Abstract: A wind-based power generation system including a base, a plurality of towers including a plurality of turbines, at least one pneumatic pump, at least one pneumatic motor, at least one pneumatic generator, an air storage chamber, and a tail component. The wind-based power generation system receives wind via the plurality of turbines and transmit the airflow to pneumatic pumps and motors to power a generator.

Abstract: A substrate polishing apparatus includes; a platen including an upper surface configured to perform a polishing process on a semiconductor substrate, a slurry supply configured to supply slurry to the upper surface of the platen, wherein the slurry includes aqueous solution and abrasive particles, a collection pipe disposed under the platen and configured to guide the slurry, wherein the collection pipe includes a vertical guide pipe and a lateral guide pipe, a collection device disposed on an outer surface of the collection pipe, wherein the collection device includes an alternating arrangement of magnetic separators configured to separate the abrasive particles from the slurry using an electromagnetic force and sonicators configured to decompose the abrasive particles, and a collection tank connected to the collection pipe and configured to store the abrasive particles separated from the slurry by the collection device.

Abstract: This hydraulic drive device supplies and drains a working fluid to and from a hydraulic cylinder and includes: a plurality of hydraulic pump motors including suction ports and discharge ports; a plurality of electric motors respectively connected to the plurality of hydraulic pump motors; and a directional control valve that is connected to a meter-out passage and connects the hydraulic cylinder to the meter-out passage to drain the working fluid from the hydraulic cylinder to the meter-out passage. The suction ports of the plurality of hydraulic pump motors are connected in parallel with the meter-out passage.

Abstract: Disclosed herein are components, systems, and methods for sealing and pressurizing fluids at eccentric temperatures. Embodiments of a high-pressure system include static seals, dynamic seals, or both. A fluid tight seal formed between abutting surfaces of stationary, adjacent components is movable, via rolling contact between the abutting surfaces, as a temperature of the adjacent components enters the eccentric temperature range. The materials of the adjacent components may be selected based on their thermal expansion and contraction characteristics, and respective geometries of components of the high-pressure system may be selected to maintain a minimal gap between moving, adjacent components of the high-pressure system.

Abstract: A piston for a compressor comprises a piston rod which defines a longitudinal axis, and a piston ring package with a carrier sleeve which extends along the longitudinal axis, is arranged on a circumferential surface of the piston rod and is releasably fastened to the piston rod, and a plurality of piston ring devices arranged next to one another along the longitudinal axis, which are arranged on an outer circumferential surface of the carrier sleeve and are fastened to the carrier sleeve, the carrier sleeve preferably having a mechanical interface for attaching a withdrawal tool for applying a force directed along the longitudinal axis.

Abstract: This work machine includes: a first hydraulic cylinder and a second hydraulic cylinder that telescope a telescopic boom on the basis of hydraulic oil supply and discharge, a switching valve that is disposed on a pressure relief circuit for connecting the first hydraulic cylinder and the second hydraulic cylinder to a tank, and a control unit that causes the switching valve to connect the first hydraulic cylinder to the tank and releases the pressure in the first hydraulic cylinder when contracting or extending the second hydraulic cylinder in a condition in which the first hydraulic cylinder is contracted.

Abstract: A method for manufacturing an electrode includes the steps of (a) laminating an active material layer on the surface of the current collector; and (b) removing a portion of the active material layer by irradiating a laser beam on the surface of the active material layer. Before irradiating the active material layer with a laser beam in step (b), a process of supplying moisture to the active material layer is performed. A system for manufacturing an electrode according to the above method is also provided.

Abstract: A patient handling apparatus includes a patient support surface, a base, and a hydraulic circuit. The hydraulic circuit includes a pump, a fluid reservoir, and a hydraulic cylinder operable to selectively raise or lower the patient support surface or the base. The hydraulic circuit controls flow of fluid between the cylinder and the fluid reservoir to thereby control the movement of the base or patient support surface. In addition, the hydraulic circuit may include a manual bypass circuit configured to bypass the pump in response to a manual input, which allows manual extension or retraction of the cylinder, for example, when the pump is not operational. The hydraulic circuit may also include a pump bypass circuit configured to bypass the pump to allow fluid to discharge from the cap end to the fluid reservoir for faster evacuation of fluid from the cylinder, thereby increasing retraction speed of the rod.

Abstract: An open-center valve device for operating machines includes: a first section and a second section, a high-pressure line configured in such a way as to be connected to a pump to supply an operating fluid flow rate to the sections, and a discharge line configured to be connected to an outlet of the operating fluid. Each of the sections includes a spool control element, configured in such a way as to send the fluid flow rate to the respective work ports. The valve device further includes one or more free flow segments, a series duct configured in such a way that, upon a movement from the neutral position of one of the control elements for operating one of the actuators, a return flow rate from a respective work port is supplied to a subsequent control element, progressively closing the respective free flow passage.

Abstract: A hydraulic system includes: a first bi-directional pump connected to a head-side chamber of a single-rod cylinder by a head-side line and connected to a rod-side chamber of the single-rod cylinder by a rod-side line; and a second bi-directional pump connected to the head-side line by a supply/discharge line, the second bi-directional pump being a variable displacement pump. The hydraulic system further includes a low-pressure selection valve connected to the head-side line by a first discharge line and connected to the rod-side line by a second discharge line, wherein the low-pressure selection valve allows the second discharge line or the first discharge line to communicate with a relief line on which a relief valve is located.

Abstract: An apparatus for mounting and demounting a tyre relative to a corresponding wheel rim, wherein the apparatus includes: a wheel-holder unit, configured to receive and lock the wheel at an operating position and to set it in rotation about an axis of rotation; a plurality of tools, configured to interact with the tyre to mount and/or demount the tyre; a hydraulic circuit comprising a pump; a plurality of hydraulic actuators, connected to the hydraulic circuit; the hydraulic circuit is configured to drive the actuators of the plurality of actuators synchronously.

Abstract: This invention is directed to an inflatable fibre reinforced bag having a flat and generally round shape in uninflated condition, comprising at least one interior elastomer layer, a fibre reinforcement structure and an outer elastomer layer, wherein a reinforcement structure consisting of continuously wound reinforcement fibers running from pole to pole substantially closes said poles.

Abstract: Problem: In a case where the hydraulic actuator A supplied with hydraulic oil only from the first hydraulic pump and the hydraulic actuator B supplied with hydraulic oil from the first and second hydraulic pumps are operated simultaneously, even if the required flow rate for the first hydraulic pump of the hydraulic actuators A and B exceeds the first hydraulic pump maximum discharge flow rate, the hydraulic actuators A and B can be driven at the operation speed corresponding to the operation amount of the operation means.

Abstract: A control system includes: an actuator piston having an end cap, the actuator piston being reversibly translatable; a supporting member coupled to the end cap, the supporting member being configured to couple the end cap to a sensor; and a retaining device configured to maintain the coupling between the end cap and the supporting member when the end cap fails.

Abstract: A mode selection valve assembly includes a first end having a housing and an operating end located within the housing and rotatable relative thereto on application of a rotary force by a user. The assembly also includes a conduit end fixed to rotate with the operating end. The conduit end is formed by a cylindrical wall defining a conduit therethrough and an opening formed through the wall in fluid communication with the conduit. The assembly also includes, a rotary spring secured in the housing and connected at a first end to the housing and at a second end to the operating end. The spring is configured to rotationally bias the operating end to a first rotational position relative to the housing such that the opening of the conduit end is at a first rotary position relative to the housing.

Abstract: The present disclosure proposes a system for storing energy. The system includes upper and lower reservoirs, a working fluid, and a conduit arranged to permit flow of the working fluid from the upper reservoir to the lower reservoir under gravity. The conduit has a turbine generator arranged to be driven by the flow of the working fluid to generate energy. A heat transfer device is arranged to transfer heat to and/or from the upper reservoir and/or lower reservoir.

Abstract: A method of operating a hydrostatically compensated compressed air energy storage system comprising to inhibit champagne effect conditions, can include charging the system; changing the system into a storage mode; and before a dissolved gas concentration in a layer of compensation liquid exceeds a champagne effect saturation threshold, operating the system in a dilution cycle mode that can include i) discharging at least a portion of the compressed air from the accumulator thereby drawing additional compensation liquid having a lower dissolved gas concentration than the liquid in the layer of compensation liquid into the accumulator, and ii) re-charging the system by conveying additional compressed air into the layer of compressed air in the accumulator thereby displacing a corresponding amount of compensation liquid from the layer of compensation liquid into a compensation liquid flow path and returning the system to the storage mode.

Abstract: A hydraulic system for a passenger restraint device includes a hydraulic pump and a hydraulic section. The hydraulic section includes a hydraulic accumulator, a valve arrangement and a hydraulic cylinder unit with a piston. The valve arrangement is connected to the hydraulic pump, the hydraulic accumulator and the hydraulic cylinder unit. The piston can be moved between an open position and a first closed position. The hydraulic pump can pressurize the hydraulic cylinder unit so that the piston moves from the first closed position to the open position. The hydraulic accumulator is configured so that the piston moves from the open position to the first closed position. The hydraulic cylinder unit can be pressurized in a first switching position of the valve arrangement with a first pressure stage and in a second switching position of the valve arrangement with a second pressure stage lower than the first pressure stage.

Abstract: A work machine includes: a traveling body; a rotating body rotatably mounted on the traveling body; an attachment attached to the rotating body; and a control part. In this work machine, the attachment has a hook for hoisting a load, and, when the load is positioned ahead of the hook in a rotating direction of the rotating body upon deceleration of rotation of the rotating body, the control part executes anti-swing control on the rotation of the rotating body such that the hook is positioned immediately above the load's center of gravity.

Abstract: The hydraulic power increaser system includes: a power source (in this case, an electric motor), a hydraulic pump, a relief valve for safety, hydraulic conductors, a liquid fluid reservoir, 4-way directional valves operated by servo motors, and a digital/analog control system in conjunction with inductive proximity sensors located at the ends of the cylinders or boosters. Two boosters or cylinders are configured in series in the same line, each with an internal plunger that moves and displaces the fluid contained in the cylinders or boosters linearly. Hydraulic actuators or motors perform the work by transforming the energy of the system. All these aforementioned elements constitute the main block, which acts as a power source for the next secondary block, which contains the same elements as the main block except for the power source (in this case, an electric motor).