Cylinder Detail Patents (Class 92/169.1)
  • Patent number: 10539092
    Abstract: An internal combustion engine with at least one cylinder having a cylinder barrel that forms a guide for a piston associated with the cylinder. The cylinder barrel is only partially formed by a cylinder wall of a crankcase or of a cylinder liner fastened to the crankcase. The cylinder barrel, in a central region as seen in the cylinder axial direction, is formed by the cylinder wall. The cylinder wall, in an upper region of the cylinder barrel adjoining the central region and/or in a lower region adjoining the central region, has an encompassing recess into which is inserted a one-piece or multi-piece annular sliding element, the radially inner wall of which forms a part of the cylinder barrel.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: January 21, 2020
    Assignee: MAN Truck & Bus AG
    Inventors: Peter Scharf, Stefan Schmidt
  • Patent number: 10279790
    Abstract: A master brake cylinder arrangement for a hydraulic motor vehicle brake system, comprising a master brake cylinder housing with a cylindrical recess and at least one substantially annular groove which is oriented transversally to a longitudinal axis of the cylindrical recess and which is axially delimited by a protruding housing portion. The master brake cylinder arrangement also comprises at least one pressure piston which can be displaced axially in the cylindrical recess of the master brake cylinder housing and which is guided in a sealed manner by means of at least one seal element arranged in the groove. The housing portion has an edge portion which faces the seal element and an edge portion which faces away from the seal element when viewed in the axis-containing longitudinal section.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: May 7, 2019
    Assignee: Lucas Automotive GmbH
    Inventors: Matthias Wolf, Martin Struschka
  • Patent number: 10267258
    Abstract: Methods of honing a surface are disclosed. The method may include spraying a coating having an initial average bulk porosity onto an engine bore wall and honing the coating to create an intermediate honed surface. The method may then include cleaning the intermediate honed surface and honing the intermediate honed surface with a cutting force of, for example, 110-130 kgf after the cleaning step. This may create a honed surface having an average porosity greater than the initial average bulk porosity. The methods may create a honed surface having a porosity that is more porous than the initially sprayed coating. The increased porosity of the honed surface may allow for increased oil retention in, for example, engine bores.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: April 23, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Clifford E. Maki, Timothy George Beyer, Arup Kumar Gangopadhyay, Hamed Ghaednia, Larry Dean Elie, James Maurice Boileau
  • Patent number: 10247128
    Abstract: A cylinder for a V-twin engine includes a section of steel tubing cut to a length. The section of steel tubing includes a first portion having a first wall thickness and a second portion having a second wall thickness less than the first wall thickness. The second wall thickness is less than 0.050 inch. The section of steel tubing includes a first ribbing pattern on an outer surface, within the first portion, and a second ribbing pattern including multiple ribs formed on individual ribs of the first ribbing pattern. A cast body is provided on the first portion of the section of steel tubing so that the section of steel tubing is fixedly secured within the body to form a cylinder sleeve defining a cylinder bore. The second portion having the second wall thickness extends from an end of the body to be received within a bore of a crankcase.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: April 2, 2019
    Assignee: Harley-Davidson Motor Company Group, LLC
    Inventors: Tony Nicosia, Brad Bishop, Mark Dane
  • Patent number: 10214803
    Abstract: A method for machining a wall of a cylinder of an internal combustion engine, in which recesses in the wall are introduced by mechanical machining. The invention is characterized in that the wall is radiated with a medium under high pressure after the mechanical machining in order to introduce micro-recesses.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: February 26, 2019
    Inventors: Alois Bauer, Wolfram Wagener, Patrick Woisetschlaeger
  • Patent number: 9903007
    Abstract: The present invention provides a hypereutectic aluminum-silicon alloy die-cast member which contains 20.0% by mass to 30.0% by mass of silicon and also has a thickness of 2.5 mm or less, and a method for producing the same. Disclosed is a die-cast member made of a hypereutectic aluminum-silicon alloy containing 20.0% by mass to 30.0% by mass of silicon, wherein the die-cast member has a thickness of 2.5 mm or less and an average size of primary crystal Si is 0.04 mm to 0.20 mm.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: February 27, 2018
    Inventors: Toshio Haga, Hiroshi Fuse
  • Patent number: 9890779
    Abstract: A linear compressor is provided. The linear compressor may include a shell including a suction inlet, a cylinder provided in the shell to define a compression space for a refrigerant, a piston reciprocated in an axial direction within the cylinder, a discharge valve provided at one side of the cylinder to selectively discharge the refrigerant compressed in the compression space, and at least one nozzle, through which at least a portion of the refrigerant discharged through the discharge valve may flow, the at least one nozzle being disposed in the cylinder. The at least one nozzle may include an inlet, through which the refrigerant may be introduced, and an outlet having a diameter less than a diameter of the inlet.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: February 13, 2018
    Inventors: Kwangwoon Ahn, Donghan Kim, Seongho Ha
  • Patent number: 9488126
    Abstract: A method for producing a cylinder liner surface for a cylinder crankcase of an internal combustion engine has the following method steps: (a) preliminary honing of the inner surface of a cylinder liner consisting of a cast iron material to form depressions in the surface; (b) application of a coating material containing zinc to the honed surface; (c) final honing of the coated surface in such a way that the coating material containing zinc remains only in the depressions formed by the preliminary honing.
    Type: Grant
    Filed: July 4, 2012
    Date of Patent: November 8, 2016
    Assignee: MAHLE International GmbH
    Inventors: Ulrich Bischofberger, Stefan Gaiselmann
  • Patent number: 9341179
    Abstract: The current application discloses various embodiments where a portion of a fluid end pump body is made of a first material the other parts of the pump body are made of a second material where the first material is a material having better resistance to fatigue and the second material used is a material of less quality and cheaper than the first material.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: May 17, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Brian Ochoa, Philippe Gambier, Aude Faugere, Christopher Shen, Joe Hubenschmidt, Tze Wei Chua, Walter Taylor
  • Patent number: 9249798
    Abstract: A multi-step autofrettage process for pre-treating a multi-cylinder reciprocating pump fluid end that has a central cylinder and at least two side cylinders is provided that includes autofrettaging the central cylinder; and autofrettaging the at least two side cylinders, wherein the autofrettaging of the central cylinder is performed independently of the autofettaging of the at least two side cylinders.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: February 2, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Partha Ganguly, Jahir Pabon, Joe Hubenschmidt, Nathan St. Michel, Rod Shampine
  • Publication number: 20150143992
    Abstract: A vacuum-operated brake booster includes a housing which consists of a bottom and a cover having an intermediate piston through which tubes, through which attachment screws are to pass, extend. The front end of the tube is threaded, and a peripheral groove is provided behind the thread, a flange being crimped in the groove behind the cover in the housing. The master cylinder is attached via the lugs thereof, which are fitted into the front end of the tube against the front surface of the cover and locked by the nut screwed onto the thread. The front end of the tube has a peripheral groove receiving the flange that consists of a ring and a sleeve, the lip of which penetrates into the groove by crimping. A gasket completes the seal.
    Type: Application
    Filed: May 22, 2013
    Publication date: May 28, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Joan Simon Bacardit, Bruno Berthomieu
  • Publication number: 20150135943
    Abstract: A cylinder block (1) for a compressor has a central opening (3) for accommodating a drive shaft of a drive unit and defines a central axis of the cylinder block (1) with a plurality of cylinder bores (2) arranged around the central opening and each of the cylinder bores (2) adapted for accommodating a piston (14).The cylinder block (1) also has at least one stop (10) on a drive side of the cylinder block (1) with the stop (10) arranged within a triangular area which is delimited by the central opening (3) and the two adjacent cylinder bores (2).
    Type: Application
    Filed: May 28, 2013
    Publication date: May 21, 2015
    Inventors: Jakub Lounek, Petr Kolman
  • Publication number: 20150107448
    Abstract: In one or more embodiments, a method of forming a coated cylinder bore includes honing a cylinder bore to produce a honed cylinder bore, masking partially the honed cylinder bore to form a partially masked cylinder bore, and contacting the partially marked cylinder bore with an electrolytic bath to form the coated cylinder bore. The method may further include applying a pulsed direct current at a voltage of 400 to 500 volts to the electrolytic bath. The contacting step may be carried out via one or more of plasma electric oxidation, plasma electrolytic deposition and micro arc oxidation.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
  • Publication number: 20150096438
    Abstract: A cylinder assembly is provided. The cylinder assembly includes a cylinder body, a rod member, and a cylinder position sensor assembly. The cylinder body may have a bearing sleeve to support the rod member. The cylinder position sensor assembly may include a cylinder position sensor for sensing the position of the rod member. The cylinder position sensor assembly may be mounted inside a hole in the bearing sleeve.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 9, 2015
    Applicant: Caterpillar Inc.
    Inventor: Michael Subrt
  • Patent number: 8991299
    Abstract: A fluid actuator includes a housing having a fluid chamber providing a first friction surface. An actuating member is arranged in the fluid chamber and has a second friction surface slideably engaging the first friction surface. The actuating member is configured to slide within the chamber between first and second positions. An insert is constructed from a first thermoplastic material and provides one of the first and second friction surfaces. A body structurally supports the insert and provides one of the housing or actuating member. The body is constructed from a second thermoplastic material molded about the insert and including short reinforcing fibers.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: March 31, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Marc E. Gage, Kevin M. Rankin, Noah M. Toth
  • Publication number: 20150082979
    Abstract: A lid member has an external shape inscribing a quadrilateral formed by two sets of two facing sides, and has: a pair of first cut-out sections configured by cutting out, in the same size, a pair of diagonal corners from among the two sets of diagonal corners of the quadrilateral; and a pair of second cut-out sections configured by cutting out the other diagonal corners in the same size. The outer shape of the lid member is formed in a point-symmetric shape relative to the center of an opening in a peripheral wall section. The first cut-out sections have a larger surface area than the second cut-out sections, and one out of the pair of first cut-out sections is configured so as to be arranged in the vehicle progression direction and at the bottom in the vertical direction, when a base body is mounted to a vehicle.
    Type: Application
    Filed: March 29, 2013
    Publication date: March 26, 2015
    Inventors: Motoyasu Nakamura, Kazuaki Murayama, Takaaki Ohnishi
  • Publication number: 20150059570
    Abstract: A cylinder seat of an air compressor of a tire repair machine, comprising a seat board, a cylinder, and a motor seat is provided; the seat board includes a first surface and a second surface that is opposite to the first surface; the cylinder is integrated with the seat board and is disposed on the first surface of the seat board; an opening configured to accommodate a plunger is defined in one end of the cylinder, and a one-way valve device is mounted on another opposite end of the cylinder; and the motor seat is integrated with the seat board and is disposed on the second surface of the seat board. Thus, the overall structure of the cylinder seat is simple, and the manufacturing cost can be decreased.
    Type: Application
    Filed: October 24, 2013
    Publication date: March 5, 2015
    Inventor: David Hong
  • Publication number: 20150053077
    Abstract: Disclosed is grey cast iron having an excellent durability and comprising carbon (C) in an amount of about 2.6 to 3.2 wt %, copper (Cu) in an amount of about 0.7 to 0.9 wt %, phosphorus (P) in an amount of about 0.4 to 0.7 wt %, molybdenum (Mo) in an amount of about 0.2 to 0.4 wt %, tin (Sn) in an amount of about 0.02 to 0.08 wt %, and a balance of iron (Fe) and trace amounts of unavoidable impurities, and a method for production thereof. The present invention improves tensile strength, fatigue strength, and the like and further reduces friction coefficient of the grey cast iron as compared with a conventional material. The grey cast iron has an excellent durability and provides a cost reduction of about 10% or more as compared with a conventional material.
    Type: Application
    Filed: December 29, 2013
    Publication date: February 26, 2015
    Applicants: Kia Motors Corporation, Hyundai Motor Company
    Inventor: Duk-Hyun Nam
  • Patent number: 8960074
    Abstract: A pair of penetrating holes are formed along a longitudinal direction in the interior of a cylinder body that constitutes a fluid pressure cylinder. One end of the pair of penetrating holes is sealed by a pair of caps formed in plate-like shapes. The caps, for example, are formed by press molding a plate body made up from a metal material such as aluminum or the like. Outer edge portions of the caps include bent portions, which are inclined at a predetermined angle in a radial outward direction. In addition, the caps are installed by means of the bent portions biting into inner circumferential surfaces of the penetrating holes.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: February 24, 2015
    Assignee: SMC Kabushiki Kaisha
    Inventors: Koji Hara, Yusuke Saito, Toshio Sato, Hironobu Imamura
  • Publication number: 20140360357
    Abstract: A vented pressurized gas-powered actuator includes a housing having a central longitudinal axis and an inner surface. The inner surface has a constant radius between first and second planes extending perpendicular to the axis. At least one vent groove extends from the inner surface in a direction away from the axis. The at least one groove has a first end intersecting the first plane.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 11, 2014
    Applicant: TK Holdings Inc.
    Inventors: Larry Wilmot, Rachid Hammoud
  • Publication number: 20140360355
    Abstract: A cutting tool. The cutting tool includes a cylindrical body and one or more axial rows of cutting elements, which project outwardly from and are situated radially to the circumference of the cylindrical body. Each cutting element of each row includes one or more pocket cutting elements and one or more groove cutting elements. Each pocket cutting element includes a cutting surface. Each groove cutting element includes a cutting surface having groove cutting teeth.
    Type: Application
    Filed: June 10, 2013
    Publication date: December 11, 2014
    Inventors: Rodney G. Whitbeck, David Alan Stephenson, Keith Raymond Bartle, David Garrett Coffman
  • Publication number: 20140363316
    Abstract: Remanufacturing a variable displacement swash plate-type hydraulic device includes receiving a body of a used hydraulic device defining first and second actuator guide bores, at least one of which is out of specifications for guiding a swash plate linear actuator. The method further includes removing material forming the first and second guide bores, and interference fitting first and second sleeves into the body in place of the removed material. Additional material is removed from the first and second sleeves to form new first and second actuator guide bores, each satisfying specifications for guiding a swash plate linear actuator.
    Type: Application
    Filed: June 11, 2013
    Publication date: December 11, 2014
    Inventors: Donald Clark, Joseph W. Louks, Robert Lovenshimer, John Charpia
  • Publication number: 20140360356
    Abstract: A vented pressurized gas-powered actuator includes a housing having a central longitudinal axis and an inner surface. At least one vent groove extends from the inner surface in a direction away from the axis. The at least one groove has a first end spaced apart from a first plane extending perpendicular to the axis, and a second end spaced apart from a second plane extending perpendicular to the axis. The groove second end is closer to the second plane than to the first plane.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 11, 2014
    Applicant: TK HOLDINGS INC.
    Inventors: Larry M. Wilmot, Rachid Hammoud
  • Publication number: 20140345453
    Abstract: There is provided a cylinder device having optimal arrangement of fine textures and optimal surface roughness capable of reducing wear of a cylinder bore side and a piston ring by processing fine textures in an optimal selection region of the cylinder bore side to improve lubrication characteristics between the piston ring and the cylinder bore side while reducing engine oil consumption by processing surface roughness of the cylinder bore side to an optimal status.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 27, 2014
    Inventors: Seok Ju Oh, Sung Gi Kim, Kyu Bong Han
  • Publication number: 20140345452
    Abstract: A fluid end of a high-pressure pump having a power end bore, a discharge bore, a suction bore, an access bore, and a cross-bore intersection formed in portions of the fluid end is provided. A transitional open area opens into the cross-bore intersection from the power end bore; a transitional open area opens into the cross-bore intersection from the access bore; a transitional open area opens into the cross-bore intersection from the suction bore; and a transitional open area opens into the cross-bore intersection from the discharge bore. A spherical geometry is created in the cross-bore intersection. A spherical surface forms an outer boundary of the cross-bore intersection.
    Type: Application
    Filed: May 21, 2013
    Publication date: November 27, 2014
    Applicant: GARDNER DENVER, INC.
    Inventor: Paul Douglas CARY
  • Publication number: 20140338526
    Abstract: Disclosed is a device that includes a natural-gas compression system having a natural-gas powered combustion engine, a compression cylinder configured to receive natural gas and output compressed natural gas, a piston disposed in the compression cylinder and configured to translate through the compression cylinder in response to mechanical power received from the natural-gas powered combustion engine, and a variable-volume head mounted to the compression cylinder and configured to vary a compressed volume of the compression cylinder. In some instances, the variable-volume head includes a head body, an adjustment screw rotatably coupled to the head body, a plug moveable in threaded engagement with the adjustment screw, and an anti-rotation device coupled to the plug, the head body, or both. The anti-rotation device may be configured to impede the plug from rotating relative to the head body as the adjustment screw rotates.
    Type: Application
    Filed: May 24, 2014
    Publication date: November 20, 2014
    Applicant: Cameron International Corporation
    Inventors: Gene McClendon, Randall A. Coleman
  • Publication number: 20140331854
    Abstract: Disclosed embodiments include hydraulic cylinder assemblies and piston assemblies for use in hydraulic cylinder assemblies. A rod is attached to a piston. The rod has first portion, a second portion with a cross-sectional area that is less than a cross-sectional area of the first portion, and a third portion positioned between the first and second portions. The third portion has a cross-sectional area that transitions between the cross-sectional area of the first portion and the cross-sectional area of the second portion. A collar is sized to fit over the rod with an internal feature that engages the third portion of the rod. A fastener holds the piston against the collar and provides a clamp force on the piston.
    Type: Application
    Filed: December 31, 2013
    Publication date: November 13, 2014
    Inventors: Jason R. Coombs, Scott N. Schuh, Thomas J. Tokach
  • Publication number: 20140318367
    Abstract: A cylinder has an insulating gas boundary layer (IGBL) across the cylinder wall inner surface, the IGBL formed by injection of an insulator fluid into the combustion chamber of the cylinder. In one implementation, a pressure differential is engineered between the top region of the cylinder and the bottom region of the cylinder. In yet another implementation, the insulator injection pressure is temporally modified in synchronicity with the piston cycle and/or in accordance with other temporal factors to provide appropriate IGBL coverage.
    Type: Application
    Filed: March 14, 2014
    Publication date: October 30, 2014
    Applicant: Firestar Engineering, LLC
    Inventor: Gregory S. Mungas
  • Patent number: 8869677
    Abstract: A piston for a brake caliper of a disc brake constructed as a pot which is open at one end, having a longitudinal axis, a wall, and a piston head. The piston is supported in a cylinder of the brake caliper such that it can be moved along the longitudinal direction, and it can be placed against a brake pad in the region of the piston head by an axial contact surface. When the piston is subjected to pressure by a hydraulic fluid, the piston moves in the cylinder and presses the brake pad against a brake disc. A projection having a conical surface is provided on an inner surface of the piston head. A recess is provided, which is substantially at the same distance from the longitudinal axis as the projection on the inner surface of the piston head, on an outer surface of the piston head.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: October 28, 2014
    Assignees: Continental Teves AG & Co. oHG, Erdrich-Beteiligungs GmbH
    Inventors: Dirk Koch, Herwig Bauer, Thomas Winkler, Anja Klimt, Uwe Zeibig
  • Publication number: 20140311337
    Abstract: A piston (1) and cylinder (2) assembly that can reduce efficiency losses due to the gas in a linear compressor with aerostatic bearings. The space between the piston (1) and cylinder (2) in the piston-cylinder assembly was designed to decrease radial clearance (12) in the upper portion of the piston (1) when the piston approaches the headpiece (3), i.e., when the density of the gas not being used in the refrigeration process is the highest. The piston (1) and cylinder (2) assembly must exhibit such a geometric ratio that radial clearance (12) changes in inverse proportion to the density of the gas in the radial clearance (12).
    Type: Application
    Filed: November 14, 2012
    Publication date: October 23, 2014
    Applicant: WHIRLPOOL S.A.
    Inventors: Henrique Bruggmann Muhle, Dietmar Erich Bernhard Lilie
  • Patent number: 8864475
    Abstract: In general, a piston-type pump includes a wash flow path that allows a wash liquid such as water to pass through to provide washing and cleaning as the pump operates. The pump may be used in precision liquid dispensing systems and particularly with liquid solutions that have a tendency to precipitate solid particulate. By washing a portion of the pump piston, the liquid solution being dispensed and any solid particulates may be carried away and removed from the pump.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: October 21, 2014
    Assignee: Ivek Corporation
    Inventor: Douglas S. Bensley
  • Publication number: 20140298984
    Abstract: In some two-stroke engines, a stationary ring is disposed in a groove in the cylinder liner. However, it is a challenge to install such a stationary ring while maintaining a narrow gap to minimize gas flow through the gap. A ring system for an internal combustion engine is disclosed that includes an L-shaped, split ring with a reentrant angle and a nested, split ring with a convex quadrilateral cross section nested with the L-shaped ring proximate the reentrant angle. The two rings are affixed so that the two gaps of the split rings cannot align. Or, in other embodiments, the two are allowed to rotate relative to each other over a predetermined angle.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 9, 2014
    Applicant: EcoMotors, Inc.
    Inventors: Peter Hofbauer, Diana Brehob
  • Publication number: 20140298985
    Abstract: The present invention refers to a compressor block (21), which has at least one passage opening of driving member (22), at least one frontal of support (24a) and at least one portion (26), so that at least one first and one second means of structural connection between the portion (26) and the frontal extensions of support (24a) are defined by at least one structural wall (28a) and at least one wall structure (28b). The structural walls (28a, 28b) define the main perimeter of the compressor block (21) and are provided with at least one section of physical association between each other.
    Type: Application
    Filed: June 21, 2012
    Publication date: October 9, 2014
    Applicant: Whirlpool S.A.
    Inventors: Raul Bosco Junior, Emerson Moreira
  • Publication number: 20140283680
    Abstract: An air compressor assembly includes a cylinder housing, an outlet receptacle disposed on the cylinder housing, and a partition having an air passage formed between the cylinder housing and the outlet receptacle, a piston slidably received in the cylinder housing and having a piston rod extended from a piston head for moving relative to the cylinder housing to generate a pressurized air, the piston head includes an upper surface, and includes a cavity formed in the piston head and defined by a bottom surface and an inner peripheral surface and opened upwardly through the upper surface of the piston head and faced and directed toward the partition of the cylinder housing for partially receiving the pressurized air.
    Type: Application
    Filed: March 20, 2013
    Publication date: September 25, 2014
    Inventor: Wen San CHOU
  • Publication number: 20140251125
    Abstract: In order to provide a master cylinder, in particular for a clutch system, an actuating system or a braking system of a vehicle, which enables secure sealing of the cylinder chamber relative to the outside, as well as a reliable flow of hydraulic medium into the cylinder chamber, it is proposed that the piston comprises a first section which has a cylindrical lateral surface and a second section which has at least one region which is set back radially inwardly with respect to the cylindrical lateral surface of the first section, wherein at least one set-back region extends to an end of the piston and wherein the first and second sections are arranged on the piston in such a way that in an actuating position of the piston, the main sealing element in the first section of the piston abuts in sealing manner thereagainst and in the pressure equalisation position of the piston, in the second section of the piston between the piston and the main sealing element, at least one gap is formed, through which hydraulic me
    Type: Application
    Filed: May 21, 2014
    Publication date: September 11, 2014
  • Publication number: 20140251126
    Abstract: A fluid pressure cylinder includes a cylinder tube, a piston and a solid piston rod. The piston rod includes a head-side passage defined by a head-side shaft hole extending in an axial direction, a head-side outer hole open on a part projecting from the cylinder tube and a head-side inner hole open to a head-side chamber and allowing communication between a head-side chamber and a fluid pressure source, and a bottom-side passage allowing communication between a bottom-side chamber and the fluid pressure source. The head-side shaft hole includes an opening end and a tip formed inside the piston rod. The opening end of the head-side shaft hole is sealed by a sealing member.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 11, 2014
    Applicant: KYB-YS CO., LTD.
    Inventors: Nobuyuki Kobayashi, Sadayuki Kamikura
  • Publication number: 20140245882
    Abstract: A cylinder-piston unit, with at least one cylinder accommodating an injection solution and having an outlet opening, and with at least one piston. The cylinder, or a component mounted upstream of the cylinder, has an end face from which, during correct emptying of the cylinder-piston unit, a short cannula protrudes, which has an outlet opening at its free end. The outlet opening has a surface with a border which has a point near the bottom or an edge near the bottom. The point near the bottom or the edge near the bottom lies 0.15-0.3 mm away from the end face or the front-most point or edge thereof. A cylinder-piston unit is developed which is intended for a disposable injector and which is suitable for virtually painless penetration of the human skin, among other reasons for the administration of highly viscous injection solutions.
    Type: Application
    Filed: May 13, 2014
    Publication date: September 4, 2014
    Inventor: RUDOLF MATUSCH
  • Patent number: 8814539
    Abstract: A hermetic compressor includes a closed vessel for storing lubricating oil, an electric-driving element, and a compressing element driven by the electric-driving element. The compressing element includes a cylinder block forming a compression chamber, a piton that reciprocates inside the compression chamber, and an oiling device for supplying the lubricating oil to an outer circumference of the piston. A first oil groove is concavely formed on the outer circumference of the piston, and a second oil groove is concavely formed on a side opposite to the compression chamber relative to the first oil groove. The second oil groove has a spatial volume same or greater than that of the first oil groove. An expanded clearance portion is provided such that a clearance between the piston and the cylindrical hole portion broadens from a top dead point to a bottom dead point.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: August 26, 2014
    Assignee: Panasonic Corporation
    Inventors: Ko Inagaki, Akira Nakano, Yoshinori Ishida, Ichiro Morita
  • Patent number: 8807015
    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: Grant
    Filed: March 28, 2011
    Date of Patent: August 19, 2014
    Assignee: Nissin Kogyo Co., Ltd.
    Inventor: Masatoshi Iyatani
  • Patent number: 8807016
    Abstract: A hydraulic cylinder comprising: a cylinder body which has an open end with an opening and an edge extending therearound, which cylinder body also has an inner surface; a piston rod; a close-off member which has an insert part, which insert part protrudes in a fitting manner into the open end of the cylinder body, which insert part has an outer circumferential face, wherein the close-off member also has a flange opposing the edge of the cylinder body; coupling means which are operable between the inner surface of the cylinder body and the outer circumferential face of the insert part for securing, in at least one axial direction, the close-off member in the cylinder body, and a clamping ring which is clamped between the flange and the edge at the open end of the cylinder body. The clamping ring is made of a resilient, compressible material, in particular is made of an elastomer. The clamping ring is clamped, when compressed in the axial direction, between the flange and the edge at the open end.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: August 19, 2014
    Assignee: Actuant Corporation
    Inventor: Jan Albertus Beumer
  • Publication number: 20140216244
    Abstract: A rocking cylinder assembly comprising a cylinder, rotatable about a rocking axis between first and second end positions, having a cylinder bore terminating at a cylinder bearing surface and a cylinder aperture, and a bearing component having a component bore terminating at a component bearing surface and a component aperture. The ratio of the area of the second one of the apertures to the square of the maximum extent of the second one of the apertures in a direction perpendicular to the rocking axis and perpendicular to a second axis for fluid flow is greater than the ratio of the area of the first one of the apertures to the square of the maximum extent of the first one of the apertures in a direction perpendicular to the rocking axis and perpendicular to a first axis for fluid flow.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 7, 2014
    Applicant: Artemis Intelligent Power Limited
    Inventors: Gordon Voller, Uwe Stein, Jack Lavender, Alex Rampen
  • Patent number: 8770225
    Abstract: The present invention relates to a four-way reversing valve for refrigerating cycle system, in particular to an end cover for fitting with a valve body of a main valve of a four-way reversing valve, a four-way reversing valve using the same and an assembling method thereof. The end cover has a larger diameter section and a smaller diameter section sequentially provided in an axial direction, wherein an outer periphery of the larger diameter section of the end cover is adapted to be tightly connected with the valve body, and an end portion of the smaller diameter section of the end cover is adapted to be fitted with a piston of the main valve, so as to define an operating position of the piston, characterized in that the larger diameter section of the end cover has a frustum shape with a larger outer end and smaller inner end, or an end portion of the larger diameter section of the end cover has radially projected flange for abutting against and fitting with an end surface of the valve body.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: July 8, 2014
    Assignee: Zhejiang Sanhua Climate and Appliance Controls Group Co., Ltd
    Inventors: Guodong Zhang, Songyan Huang
  • Publication number: 20140157981
    Abstract: A piston is provided displaceably in the interior of a cylinder tube that constitutes a fluid pressure cylinder, and a piston cover made from an elastic material is disposed so as to cover one end surface of the piston. The piston cover comprises a main body portion confronting a head cover of the cylinder tube, a guide portion covering an outer circumferential surface of the piston and disposed in sliding contact with an inner circumferential surface of a cylinder hole, and a hook portion folded toward an inner circumferential side with respect to the guide portion. Upon displacement of the piston toward the head cover, shocks are absorbed by abutment of the main body portion against the head cover. When the piston is displaced along the cylinder tube, the guide portion serves to guide the piston in the axial direction by sliding contact with the cylinder hole.
    Type: Application
    Filed: November 29, 2013
    Publication date: June 12, 2014
    Applicant: SMC Corporation
    Inventors: Junichi SAITO, Koji Hara, Toshio Sato
  • Patent number: 8720319
    Abstract: The present invention relates to a cylinder sleeve (10) having an outer mantle surface (11) that has a surface structure (12, 112, 212). According to the invention, it is provided that the mantle surface (11) is provided with elevations (13, 113, 213; 14, 118, 219), that each elevation (13, 113, 213; 14, 118, 219) has at least one rounded area (16, 116, 216) in the region of its base (B), that some of the elevations (13, 113, 213) have at least one undercut (15, 115, 215), and that at least one elevation (14, 118, 219) without undercut is disposed between two elevations (13, 113, 213) with undercut (15, 115, 215).
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: May 13, 2014
    Assignee: MAHLE International GmbH
    Inventors: Ulrich Bischofberger, Stefan Gaiselmann
  • Publication number: 20140123849
    Abstract: A cylinder head gasket includes two main members on two sides, and middle members sandwiched therebetween. The middle members are composed of a first middle member and a second middle member that is separated and distinct therefrom. The first middle member is a metal plate that has cylinder hole rim portions encircling cylinder holes to a particular width, with beads surrounding the cylinder holes being formed in the cylinder hole rim portions. The metal plate either forms separated items, one at each cylinder hole, or else forms an integrated item connected between the cylinder holes. The second middle member is a metal plate that is disposed on the outside of the first middle member and has oil holes and bolt holes. The thickness of the first middle member is greater than that of the second middle member.
    Type: Application
    Filed: March 21, 2012
    Publication date: May 8, 2014
    Inventors: Takahiro Niwa, Hironobu Imanaka, Takeshi Murata, Shinya Wasada
  • Patent number: 8714075
    Abstract: An aerostatic bearing and a linear compressor that includes the aerostatic bearing. In an exemplary embodiment, the aerostatic bearing includes a guide element including holes, and a body structured to move along a surface of the guide element. The holes may include a first section close to the body, of which at least one part area features a cross-sectional surface substantially constant over its entire length which is smaller towards the body than another cross-sectional surface of an area away from the body. A method for producing a hole in an element, using a laser beam, for producing the aerostatic bearing is also disclosed.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: May 6, 2014
    Assignee: BSH Bosch und Siemens Hausgerate GmbH
    Inventors: Marco Giacchi, Ulrich Graf, Christian Mayershofer, Jörn Ostrinsky, Jan-Grigor Schubert, Andreas Wolf
  • Publication number: 20140109762
    Abstract: The control actuator in accordance with the invention comprises a first part with a first wall arrangement and a bottom that circumscribe an inflow volume. The first wall arrangement comprises at least one flow opening through which fluid from the inflow volume can flow. Furthermore, the control actuator comprises a second part with a second wall arrangement that is arranged so as to be adjustable along the first wall arrangement. As a result of this, the fluid flow through a flow opening can be gradually cleared or limited. Preferably, the bottom is arranged in such a manner that the bottom breaks a basic inflow direction Se into the inflow volume and shields the second part against inflow pressure surges.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 24, 2014
    Applicant: KARL DUNGS GMBH & CO. KG
    Inventor: Lars Bathke
  • Patent number: 8689676
    Abstract: A piston-combination comprising an elongate chamber bounded by an inner chamber wall, and comprising a piston sealingly movable in the chamber relative to the chamber wall at least between a first and a second longitudinal position of the chamber, said chamber having cross-sections of different cross-sectional areas at the first and second longitudinal positions, and at least substantially continuously differing cross-sectional areas at intermediate longitudinal positions between the first and second longitudinal positions, the cross-sectional area at said second longitudinal position being smaller than the cross-sectional area at the first longitudinal position, said piston changing dimensions and having different cross-sectional areas thereby adapting to different cross-sectional areas of the chamber during the relative movements of the piston between the first and second longitudinal positions through said intermediate longitudinal positions of the chamber, said combination engaging a rigid surface and bei
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: April 8, 2014
    Assignee: NVB Composites International a/s
    Inventor: Nicolaas Van der Blom
  • Publication number: 20140090555
    Abstract: A cylinder comprises a cylinder body, a main cavity body, a piston and a piston rod. Air inlets and air outlets are arranged in each of two opposite ends of the cylinder body. The cylinder is further configured with an anti-collision structure. The anti-collision structure comprises a buffer rod arranged on the piston. The cylinder body defines a receiving hole corresponding to the buffer rod. The receiving hole is configured with a first sealing ring that seals a gap between the buffer rod and the receiving hole. The anti-collision structure has a flexible buffering function and does not generate hard impact. Thus, the cylinder has a low vibration and high stability.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 3, 2014
    Inventors: Weibing Yang, Chunhao Wu, Kunhsien Lin, Yongqiang Wang, Zhiyou Shu, Minghu Qi, Zenghong Chen, Zhenhua Guo
  • Patent number: 8683687
    Abstract: Method for manufacturing a crankcase of a piston compressor, wherein the piston compressor is provided with a crankcase which is provided with recesses for therein receiving cylinders and with at least an inlet opening, wherein from a flat sheet at least one substantially rectangular body blank is manufactured provided with the desired cylinder receiving recesses, wherein the body blank is then angle bent in an angle bending machine for forming a body part having a limited number of folds, wherein at least two substantially flat end walls are manufactured from a flat sheet, wherein thereupon the at least one body part and the at least two end walls are positioned with respect to each other using a positioning tool and are connected with each other with a welding robot for forming the crankcase. Also disclosed is a crankcase obtained with the method, and a piston compressor provided with such a crankcase.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: April 1, 2014
    Assignee: Grasso-Products B.V.
    Inventors: George Jan Bon, Jacobus Petrus Maria van Houten, Joseph Johannes Adrianus Maria van den Oetelaar