Fluid Conduit Or Port In Fixed Wall Of Working Chamber Patents (Class 92/163)
  • Patent number: 11174881
    Abstract: A pressure resistant device includes a tubular main body portion, a lid portion having a wall portion joined to the main body portion, a positioning portion provided to oppose an inner peripheral surfaces of the main body portion and the wall portion, and a groove portion formed on the inner peripheral surface, and the positioning portion is provided to oppose an edge of the groove portion.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: November 16, 2021
    Assignee: KYB CORPORATION
    Inventors: Toshio Kobayashi, Kazuhiko Matsumoto, Norifumi Imai, Takahiro Hikasa
  • Patent number: 11028740
    Abstract: A lubricating oil supply structure includes: a shaft; a bearing supporting the shaft and having an oil supply port, through which lubricating oil is supplied to between the shaft and the bearing, and an oil introduction port, through which the lubricating oil is introduced; a first oil passage, connected to the oil supply port, distributing the lubricating oil from an oil pump toward the oil supply port; a second oil passage, connected to the oil introduction port, supplying the lubricating oil introduced through the oil introduction port to a supply destination; a connection oil passage, formed by a gap between the bearing and the shaft, connecting between the first oil passage and the second oil passage, and a throttle portion, formed on a part of the connection oil passage, suppressing a flow of the lubricating oil from the oil supply port toward the oil introduction port.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: June 8, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takashi Koyama
  • Patent number: 10612570
    Abstract: In a fluid pressure cylinder, a piston unit, which is displaced along an axial direction under the supply of a pressure fluid, is disposed in the interior of a cylinder tube of the fluid pressure cylinder. The piston unit includes a disk shaped plate body connected to one end of a piston rod, and a ring body connected to an outer edge portion of the plate body. The plate body is formed from an elastically deformable metal material, and by the plate body becoming elastically deformed and flexing when the ring body of the piston unit abuts against the head cover or the rod cover, shocks applied with respect to the piston unit are buffered.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: April 7, 2020
    Assignee: SMC CORPORATION
    Inventors: Yasunaga Suzuki, Chiaki Fukui, Makoto Yaegashi
  • Patent number: 9746006
    Abstract: An open end of a cylinder main body is blocked by a cap, which includes a main body portion, and an outer edge portion that bends from the main body portion toward the open end of the cylinder main body, a distal end of the outer edge portion being locked with an inner circumferential wall. When a piston comes into abutment against the main body portion, a space is formed by the outer edge portion, the inner circumferential wall, and the end surface of the piston. A first port is disposed so as to communicate with the space, whereby the space serves as a space into which the pressure fluid is introduced.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: August 29, 2017
    Assignee: SMC KABUSHIKI KAISHA
    Inventors: Koichiro Ishibashi, Koji Hara, Toshio Sato
  • Patent number: 8770221
    Abstract: In order to achieve seal durability and bring about a damping action for a piston-type pressure regulating valve, a pressure regulating valve of the present invention is characterized by a valve moving member moving in such a manner as to cause communication or block communication between a primary chamber and a secondary chamber within a case, wherein a plurality of central members are arranged between the case and the valve moving member and the plurality of central members are taken to be different materials. It is then possible to bring about both a damping action and seal durability using the central members by providing central members of different materials.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 8, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tsukuo Ishitoya, Nobuo Kobayashi, Nobuyuki Ogami, Akira Yamashita
  • Publication number: 20140013938
    Abstract: A shaft sealing device switches a sealing state and an unsealing state of a fluid, with high sealing performance maintained, because no abrasion accompanies movement of a sealing material or a sealing member, enabling feeding a fluid at a predetermined flow rate, and adjusts the expanding rate of the sealing material with the quantity of an external electric signal and accordingly adjusts the contact face pressure to enable controlling the amount of leakage of the fluid highly precisely, so that it can be used for all applications. The shaft sealing device includes a shaft sealing body formed of a macromolecular material and made expansible or contractible, or deformable, through external electrostimuli applied to a shaft sealing portion disposed in a device body, and flow passages disposed in the shaft sealing portion for feeding the fluid leaked due to the expansion or contraction, or the deformation, of the shaft sealing body.
    Type: Application
    Filed: September 25, 2013
    Publication date: January 16, 2014
    Applicant: KITZ CORPORATION
    Inventors: Kazuhiro AOKI, Tomoya YAMASAKI, Chikashi GOMI
  • Patent number: 8545192
    Abstract: A diesel pump having enhanced durability in a high pressure environment, capable of being produced at high productivity, and at low cost. The diesel pump is provided with a cylinder formed in a pump housing, a plunger reciprocatably provided in the cylinder, and a drive mechanism for driving the plunger. The cylinder is a separate part from the pump housing and is mounted in the pump housing. The cylinder consists of sulfur-less alloy steel, is a tubular part and may be press-fitted in the pump housing. The front end of an outlet joint reaches the cylinder, and a fuel discharge route directly connects to the outlet joint from the cylinder without passing through the pump housing.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: October 1, 2013
    Assignee: Koganei Seiki Co., Ltd.
    Inventor: Masaharu Tsuboi
  • Publication number: 20130180397
    Abstract: A hydraulic device includes a body, a piston rod configured to be actuated by a pressurised hydraulic fluid, and a first drainage channel for externally draining an internal leakage of hydraulic fluid in the device. The device includes a second drainage channel for externally draining the internal leakage of hydraulic fluid in the device, the first and second channels being oriented in two different directions and each of the channels communicating at one of the ends thereof inside the body of the device.
    Type: Application
    Filed: September 22, 2011
    Publication date: July 18, 2013
    Applicant: SNECMA
    Inventors: Frédéric Brettes, Alain François Jean Lavie
  • Patent number: 8485795
    Abstract: A diesel pump having enhanced durability in a high pressure environment, capable of being produced at high productivity, and at low cost. The diesel pump is provided with a cylinder formed in a pump housing, a plunger reciprocatably provided in the cylinder, and a drive mechanism for driving the plunger. The cylinder is a separate part from the pump housing and is mounted in the pump housing. The cylinder consists of sulfur-less alloy steel, is a tubular part and may be press-fitted in the pump housing. The front end of an outlet joint reaches the cylinder, and a fuel discharge route directly connects to the outlet joint from the cylinder without passing through the pump housing.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: July 16, 2013
    Assignee: Koganei Seiki Co., Ltd.
    Inventor: Masaharu Tsuboi
  • Patent number: 8413621
    Abstract: A hydraulic assembly (5) for a cylinder head (2) of an internal combustion engine having a hydraulically variable valve train (1) is provided. A high pressure chamber (11), a medium pressure chamber (12) and a low pressure chamber (16), which serves as a hydraulic medium reservoir, are configured in the hydraulic assembly. The low pressure chamber communicates through a throttling point (17) with the medium pressure chamber, which throttling point is formed by a displaceable valve body (19) and, depending on the position of the valve body, provides flow cross-sections of different sizes in order to minimize the leakage out of the hydraulic assembly.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: April 9, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Andreas Rinnert
  • Patent number: 8348644
    Abstract: A pump includes a cylinder and a plunger. The cylinder defines an outlet-side passage therein. The plunger is reciprocably received within the cylinder. An inner peripheral surface of the cylinder and an end surface of the plunger define a pump chamber. The outlet-side passage is communicated with the pump chamber. When the plunger reciprocates within the cylinder, fluid inside the pump chamber is pressurized such that fluid is discharged to an exterior through the outlet-side passage. The inner peripheral surface includes a spherical surface part that surrounds the pump chamber. The spherical surface part is defined by a curved surface having a predetermined curvature such that the pump chamber defines a spherical space. The spherical surface part is provided with an opening of the outlet-side passage, which has a circular shape when observed from a spherical center of the pump chamber.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: January 8, 2013
    Assignee: Denso Corporation
    Inventor: Shinya Tsutsumidani
  • Publication number: 20120325082
    Abstract: A fluid cylinder mechanism (1) equipped with a cylinder (10) having a base end (12) and an open end (11), and a piston (20) having a flange portion (21) disposed inside the cylinder and a rod portion (25) that passes through the open end of the cylinder, in which a space inside the cylinder is partitioned by the flange portion of the piston into a first pressured chamber (14) on a side of the base end and a second pressurized chamber (15) on a side of the open end, is characterized by including: a first flow path (22) that permits flow of a fluid from the first pressurized chamber to the second pressurized chamber; a second flow path (32) that permits flow of the fluid from the second pressurized chamber to the first pressurized chamber; and an opening and closing means (35) for opening and closing the second flow path.
    Type: Application
    Filed: June 21, 2011
    Publication date: December 27, 2012
    Applicants: BARNES GROUP INC., HONDA MOTOR CO., LTD.
    Inventors: Kaoru Hirotani, Darrell Quander, Steven Reilly
  • Patent number: 8317487
    Abstract: The respective spaces for forming gas passages on the suction side formed on the front and rear side cylinder blocks are assembled together to configure a gas passage on the suction side, and the respective spaces for providing gas passages on the discharge side are connected with each other to configure a gas passage on the discharge side. A gas port leading to the suction side space is provided on one of both cylinder blocks, and a gas port leading to the discharge side space is arranged on the other. A circumferential width of the space for forming a gas passage communicating with the gas port is made larger than a circumferential width of a space for forming a gas passage not communicating with the gas port in the respective cylinder block. Partition walls are contacted with each other in the axial direction when both cylinder blocks are assembled.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: November 27, 2012
    Assignee: Valeo Japan Co., Ltd.
    Inventors: Ryoma Suzuki, Ryosuke Izawa
  • Patent number: 8220381
    Abstract: The invention concerns a combined piston-expander compressor comprising a plurality of pistons (3, 14) which are mechanically coupled together by a piston rod (4), as well as a main slide (6), an auxiliary slide (7) and a control valve (9) for control purposes, characterized in that the main slide (6) is formed from a plurality of slide elements that are not interconnected, two outer slide bodies (6a, 6b) being provided. Control pistons (6c) with control edges and simple slide elements (6d) are arranged in a row between the outer slide elements, in the form of a small piston (6a) and a large piston (6b), such that a differential pressure acting on the outer slide elements (6a, 6b) automatically and mechanically holds together the main slide (6).
    Type: Grant
    Filed: October 29, 2005
    Date of Patent: July 17, 2012
    Assignee: Technische Universität Dresden
    Inventor: Jörg Nickl
  • Patent number: 8215271
    Abstract: A hydraulic unit (5) is provided for a cylinder head (2) of an internal combustion engine with a hydraulically variable valve train (1). In the hydraulic unit, a high-pressure chamber (11), a medium-pressure chamber (12), and a low-pressure chamber (16) used as the hydraulic medium reservoir are formed. The low-pressure chamber communicates via a throttle point (17, 17?, 17?, 17??) with the medium-pressure chamber, and the throttle point is formed by a displaceable valve body (19, 19?, 19?, 19??) and has through-flow cross sections of different sizes according to a position of the valve body.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: July 10, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Mario Kuhl, Lothar von Schimonsky, Thomas Kremer, Calin Petru Itoafa, Jens Lang, Andreas Eichenberg
  • Patent number: 8210140
    Abstract: A hydraulic unit (5) is provided for a cylinder head (2) of an internal combustion engine with a hydraulically variable gas-exchange valve train (1). In the hydraulic unit, a high-pressure chamber (11), a medium-pressure chamber (12), and a low-pressure chamber (16) used as the hydraulic medium reservoir are formed. The low-pressure chamber communicates via a throttle opening (17, 17?, 17?, 17??) with the medium-pressure chamber, and the throttle opening extends through a housing seal (23) produced as a separate component.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: July 3, 2012
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Mario Kuhl, Andreas Eichenberg
  • Publication number: 20120160090
    Abstract: An air cylinder that can prevent foreign substances from intruding inside in an environment where fine foreign substances such as dust are scattered. The air cylinder includes, in a through hole of a rod cover, an annular lubricator impregnated with a lubricant so as to supply the lubricant to the rod and a liquid-absorptive annular dust wiper not containing a lubricant and provided for preventing fine foreign substances such as powder stuck to the rod from intruding inside. The lubricator and the dust wiper are disposed air-tightly and slidably in contact with the rod, and the dust wiper is located closer to a leading end of the rod than the lubricator.
    Type: Application
    Filed: March 9, 2010
    Publication date: June 28, 2012
    Applicant: SMC CORPORATION
    Inventors: Akiyoshi Kato, Naoki Shinjo
  • Publication number: 20120118139
    Abstract: The invention relates to a dual-chamber carpule having a first partial cylinder comprising a sealing cap, a bypass, and an intermediate stopper, an optional sealing element, and a second partial cylinder comprising an end stopper and, optionally, a stop, an axial groove, and an additional intermediate stopper; the invention further relates to a method for producing and filling said dual-chamber carpule.
    Type: Application
    Filed: December 9, 2011
    Publication date: May 17, 2012
    Applicant: SANOFI-AVENTIS DEUTSCHLAND GMBH
    Inventors: Werner SEIFERLEIN, Jörn Möckel, Martin ZINK
  • Publication number: 20120042775
    Abstract: A master cylinder assembly includes a cylinder body, a piston member operably fitted therein, and a pressure valve assembly to establish a variable fluid output upon operation of the piston member. The cylinder body includes two or more pressure chambers to hold hydraulic fluid, each having a transfer port. The piston member includes two or more pistons respectively received in the pressure chambers, and is operable to move the pistons, in parallel, to transfer hydraulic fluid through the transfer ports. The pressure valve assembly includes a selector and is operable to direct fluid transferred through selected transfer ports out of the cylinder body through an outlet port by means of a movable valve member that establishes a passageway communicating the selected transfer ports with the outlet port. A pivot adjustment mechanism allows adjustment of the lever's mechanical advantage, and a stroke adjustment mechanism allows adjustment of the lever's rest position.
    Type: Application
    Filed: August 23, 2010
    Publication date: February 23, 2012
    Inventor: Ryan Lind
  • Publication number: 20120017758
    Abstract: A pressure cylinder includes a first cylinder body having accommodated therein a piston. a second cylinder body defining therein a first passage vertically connected to the first cylinder body, an oil storage chamber vertically connected to the first passage, a second passage vertically connected to the oil storage chamber and a pressure chamber vertically connected to the second passage and having a cross-sectional area smaller than the oil storage chamber, and a piston rod inserted through the first passage of the second cylinder body in an airtight manner and having its one end connected to the piston and its other end movable by the piston between a first position in the oil storage chamber and a second position in the pressure chamber to add a pressure to the hydraulic oil in the pressure chamber and to let the hydraulic oil in the oil storage chamber be supplied to the pressure chamber to make up any hydraulic oil loss, maintaining the output.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 26, 2012
    Applicant: CHANTO AIR HYDRAULICS CO., LTD.
    Inventor: Tsai-Chao WU
  • Patent number: 8082838
    Abstract: A double-acting cylinder and piston mechanism comprising a cylinder (1) substantially closed at both ends by front (5) and rear (7) end walls, a piston (8) axially displaceable within the cylinder (1), a first region (6) defined between the piston (8) and the rear end wall (7) of the cylinder (1) and a second region (4) defined between the piston (8) and the front end wall (5) of the cylinder (1), a piston rod (2) extending from the piston (8) through the front end wall (5) of the cylinder (1), an air inlet port (19) for communication with said first region (6) of the cylinder (1) and at least one exhaust vent (14) which is exposed during axial displacement of the piston (8) for release of air delivered to the cylinder (1) through the air inlet port (19).
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: December 27, 2011
    Assignee: Oseney Limited
    Inventors: Diarmuid Meagher, Anthony Bligh, Maurice Moynihan
  • Publication number: 20110239857
    Abstract: According to one embodiment, there is provide a piston pump, including: a cylinder having a bottomed cylindrical shape; a piston slidable within the cylinder, the cylinder and the piston defining a pressure chamber therebetween; a suction valve unit disposed in a suction passage of the pressure chamber; and a discharge valve unit disposed in a discharge passage of the pressure chamber, wherein the piston includes a cylindrical piston portion and a large diameter piston portion provided to cover one end of the cylindrical piston portion, and wherein the large diameter piston portion includes a working fluid guide groove extending thereinside along the axial direction of the piston.
    Type: Application
    Filed: March 28, 2011
    Publication date: October 6, 2011
    Applicant: NISSIN KOGYO CO., LTD.
    Inventor: Masatoshi IYATANI
  • Publication number: 20110232599
    Abstract: A two stroke engine of a particular configuration can have its power output increased by running bigger pistons and using ports in the piston skirt through which to conduct compressed air within the skirt through short passages in the cylinder housing that conduct the air from within the skirt to above the piston. As a result a larger piston can be used for the same spacing and opening size in the block to save the need to redesign the block and the crankshaft. A position adjuster for the piston moves it axially without rotation of the piston ports out of alignment with inlet ports in the housing. The piston rod is held in the crosshead using a flat to prevent rotation while an adjuster nut that is turned creates axial movement in the piston rod with a lock nut securing the final piston position.
    Type: Application
    Filed: June 9, 2011
    Publication date: September 29, 2011
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Bruce M. Chrisman, Randy Coleman
  • Patent number: 8025006
    Abstract: A hydraulic cylinder unit comprises a cylinder, a piston disposed within the cylinder, and piston rod connected to the piston. The piston rod is reciprocatingly received within the cylinder, and the piston rod being movable between a first position in which the piston rod is substantially disposed within the cylinder and a second position in which the piston rod is fully extended outside the cylinder. A first hydraulic port and a second hydraulic port hydraulically connecting the cylinder unit to a reservoir. Hydraulic fluid is received by the first hydraulic port and hydraulic fluid is discharged by the second port when the piston rod is actuated to move towards the first position. Hydraulic fluid is received by the second hydraulic port and hydraulic fluid is discharged by the first hydraulic port when the piston rod is actuated to move towards the second position.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: September 27, 2011
    Assignee: Teleflex Canada Inc.
    Inventor: Davor Baros
  • Publication number: 20110226342
    Abstract: A fluid working machine comprises a controller (12) and a working chamber (2) of cyclically varying volume. The working, chamber has both an electronically controllable primary low pressure valve (14) and a secondary low pressure port (22) associated therewith, each of which is openable and closable in phased relation to cycles of working chamber volume to bring the working chamber into fluid communication with a low pressure manifold (16, 26). At least the primary low pressure valve is under the active control of the controller to enable the controller to determine the net displacement of fluid by the working chamber on a cycle by cycle basis. The primary low pressure valve and the secondary low pressure port are openable concurrently during a portion of at least some cycles of working chamber volume to enable fluid to flow into or out of the working chamber concurrently through both the primary low pressure valve and the secondary low pressure port.
    Type: Application
    Filed: June 22, 2009
    Publication date: September 22, 2011
    Applicants: ARTEMIS INTELLIGENT POWER LIMITED, SAUER-DANFOSS ApS
    Inventors: Uwe Bernhard Pascal Stein, Niall James Caldwell
  • Publication number: 20110220054
    Abstract: A fluid flow valve in a cylinder head comprises a first valve end and an axially disposed second shaft end connected by a valve shaft. A first valve member is located at the first valve end and a second valve member is located axially from, and in fixed relationship to, the first valve member along the valve shaft. A valve support extends axially between and connects the first valve member and the second valve member; the valve support including an axially extending wall portion having circumferentially spaced support struts extending radially between the valve shaft and the wall portion. Fluid flow passages extend axially through the wall portion, between the circumferentially spaced support struts, wherein fluid flows simultaneously about the exterior of the wall portion and through the fluid flow passages in the wall portion when the valve member is biased to an open position.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 15, 2011
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventor: John R. Bucknell
  • Patent number: 8015913
    Abstract: A pneumatic cylinder designed to convert compressed air into mechanical output is disclosed. The pneumatic cylinder includes a piston and rod assembly with supporting components coaxially disposed and arranged to achieve a linear mechanical force in accordance with a differential pressure across the piston. A cylindrical sleeve, secured to end caps on both openings, encircles the piston and rod assembly and helps guide the piston during travel. A conductive coil is coupled to the cylindrical sleeve to provide sensing of a position of the piston. Additionally, a manifold, which serves as a conduit for airflow between each individual cylinder volume and an external air control device, is disposed such that the cylindrical sleeve and end caps are nested, in a concentric manner, within the manifold. A manifold divider assembly is disposed such that a plurality of end channels are isolated from each other.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: September 13, 2011
    Assignee: Sunstream Scientific, Inc.
    Inventor: Michael K. Kriegsmann
  • Patent number: 7971520
    Abstract: A fluid power arrangement includes a valve means and a fluid power implement, which is connected or is able to be connected with the valve means by way of a first fluid line a and at least one second fluid line for fluid actuation through the valve means (13a and 13b), the valve means and the implement constituting spatially separate assembly units, the valve means having a first valve fluid port for the first fluid line and at least one second valve fluid port for the at least one second fluid line and the implement having a first implement fluid port for the first fluid line and at least one second implement fluid port for the at least one second fluid line.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: July 5, 2011
    Assignee: Festo AG & Co. KG
    Inventor: Gerhard Nölle
  • Publication number: 20110138998
    Abstract: A two stroke engine of a particular configuration can have its power output increased by running bigger pistons and using ports in the piston skirt through which to conduct compressed air within the skirt through short passages in the cylinder housing that conduct the air from within the skirt to above the piston. As a result a larger piston can be used for the same spacing and opening size in the block to save the need to redesign the block and the crankshaft. A position adjuster for the piston moves it axially without rotation of the piston ports out of alignment with inlet ports in the housing. The piston rod is held in the crosshead using a flat to prevent rotation while an adjuster nut that is turned creates axial movement in the piston rod with a lock nut securing the final piston position.
    Type: Application
    Filed: February 24, 2011
    Publication date: June 16, 2011
    Applicant: Cameron International Corporation
    Inventors: Bruce M. Chrisman, Randy Coleman
  • Publication number: 20110079141
    Abstract: A hydraulic cylinder with piston and rod enclosed, that upon receiving air and oil, singularly or along with one or more identical cylinders, from a new, dry, system start up, will, upon extension, when the piston seal passes a predetermined point, stop. With continued pumping from either a manual single or multiple cylinder pump or an electric pump all the identical piston rods will arrive at the predetermined stop and the cylinders will be purged of air and when the manual locks are placed over the extended piston rods, they will stay there and not move up or down, regardless of ambient temperature changes or inadvertent release of the oil. After they are extended the first time all the cylinders will stop at the predetermined point in an even position with each other. The locks and pumps are not shown in this application.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 7, 2011
    Inventors: Mathew Steury, Edwin Steury
  • Publication number: 20110072962
    Abstract: A self-bleeding hydraulic cylinder system is provided. The system includes a hydraulic cylinder with an inner wall and an outer wall. A cylinder port is located in a top region of the hydraulic cylinder. A line port is located in a bottom region of the hydraulic cylinder. A sleeve covers at least a portion of the outer wall of the hydraulic cylinder, and a channel is formed between the sleeve and the outer wall of the hydraulic cylinder. The channel extends from the cylinder port to the line port such that air within the hydraulic cylinder is pushed through the cylinder port and through the channel to the line port in response to actuation of the hydraulic cylinder.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Applicant: Control Solutions, LLC
    Inventor: Nicholas J. Scholtes
  • Publication number: 20100326268
    Abstract: A method and apparatus for stabilizing a piece of equipment, especially a wind turbine blade when removed from a wind turbine tower, the method and apparatus including a stabilizer bag placed on the ground, having one or more interior inflatable cavities surrounded by a durable exterior membrane having welded seams and at least one valve for purposes of inflation and deflation.
    Type: Application
    Filed: June 23, 2010
    Publication date: December 30, 2010
    Inventor: BRENT DAVIS
  • Patent number: 7819107
    Abstract: A pumping element for pressurizing a fluid within a fluid pump includes a plunger reciprocally disposed within a bore defined in a barrel. The plunger and barrel at least partially define a pressurization chamber into which fluid is pressurized. A flow path is defined between the plunger and the bore, the flow path permitting fluid to pass from the pressurization chamber during pressurization of fluid disposed therein. A collection chamber is formed between the plunger and the bore, the collection chamber being disposed adjacent to the bore and being part of a cooling circuit for the pumping element. A plurality of weep openings is defined in the barrel and is fluidly connected to the collection chamber. A reduced diameter portion of the barrel forms an annular reservoir that receives fluid from the weep openings.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: October 26, 2010
    Assignee: Caterpillar Inc
    Inventors: Alan R. Stockner, Scott F. Shafer
  • Patent number: 7810618
    Abstract: The invention relates to a vibration generator comprising a working piston and to a construction apparatus having a vibration generator, wherein the vibration generator is operated by a pressure fluid and comprises a control device having a control piston, which is supported in a displaceable manner inside the working piston.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: October 12, 2010
    Assignee: Klemm Bohrtechnik
    Inventors: Hans-Jürgen Weber, Carl Hagemeyer
  • Patent number: 7726231
    Abstract: A lightweight, inexpensive, corrosion proof, utility pump having a flexible member forming a sliding interference fit with a pump rod with the flexible member confined between a pump rod bushing and an end cap to prevent leakage and a method of converting an inexpensive utility pump from a leaking condition to a non leaking condition without having to modify the existing components of the utility pump.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: June 1, 2010
    Inventors: Aaron L. Eaton, Lloyd Herbert King, Jr.
  • Patent number: 7685929
    Abstract: The present invention provides a telescopic hoist comprising a series of telescopically arranged tubular sections wherein the tubular sections are made in nitrided steel.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: March 30, 2010
    Assignee: Industries Mailhot Inc.
    Inventor: Luc Mainville
  • Patent number: 7654189
    Abstract: A cylinder for a piston-cylinder assembly comprises an extruded stainless steel cylinder body and stainless steel end caps mounted to opposite ends of the body. A unique configuration of three seals is used to seal each end cap to the cylinder body.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: February 2, 2010
    Assignee: Parker-Hannifin Corporation
    Inventors: Bruce E. Kohlmeyer, Stanley Paul Evans, Jr.
  • Publication number: 20090293715
    Abstract: A hydraulic cylinder for a brake system includes a cylindrical body and a piston. The cylindrical body has a receiving space longitudinally defined therein for movably and sealingly receiving the piston. The receiving space is divided into a first chamber and a second chamber diametrically smaller than the first chamber. The piston has a first portion and a second portion. The first portion and the second portion sealingly and movably abut against the first chamber and the second chamber respectively. In a speed reduction stage the first portion interacts with the first chamber, and in an emergency brake stage the first portion and the second portion interact with the first chamber and the second chamber respectively for providing a greater braking force than in the speed reduction stage.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 3, 2009
    Inventor: Wayne-Ian MOORE
  • Publication number: 20090236390
    Abstract: Described herein are endoscopic staplers used to apply one or more fasteners to body tissue. In one embodiment, a fastener-applying device, which is preferably a stapler, is passed transorally into the stomach and used to plicate stomach tissue by engaging tissue from inside of the stomach and drawing it inwardly. In the disclosed embodiments, the tissue is drawn inwardly into a vacuum chamber, causing sections of serosal tissue on the exterior of the stomach to be positioned facing one another. The disclosed staplers allow the opposed sections of tissue to be moved into contact with one another, and preferably deliver staples for maintaining contact between the tissue sections at least until serosal bonds form between them. Each of these steps may be performed wholly from the inside of the stomach and thus can eliminate the need for any surgical or laparoscopic intervention.
    Type: Application
    Filed: March 21, 2008
    Publication date: September 24, 2009
    Inventors: DAVID COLE, Andrew Smith
  • Publication number: 20090199707
    Abstract: A hydraulic working cylinder of a steering system for a motor vehicle, wherein a piston having a piston rod is displaceably disposed in the working cylinder and the working cylinder has a working chamber into which leads at least one line connection for supply and discharge of pressurized medium. A ring is disposed in the working chamber, and a groove is provided in an inner wall of the working cylinder and is in communication with the line connection. The groove extends from the line connection to an upper region of the working chamber, and the ring closes off the groove relative to the working chamber with the exception of an upper region of the groove that is disposed adjacent to the upper region of the working chamber.
    Type: Application
    Filed: March 14, 2007
    Publication date: August 13, 2009
    Inventor: Roger Kollmeier
  • Publication number: 20090149091
    Abstract: A hydraulic cylinder unit comprises a cylinder, a piston disposed within the cylinder, and piston rod connected to the piston. The piston rod is reciprocatingly received within the cylinder, and the piston rod being movable between a first position in which the piston rod is substantially disposed within the cylinder and a second position in which the piston rod is fully extended outside the cylinder. A first hydraulic port and a second hydraulic port hydraulically connecting the cylinder unit to a reservoir. Hydraulic fluid is received by the first hydraulic port and hydraulic fluid is discharged by the second port when the piston rod is actuated to move towards the first position. Hydraulic fluid is received by the second hydraulic port and hydraulic fluid is discharged by the first hydraulic port when the piston rod is actuated to move towards the second position.
    Type: Application
    Filed: December 6, 2007
    Publication date: June 11, 2009
    Inventor: Davor Baros
  • Publication number: 20090116974
    Abstract: The present invention relates to a compressor, which can inhale refrigerant supplied to a swash plate chamber to cylinder bores through the inside of a driving shaft so that a flow channel structure is simplified, thereby enhancing a suction volumetric efficiency by reducing a loss due to flow channel resistance and elastic resistance, and enhancing a compression efficiency by uniformly distributing refrigerant to the cylinder bores located at both sides of the swash plate chamber.
    Type: Application
    Filed: August 11, 2006
    Publication date: May 7, 2009
    Inventors: Kweonsoo Lim, Mingyu Kim, Jeongjee Lee, Duckbin Yoon
  • Patent number: 7509906
    Abstract: The present invention provides an off-chip apparatus and a method for driving micro fluid wherein one or a plurality of impedance members, plunger positioning members and pressure difference design are used to drive the fluid and control the flow speed in a microfluidic system. The present invention also provides a method for driving fluid and controlling flow speed, wherein a slow pressure balancing mechanism is produced by the foregoing device so the flow speed of fluid can be controlled.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: March 31, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Bi Chu Wu, Gin Shu Young, Chung Kai Chen, Yu Ching Liu, Su Jan Lee
  • Publication number: 20080307956
    Abstract: A hydraulic unit that uses first and second support structures to eliminate the use of webs within an arcuate inlet and outlet of a valve plate. Specifically, a valve plate body extends between an inner and outer diameter wherein the outer diameter in a first position is placed in close proximity to a first support structure and the inner diameter is placed in close proximity to a second support structure. Thus, stress of hydraulic fluid flowing through the arcuate inlet or outlet deflects the inner and outer diameters causing them to engage the first and second support structures such that stress is passed to the first and second support structures and the valve plate is stiffened.
    Type: Application
    Filed: June 18, 2007
    Publication date: December 18, 2008
    Applicant: SAUER-DANFOSS INC.
    Inventor: Joseph Wright
  • Patent number: 7404353
    Abstract: A pneumatic cylinder designed to convert compressed air into mechanical output is disclosed. The pneumatic cylinder includes a piston and rod assembly with supporting components coaxially disposed and arranged to achieve a linear mechanical force in accordance with a differential pressure across the piston. A cylindrical sleeve, secured to end caps on both openings, encircles the piston and rod assembly and helps guide the piston during travel. Additionally, a manifold, which serves as a conduit for airflow between each individual cylinder volume and an external air control device, is disposed such that the cylindrical sleeve and end caps are nested, in a concentric manner, within the manifold. This arrangement results in a dynamic relationship between airflow and differential pressure that is conducive to precision force and motion control.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: July 29, 2008
    Assignee: Sunstream Scientific, Inc.
    Inventor: Michael K. Kriegsmann
  • Publication number: 20080127817
    Abstract: A cylinder body includes a first guide surface made up from first guide grooves and a first bulging portion, wherein a slide table is displaceably supported on the first guide surface via a guide mechanism. Additionally, guide members of a guide block that constitutes the guide mechanism are inserted into and fixed within the first guide grooves. Further, the cylinder body is equipped with a second guide surface, which is formed with substantially the same shape as the first guide surface. In the event that the first guide surface is oriented upwardly and the slide table is installed thereon, the second guide surface acts as a mounting surface, whereas, in the event that the second guide surface is oriented upwardly and the slide table is installed thereon, the first guide surface acts as the mounting surface.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 5, 2008
    Applicant: SMC KABUSHIKI KAISHA
    Inventors: Mitsuhiro Someya, Masayuki Hosono, Kouichirou Kanda, Yoshihiro Toshimori
  • Patent number: 7374406
    Abstract: A method and system is provided for reducing chatter in multi-capacity compressors having disengageable eccentric structures. The multi-capacity fluid compressor includes a compression chamber having a discharge end and an inner surface. The compressor also includes a compression member having a disengageable eccentric structure allowing the compressor to provide discrete compression capacities. A valve portion is disposed adjacent to the discharge end of the compression chamber and is arranged and disposed to discharge a compressed fluid when the compression member has completed. A discharge arrangement is arranged and disposed to discharge at least a portion of fluid remaining in the compression chamber at the completion of the compression cycle. The discharge of at least a portion of the fluid remaining in the compression chamber reduces or eliminates forces on the disengageable eccentric structure to limit rotational acceleration of the disengageable eccentric structure.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: May 20, 2008
    Assignee: Bristol Compressors, Inc.
    Inventors: Bruce Moody, Tyrone Scott Simerly, Mark Trent, David Turner Monk, Scott Garrison Hix
  • Publication number: 20080110332
    Abstract: An oil supply structure for reducing friction of a cam shaft attached to a valve train of an automotive engine is disclosed. An oil supply hole formed in a cam shaft is, repeatedly connected and disconnected to a cylinder head oil supply hole during the rotation of the cam shaft. An oil pocket is established in the form of a concave groove in a section in the circumferential direction on an inner circumferential surface of a cam cap assembled on the top of the cam shaft so as to supply oil to the oil pocket only when the cylinder head oil supply hole is connected to the cam shaft oil supply hole. It is thus possible to supply oil to the oil pocket through the cam shaft oil supply hole at specific points of time and, simultaneously, to sufficiently ensure the sealing width in other regions than the oil pocket, thus reducing oil loss and obtaining a more efficient friction reduction.
    Type: Application
    Filed: December 29, 2006
    Publication date: May 15, 2008
    Inventor: Jea Woong Yi
  • Publication number: 20080098883
    Abstract: A reciprocating pump (10) for pumping seawater or other fluid under high-pressure. The pump (10) has a pump body (11) defining an internal space (13) and an opening (18) onto the internal space. A plunger (25) extends through the opening (18) and into the internal space (13). A sheath (30) closes the opening (18) and embraces an inner portion of the plunger (25), whereby pumping chamber (33) is defined between the pump body (11) and the sheath (30). The sheath (30) is deformable in response to reciprocatory movement of the plunger (25) to effect volume change within the pumping chamber (33). The sheath (30) comprises a first portion (31) which is generally stable, and a second portion (32) which embraces the plunger (25) and which deforms through expansion and contraction upon reciprocatory movement of the plunger. The first portion (31) defines a mounting flange (35) clampingly engaged with the pump body (11). The sheath (30) incorporates a recess (45) adjacent the open end thereof.
    Type: Application
    Filed: May 16, 2005
    Publication date: May 1, 2008
    Applicant: Seapower Pacific Pty Ltd
    Inventor: Alan Robert Burns
  • Patent number: 7353748
    Abstract: A bent section, which is bent substantially perpendicularly toward a main cylinder body, is formed at one end of a slide table. Further, a pair of ball-rolling grooves, in which a plurality of ball bearings roll, are formed on side surfaces of the slide table opposed to a guide section. A relief groove, which has a width wider than a spacing distance between the ball-rolling grooves and which makes it possible to change the direction of a processing jig when the ball-rolling grooves are processed, is formed at ends of the ball-rolling grooves disposed on a side of the bent section.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: April 8, 2008
    Assignee: SMC Kabushiki Kaisha
    Inventors: Toshio Sato, Akira Tadano, Gen Tsuchiya