Abstract: A control device includes a housing having a base portion and an extension portion. The base portion of the housing has an inward facing side and an outward facing side. The control device includes a lever coupled to and pivotable relative to the housing, and a master cylinder portion supported by the housing. The master cylinder portion has a hollow fluid cylinder. The control device also includes a piston assembly supported by the housing. The piston assembly is movable relative to the master cylinder portion. At least part of the piston assembly is disposed within the master cylinder portion. The master cylinder portion is angled relative to the outward facing side of the base portion of the housing, such that the first end of the fluid cylinder is closer to the outward facing side than the second end of the fluid cylinder is relative to the outward facing side.

Abstract: A system in a water body uses buoyant force of gaseous Hydrogen and Oxygen to generate electrical power with one or more turbines that includes power resulting from the buoyant force while transporting the Hydrogen or Oxygen to a higher elevation, without loss of electrons, for conversion to electricity at the higher elevation. Conversion of Hydrogen and Oxygen to water through a Hydrogen Fuel Cell or by burning at the higher elevation may generate additional steam power, hydropower, or purified water. Portable submersible modules may transport the system below or above the water to and from the base of a plumbing portion of the system. The amount of gaseous fuel energy available at the higher elevation is not detrimentally impacted by the generation of electricity by the turbine.

Abstract: An electrical energy generating device (1) to transform kinetic energy of fluid passing through a pipe into electrical energy, the device may include a flow management unit (2) having a first housing (20) enclosing a plurality of tubes and a first gasket (27); a generating unit (3) having a second housing (30) with a plurality of coils (37) embedded within the second housing (30), a rotor rotatable within the second housing (30); and a connector (4) connecting the flow management unit (2) to the generating unit (3).

Abstract: A work machine includes directional control valves 43 and 44 each controlling a direction and a flow rate of a pressurized fluid supplied to each a boom cylinder 32 and a bucket cylinder 36; operation amount sensors 51a, 52a, and 52b detecting operation amounts of operation devices 51 and 52; a variable flow control valve 45 that can restrict the flow rate of the pressurized fluid in a meter-in passage of the directional control valve 44 related to the bucket cylinder 36; and a controller 60 controlling the variable flow control valve on the basis of the detection results by the operation amounts from the operation amount sensors, and the controller changes over an action mode to any one of a normal mode for restricting the flow rate of the pressurized fluid by the variable flow control valve and a responsiveness priority mode for not restricting the flow rate of the pressurized fluid by the variable flow control valve in response to the detection results of the operation amounts of the plurality of operation

Abstract: A hydroelectric power plant includes an upper water basin, a lower water basin, a waterway connecting the upper water basin to the lower water basin, a hydraulic machine disposed in the waterway, an inlet valve disposed in a pressure pipeline, and an electric drive for actuating the inlet device. The electric drive is configured in such a way that it ensures reliable closing of the inlet valve even in the event of a power failure, without an emergency power supply being provided therefor.

Abstract: The present invention is provided with: a manipulation unit; a winch device that operates with an actuation mode of either a high speed mode or a low speed mode, and winds in or reels out a wire rope; a selection unit for an operator to select either the high speed mode or the low speed mode; a load calculation unit calculating a suspended load; a tension calculation unit calculating the tension of the wire rope; and a control unit controlling the actuation of the winch device. If the mode selected by the selection unit is the high speed mode, the manipulation unit is manipulated from a neutral state to a non-neutral state, and the suspended load is smaller than a load threshold and the tension is smaller than a tension threshold, the control unit controls the winch device so as to operate in the high speed mode.

Abstract: A hydroelectric generation device has a main channel, at least one branch channel, at least one storage unit, and at least one generator set. The at least one storage unit is mounted in the at least one branch channel, and each storage unit has a container. The at least one generator set is mounted respectively in the at least one storage unit, and each generator set has a generating tube, at least one connection pipe, and a generating unit. The generating tube is mounted in the container. The at least one connection pipe is connected with the generating tube and is bent into an inverted L shape. The generating unit has at least one blade wheel assembly mounted rotatably in the generating tube.

Abstract: A power generating system based solely on gravity includes a housing with water in a main chamber. A convertible piston interacts with the water to move to displace the water in a cycle. The displaced water is directed into and through power generating units, with the outputted water from one power generating unit continued towards and through a subsequent power generating unit as the water moves back towards the main chamber of the housing. The water is then able to interact again with the convertible piston to again be displaced through the power generation cycle. At least two separate power generating systems are integrated for uninterrupted power supply for 24 hrs per day, 7 day per week and 365 days per year. This cycle continues (not in the concept of perpetual motion), as needed, to create energy that can be used on-demand or otherwise stored for future use.

Abstract: A stability mechanism that can reduce deformation of a frame of a compressor. The stability mechanism can have a support member with an x-shaped configuration having a pair of peripheral members and diagonal components disposed therebetween. In use, the support member can work in combination with elongated “tie bars” to prevent deformation of the frame that may result from installation and/or use of the compressor.

Abstract: A device for use in extracting energy from an incoming fluid flow is presented.

Abstract: The invention relates to an active pressure intensifier which comprises an axial piston pump having a housing in which a drum which is driven via a drive shaft for rotation and has at least two piston chambers is disposed, the piston chambers respectively having a liquid inlet and a liquid outlet and, in the piston chambers respectively, a piston with at least one piston rod being disposed. Likewise, a reverse osmosis plant which has this active pressure intensifier is provided according to the invention. Likewise, a method for changing the concentration of dissolved components in liquid solutions by means of reverse osmosis is provided according to the invention. The subject according to the invention is used in particular in sea- and brackish water desalination, in waste water treatment, in the foodstuff industry, in the chemical industry and in mining.

Abstract: A vehicle brake hydraulic control apparatus includes a reservoir, a hydraulic pressure pump, an orifice, a damper and a one-way valve. The reservoir absorbs an excess brake hydraulic pressure of a wheel brake. The hydraulic pressure pump suctions brake fluid absorbed by the reservoir and returns the suctioned brake fluid to a master cylinder through a return line. The orifice is provided in the return line. The damper is connected to the return line between the orifice and the hydraulic pressure pump and damps discharge pressure pulsation of the hydraulic pressure pump. The one-way valve is provided in the return line between the damper and the orifice and prevents a hydraulic flow from an orifice side to a damper side.

Abstract: A bending support having a planar bracing member with a length (L) that is substantially equal to that of the inner diameter (I.D.) of the manifold header that the bending support is ultimately inserted in. Extending perpendicularly from a surface of the bracing member is a pair of bracketing members. The pair of bracketing member and the portion of the planar bracing member therebetween defines a refrigerant conduit clip. The interior surface of the refrigerant conduit clip includes a skived pattern defining a plurality of teeth or protrusions that aids in the attachment of the refrigerant conduit clip onto an internal refrigerant conduit. An aperture located on the planar bracing member between the pair of bracketing member provides an unobstructed path for refrigerant flow to the refrigerant conduit.

Abstract: A traction-type actuator includes a frame, a first actuating unit, a second actuating unit, a rotatable member and a traction member. The rotatable member is disposed on the frame. The first actuating unit and the second actuating unit are located at two sides of the rotatable member. The traction member has a strip shape and can be curved and wound. The traction member has two ends fixed to the frame and is in a tightened state. The traction member winds through the first actuating unit, and then winds on the rotatable member, and finally winds through the second actuating unit. When the first actuating unit is actuated, the second actuating unit will be towed, vice versa, the first actuating unit and the second actuating unit are push-pull by the traction member so that the rotatable member is turned clockwise and counterclockwise.

Abstract: A transient liquid pressure power generation system and associated devices and methods are disclosed. The system can include a liquid source and a transient pressure drive device fluidly coupled to the liquid source to receive liquid from the liquid source. The transient pressure drive device can include a drive component, and a valve to cause a high pressure transient wave in the liquid traveling toward the liquid source to operate the drive component. The system can also include a liquid velocity continuation component downstream of the transient pressure drive device and a bypass conduit fluidly coupled to the liquid source and the liquid velocity continuation component. Additionally, the system can include a heat source fluidly coupled to the transient pressure drive device and the liquid source to receive liquid from the transient pressure drive device and heat liquid returning to the liquid source.

Abstract: An apparatus for delivering limestone dust to the outlet of a unique dust discharge structure of a dust hopper (tank) particularly useful in dusting underground coal mine shafts wherein an air blower for pressurizing a dust/air mixture in the discharge structure is powered by a lagged roller engaged and rotatably driven by a conveyor belt and wherein the roller has ceramic tiles partially imbedded in its lagged surface.

Abstract: A hydraulic system for a machine is disclosed. The hydraulic system may include a fluid tank, a first manifold, a valve body, a second manifold, and a plurality of conduits. The first manifold may be operatively attached to the fluid tank and have at least two inlets and at least one outlet in fluid communication with the fluid tank. The number of the at least one outlet may be less than the number of the at least two inlets. The second manifold may be operatively attached to the valve body and have at least one inlet in fluid communication with the valve body and at least two outlets. The number of the at least one inlet may be less than the number of the at least two outlets. The plurality of conduits may fluidly connect the at least two inlets of the first manifold and the at least two outlets of the second manifold.

Abstract: A hydraulic power unit comprising a rear face and a front face spaced from one another includes an air inlet configured to receive air into the unit, and an air outlet configured to expel the air received into the unit. The hydraulic power unit further includes controls configured to provide a user interface. The controls and the air inlet are located on the front face, and the air outlet is located on the rear face. A coupler for a hydraulic power unit, configured to couple a drive shaft of the unit to a pump shaft of a hydraulic pump, includes a first aperture configured to receive the drive shaft, a second aperture configured to receive the pump shaft, and a hub configured to be received in a fan. The hub is configured to fixedly couple to the fan so that the fan is driven by the drive shaft.

Abstract: A ocean buoyancy power generating system includes a water inlet pipe with a water inlet, a water drawing pipe, a guiding pipe, multiple water drawing devices, a gas charging unit, an ocean power generating and collecting apparatus or ocean thermal energy conversion (OTEC) power generating and collecting apparatus, a first moving apparatus, and a second moving apparatus. Through cyclically discharging the gas to one of the water drawing devices in the water inlet pipe by the gas charging unit, buoyancy is generated on the water drawing device to continuously drive the seawater in the water drawing pipe to move upwards for electric power generation.

Abstract: A hydraulic assembly including a pivot connection defining a pivot axis, a hydraulic element linked to the pivot connection, and a connector for connecting a hydraulic conduit to the hydraulic element. The connector defines a connection axis and the connector is configured such that the connection axis approximately intersects the pivot axis. The hydraulic assembly may be used in various applications, including in forestry equipment, for example, with a rotator link assembly.

Abstract: A power generation apparatus, a power generation method, a decomposition-gas boiler, and a decomposition-gas turbine with which nitrous oxide may be used as an environmentally friendly energy source. A fuel gas including nitrous oxide (N2O) is supplied to a decomposition reactor (22) in which a catalyst (21) for decomposing nitrous oxide is disposed. Steam is generated by a decomposition-gas boiler by heat recovery from decomposition gas (N2, O2) generated by decomposing the nitrous oxide, the steam generated by the decomposition-gas boiler is used to drive the rotation of a steam turbine to obtain motive power, and the motive power is subsequently used to drive a generator to obtain electrical power. Alternatively, the decomposition gas (N2, O2) generated by decomposing the nitrous oxide is used to drive the rotation of a decomposition-gas turbine to obtain motive power.

Abstract: A hydrostatic transmission includes a hydraulic pump, a top housing that houses the hydraulic pump, and a hydraulic motor. An endblock sub-assembly has a pump running face for interfacing with the hydraulic pump, and a motor connection portion for interfacing with a hydraulic motor. The enblock sub-assembly forms a porting manifold for communicating hydraulic fluid from the hydraulic pump to the hydraulic motor. The hydraulic motor includes an internal rotor set, and the hydraulic motor is secured to the endblock sub-assembly in a manner that permits rotation of the rotor set. The top housing is fixed to the endblock sub-assembly such that the housing and endblock sub-assembly form a reservoir for the hydraulic fluid. The motor connection portion of the endblock sub-assembly supports the hydraulic motor externally to the top housing. The hydrostatic transmission is suitable for incorporation into various light vehicle categories, including zero-turn radius vehicles.

Abstract: The invention relates to a hydraulic hybrid drive system (1) for a motor vehicle, comprising driven wheels (2), which have friction brakes (3) for applying a friction braking torque to the driven wheels (2), and a continuously adjustable hydraulic transmission (4), which has a motor-side hydraulic machine (5) and a wheel-side hydraulic machine (6) having a direct fluid connection to the motor-side hydraulic machine, wherein the hydraulic machines (5, 6) are connected in series and to the driven wheels (2) of the motor vehicle in regard to driving, such that the hydraulic machines (5, 6) can be operated both as hydraulic pumps and as hydraulic motors, and at least one hydraulic fluid energy storage device (7), which is connected to the hydraulic transmission (4) in regard to fluid flow, wherein the motor-side hydraulic machine (5) is connected to the wheel-side hydraulic machine (6) in regard to fluid flow by means of a high-pressure hydraulic line (8) and a low-pressure hydraulic line (9).

Abstract: A regeneration circuit includes an oil collection passage that collects return oil from a hydraulic motor to which pressure oil discharged from a hydraulic pump is supplied, a regeneration system that recovers energy from the collected return oil, and an oil resupply passage that resupplies pressure oil from the regeneration system to the hydraulic motor. The regeneration system includes a pressure oil inflow part that converts pressure energy of the collected return oil into mechanical energy, a pressure oil outflow part that outputs low pressure oil with a pressure lower than a pressure of the collected return oil to the oil resupply passage when the pressure energy of the collected return oil is converted into the mechanical energy, and a regeneration part that accumulates the mechanical energy.

Abstract: An impact energy conversion device, designed particularly for a car bumper comprises cylinders and at least one confusor (4), where each confusor (4) is, at its inlet, connected to the main hydraulic cylinder (6) fitted inside with the bearing of the main piston rod (7), which receives the impulse of the impact, and at its outlet is, via a non-return valve (3), connected to a hydropneumatic cylinder (8, 10), its hydraulic section (8) separated from the pneumatic section (10) with a separator, which preferably serves as the piston rod (9) between the hydraulic section and the pneumatic section and cooperates with the agent flowing through the confusor (4). The confusor (4), the main hydraulic cylinder (6), and the hydropneumatic cylinder (8,10) are arranged coaxially, or at an angle, preferably the right angle.

Abstract: An electric power accumulating means (30) includes a DC bus connected to an electric power accumulator (19) and supplies a direct current, a smoothing capacitor provided to the DC bus, and a voltage detector (23) that detects a voltage of the DC bus. The generator (12) generates an induced voltage E by being rotationally driven by an engine (11) when starting the engine (11). Degaussing of a permanent magnet of the generator is determined by performing a comparison between the induced voltage E detected by the voltage detector (23) and a previously set reference induced voltage RE.

Abstract: A percussion mechanism includes a first shaft and a second shaft. One or more vanes are fastened to the first shaft. The vanes are arranged so as to be rotatable in a chamber of the second shaft. The chamber is filled with a magnetorheological fluid. A magnetic field source on the second shaft generates a magnetic field that is spatially modulated in the circumferential direction inside the chamber.

Abstract: A hydraulic system and method of controlling hydraulic pressure are disclosed. The hydraulic system includes a pump fluidly coupled to a reservoir that contains hydraulic fluid, a control valve fluidly coupled to the pump, the control valve being selectively movable between at least two positions, a relief valve fluidly coupled to the pump via a relief conduit, the relief valve operable to flow hydraulic fluid from an outlet of the pump to the reservoir, and a variable pressure setpoint module fluidly coupled to the relief valve and the control valve. The variable pressure setpoint module being operable to open the relief valve in response to at least two pressure setpoints depending on a position of the control valve.

Abstract: A hydraulic cylinder is provided. The hydraulic cylinder includes a casing with a longitudinal axis defined therethrough, a first fluid inlet defined in the casing, a second fluid inlet defined in the casing, a first fluid outlet defined in the casing, a second fluid outlet defined in the casing, a shaft extending along the longitudinal axis, a first switching valve mounted to the shaft, a second switching valve mounted to the shaft, and a piston mounted to the shaft between the first switching valve and the second switching valve, wherein the hydraulic cylinder is configured such that when a fluid is supplied to the first and second fluid inlets, the shaft, the first and second switching valves, and the piston oscillate back and forth along the longitudinal axis.

Abstract: An actuator that includes an enclosure having a wall impermeable to a first solute and permeable to a solvent and containing, at least temporarily, a catalyst capable of promoting the transformation of at least one second solute into the first solute to vary the osmotic pressure in the enclosure; and a deformable chamber connected to the enclosure, the chamber being capable of increasing in volume under the action of the solvent moving from the enclosure into the chamber by osmosis or the enclosure being designed to be arranged in contact with the solvent, the chamber being capable of increasing in volume under the action of the solvent penetrating into the enclosure by osmosis.

Abstract: Various embodiments related to hydraulic actuators and active suspension systems as well as their methods of use are described.

Abstract: An adaptive, low-impact vehicle energy harvester system, and a method of harvesting vehicle energy, is provided. The system includes a plurality of channels disposed longitudinally in a trafficway, wherein each of the plurality of channels includes one or more compressible, elongated hollow bodies such that a movement of a vehicle along the trafficway causes contents in the elongated hollow bodies to be expelled from one end, a motor in communication with the hollow bodies such that the contents expelled from one end of the hollow bodies actuate the motor, and a control unit that varies a resistance to the movement of the contents in the elongated hollow bodies based on at least one of a mass of the vehicle, a velocity of the vehicle, and a rate of change of velocity of the vehicle.

Abstract: The systems, methods and apparatuses described herein provide a footwear hydraulic system for harvesting power generated by pressing a foot on a surface and providing a cushion for the impact. In certain aspects, a hydraulic system for a footwear may comprise at least one chamber with a first and second compartments separated by an elastic membrane. The first compartment may be filled with gas and the second compartment may be filled with liquid. The gas may provide impact cushion and transient energy storage, and the liquid may pressured to push a generator to produce energy. The pressure may be generated by pressing the footwear on a surface and/or the elastic membrane of the chamber trying to restore its shape.

Abstract: System and method for starting a turbine engine are disclosed. These systems and methods for starting a turbine engine may be located on a vehicle, such as such as a Class 8 vehicle, equipped with a turbine engine as the prime mover or as a generator in a hybrid powertrain. In that regard, a fluid forcing device may be employed to start the turbine engine, such as an electric pump/compressor. The fluid forcing device may already be located on the vehicle for other purposes, and can include an electrically powered steering pump (also referred to as an electric pump) or an electrically powered air brake compressor (also referred to as an electric compressor). In order to start the turbine engine, the output of the electric pump/compressor drives an associated fluid circuit, which in turn, supplies fluid over a portion of the turbine shaft, wheel or scroll in order to impart rotational motion thereto. The rotational motion imparted to the turbine shaft, wheel or scroll aims to start the turbine engine.

Abstract: A hydro electric energy generation structure is disclosed. The structure comprises: a gravity wall forming a closed outer perimeter extending above an upper water level of an existing hydraulic reservoir, and extending below the reservoir floor; at least one water inlet hydraulically connecting a first penstock to a first turbine generator below the water inlet. The structure further comprises: at least one lower water storage reservoir within the perimeter of the gravity wall receiving water from the first turbine generator; at least one pump receiving water from the lower water storage reservoir and pumping it through a pump delivery conduit to at least one upper water storage reservoir above the gravity wall; at least one second penstock delivering water from the upper water storage reservoir to a second turbine generator below; and a tailrace for returning the water into the existing reservoir.

Abstract: A snowmobile has a snowmobile body and an arm assembly pivotally coupled to the snowmobile body. The arm assembly is configured to pivot on an axis through the snowmobile body. A first hydraulic actuator has a first end coupled to the snowmobile body and a second end coupled to the arm assembly. A hydraulic system is coupled to the first hydraulic actuator. The hydraulic system includes a hydraulic pump in fluid communication with the first hydraulic actuator. A hydraulic valve is coupled between the hydraulic pump and first hydraulic actuator. An axle is disposed through the first end of the first hydraulic actuator. The axle includes a hydraulic pathway through the axle coupled between the hydraulic system and first hydraulic actuator. The hydraulic system is configured to operate the first hydraulic actuator. A second hydraulic actuator is coupled to the first hydraulic actuator.

Abstract: A system includes a pilot pump with an output that may be directed to a pilot circuit by way of a selector valve. The selector valve is shifted between a first position providing communication between the pump and the pilot circuit to a second position providing communication between the pilot pump and the hybrid circuit when pressure in the pilot circuit reaches a predetermined level. That pressure is used to hydraulically shift the selector valve to redirect flow from the pilot pump to the hybrid circuit. Both the pilot circuit and the hybrid circuit include accumulators for storing pressurized hydraulic fluid. The fluid stored in the pilot circuit is used for pilot functionality while the fluid stored in the hybrid circuit is used to power any one or more of a variety of power consuming components.

Abstract: The combined pump and energy recovery turbine includes at least one fluid flow pressurizing a sliding vane pump and a sliding vane energy recovery turbine that recovers energy from a second fluid flow, such as the brine discharge from an RO seawater desalination system. A cylindrical rotor has two sliding vanes in respective slots, the rotor being concentrically disposed within an oval-shaped enclosure defining two mirror image crescent-shaped chambers, each chamber having inlet and outlet passageways. The first chamber pressurizes the first fluid flow, and the second chamber functions as a second outflow-driven energy recovery turbine, thus enabling the single rotor device to operate as a pressurizing pump on the first fluid flow, and second outflow-driven energy recovery turbine recovering energy from the pressure drop in the second fluid flow.

Abstract: Graphene materials having encapsulated gas cells and methods to make and use same. Alternative electrically conductive and atomically thin materials (such as graphene oxide) can be used alternatively or in addition to the graphene in the graphene encapsulated micro-bubble materials.

Abstract: A system and method for the controlled lowering and lifting of a load are disclosed. The system and method may include operating a work machine having a hydraulic system including a hydraulic actuator for supporting a load, a first control valve in fluid communication with the actuator, and a controller for operating the first control valve. In one embodiment, the controller includes a first algorithm for operating the first control valve in a load lowering operation. When an operational fault within the hydraulic system is detected, the controller can be configured to enter into a safe lowering mode. In the safe lowering mode, the first algorithm is disabled and a pulse width modulation (PWM) current is sent from the controller to the first control valve. A user interface is provided to allow an operator to control the PWM current duty ratio to allow the load supported by the actuator to be lowered.

Abstract: A hydraulic control, for example of a hydraulically operable working tool, includes a hydroconsumer that can be acted upon against a permanent force via a pressure source, and a switching valve with working power/pressure control function reacting against a spring force depending on a pressure and/or through flow volume. The switching valve connects the hydroconsumer with a tank for a return stroke of the hydroconsumer when the pressure source is switched off. The hydroconsumer can be hydraulically stopped with the return stroke via the pressure source by a pressure pulse and/or through flow volume pulse. In a hydraulically operable working tool, the hydroconsumer can be hydraulically stopped in the return stroke even before a predetermined end position is reached by switching on the pressure source.

Abstract: A gerotor pump (1) comprising; a housing (2) which comprises a first and a second supply socket (18a, 18b; 19a, 19b), an inner rotor (4); and an outer rotor (5) rotatably located relative the housing (2); wherein the inner rotor (4) is located within the outer rotor (5), and lobes (13, 4) of the inner and the outer rotor (4, 5) engaging, the inner rotor (4) is centred around an axis (15b) which is eccentric from an axis of rotation (15) of said outer rotor (5), wherein a pressure chamber (7) with a high pressure and a low pressure section, is defined between the inner and outer rotor (4,), characterised in, that the inner rotor (4) is rotatably arranged on a shaft cylinder (10b) which is fixed at one end of a central drive shaft (10) of the pump (1) and is centred about said rotational axis (15b), whereby said inner rotor (4) wanders in said outer rotor (5) when said central drive shaft (10) is turned, and wherein the inner rotor (4) is provided with radial supply conduits (9) extending from the pressure cham

Abstract: A hybrid electric drive system including a hydraulic power system for a hybrid powered vehicle which includes a transmission, and a combustion engine and an electric motor both mechanically coupled to the transmission to provide engine and/or motor drive power for the vehicle. A plurality of hydraulic circuits communicate with an electrically driven hydraulic pump. The hydraulic pump is configured to provide fluid circulation to the plurality of hydraulic circuits. The hydraulic circuits are each connected to the transmission and other corresponding vehicle components. An electrical power supply is configured to power the electrically driven hydraulic pump, and the electrical power supply is electrically communicating with a rechargeable high voltage (HV) battery system. The electrically driven hydraulic pump communicates with the plurality of hydraulic circuits to provide fluid pressure in the hydraulic circuits.

Abstract: A hydraulic system is disclosed. The hydraulic system may have a pump configured to draw low-pressure fluid from one of a first passage and a second passage and discharge fluid into the other of the first and second passages, and an actuator coupled to the pump via the first and second passages. The hydraulic system may also have at least a first control valve fluidly connected between the first and second passages to selectively direct fluid from one of the first and second passages to bypass the pump and flow into the other of the first and second passages. The hydraulic system may further have at least a second control valve fluidly connected in parallel with the at least a first control valve to selectively direct fluid from one of the first and second passages to bypass the actuator and flow into the other of the first and second passages.

Abstract: A regeneration valve for a hydraulic circuit may include a valve element for controlling flow between first, second, and third ports. The valve element may be formed with a flow slot that generates a slot flow force when hydraulic fluid flows therethrough. The flow slot may be configured so that a predetermined fluid low rate may generate a slot flow force sufficient to actuate the valve element from a first position to a second position. In the second position, the valve element may divert a portion of flow from the second port to the first port is diverted to the third port. The flow slot may be configured so that the fluid exits the slot at an exit angle that varies as the valve element moves between first and second positions, thereby to provide a more uniform flow force across the range of travel of the valve element.

Abstract: The present disclosure refers to a hydrostatic drive system for a vehicle (10), which may comprises an open circuit a closed circuit (120), and a combiner valve (118). The open circuit (100) may include a main hydraulic pump (102) configured to be driven by an internal combustion engine (12), and configured to drive at least one hydraulic consumer (34, 44, 50). The closed circuit (120) may include an auxiliary hydraulic pump (170) configured to travel the vehicle (10), and an hydraulic motor (146) connected to the auxiliary hydraulic pump (170). A pressure-relief valve (164) is sized and configured to drain the hydraulic fluid circulating within the closed circuit (120) and exceeding the maximum capacity of the auxiliary pump (170) to a reservoir (300) even if hydraulic fluid is diverted from the open circuit (100) into the closed circuit (120). The combiner valve (118) is connected to both the open circuit (100) and the closed circuit (120).

Abstract: The present invention relates to a downhole tool extending in a longitudinal direction, comprising a tool housing, an arm assembly movable between a retracted position and a projecting position in relation to the tool housing, the arm assembly comprising an arm member connected with the tool housing in one end, an arm activation assembly arranged in the tool housing for moving the arm assembly between the retracted position and the projecting position, a pump for circulating hydraulic fluid, wherein the arm assembly comprises a hydraulic mechanism arranged in connection with the arm member, and a fluid influx channel provided in the arm member, the fluid influx channel being in fluid communication with the hydraulic mechanism for supplying hydraulic fluid from the pump to the hydraulic mechanism. Furthermore, the invention relates to a tool string system comprising a plurality of downhole tools, wherein at least one of the downhole tools is a downhole tool according to the invention.

Abstract: A work machine includes a fluid circuit for use with an attachment configured to operate using one of a uni-directional flow and a bi-directional flow through the attachment. An operator-enabled mode selection switch operably connects to a controller. An electrical circuit includes the operator-enabled mode selection switch and a second operator-enabled switch. A first control valve is in fluid communication with the attachment. In response to the mode selection switch being operator-actuated to a bi-directional mode setting, the first control valve via the controller is actuatable to one of the bi-directional positions, electrical power being unavailable to the second operator-enabled switch of the electrical circuit.

Abstract: A system includes a slurry depressurizing system that includes a liquid expansion system configured to continuously receive a slurry at a first pressure and continuously discharge the slurry at a second pressure. For example, the slurry depressurizing system may include an expansion turbine to expand the slurry from the first pressure to the second pressure.

Abstract: Described herein is a device, process, and system for the transformation of kinetic energy from one form to a more appropriately useful form. The single inventive concept utilizes compressed fluid and has the ability to transform energy from traffic including motorized traffic, from wave or ocean power on or within the ocean, from any animate object which may activate it. Energy may also be harvested from machines in motion. Numerous uses including industrial, recreational or around the home may be made of this invention. The essential components involve an actuator which activates a radial outflow reaction turbine, where the turbine may also have internal compressed storage utilised in causing rotation of said turbine.