-19-2016 |
