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Patent Searching and Data


Matches 1 - 50 out of 23,298

Document Document Title
WO/2019/096617A1
The invention relates to a piston rod (2) comprising a piston (1), in particular for a fluid-operated actuator (10), the piston (1) being connected to the piston rod (2) and being made of a hybrid material. The invention further relates ...  
WO/2019/091512A1
The invention relates to a method and to a device (28) for determining the position of a piston (30) of a hydraulic cylinder (26) of a machine tool (10). In order to enable more accurate position detection, in particular in order to moni...  
WO/2019/091635A1
The invention relates to a level control system (10) for adjusting the level of a vehicle, in particular a rail vehicle, comprising at least one level control cylinder (13) and a level control piston (16). The level control piston (16) i...  
WO/2019/093274A1
According to the present invention, a cylinder tube (100) is provided with: a main body part (10) which has a through hole (11) that opens to end faces; and a cover part (20) which closes an opening of the through hole (11) of the main b...  
WO/2019/091638A1
The present invention relates to a levelling system (10; 10') for a vehicle, in particular a rail vehicle (12), comprising at least one levelling cylinder (18) and a levelling piston (16; 16'). The levelling piston (18; 16') is at least ...  
WO/2019/094956A1
Valve shutters to operate by means of gear engagement, so that a gas valve may be accurately rotated open or closed; wherein a pinion gear, which connects to a handle portion of a gas valve and rotates the handle of the gas valve, is dis...  
WO/2019/089928A1
A harmonic drive assembly and fluid-powered linear motors with both axial pistons are rotary piston arrangements incorporating the harmonic drive assembly are disclosed. The motors may be used in downhole drilling applications, but the d...  
WO/2019/085491A1
A return cylinder for a hydraulic machine and an operating method thereof. The return cylinder for a hydraulic machine comprises multiple single-rod return hydraulic cylinders (5) symmetrically arranged at two sides of a main hydraulic c...  
WO/2019/086768A1
The invention relates to a multi-process machine and specifically to its suspension device (20) equipped with two hydraulic cylinders (25, 27) for rotating the machine relative to an arm (21) supporting it. One cylinder (2.5) is pivoted ...  
WO/2019/087267A1
The present invention addresses the problem of providing a pneumatic actuator with improved durability. As a solution therefor a pneumatic actuator (10) is characterized by being equipped with an actuator main body section (100) configur...  
WO/2019/086181A1
The electro-hydraulic linear actuator comprises an individual pump unit (P) that is driven via a motor and in a rotational manner. The pump unit (P) is fluidically connected to the working chamber of the first hydraulic cylinder (Z1) and...  
WO/2019/076563A1
An actuating device (10) for a motor vehicle, comprising a housing (12) and a multi-part working piston (14) which is movable in relation to the housing (12), wherein the multi-part working piston (14) has a main piston (22) and an adjus...  
WO/2019/076394A1
The invention relates to a hydraulic unit of a reversible plough, comprising a double-acting working cylinder (1) and a hydraulic control unit (2), in which: the piston (3) comprises a radially peripheral seal (8) and at least one piston...  
WO/2019/077987A1
A piston (6) is inserted hermetically into a cylinder hole (2) in a housing (1) with a sealing member (7) interposed therebetween, in such a way as to be capable of moving in a vertical direction. A communicating passage (21) formed in a...  
WO/2019/076412A1
A drive assembly for adjusting the pitch of a wind turbine blade comprises a stator having a cylindrical body and a drive member positioned at least partially within the cylindrical body and movable along an axis thereof. A mounting pin ...  
WO/2019/077207A1
The oscillation cylinder arrangement (100) comprises a working cylinder (10A) and a piston with a rod (27A), arranged to move therein, and a control valve structure (20) for the working cylinder (10A). The control valve structure (20) in...  
WO/2019/076391A1
The invention relates to a two-way hydraulic unit comprising a double-acting working cylinder (1) and a hydraulic control unit (2), in which: the piston (3) comprises a radially peripheral seal (8), a first piston ring (9) with a first p...  
WO/2019/068879A1
The invention relates to a hydraulic arrangement (24). The hydraulic arrangement (24) has multiple hydraulic units (20a, 20b), the control units (26a, 26b) of which are connected, in particular in series, via a data connection (28). The ...  
WO/2019/069797A1
A pressure resistance instrument (100) comprises: a cylindrical main body part (110); a lid part (120) at which a wall part (122) and the main body part (110) are joined together; a positioning part (140) provided facing the inner periph...  
WO/2019/071167A1
A fluid-powered linear motor with rotary pistons is disclosed. An application is for a downhole motor but it could be used in other applications. Rotational pistons provide increased torque generation as the torque generated is proportio...  
WO/2019/064269A1
A sensor assembly includes a body having a guide surface. A sensor head is mounted to the body. An elongated sensing element has a first end connected to the sensor head and a second end extending away from the first end along the body a...  
WO/2019/067291A1
A control loop for a double-acting pneumatic actuator is configured to generate two control signals, one for each of the two pneumatic chambers for the purpose of controlling the actuator position in view of operating constraints on the ...  
WO/2019/065860A1
The present invention pertains to an artificial muscle comprising an elastic-body tube and a sleeve containing high-strength fibers, wherein: the outside of the elastic-body tube is covered by the sleeve; the tube coverage rate is 70-100...  
WO/2019/058102A1
An e.g. fluid powered linear actuator (30) is provided with a helical orientation surface (40) in a fixed angular position relative to a first component (32); and a follower (50) in a fixed angular position relative to a second component...  
WO/2019/056842A1
A completely integrated cylinder capable of reciprocating rotation. A manifold block (5) is positioned above a horizontal cylinder casing (2) and integrated with a cylinder body (8). A right fuel channel (5.1) of the manifold block has a...  
WO/2019/060285A1
An adapter converts a fastener driving tool into an automatic (multiple shots per second) pneumatic fastener driving tool. The adapter is mounted to the top of the frame body of a pneumatic fastener driving tool, in which the adapter has...  
WO/2019/053397A1
The present invention provides a seal housing (102) for releasable attachment to a hydraulic or pneumatic cylinder (101), the seal housing (102) being suitable for retaining a seal assembly and the seal housing (102) comprising a general...  
WO/2019/054624A1
The present invention relates to a fluid supply structure for an actuator piston assembly, the structure being formed such that a fluid is supplied or discharged through one inflow/discharge path at each of a pair of chambers for operati...  
WO/2019/049500A1
This hydraulic cylinder (10) is provided with a cylinder tube (12), a piston unit (18), and a piston rod (20). The piston unit (18) has: a piston body (40); packing (42) mounted on the piston body (40); a holding member (44) mounted on t...  
WO/2019/049501A1
This piston unit (18) is provided with: a piston body (40); packing (42) mounted on an outer circumferential portion of the piston body (40); a holding member (44) having a plurality of magnet holding portions (58) that are arranged alon...  
WO/2019/050413A1
An electrohydraulic device is described which in certain embodiment has an extender which is arranged to be actuated by hydraulic fluid, and a rotor of an electric motor, the rotor being arranged to rotate about a part of the extender. T...  
WO/2019/051172A1
A liquid delivery system (106) includes a source of hydraulic fluid (502) and a hydraulic cylinder (114) fluidically coupled to the source of hydraulic fluid (502) and having a hydraulic piston (224) movable between first and second limi...  
WO/2019/047684A1
An axial constant-pressure floating device, comprising a floating shaft (1), a constant-pressure outer cylinder (2), a constant-pressure inner cylinder (3), and a floating piston (4). The constant-pressure inner cylinder (3) and the floa...  
WO/2019/044342A1
Provided is a balancer cylinder (10) attached such that the axial direction thereof is perpendicular to a workpiece-conveying apparatus (100) having a pressure fluid supply source (16), wherein a second flow channel (28b) through which t...  
WO/2019/040505A1
Embodiments of the present invention describe the arrangement of bearings in actuators. In particular, the bearings are fit into a surface of the actuation member instead of into the housing for the actuation member. In an exemplary embo...  
WO/2019/038150A1
The invention relates to a circuit assembly (110) for operating a piezohydraulic actuator (10), comprising: a first supply connection (E1) and a second supply connection (E2) for applying a supply voltage; a first output connection (A1) ...  
WO/2019/035906A1
A modular electrohydraulic actuator including an electric motor, a hydraulic pump driven by the electric motor, and a hydraulic actuator in fluid communication with the hydraulic pump. The hydraulic actuator includes a hydraulic cylinder...  
WO/2019/033230A1
An intelligent clamping force adjusting oil cylinder, comprising a base (1), a lower pump body (2), an upper pump body (3), a pressing rod (4), a signal amplifying circuit board (8), a sensor head (9), an oil plug (11), a piston, an oil ...  
WO/2019/030362A1
The present disclosure relates to a pre-fill hydraulic cylinder for actuatin a pre-fill valve. The pre-fill hydraulic cylinder has features for providing enhance alignment between a valve seat and a poppet moved by the pre-fill hydraulic...  
WO/2019/032904A1
A sealing ring (200) includes a first sealing element (220) having a first mating surface and a second sealing element (230) having a second mating surface. A high-pressure boundary (250) extends across at least a portion of the first se...  
WO/2019/032922A1
The present disclosure provides a sealing ring assembly having a ring and one or more gap cover elements, configured to seal a high-pressure region from a lower pressure region of a piston and cylinder device. The ring may be segmented, ...  
WO/2019/029957A1
The invention relates to a large manipulator for concrete pumps having a boom pedestal which is arranged on a chassis and can be rotated about a vertical axis of rotation, having an articulated boom which is composed of at least two boom...  
WO/2019/025285A1
A lever mechanism (10) for converting a motion from linear to rotary, comprising a guiding bar (55), a slider (60) which slides along the guiding bar (55) and acts on a lever (15) by means of a pivot (65); the lever (15) comprising a cyl...  
WO/2019/026892A1
This hydraulic drive device is provided with: an electric motor; a variable capacity pump which is driven by the electric motor and which has a pair of pump ports of which a discharge side and a suction side switch in accordance with the...  
WO/2019/020617A1
Disclosed is a swiveling unit for swiveling objects, comprising a housing and at least one piston which delimits at least two chambers, further comprising an adjustable element which can be moved in different movement phases according to...  
WO/2019/015109A1
The present invention belongs to the field of mechanical apparatuses, and provides a duplex oil cylinder, a crossbeam opening and closing device, a crossbeam opening and closing method, and a crossbeam opening and closing control system....  
WO/2019/011907A1
The invention relates to a hydraulic actuator (100) comprising a barrel (2), a plunger piston (8), and a loose piston (14); said plunger piston is being arranged inside said barrel and at a first axial end (10) thereof comprises a piston...  
WO/2019/011713A1
The invention relates to a hydraulic cylinder comprising a body (1) having a wall (3) that defines an internal cylindrical cavity (2), with a cylindrical cavity axis (X), in which a piston (4) is movably mounted, said piston (4) separati...  
WO/2019/011860A1
The present invention relates to a hydraulic valve control unit for an open center hydraulic system, the open center hydraulic system comprising a pump, a shunt valve and one or more actuator valves coupled to the shunt valve, wherein ea...  
WO/2019/014430A1
The subject matter of this specification can be embodied in, among other things, a rotary actuator that includes a housing defining a first arcuate chamber portion and comprising a first cavity, a first open end, a first seal carrier ass...  

Matches 1 - 50 out of 23,298