| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 092120000 | OSCILLATING WORKING MEMBER OR CYLINDER THEREFOR | 16 |
| 20090151553 | Air Spring Pneumatic Product Rejection System - A double-acting cylinder and piston mechanism comprising a cylinder ( | 06-18-2009 |
| 20100071545 | PLANETARY ROTATION MACHINE - A planetary rotation machine including at least one ring channel which is curved along an at least partial arc and that contains a piston that can be moved in a fluid generating a movement. The piston can be coupled to a rotary body coaxially arranged by a lever by the rotational axis thereof. A stable structure able to transmit high torques is obtained by guiding the lever through a gap created in the wall of the ring channel in a direction of displacement of the piston, in a radial direction away from the piston in a sealed manner. | 03-25-2010 |
| 20110247486 | Reciprocating Compressor - A reciprocating compressor including an oscillation-type piston mechanism is provided with a piston ring which is mounted in a piston ring groove to seal space between a piston and a cylinder. A ring groove other than the piston ring groove is provided at an outer periphery of the piston on a side away from the piston ring groove and closer to a crank shaft. A guide ring, which is inhibited from radial movement and shaped like a skirt opened toward the crank shaft, is mounted in the ring groove. | 10-13-2011 |
| 20110271830 | DRIVE MECHANISM FOR AN OSCILLATING PISTON ROTOR - Drive mechanism for the conversion of oscillatory motion into rotating motion or vice versa by means of a non-circular gear train, in a system composed of arcuate pistons solidly fixed to a rotor which is able to oscillate about its axis inside a stator. The mechanism comprises a set of non-circular internal and external toothed gears coupled in a fashion similar to that of two epicyclic gearings joined by their respective planet gears, although there are not any sun gears in the present arrangement. All the gears cooperate so as to produce the sought motion conversion between the pistons and the planet carriers and the drive shaft attached thereon. Its field of application includes therefore any device that uses variable volume chambers as a means to transmit energy to, or obtain energy from, a working gas, such as compressors, pneumatic motors or internal combustion engines. | 11-10-2011 |
| 20130133513 | ROTARY ACTUATOR - A cylinder is installed within a case, and an output shaft and an arm that is integrated thereto and extends in a radial direction are installed within the cylinder. A piston extending in an arc slides and is displaced in a circumferential direction of the cylinder within the cylinder. One end portion of the piston is rotatably connected to the arm. The cylinder is internally provided with a first pressure chamber in which the arm is housed and a second pressure chamber in which the other end portion of the arm is slidably installed. A pressure medium is fed into one of the first and second pressure chambers and discharged from the other, and the output shaft pivots in a rotational direction. | 05-30-2013 |
| 20130284014 | RADIAL CYLINDER HYDRAULIC MACHINE WITH IMPROVED OSCILLATING RADIAL CYLINDER - A hydraulic machine includes oscillating radial cylinders close to an external shell of a crown or star of cylinder-piston groups. The pistons of the groups are made sliding on a crank shaft with throw or on interposed concentric elements, which create an alternative movement in the oscillating radial cylinders. The oscillating cylinders are placed in contact with a spherical oscillation surface made on a body or shell of the hydraulic machine. A passage of the hydraulic liquid to and from the oscillating radial cylinder, to create feeding and discharge of the cylinder, is formed through at least a flat lateral external surface on the side of the oscillating cylinder, parallel to an oscillation plane of the cylinders, to and from a feeding channel on a lateral body or cover of the hydraulic machine. A seal ring, fitted at least with a contact surface that is resistant to abrasion on the wall of the lateral flat sliding surface, is interposed between the flat lateral surface in contact for passage of the liquid under pressure, and a thrust member is formed on the oscillating cylinders against the spherical oscillation surface outside of the cylinders themselves. | 10-31-2013 |
| 20160003043 | AXIAL PISTON MOTOR AND METHOD FOR OPERATION OF AN AXIAL PISTON MOTOR - To provide an axial piston motor, comprising at least one main burner, which has at least one main combustion space and at least one main nozzle space, and comprising at least one pre-burner, which has at least one pre-combustion space and at least one pre-nozzle space, wherein the pre-combustion space is connected to the main nozzle space by way of at least one hot gas feed, that has improved operating and control characteristics even under non-steady-state operating conditions, the pre-nozzle space of the pre-burner has at least one auxiliary hot gas feed. | 01-07-2016 |
| 20160061195 | COMPRESSION MACHINE WITH A BODY OSCILLATING BETWEEN TWO REVERSAL POINTS - A compression machine ( | 03-03-2016 |
| 20160177722 | ROTARY ACTUATOR | 06-23-2016 |
| 20160201696 | Rotary Piston Type Actuator | 07-14-2016 |
| 092121000 | Oscillatory shaft with radially extending vane | 6 |
| 20100064885 | Rotary Actuator With Internal Brake Mechanism - A vane type hydraulic rotary actuator incorporates a fail-safe brake for preventing movement of the device's rotor relative to a housing in which the rotor is journaled. The brake has a spring-biased piston that is forced to a locked condition whenever applied hydraulic operating pressure acting on the vane falls below a predefined limit. The rotary actuator also incorporates an improved sealing arrangement that prevents egress of hydraulic fluid from a high pressure chamber on one side of the vane to a low pressure chamber on the opposite side of the vane. | 03-18-2010 |
| 20140174287 | Rotary Vane Actuator With Continuous Vane Seal - The subject matter of this specification can be embodied in, among other things, a rotary vane actuator that includes a rotor assembly including a rotor hub. The rotor hub has a first and second vane assembly disposed radially on the rotor hub. Continuous seals are disposed in continuous seal grooves along pathways provided along the vanes. A stator housing having a central chamber includes an interior surface adapted to receive the rotor assembly, the interior surface is adapted to continuously contact the first continuous seal and the second continuous seal when the rotor assembly is rotated inside of the central chamber. The vane assemblies and the stator housing define pressure chambers inside of the central chamber. | 06-26-2014 |
| 092124000 | With resiliently biased vane peripheral portion | 1 |
| 20140260952 | ROTARY VANE ACTUATOR SEAL - A sealing system for use in a rotary vane actuator having a stator and a rotor coupled to the stator. The rotor or the stator has a vane. The rotor or the stator has a groove within which the seal is positioned. The stator, the rotor and the seal coact to define a chamber. The vane being movable thereby altering a volume of the chamber, with the seal being continuous. | 09-18-2014 |
| 092125000 | Vane includes non-metallic peripheral sealing portion | 3 |
| 20100077917 | SEALING DEVICE - The invention relates to a sealing device for a swivel motor comprising an outer part and an inner part as well as at least one working chamber located between them, which seals the working chamber and comprises at least two rectangular sealing element housed in a groove enclosed in the outer and/or inner part running essentially parallel to the swivel axis of the swivel motor, each of which comprises at least one rectangular sealing plant and at least one gasket. | 04-01-2010 |
| 20120137873 | Rotary Vane Actuators - A rotary vane type actuator includes a vane assembly for converting pressure from a pressurised medium within the actuator into rotational movement. The vane assembly has a rotatable vane and a vane seal for preventing leakage of pressurised medium through or around the vane assembly. A side-plate is attached to the rotatable vane and the side-plate has a limiting protrusion that abuts the vane to maintain a gap between the vane and the side-plate so that the seal in the gap is not extruded from between the vane and side-plate. | 06-07-2012 |
| 20140157980 | ROTARY ACTUATOR WITH HYDRAULIC VALVE - A rotary actuator including a hydraulic valve including a borehole with shoulders, and a first operating connection and a second operating connection originating from the borehole, wherein a pressure balanced hollow piston is arranged axially movable in the borehole, wherein the hollow piston is fitted with a first outer diameter in a borehole section in a sealing manner, wherein the hollow piston includes the following axially subsequent to the first outer diameter: an enveloping surface with a large outer diameter in an axial portion of the first operating connection, and an enveloping surface with a small outer diameter in an axial portion of the second operating connection, wherein an inlet edge and an outlet edge extends from each of the first enveloping surface and the second enveloping surface, wherein the two inlet edges are oriented away from one another and the two outlet edges are oriented towards one another. | 06-12-2014 |
