Class / Patent application number | Description | Number of patent applications / Date published |
060369000 | Cyclically operable reciprocating or oscillating motor or output stroke device | 28 |
20080302096 | Drive Assembly for a Reciprocating Pump Utilizing a Linear Actuator - A drive assembly for a reciprocating pump includes a support structure with a linear actuator mounted on the support structure. The linear actuator has a stationary portion and a movable ram portion. At least one direction altering cable guide is mounted to the movable ram portion of the linear actuator. At least one cable is provided having a first end and a second end. The first end is anchored to one of the support structure or the stationary portion of the linear actuator. The second end is adapted for attachment to a polish rod of a reciprocating pump. As the movable ram portion moves, the cable and cable guide configuration provide a mechanical advantage which results in the polish rod reciprocally moving a multiple of the distance traveled by the movable ram portion of the linear actuator. | 12-11-2008 |
20090031718 | Toroidal Ram Actuator - A toroidal ram actuator comprising a part toroidal shaped cylinder mounted to a first member and a part toroidal piston reciprocally movable within the cylinder, a free end of the piston being mounted to a second member, wherein the first and second members are pivotally attached along an axis and the relative movement between the cylinder and piston produces rotary motion of the first or second member about the axis. | 02-05-2009 |
20090100829 | Hydraulic catapult drive - The invention relates to a catapult drive for an object to be accelerated, preferably the car of a fairground ride, wherein the object is accelerated by means of a driving element. The movement of the driving element is produced by a flexible drive and a hydraulic cylinder via which all movements of the driving element can be controlled. The invention also relates to a control system for suitably controlling the inventive catapult drive. | 04-23-2009 |
20100089047 | ACTUATOR, UNCLAMP APPARATUS HAVING ACTUATOR, AND MACHINING APPARATUS - An actuator includes a power source, a cam member driven by power from the power source, a following member moving in connection with a motion of the cam member, an accommodation chamber accommodating an actuating medium, and a punch cylinder outputting the power transmitted to the actuating medium by the following member. | 04-15-2010 |
20110302911 | Methods And Systems For Subsea Electric Piezopumps - In at least some embodiments, an apparatus includes a hydraulic directional control manifold and a plurality of electric piezopumps. The apparatus also includes an electric piezopump controller that operates the plurality of electric piezopumps in varying combinations to provide generation and directional control of hydraulic power to linear hydraulic actuators using localized closed-loop hydraulic fluid. | 12-15-2011 |
20130031896 | AXIAL PISTON AND VALVE SHAFT FLUID ENGINE - Systems and methods for implementing a uniflow fluid engine having at least one cylinder having at least one high-pressure input and at least one low-pressure output. In some embodiments, the engine includes piston-operated valves that are related to the piston shaft and pistons that may also act as exhaust valves. In some embodiments, a valve is slidably positioned within the cylinder on the piston shaft, the valve being movable between a first position allowing input fluid to be conveyed through a first passage and blocking input fluid from a second passage, and a second position allowing input fluid to be conveyed through the second passage and blocking input fluid from the first passage. | 02-07-2013 |
20140298787 | Pulsed Hydraulic Pressure Amplification System - A hydraulic pressure amplification system for increasing the output pressure in the delivery pipe to or from a ram pump, a spring rebound inertia pump or similar cyclic pumps which deliver a pulsating flow. Said hydraulic pressure amplification system comprises a fluid inlet ( | 10-09-2014 |
060370000 | Pneumatic motor | 17 |
20090183504 | COMPRESSED AIR ENGINE AND POWER TRAIN SYSTEM - An engine and drive train system suitable for personal or commercial transportation vehicles. The system converts the expansive energy of compressed air or gas into mechanical energy to produce motion or force. The engine of the present invention further uses the intrinsic kinetic energy of the vehicle in motion to generate and store compressed air or gas for in-situ or later use. The engine may also be used for braking by the introduction of high pressure air or gas at maximum displacement. | 07-23-2009 |
20090249775 | Drive device using charged air pressure - In a drive device, two cylinders filled with air pressure are interconnected, and the pistons of the cylinders are pressed under the same pressure by compressed air supplied to the cylinders. The drive device has an external input device for applying an external input to the cylinders so that the pistons reciprocate alternately. The external input device causes the pistons to reciprocate alternately, and the reciprocation motion provides rotational force. The interconnected cylinders are multi-stage cylinders, pressurized air flow paths ( | 10-08-2009 |
20100058751 | RECIPROCATING PNEUMATIC PISTON GRAVITY ENGINE - A pneumatic reciprocating piston engine that uses a mixture of compressed air and water as the working fluid with a combination of gravity and spring force functioning to return the piston after completion of the power stroke is disclosed. A working fluid, preferably comprising a source of compressed air, is in fluid communication with the bottom portion of a generally vertically disposed cylinder via an inlet valve biased to a normally closed position. A piston is configured for reciprocating motion within the cylinder and traverses between bottommost and topmost positions. The piston is configured to engage the inlet valve when at the bottommost position thereby actuating the valve for a limited period of time to an open position so as to allow the introduction of compressed air and initiating of the power stroke to drive the piston upward. In a preferred embodiment, water is injected into the compressed air stream entering the cylinder to provide lubrication for the piston. The piston is drive upward by the working fluid until an uppermost stop is reached wherein the piston head has cleared an exhaust port formed in the cylinder thereby allowing the working fluid to escape. A mass is connected to the piston, in overhead relation, by a spring connection. When the piston reaches the uppermost stop, momentum causes the spring connected mass to continue upward thereby placing the spring in compression and maintaining the piston above the exhaust port so as to allow escape of the working fluid therethrough. Return of the mass downward, caused both by gravity and spring energy, causes the mass to engage the piston and return the piston to its bottommost position whereby another stroke is initiated. Power output may be transferred to any suitable system. | 03-11-2010 |
20100095662 | RECHARGEABLE RECIPROCATING PNEUMATIC PISTON ENGINE - A rechargeable pneumatic reciprocating piston engine that uses a mixture of compressed air and water as the working fluid with a combination of gravity and spring force functioning to return the piston after completion of the power stroke whereafter repeated power strokes may be achieved from a single charge of compressed fluid thereby providing a rechargeable pneumatic engine capable of running for an extended period of time on a single charge is disclosed. | 04-22-2010 |
20130047595 | AIR COMPRESSION METHOD AND APPARATUS - In a traditional hybrid air engine it is complicated to adjust valve timing to compensate for different engine operating modes. Provided is an air compression method and apparatus. The air compression method can be carried out in a single stage with a plurality of air tanks ( | 02-28-2013 |
20130118158 | COMPRESSED AIR ENGINE AND POWER TRAIN SYSTEM - An engine and drive train system suitable for personal or commercial transportation vehicles. The system converts the expansive energy of compressed air or gas into mechanical energy to produce motion or force. The engine of the present invention further uses the intrinsic kinetic energy of the vehicle in motion to generate and store compressed air or gas for in-situ or later use. The engine may also be used for braking by the introduction of high pressure air or gas at maximum displacement. | 05-16-2013 |
20130167520 | SELF-PRESSURE-REGULATING COMPRESSED AIR ENGINE COMPRISING AN INTEGRATED ACTIVE CHAMBER - An engine with an active chamber, having at least one piston ( | 07-04-2013 |
20130199169 | MULTISTAGE COMPRESSED GAS ENGINE AND MOTOR VEHICLE - Disclosed is a multistage compressed gas engine, comprising: impellers and at least one impeller chamber where the impeller is installed, the impellers including a first impeller and a second impeller; a plurality of working chambers being formed by the side plates on both sides between the teeth on the circumferential surface of the first and second impellers, and a plurality of gas chambers allowing relative sealing of injected gas being formed by inner surface of the impeller chamber where the impeller is installed and each of the working chambers; the impeller chamber where the first impeller is installed being provided correspondingly with a first-stage compressed gas injection hole and a first-stage compressed gas discharge hole, and the impeller chamber where the second impeller is installed being provided correspondingly with a second-stage compressed gas injection hole and a second-stage compressed gas discharge hole, the first-stage compressed gas discharge hole being connected at its output to the second-stage compressed gas injection hole. Also disclosed is a motor vehicle equipped with the above compressed gas engine. | 08-08-2013 |
20130291529 | COMPRESSED AIR ENERGY STORAGE SYSTEM UTILIZING TWO-PHASE FLOW TO FACILITATE HEAT EXCHANGE - A compressed-air energy storage system according to embodiments of the present invention comprises a reversible mechanism to compress and expand air, one or more compressed air storage tanks, a control system, one or more heat exchangers, and, in certain embodiments of the invention, a motor-generator. The reversible air compressor-expander uses mechanical power to compress air (when it is acting as a compressor) and converts the energy stored in compressed air to mechanical power (when it is acting as an expander). In certain embodiments, the compressor-expander comprises one or more stages, each stage consisting of pressure vessel (the “pressure cell”) partially filled with water or other liquid. In some embodiments, the pressure vessel communicates with one or more cylinder devices to exchange air and liquid with the cylinder chamber(s) thereof. Suitable valving allows air to enter and leave the pressure cell and cylinder device, if present, under electronic control. | 11-07-2013 |
20130333368 | SYSTEM AND METHOD FOR THE PRODUCTION OF COMPRESSED FLUIDS - The invention herein described consists of a single-cylinder free-piston engine system comprising a combustion cylinder, a compression cylinder, a seal between the two cylinders and a piston assembly, capable of being produced in a miniature scale (e.g., less than 10 cubic centimeters volume). The combustion cylinder consists of a holding chamber wherein fuel enters through a fuel inlet port before combustion, a combustion chamber wherein combustion occurs according to an HCCI process, after which the excess fuel and exhaust leaves the engine system through a port for exhaust, and a port extending from the holding chamber to the combustion chamber. The compression cylinder comprises a compression chamber wherein a compressible a compressible fluid enters through an inlet port, is compressed by the single-cylinder engine system, and the compressed fluid exits through an outlet port, and a rebound chamber wherein energy from the combustion process is conserved by a rebound element. | 12-19-2013 |
20140069090 | PRIME MOVER WITH RECOVERED ENERGY DRIVEN COMPRESSION OF THE WORKING FLUID - A prime mover with recovered energy driven compression for stationary and motor vehicle application. Efficient low compression operation, especially beneficial to small gas turbines, is enabled with either ambient or cryogenic intake air. Two features, exhaust gas recirculation by a jet-compressor and a heat of fusion sink to liquefy motive air to the jet-compressor, decrease regenerative heat exchanger terminal temperature difference relative to turbine temperature drop in low pressure operation while reducing heat exchanger surface area. | 03-13-2014 |
20140190154 | Steam Power Plant and Method for Operating It - The invention relates to a method for operating a steam power plant, comprising a steam engine which is operated with a vaporous working medium, an evaporator for evaporating the working medium; a condenser for liquefying the working medium and a reservoir for the working medium. The invention is characterized in that a lubricant sump in a housing of the steam engine is heated to a temperature above the evaporating temperature of the working medium by means of a heating device during the starting phase of the steam engine. | 07-10-2014 |
20140208732 | DIRECT COMBUSTION TYPE PLUNGER HYDRAULIC PUMP - A direct-fired plunger hydraulic pump, comprising a combustor ( | 07-31-2014 |
20140238009 | ACTUATOR - An actuator, including a cylinder, an actuator piston displacably arranged in the cylinder, a pressure fluid circuit having a channel mouthing in the cylinder, an indirectly electrically controlled first valve body, arranged in the channel for controlling a flow of a pressure fluid in the channel, and a second valve body, arranged in or at the channel to open and close the channel, the second valve body being a member fixedly connected to the actuator piston, and the first valve body and the second valve body being arranged in series with each other in the channel. The actuator further includes an electrically controlled three-way valve that is arranged to alternately open for a pressure fluid flow from a high pressure source and a pressure fluid flow from a low pressure source, chosen pressure fluid flow being arranged to act against and admit displacement of the first valve body. | 08-28-2014 |
20150354546 | PNEUMATIC ENERGY MACHINE - A pneumatic motor includes a pressure supply system, a power output system, a reset system, and a control system. In the pneumatic motor, pressure differences are formed between a first gas storage device, a second gas storage device, a third gas storage device and the atmosphere, a piston and other components are driven to move by the pressure differences, thereby converting the pressure energy into kinetic energy and continuously outputting energy. The pneumatic motor doesn't employ fuel oil to output energy, thus the pneumatic motor is green and environmental friendly. Meanwhile, with a special structure design, the pressure in the first gas storage device can be continuously converted into a driving force to be outputted, and the pneumatic motor may not dissipate heat outwards, thereby greatly reducing the heat loss and improving the energy conversion efficiency. | 12-10-2015 |
20160115973 | AIR MOTOR - An air motor has a source of pressurized air, two air chambers, a pilot valve and a directional control valve. The spool of the directional control valve is of the unbalanced type and includes a piston surface in continuous communication with atmosphere through an exhaust port and a pressurized restricted port in alternating communication with the large end of the spool and the piston surface. The alternating communication of the source of pressurized air through the restricted port is restricted relative to the continuous communication of the piston surface with atmosphere. At the point of shift of the directional control valve, the piston surface is in communication with the source of pressurized air through the restricted port. | 04-28-2016 |
20160121969 | A HYDRAULIC OR PNEUMATIC DRIVE SYSTEM, AND A MOTOR AND A PUMP THEREFOR - Hydraulic and pneumatic drive systems and fluid motors ( | 05-05-2016 |
060371000 | Having means to store and release energy usable to energize motor work output means | 2 |
20080202109 | Hydraulic Actuation Assembly - An assembly for the hydraulic actuation of safety equipment includes a hydraulic actuator disposed between a fluid feed line and a supply line in fluid communication with the safety equipment. A pump valve in the supply line downstream of the hydraulic actuator is adjustable between open and closed positions for providing hydraulic fluid to supply line. A fluid source communicates with a bypass line in fluid communication with the supply line. A bypass valve is disposed between the fluid source and the supply line and is lockable between open and closed positions for providing other hydraulic fluid to supply line. | 08-28-2008 |
20130186080 | ACTUATOR - An actuator related to the present invention includes a cylinder that has a tubular shape and is filled with a fluid; a piston that divides the inside of the cylinder into a first chamber and a second chamber in an axial direction of the cylinder, is reciprocable inside the cylinder, and opens and closes a main valve; a fluid supplying device for supplying the fluid to the second chamber; biasing device for biasing the piston in the axial direction toward the second chamber; a flow passage that communicates between the first chamber and the second chamber; and a pilot valve that cuts off the flow passage communicating between the first chamber and the second chamber. | 07-25-2013 |
060375000 | Correlated power input pumps and/or pressurized fluid sources | 1 |
20110289910 | Differential fluid pressure energy conversion system - A differential fluid pressure energy conversion system includes a valve (V | 12-01-2011 |
060376000 | Motor control means having timer or time delay means | 1 |
20090077957 | HYDRAULIC DRIVE SYSTEM AND METHOD OF OPERATING A HYDRAULIC DRIVE SYSTEM - A hydraulic drive system comprises a hydraulic actuator comprising a piston reciprocable between two cylinder heads for actuating a machine. A flow switching device reverses the direction of hydraulic fluid flow to and from chambers on opposite sides of the piston. The piston stops at the end of each piston stroke when a shuttle valve associated with the piston opens to allow hydraulic fluid to flow between the chambers cancelling the differential pressure that acts on the piston to cause reciprocal movement. A controller is programmed to determine when the piston reaches the end of each stroke based upon at least one of hydraulic pump speed, hydraulic fluid pressure, or elapsed time, with each of these measured during each stroke. The controller then sends an electronic signal to command the flow switching device to reverse the direction of hydraulic fluid flow. | 03-26-2009 |