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| Number | Title | Issue Date |
| 8109085 | Energy storage and generation systems and methods using coupled cylinder assemblies In various embodiments, pneumatic cylinder assemblies are coupled in series pneumatically, thereby reducing a range of force produced by or acting on the pneumatic cylinder assemblies during expansion or compression of a gas. ... | 02/07/2012 |
| 8037678 | Energy storage and generation systems and methods using coupled cylinder assemblies In various embodiments, pneumatic cylinder assemblies are coupled in series pneumatically, thereby reducing a range of force produced by or acting on the pneumatic cylinder assemblies during expansion or compression of a gas. ... | 10/18/2011 |
| 7980072 | Apparatus and method for energy recovery An apparatus for energy recovery is provided. The apparatus comprises a hydrostatic machine and at least one hydraulic storage component. The hydraulic storage component is connected to the hydrostatic machine via a working line. A valve device is provided for influ... | 07/19/2011 |
| 7975474 | Hydraulic system A hydraulic system including a pump for feeding hydraulic fluid from an inlet side to an outlet side. A pressure accumulator is disposed at the outlet side, and between the pump and the pressure accumulator a hydraulic control valve is disposed, which has at least t... | 07/12/2011 |
| 7908851 | Hydraulic energy storage with reinforced layer In one aspect of the present invention, a system for performing work has a hydraulic circuit adapted to store energy within a hose. The hose has an elastic inner layer pre-tensioned by a radial tensioning component disposed within the hose and at least one reinforci... | 03/22/2011 |
| 7866150 | Load sense boost device A vehicle is disclosed having a hydraulic system. The hydraulic system includes a pressure regulator that maintains the output pressure from a hydraulic pump above a predetermined minimum pressure. ... | 01/11/2011 |
| 7788915 | Hydraulic circuit A hydraulic circuit 100 having a simple structure can recover energy of fluid. Hydraulic circuit 100 comprises a boom cylinder 22, a hydraulic pump 31, a motion switchover valve 32, a hydraulic pressure regulation system 37 ... | 09/07/2010 |
| 7779629 | Pressure accumulating apparatus Rotational force from a driving device 11 is transmitted to an eccentric cam 32 through a rotating rod 31, and the eccentric cam 32 causes a piston 22 and a piston rod 25 to move up and down in a reciprocating manner by its ... | 08/24/2010 |
| 7779628 | Hydraulic drive system with exiting from pumping and motoring A hydraulic drive system for storing and releasing hydraulic fluid includes a high pressure storage device, a low pressure storage device, and a pump-motor operating at a range of pump-motor speeds for converting between hydraulic energy and mechanical energy. The p... | 08/24/2010 |
| 7677036 | Hydraulic energy storage with an internal element In one aspect of the present invention, a system for performing work having a hydraulic circuit comprising a length of hose a hydraulic fluid in the circuit in communication with the hose, a hydraulic actuator for doing the work, at least one compressible element di... | 03/16/2010 |
| 7600376 | Energy storage A system for performing work having a hydraulic circuit has a length of hose, a hydraulic fluid in the circuit in communication with the hose and with a hydraulic actuator for doing the work, and a mechanism for pressurizing the hydraulic circuit such that at least ... | 10/13/2009 |
| 7574859 | Monocylindrical hybrid two-cycle engine, compressor and pump, and method of operation The monocilindrical hybrid comprises a boosted by the reciprocating air compressor two-cycle engine and a hydraulic pump. The pump plunger fastened to engine piston and located coaxially with the compressor piston and pump rotor comprised stabilizer hydraulic motor ... | 08/18/2009 |
| 7526918 | Hydraulic energy storage with reinforced layer In one aspect of the present invention, a system for performing work has a hydraulic circuit adapted to store energy within a hose. The hose has an elastic inner layer pre-tensioned by a radial tensioning component disposed within the hose and at least one reinforci... | 05/05/2009 |
| 7441405 | Cylinder with internal pushrod A cylinder assembly is disclosed. The cylinder assembly may include a cylinder body having an internal cavity therein and a piston and rod assembly disposed for axial movement within the internal cavity of the cylinder body. The piston and rod assembly may have an a... | 10/28/2008 |
| 7434394 | Hydraulic drive device To permit using hold-side pressure oil in a first hydraulic cylinder for the acceleration of a second hydraulic cylinder upon performing a combined operation of the first and second hydraulic cylinders, a hydraulic drive system is provided with a main hydraulic pump... | 10/14/2008 |
| 7415822 | Load sense boost device A vehicle is disclosed having a hydraulic system. The hydraulic system includes a pressure regulator that maintains the output pressure from a hydraulic pump above a predetermined minimum pressure. ... | 08/26/2008 |
| 7398647 | Pneumatically operated fastener driving tool A fastener driving tool includes a frame defining therein an accumulator that accumulates compressed air, a cylinder, a piston movable between a top dead center and a bottom dead center, a main valve section having a main valve movable between a top dead center and ... | 07/15/2008 |
| 7383682 | Hydraulic control arrangement for a mobile equipment What is disclosed is a hydraulic control arrangement for a mobile equipment, such as for a backhoe loader or a wheel loader, wherein a working tool of the equipment is adapted to be actuated by means of a hydraulic cylinder whose pressure chambers may jointly be con... | 06/10/2008 |
| 7380391 | Agricultural mower maneuvering and lightening devices A mower including a hitching structure configured to be connected to a motor vehicle, a cutting mechanism, a maneuvering device configured to bring the cutting mechanism from a working position to a maneuvering position, and a lightening device configured to transfe... | 06/03/2008 |
| 7363887 | Dynamic mass transfer rapid response power conversion system The present invention features a rapid fire rapid response power conversion system comprising (a) a chamber having at least one fluid port configured to supply combustible fluid to the chamber, and an out-take port; (b) a compressor for supplying compressed combusti... | 04/29/2008 |
| 7337610 | Hydraulic arrangement A hydraulic arrangement is provided for a spring support system. The hydraulic circuit arrangement includes a hydraulic cylinder, a hydraulic tank, a hydraulic conveying device, a hydraulic accumulator, a first selector valve arranged between the hydraulic accumulat... | 03/04/2008 |
| 7337869 | Hydraulic hybrid vehicle with integrated hydraulic drive module and four-wheel-drive, and method of operation thereof A vehicle includes an integrated drive module coupled to an axle thereof. The module includes a hydraulic motor configured to provide motive power at an output shaft, and a differential for distributing the motive power to right and left portions of the axle. The hy... | 03/04/2008 |
| 7337041 | Feedback control methods and apparatus for electro-pneumatic control systems Methods and apparatus related to feedback control for electro-pneumatic control systems are disclosed. An example electro-pneumatic control system comprises an electro-pneumatic controller and a secondary pneumatic power stage coupled to the electro-pneumatic contro... | 02/26/2008 |
| 7331180 | Thermal conversion device and process An apparatus and method for converting a differential in thermal energy between a first thermal source having a thermal conducting fluid and a second thermal source having a thermal conducting fluid is provided. The apparatus emplys a first vessel and a second vesse... | 02/19/2008 |
| 7325397 | Device for continuously supplying compressed air from a portable container to a pneumatic tool by greatly reducing pressure of compressed air and then precisely adjusting same A two stage pressure regulating device is disclosed. The device is adapted to supply compressed air from a portable container having a pressure of about 150 kg/cm2 to a pneumatic tool by first greatly reducing pressure of compressed air in the container t... | 02/05/2008 |
| 7325398 | Closed circuit energy recovery system for a work implement A closed circuit hydraulic system includes a fluid reservoir, a hydraulic cylinder having a cylinder rod, a bidirectional variable displacement hydraulic pump that pumps fluid to either extend or retract the cylinder rod on demand, a flow control valve for relieving... | 02/05/2008 |
| 7315089 | Powertrain system comprising compressed air engine and method comprising same A powertrain system comprises a compressed air supply apparatus, a compressed air engine, a rotary power conversion apparatus and an electrical power conversion apparatus. The compressed air engine is configured for extracting energy from compressed air. The compres... | 01/01/2008 |
| 7302796 | Hydraulic brake booster An hydraulic brake booster for an automobile hydraulic system comprising of a boost cylinder, a boost piston and a boost chamber defined by a boost piston working in a bore in a body and being adapted to apply an output force to an output rod in response to a pressu... | 12/04/2007 |
| 7281374 | Hydraulic device for elevating/lowering chair A chair elevating/lowering hydraulic device includes at least a foot pump 3 which absorbs oil by an ascent of an operation lever 1, which discharges oil stored by a stepping-on of the operation lever, and which discharges stored oil by a stepping-on of... | 10/16/2007 |
| 7275475 | Apparatus driven by a pressurized medium A pressurized-medium-driven apparatus including an actuator articulately mounted a line segment and a connecting element. The line segment and the connecting element are connected so as to be mutually pivotable with respect to each other around a swing axis. The con... | 10/02/2007 |
| 7260952 | Fluid machine A fluid machine has a compressor device for compressing refrigerant of a refrigerating cycle for an automotive vehicle, an electric rotating device operating as an electric motor for generating a rotational driving force to drive the compressor device or operating a... | 08/28/2007 |
| 7251936 | Suspension device A suspension device is for at least one drive part (10) that is to be cushioned. The drive part can be connected to an accumulator device (12) by a first valve unit (28) and to a tank connection (46) by a second valve unit (34) to ... | 08/07/2007 |
| 7243592 | Draining of oil leak in a hydraulic cylinder A device for a single-acting hydraulic cylinder (1) designed to lift or pull a load upon the existence of an oil pressure on the rod-side of a cylinder piston (7), where the cylinder bottom (15) of the hydraulic cylinder (1) is provided w... | 07/17/2007 |
| 7243494 | Ride control circuit for a work machine A hydraulic circuit for raising and lowering a load arm on a work machine is adapted to provide a ride control function which will cushion shocks through the load arm as the machine traverses rough terrain. The circuit includes a hydraulic ram that moves the load ar... | 07/17/2007 |
| 7240486 | Electro-hydraulic system for fan driving and brake charging An electro-hydraulic system for a machine may include a brake charging system including at least one accumulator. A fan drive system may include a fan and a fan motor. A fluid source may be in communication with the brake charging system and the fan drive system. Th... | 07/10/2007 |
| 7237748 | Landing gear method and apparatus for braking and maneuvering Aircraft landing gear comprised of a wheel hub motor/generator disks stack, includes alternating rotor and stator disks mounted with respect to the wheel support and wheel. The wheel hub motor/generator can provide motive force to the wheel when electrical power is ... | 07/03/2007 |
| 7231763 | Hydraulic apparatus A hydraulic system 10 of the present invention has a hydraulic pump driven by a driving source 14, a hydraulic pump motor 52 driven by an operating oil discharged from the hydraulic pump and flowing in an oil path 50, an inertial body ... | 06/19/2007 |
| 7231981 | Inline compensator for a floating drill rig An apparatus and method for protecting against the problems associated with heave of a floating drilling rig are disclosed. The disclosed invention is a unique inline compensator in which a plurality of cylinders housed within a tubular housing and a plurality of lo... | 06/19/2007 |
| 7231998 | Operating a vehicle with braking energy recovery A vehicle engine has a system of valves that permits various engine cylinders to operate in different modes of operation. During braking, some of the engine cylinders receive atmospheric air, compress it, and transfer it to an intermediate air-container. Other cylin... | 06/19/2007 |
| 7226018 | Landing gear method and apparatus for braking and maneuvering Aircraft landing gear comprised of a wheel hub motor/generator disks stack, includes alternating rotor and stator disks mounted with respect to the wheel support and wheel. The invention can provide motive force to the wheel when electrical power is applied, e.g. pr... | 06/05/2007 |
