With Toothed Gear, Spline Or Thread Rigid With Working Member Patents (Class 92/136)
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Patent number: 12157444Abstract: This disclosure is applicable to intelligent automobiles, new energy automobiles, conventional automobiles, or the like. In an example embodiment, a fluid outlet pipe of a first hydraulic chamber is configured in segments on a push rod support portion and a push rod. When a piston is located at an inner stop point of a piston stroke, a first hydraulic adjustment port located on the push rod support portion communicates with a second hydraulic adjustment port located on the push rod, and when the piston is located at a position other than the inner stop point in the piston stroke, the first hydraulic adjustment port does not communicate with the second hydraulic adjustment port.Type: GrantFiled: November 11, 2022Date of Patent: December 3, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Yongsheng Zhang, Weimiao Yang, Wei Zhang
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Patent number: 12104624Abstract: A device and a system for controlling the turning of an object includes a shaft enclosing a first space, and a sleeve forming a second space between the shaft and the sleeve. Movement of the sleeve is transmitted to movement of the object. The device further comprises a housing comprising means for rotating the shaft and at least one inlet for a lubricant, and a lubricant collector. The shaft has a first through hole extending from the first space to the second space, and the sleeve has at least a second through hole for providing the second space in fluid communication with the lubricant collector. The housing is in fluid communication with the second space, and the first space is pressurizeable for causing the lubricant in the second space to be displaced through the second through hole and collected in the lubricant collector.Type: GrantFiled: December 2, 2021Date of Patent: October 1, 2024Assignee: EMTW Production ABInventor: Arne Henriksson
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Patent number: 12055163Abstract: A pressure medium cylinder (1) for moving a toothed bar (3), comprising a toothed bar (3) on at least one side of which is formed a toothing (4). Inside the toothed bar (3), a cavity (6, 6a, 6b) is formed, extending to at least one end (7a, 7b) of the toothed bar. The pressure medium cylinder (1) further comprises a longitudinal structure (8, 8a, 8b), the longitudinal structure (8, 8a, 8b) and the toothed bar (3) being adapted movably in relation to each other, and the longitudinal structure (8, 8a, 8b) is adapted at least partly inside said cavity (6, 6a, 6b). The toothed bar (3) and longitudinal structure (8, 8a, 8b) are adapted in a sealed manner in relation to each other so that the toothed bar and the longitudinal structure are movable in relation to each other by the effect of a pressure medium.Type: GrantFiled: May 11, 2021Date of Patent: August 6, 2024Assignee: PONSSE OYJInventors: Toni Auvinen, Marko Halonen, Tommi Liukkunen
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Patent number: 11975415Abstract: An aeronautical aluminum alloy minimum-quantity-lubrication milling machining device includes a machine tool worktable and spindle connected with a machine tool power system. The spindle is connected with a tool holder that is fixed with a cutting tool. The machine tool worktable is provided with a machine tool fixture, the tool holder is connected with a minimum-quantity-lubrication mechanism, the machine tool fixture includes a fixture body that is fixedly provided with a limit block for contact with two adjacent side surfaces of a workpiece, the fixture body is provided with a plurality of clamping elements capable of pressing the workpiece against an upper surface of the fixture body, and a top of the clamping element is provided with a detection member for detecting a relative position between the clamping element and the spindle. The device can avoid interference and contact between a nozzle and the clamping element.Type: GrantFiled: June 7, 2021Date of Patent: May 7, 2024Assignees: QINGDAO UNIVERSITY OF TECHNOLOGY, SHANXI JINZHAO AVIATION TECHNOLOGY CO., LTD.Inventors: Min Yang, Hao Ma, Changhe Li, Xifeng Wu, Yixue Han, Yuying Yang, Xin Cui, Xufeng Zhao, Naiqing Zhang, Qidong Wu, Teng Gao, Yanbin Zhang, Bingheng Lu, Mingzheng Liu, Dongzhou Jia, Xiaowei Zhang, Xiaoming Wang
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Patent number: 11933428Abstract: A ball valve assembly includes a ball configured to rotate between an open position and a closed position. The ball valve assembly also includes a cradle having a ball-facing surface. The ball-facing surface faces the ball and is positioned at an end of a fluid passage through the cradle. In addition, the cradle is configured to rotatably support the ball to enable the ball to rotate between the open position and the closed position, and the cradle is configured to block movement of the ball toward the ball-facing surface to establish a separation distance between the ball and the ball-facing surface.Type: GrantFiled: June 24, 2020Date of Patent: March 19, 2024Assignee: OneSubsea IP UK LimitedInventors: Mangesh Edke, Mahesh Shenoy, John Kobersky, Malcolm Atkinson, Adam Tusing
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Patent number: 11873744Abstract: A thread locking mechanism may be include in a threaded portion of a removable part to enable the removable part to be securely locked to an assembly such that the removable part does not turn when another part is being attached or removed. The thread locking mechanism may also be un-locked when it is desirable for the removable part to turn and be removed from, or further secured to, the assembly. In some examples the removable part may be an oil filter adapter, the assembly may include an engine, and the other part may be an oil filter.Type: GrantFiled: August 21, 2020Date of Patent: January 16, 2024Assignee: Baxter PerformanceInventor: Kevin Baxter
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Patent number: 11668357Abstract: A brake for preventing rotation of a segment of a transmission line used for actuation of control surfaces of an aircraft, including a retaining arm configured for connection to a fixed element of the aircraft, a clamp and a connection member. The clamp includes a first clamp portion having a first engagement surface and a second clamp portion having a second engagement surface facing the first engagement surface. The clamp portions are movable with respect to each other so as to vary a distance between the engagement surfaces. The clamp portions are configured to apply a pressure toward each other with the transmission line segment being received between the engagement surfaces. The connection member interconnects the clamp and the retaining arm, and is selectively configurable between an unlocked configuration allowing relative movement between the clamp and the retaining arm and a locked configuration preventing the relative movement.Type: GrantFiled: November 27, 2018Date of Patent: June 6, 2023Assignee: AIRBUS CANADA MANAGING GP INC.Inventors: Michael Palermo, Pier Alexandre Guimond
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Patent number: 11525497Abstract: An actuator assembly is provided for converting rotation into linear displacement including a linear fluid dispensing tube for linear displacement. Hemispherical lugs are monolithically formed on the linear member. A primary gear includes a central bore having helix grooves formed into a surface of the central bore. The helix grooves receive the hemispherical lugs so that each helix groove mates with a respective hemispherical lug to reduce friction, so that hemispherical lugs slide smoothly within the respective helix grooves. Linear projections are formed on the exterior surface of the dispensing tube and extend longitudinally along the dispensing tube. A projecting portion has an aperture for receiving and guiding the dispensing tube through the linear displacement. Mating grooves are formed on an interior of the projecting portion for receiving and guiding the linear projections, thereby preventing the dispensing tube from rotating during travel.Type: GrantFiled: May 21, 2021Date of Patent: December 13, 2022Assignee: HTI TECHNOLOGY AND INDUSTRIES, INC.Inventors: Roger L. DeYoung, John Alan Hammar
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Patent number: 11454226Abstract: A pumping system for fracking fluid is designed to provide nearly constant flow rate. The pumping system includes a set of linear actuator pumping units, each driven by an electric motor. Each pumping unit includes a first set of pumping chambers that expel fluid when the linear actuator is moving in a first direction and a second set of pumping chambers that expel fluid when the linear actuator is moving in an opposite direction. The speeds of the actuators are coordinated such that a total flow rate of the pumping system is substantially constant.Type: GrantFiled: January 20, 2021Date of Patent: September 27, 2022Assignee: Schaeffler Technologies AG & Co. KGInventors: Andre Vazquez, Craig Hooker, Michael Conlin
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Patent number: 11221002Abstract: A method for operating a tandem motor linear rod pumping apparatus that includes first and second linear mechanical actuator systems each having a motor, and also includes a rod for a sucker-rod pump. The method calls for constructing the first and second linear mechanical actuator systems to operate within a single housing, and simultaneously operating each of the two motors in a manner that imparts reciprocating vertical motion to respective-vertically movable members of the first and second linear mechanical actuator systems. Each motor has a reversibly rotatable element that is operatively connected to the vertically-movable member of its respective linear mechanical actuator system, thus establishing a fixed relationship between the rotational position of the rotatable element and the vertical position of its respective vertically-movable member. The simultaneous operation of the two motors imparts a reciprocating vertical motion to the pump rod of the sucker-rod pump.Type: GrantFiled: December 21, 2018Date of Patent: January 11, 2022Assignee: Unico, LLCInventors: Andrew J. Hilgers, Michael A. MacDonald, Benjamin J. Gregory, Ronald G. Peterson
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Patent number: 11168769Abstract: An improved telescopic linear actuator is disclosed comprising a rotational drive mechanism specially adapted and assembled within a tubular housing to reduce noise and vibration of the actuator during its operation. The rotational drive mechanism includes an electric motor adapted for low current operation, a gearbox containing a planetary gear axially connected to the motor with a stepped-up gear ratio, and a drive screw member operatively connected to the gearbox to extend longitudinally through the tubular housing with a specially configured threaded surface formed along the screw member having a reduced thread count and associated increased thread pitch to operatively engage and drive a movable piston member through the tubular housing with a substantially silent glide being exhibited.Type: GrantFiled: September 13, 2019Date of Patent: November 9, 2021Assignee: LIPPERT COMPONENTS MANUFACTURING, INC.Inventor: Ronald K. Russikoff
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Patent number: 9476420Abstract: A supply pump includes a housing, a tappet and an anti-rotation pin. The housing has a cylindrical slide wall and an attachment hole. The tappet is provided in the housing to be slidably reciprocatable along the slide wall, and the tappet has an elongated hole. The anti-rotation pin includes an end pin inserted into the attachment hole to be attached to the housing, and a plug fixed to the housing to prevent the end pin from dropping out of the attachment hole. The end pin is fitted into the elongated hole of the tappet to prevent the tappet from rotating with respect to the housing. The end pin is provided separately from the plug.Type: GrantFiled: January 8, 2013Date of Patent: October 25, 2016Assignee: DENSO CORPORATIONInventor: Tadaaki Makino
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Patent number: 8920145Abstract: A hydraulic power module is provided with a plurality of hydraulic actuators. A piston of each of the hydraulic actuators is coupled with a drive plate and a screw is rotatably coupled with the drive plate. Rotation of the screw longitudinally displaces the drive plate to simultaneously actuate each of the hydraulic actuators. A second hydraulic power module may be coupled with the hydraulic power module, such that rotation of the screw also drives the screw of the second hydraulic power module.Type: GrantFiled: May 26, 2011Date of Patent: December 30, 2014Assignee: GTA Innovation, LLCInventor: David W. Brown
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Patent number: 8789455Abstract: 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.Type: GrantFiled: June 19, 2009Date of Patent: July 29, 2014Inventor: Josep Galceran Sole
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Patent number: 8646376Abstract: A plurality of ring-shaped sealing members are spaced from each other on the outer periphery of each of first and second end caps that seal openings of first and second cylinder holes. Ring-shaped flow paths are formed between adjacent ring-shaped sealing members. Parts of air flow paths that supply and discharge compressed air to and from pressure chambers of the cylinder holes are formed by the ring-shaped flow paths.Type: GrantFiled: September 3, 2009Date of Patent: February 11, 2014Assignee: SMC CorporationInventors: Kiyoshi Takeuchi, Mitsunori Magaribuchi, Kazuhiro Shinohara
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Patent number: 8567752Abstract: Rotary valve actuators having partial stroke damping apparatus are described herein. An example rotary valve actuator described herein includes a housing containing a first piston and a second piston opposite the first piston, where the pistons move in opposite directions to rotate a shaft of the rotary valve actuator. A damper is operatively coupled to at least one of the first piston or the second piston to slow the movement of the piston for only a portion of a stroke of the rotary valve actuator.Type: GrantFiled: September 2, 2009Date of Patent: October 29, 2013Assignee: Emerson Process Management, Valve Automation Inc.Inventors: Gerard ter Horst, Erwin van Dorp
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Patent number: 8530051Abstract: A high strength gear used as an element of a power transmission mechanism. The gear includes a base gear formed of an iron-based alloy subjected to carburizing or carbonitriding treatment. The base gear has an engaging surface with which an opposite gear is engaged. The engaging surface of the base gear is coated with a first diamond-like carbon film which has a hydrogen content of not more than 10 atomic % and a surface hardness ranging from 8 to 30 GPa in a nano-indentation test. Additionally, at least a part of the first diamond-like carbon film is coated with a second diamond-like carbon film which has a hydrogen content of not more than 10 atomic % and a surface hardness ranging from 50 to 90 GPa in the nano-indentation test. The second diamond-like carbon film has a surface roughness Ra ranging from 0.1 to 0.2 ?m.Type: GrantFiled: July 26, 2007Date of Patent: September 10, 2013Assignees: Nissan Motor Co., Ltd., Kabushiki Kaisha Kobe Seiko ShoInventors: Takurou Yamaguchi, Kenji Yamamoto
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Publication number: 20130220112Abstract: A cryogenic refrigerator includes a cylinder; a displacer configured to reciprocate in the cylinder; a driving unit configured to drive a rotational shaft having an axial direction oriented in a direction of reciprocating movement of the displacer; and a movement conversion unit configured to convert rotational movement of the rotational shaft into the reciprocating movement of the displacer. The movement conversion unit is a screw unit including a male thread and a female thread one of which is a part of the displacer.Type: ApplicationFiled: January 31, 2013Publication date: August 29, 2013Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventor: SUMITOMO HEAVY INDUSTRIES, LTD.
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Patent number: 8495948Abstract: A power distribution transmission unit (1) having a hydrostatic power branch (2) and a mechanical power branch (3) connected by a connection system (8). The connection system (8) at least partially damps transfer of oscillations between the power branches. The power flow can be passed between the power branches, via a connecting shaft (22) that compensates axial offset between a hydrostat shaft (18) of the hydrostatic power branch (2) and a mechanical branch shaft (20) of the mechanical power branch (3). The connecting shaft (22) is a hollow shaft and a spring device (27), elastically prestressing the hydrostat shaft (18), is arranged within the connecting shaft. The tooth profiles (23, 25) of the connecting shaft (22) are formed as curved outer teeth which engage in tooth profiles (24 and 26) of the hydrostat shaft (18) of the hydrostatic power branch (2) and of the shaft (20) of the mechanical power branch (3), in each case made as inner teeth.Type: GrantFiled: March 29, 2010Date of Patent: July 30, 2013Assignee: ZF Friedrichshafen AGInventors: Roland Rehtanz, Udo Brehmer
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Patent number: 8459174Abstract: The disclosure provides a rod-less cylinder, device adapted to longitudinally displace loads, said device comprising a shaft, a nut confined to move longitudinally within the shaft, a slider circumscribing said shaft and coupled to said nut, a drive adapted to displace said nut within said shaft, and a sensing means adapted to affect a signal sent via wireless means towards said drive.Type: GrantFiled: October 16, 2007Date of Patent: June 11, 2013Inventor: Eliezer Zeichner
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Patent number: 8393151Abstract: A flow rate control device of a hydraulic pump in a power steering system, may include an upper cam ring having a cam profile, which is fixedly installed, a lower cam ring having a cam profile, which is engaged with the upper cam ring to be relatively rotatable about the upper cam ring, and a rotor including a plurality of vanes and engaged with the upper and lower cam rings to form an inner space therebetween to pressurize oil by protruding the vanes in the inner space by centrifugal force while rotating.Type: GrantFiled: August 7, 2009Date of Patent: March 12, 2013Assignee: Hyundai Motor CompanyInventor: Seungbum Cho
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Patent number: 8356477Abstract: An actuator having two or more interconnected movement components, wherein the movement components are designed as linear actuators with substantially coaxial longitudinal axes or longitudinal axes that are parallel to each other and that are interconnected in longitudinal direction such that their linear movements are superimposed on one another, and such that at least one of the linear actuators can be stopped at one or several predetermined positions.Type: GrantFiled: June 13, 2008Date of Patent: January 22, 2013Assignee: Airbus Operations GmbHInventors: Bernhard Schlipf, Mark Heintjes
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Patent number: 8347779Abstract: In cylinder chambers 14 and 15 of a housing 10 constituting an actuator main body 13, racks 17 and 18, to both end portions of which piston portions 17a and 18a are provided, are reciprocably incorporated. A pinion 25 meshing with the racks 17 and 18 is provided on a rotary shaft 24 rotatably mounted to the housing 10. An inner ring 32 is incorporated inside an outer ring 41 fixed to the housing 10, and the inner ring 32 is attached to the rotary shaft 24 and rotates and drives a swung member. Rollers 43 serving as rolling elements are incorporated between an inner peripheral surface of the outer ring 41 and an outer peripheral surface of the inner ring 32, and the rotary shaft 24 and the inner ring 32 are rotatably supported by the outer ring 41 via the rollers 43.Type: GrantFiled: August 21, 2007Date of Patent: January 8, 2013Assignee: Koganei CorporationInventor: Kazuki Miyazawa
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Patent number: 8056466Abstract: The invention concerns pneumatic actuators for valves comprising a body closed by head flanges, two pistons moving in said body in opposite directions, an output shaft that turns actuated by the pistons, and a stop device on each head flange to limit the stroke of the pistons when they move away from each other towards the head flanges. On at least one side of the actuator body an adjusting device (22) is provided which includes stop means (26, 27) at varying distances from each other in a direction parallel to the movement of the pistons and arranged in a position to intercept and limit the stroke of the pistons when the latter move towards each other.Type: GrantFiled: October 11, 2007Date of Patent: November 15, 2011Assignee: OMAL S.p.A.Inventors: Tiziano Bravo, Alessandro Pasquali
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Patent number: 7921689Abstract: An improved method and apparatus are provided for constructing and operating a linear actuator, and equipment incorporating a linear actuator, by operatively connecting a pressure biasing pneumatic arrangement between the driving member and the driven member of a mechanical linear actuator for applying a unidirectional biasing force between the driving and driven members, along an axis of motion, regardless of the location or movement of the driving and driven elements with respect to one another along the axis of motion. The pneumatic biasing arrangement is also configured, connected and operated to reduce the force which must be exerted by the driving and driven members in extending and retracting the linear actuator. The pneumatic biasing arrangement may further be configured for preferentially aiding extension or retraction of the actuator.Type: GrantFiled: July 2, 2010Date of Patent: April 12, 2011Assignee: Unico, Inc.Inventors: Robb G. Anderson, James P. McCrickard, Thomas L. Beck
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Publication number: 20100288120Abstract: A rotary actuator comprises a housing, a shaft, at least one piston, and at least one closed-wound power spring coupled to the shaft. The housing defines a cavity. The shaft is disposed supported within the cavity of the housing and adapted for rotational displacement between a first position and a second position. The at least one piston is supported within the cavity of the housing and operatively coupled to the shaft. The piston is adapted for sliding displacement in association with rotational displacement of the shaft. The at least one closed-wound power spring is disposed within the cavity of the housing and operatively coupled to the shaft. So configured, the closed-wound power spring biases the shaft and the at least one piston into a predetermined relationship.Type: ApplicationFiled: May 15, 2009Publication date: November 18, 2010Applicant: General Equipment and Manufacturing Company, Inc., d/b/a/ TopWorx, Inc. ("TopWorx")Inventor: Bruce R. Penning
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Publication number: 20100288523Abstract: A below ground component management system includes a base plate disposed below a ground surface, a sleeve connected to the base plate and extending substantially perpendicular thereto toward the ground surface, and a cover sealably connected to an upper opening of the sleeve to form a substantially fluid-tight compartment with the base plate and the sleeve. The system also includes a component rack disposed within the compartment, and an actuator assembly configured to pass at least a portion of the rack through the opening. The actuator assembly includes a bracket, and first and second cylinders connected to the bracket. The first cylinder has a piston extending toward the base plate and the second cylinder has a piston extending toward the opening.Type: ApplicationFiled: May 14, 2009Publication date: November 18, 2010Applicant: Clear View Enclosures, Inc.Inventor: Robert J. Schilling
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Patent number: 7789013Abstract: Variable focus optical devices, in particular lenses, can include a cavity at least partially defined by a flexible member (2), which may be retained between engaging portions of a frame member (8) and a ring member (12), such that a peripheral region of the membrane is caused to change direction, more than twice. The engaging portions of the ring and frame may be high-friction surfaces. In addition, methods of filling a cavity of a lens with transparent fluid, methods of adjusting the pressure of fluid in the cavity, and methods of sealing such a cavity are described, as well the use of such lenses in adjustable spectacles.Type: GrantFiled: September 19, 2007Date of Patent: September 7, 2010Inventor: Joshua David Silver
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Publication number: 20100192765Abstract: Field adjustable piston actuators are described. An example field adjustable piston actuator includes a housing having opposing openings and a chamber. Additionally, the example piston actuator includes a first plate coupled to the housing and adjacent one of the opposing openings. Further, the example piston actuator includes a second plate coupled to a yoke and the housing. The second plate is adjacent the other one of the opposing openings. Further still, the piston actuator includes a volume adjuster to provide field adjustment to change a volume of the chamber.Type: ApplicationFiled: January 30, 2009Publication date: August 5, 2010Inventor: Michael W. McCarty
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Patent number: 7748308Abstract: An improved method and apparatus are provided for constructing and operating a linear actuator, and equipment incorporating a linear actuator, by operatively connecting a pressure biasing pneumatic arrangement between the driving member and the driven member of a mechanical linear actuator for applying a unidirectional biasing force between the driving and driven members, along an axis of motion, regardless of the location or movement of the driving and driven elements with respect to one another along the axis of motion. The pneumatic biasing arrangement is also configured, connected and operated to reduce the force which must be exerted by the driving and driven members in extending and retracting the linear actuator. The pneumatic biasing arrangement may further be configured for preferentially aiding extension or retraction of the actuator.Type: GrantFiled: September 25, 2006Date of Patent: July 6, 2010Assignee: Unico, Inc.Inventors: Robb G. Anderson, James P. McCrickard, Thomas L. Beck
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Publication number: 20100111732Abstract: A reciprocating piston liquid pump and piston driver mechanism includes a reciprocating piston liquid pump having a piston chamber and a piston reciprocating in the piston chamber from an unactuated position to an actuated position, with movement of the piston from the unactuated position to the actuated position causing the advancement of product. The piston driver mechanism includes a first driver member having an axis and a sloped circumferential surface extending along its axis, and a second driver member having an axis and a sloped circumferential surface extending along its axis. The first and second driver members are aligned along their axes and mate at an unactuated position along at least a portion of their sloped circumferential surfaces. Rotation of one of the driver members about its axis relative to the other of the driver members causes the second driver member to advance away from the first driver member toward an actuated position.Type: ApplicationFiled: November 3, 2008Publication date: May 6, 2010Inventors: Nick E. Ciavarella, David D. Hayes
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Publication number: 20100101408Abstract: An actuator having one or more pistons. The piston has a rack formed in a skirt of the piston, with the rack recessed within the skirt of the piston in a groove formed between a top lip and a bottom lip. The gear, also called a pinion, engages the rack between the top lip and the bottom lip. As the rack traverses the gear, the shaft that extends through the gear is rotated. The top lip and bottom lip, and the recessed rack that is present within the skirt of the piston adds strength to the piston where the piston engages the gear. The top lip and the bottom lip assist in maintaining alignment of the rack with the gear so that the rack and gear properly mesh.Type: ApplicationFiled: October 29, 2008Publication date: April 29, 2010Inventor: Shawn Keel
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Patent number: 7690293Abstract: A magnetic coupling system may be used in a fluid displacement apparatus to magnetically couple a drive shaft to a piston. The magnetic coupling system may include first and second magnetic couplers at the ends of the drive shaft and piston, respectively. The second magnetic coupler is configured to magnetically engage the first magnetic coupler and configured to mechanically engage the first magnetic coupler if the couplers disengage magnetically.Type: GrantFiled: January 5, 2007Date of Patent: April 6, 2010Assignee: Ivek CorporationInventors: Douglas S. Bensley, Robert C. Demers, James V. Bruno
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Publication number: 20100018387Abstract: In cylinder chambers 14 and 15 of a housing 10 constituting an actuator main body 13, racks 17 and 18, to both end portions of which piston portions 17a and 18a are provided, are reciprocably incorporated. A pinion 25 meshing with the racks 17 and 18 is provided on a rotary shaft 24 rotatably mounted to the housing 10. An inner ring 32 is incorporated inside an outer ring 41 fixed to the housing 10, and the inner ring 32 is attached to the rotary shaft 24 and rotates and drives a swung member. Rollers 43 serving as rolling elements are incorporated between an inner peripheral surface of the outer ring 41 and an outer peripheral surface of the inner ring 32, and the rotary shaft 24 and the inner ring 32 are rotatably supported by the outer ring 41 via the rollers 43.Type: ApplicationFiled: August 21, 2007Publication date: January 28, 2010Applicant: Koganei CorporationInventor: Kazuki Miyazawa
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Patent number: 7591216Abstract: In an actuator, a first piston is attached to a first toothed rack, and a second piston is attached to a second toothed rack. A rotary member is attached to one pinion mating with the first or second toothed racks. A first volume is disposed in the cavity on one side of the first piston. A second volume is disposed in the cavity on another side of the first piston. A third volume is disposed on a side of the second piston opposite the second volume. A first fluid port is in fluid communication with the first volume via a primary fluid passage. A second fluid port, which is external to the cavity, is in fluid communication with the second volume. A fluid passage in the housing, external to the cavity and separate from the primary fluid passage connects the first and third volumes independently of the primary fluid passage.Type: GrantFiled: April 5, 2006Date of Patent: September 22, 2009Assignee: Metso Automation USA Inc.Inventors: David Bayreuther, Leonard Armstrong
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Patent number: 7574953Abstract: According to a rotary clamp cylinder of this invention, in a rod cover 5, attachment holes 18 are formed so as not to intersect an axis CL of a piston rod 11, and pin members 19 are rotatably fitted in the attachment holes 18, respectively. An amount L of engagement between each pin member 19 and each turning guide groove 14 becomes greater, on the side of the axis CL of the piston rod 11 in the pin member 19 than on the side opposite to the side of the axis CL of the piston rod 11, and the outer circumferential face 21 of each pin member 19 on the side opposite to the side of the axis CL of the piston rod 11 can be supported by the inner face of each attachment hole 18, over substantially the entire length thereof. Accordingly, excessively large load and/or impact could be received by the pin members 19, as such the increase of the transfer speed upon clamping or unclamping, and/or attachment of a longer clamper 12 to the piston rod 11 can be further facilitated.Type: GrantFiled: August 6, 2007Date of Patent: August 18, 2009Assignee: Owa Machinery, Ltd.Inventor: Syuhei Tanaka
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Patent number: 7574952Abstract: The invention relates to a drive, especially for rotary, pivotal or linear drive units, comprising a working piston (16), housed in a cylinder (12) of a housing (14), impinged by fluidic pressure media and displaced in the axial direction. The invention is characterized in that mechanical coupling elements (22, 24) are disposed on the working piston and can be coupled with a motor (30) in such a manner that the motor slows down and/or drives the working piston in the axial direction. The invention also relates to rotary, pivotal or linear drive units comprising said drive and to a method for operating a drive or a rotary, pivotal or linear drive unit.Type: GrantFiled: February 21, 2005Date of Patent: August 18, 2009Assignee: Schunk GmbH & Co. KG Spann- und GreiftechnikInventors: Stefan Kerpe, Andreas Schuster, Bruno Fellhauer, Andreas Stanicki
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Patent number: 7540208Abstract: A reciprocal force outputting mechanism includes a main body and a power component combined therewith; the main body includes a slide slot and two compression passages communicated with the slot; a slide block is accepted in the slide slot; a stem is accepted in each of the two compression passages, one end of each stem is combined to one flank side of the slide block; the slide block can be driven to move to and fro to allow the two stems to be moved reciprocally to respectively output a push force to enhance the working efficiency.Type: GrantFiled: May 17, 2005Date of Patent: June 2, 2009Inventor: Tien-Chen Tung
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Patent number: 7487709Abstract: An adjustable-length actuating element comprises an energy storing device. A casing and a piston rod, which is displaceable in the casing, are provided within the actuating element. A spindle drive is integrated in the energy storing device. A driving shaft is in rotary driving connection with the piston rod.Type: GrantFiled: September 15, 2003Date of Patent: February 10, 2009Assignee: Suspa Holding GmbHInventors: Herbert Muller, Markus Happich
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Patent number: 7472640Abstract: A pneumatic control rotary actuator that incorporates a control piston of a rack toothing engaging with a pinion to cause it to rotate together with an item holder device; the pinion has toothing made up of several parallel pins (23) spaced at an angle, positioned and held orderly between a base flange (21) and an item holder disk head (22); the base flange and the disk are each produced by compression molding, die-casting, sinterization and the like, using a low mechanical resistance material whereas the pins are made of some other material with high mechanical properties and hardness.Type: GrantFiled: February 23, 2007Date of Patent: January 6, 2009Assignee: Gimatic S.p.AInventor: Giuseppe Maffeis
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Patent number: 7448312Abstract: The invention relates to a hydraulic swivel drive for a grab which has two tong-like movable grab arms, in particular two-shell grabs, having two swivel shafts which are pivotally supported in a shell carrier, are parallel to one another and whose shaft ends can be connected to the grab arms, as well as a shaft drive piece which is displaceably supported parallel to the swivel shafts and is in screw engagement with both swivel shafts so that the swivel shafts are rotated in opposite directions by displacement of the shaft drive piece. In accordance with the invention, the swivel drive is characterized in that at least one hydraulically chargeable plunger piston is provided to displace the shaft drive piece.Type: GrantFiled: December 13, 2004Date of Patent: November 11, 2008Assignee: Kinshofer GmbHInventor: Thomas Friedrich
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Patent number: 7363848Abstract: The invention relates to a rotating or pivoting device (110) comprising a housing (12), at least one working piston (14) which is mounted in the housing and subjected to a pressure medium, and a pivoting part (20) which is rotatably mounted in the housing and is rotatably driven by the working piston by means of a rotating coupling mechanism, the working piston being mounted in the housing in such a way that it can be displaced in a housing-side cylinder, The inventive rotating or pivoting device also comprises an abutment part (114) that limits the stroke of the working cylinder in at least two positions and can be locked at least in its axially inner intermediate position.Type: GrantFiled: April 13, 2004Date of Patent: April 29, 2008Assignee: Schunk GmbH & Co. KG Fabrik fuer Spann-und GreifwerkzeugeInventor: Andreas Hoch
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Patent number: 7357066Abstract: The disclosed sealing structure is used with a piston assembly which exhausts a content. A sealing washer has a sealing hole through which a screw pillar is inserted and is configured to be formed between a piston and a screw cap of the piston assembly. The sealing washer is configured to seal a chink that is generated between threads of the screw pillar at an exhausting of the content when the piston assembly is removed by the screw pillar. The sealing washer has an elasticity such that any space between the sealing hole and the threads of the screw pillar is closed at the exhausting of the content.Type: GrantFiled: September 30, 2003Date of Patent: April 15, 2008Inventor: Sung Ill Kang
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Patent number: 7311035Abstract: The invention relates to the field of offshore subsea oil and gas drilling and production operations. Specifically the invention relates to a hydraulically and/or mechanically driven junction plate actuator suitable for use in connecting and/or disconnecting a dynamic junction box half to a fixed junction box assembly.Type: GrantFiled: January 12, 2006Date of Patent: December 25, 2007Assignee: Oceaneering International, Inc.Inventor: Graeme Edwin Reynolds
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Patent number: 7293967Abstract: A constant rate discharge pump comprises a rotary shaft which is rotatable together with a rotary driving source, a piston which is displaceable in an axial direction in a pump chamber of a body by the rotation of the rotary shaft and which has a tapered surface having diameters reduced downwardly on an outer circumference thereof, and a skirt section which is disposed on the piston and which extends radially outwardly. The constant rate discharge pump further includes a valve plug membrane of a resin material which is displaceable together with the piston, and a pressure sensor installed in the body which detects a pressure of a fluid flowing through the pump chamber.Type: GrantFiled: October 9, 2003Date of Patent: November 13, 2007Assignee: SMC Kabushiki KaishaInventors: Yoshihiro Fukano, Takamitsu Suzuki
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Patent number: 7290480Abstract: A swing cylinder having a body and an end cap on each end of the body. The cylinder also has a piston arranged within the body. The cylinder has a rod engaged with the piston and has an arm attached to one end thereof. A guide is arranged on the opposite end of the rod. The guide is also attached to one of the end caps.Type: GrantFiled: February 2, 2006Date of Patent: November 6, 2007Assignee: Delaware Capital Formation, Inc.Inventor: Matthew Rentz
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Patent number: 7287458Abstract: A yoke structure for a compressor is disclosed, which is applied to a scotch yoke type reciprocating compressor. The yoke structure comprises a crankshaft (10); a crankpin (20) connected to the crankshaft (10), to rotate along a predetermined round trajectory which has the crankshaft at its pivot, as the crankshaft rotates; a frame having a pair of slide ways (41) formed on two parallel inner faces of the frame (40) opposing each other, one or more pistons (30) to be fixed to outer faces of the frame outside the slide (41) ways; a sliding block (30) positioned between the pair of slide ways (41) and rotatably connected to the crankpin (20); and a pair of self-lubricating materials (32) attached to the sliding block (30) so as to be in contact with opposing faces of the slide ways (41).Type: GrantFiled: May 31, 2002Date of Patent: October 30, 2007Assignee: LG Electronics Inc.Inventors: Xiufeng Gao, In Kyu Kim, Kyeong Ho Kim, Young Joo Bae, Yongzhang Yu, Shiyu Feng
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Patent number: 7267044Abstract: A manually and/or fluid-pressure operated rotary actuator is coupled with a power screw in a compact assembly to produce large linear thrust. The actuator is operated in both directions by fluid pressure or in one direction by fluid pressure and in the other by spring energy, or by fluid pressure alone or in combination with manually applied force. The actuator has a cylindrical housing, a cylindrical reaction member inside of the housing, a cylindrical piston partially covering the reaction member, a cylindrical rotor partially covering the piston, a device forcing rotation of the piston when moving axially with respect to the reaction member and/or rotor, a plunger engaged with the rotor and restrained from turning with respect to the housing, a base through which the plunger extends, a spring connected to the rotor and housing, a two port assembly, and a handle affixed to the reaction member for manual operation.Type: GrantFiled: February 16, 2006Date of Patent: September 11, 2007Inventor: John Hamilton Klinger
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Patent number: 7213504Abstract: This invention is a bi-directional hydraulic actuator comprising a piston assembly positioned within a housing. The piston assembly is configured to move linearly within the housing. A gland is operatively connected to the piston assembly. The gland is configured as a rigid longitudinally annular member with a first end, a second end, a sidewall and is open on the first end and substantially closed on the second end which forms an inside and an outside of the annular member. The gland is further configured with a lip extending from around the outside of the first end of the gland. A pressurizing fluid exerts pressure on the inside of the gland to move the piston assembly a first direction, then, a fluid exerts pressure on the outside of the gland and the lip of the gland to move the piston assembly opposite the first direction.Type: GrantFiled: May 2, 2005Date of Patent: May 8, 2007Assignee: Rosenboom Machine & Tool, Inc.Inventors: Darin Michael Rosenboom, Brian D. Rosenboom, Ryan L. Bolkema
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Patent number: 7210720Abstract: A fluid-powered tool assembly having first and second tool members, a body, and first and second rotatable shafts. The first shaft is attached to the first tool member for rotation therewith about a first axis, and the second shaft is attached to the second tool member for rotation therewith about a second axis. A linear-to-rotary force transmitting member is mounted for reciprocal longitudinal movement in response to selective application of pressurized fluid thereto.Type: GrantFiled: June 28, 2002Date of Patent: May 1, 2007Assignee: 1994 Weyer Family Limited PartnershipInventor: Michael Kevin Kehler