With Assembly Or Disassembly Facilitating Means Patents (Class 92/128)
  • Patent number: 11486418
    Abstract: The present invention provides a seal housing (102) for releasable attachment to a hydraulic or pneumatic cylinder (101), the seal housing (102) being suitable for retaining a seal assembly and the seal housing (102) comprising a generally annular main body (201). The annular main body (201) defines an annular disc-shaped portion (202) having an upper surface (203), a lower surface (204), an outer peripheral edge (205) and an inner edge (206). Said inner edge (206) bounds a circular opening (207) extending the full height of said annular disc shaped portion (202) between said upper and lower surfaces (203, 204).
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: November 1, 2022
    Inventors: Christopher John Pegram, Paul Terence Hynes
  • Patent number: 11421680
    Abstract: A fluid end includes a housing having a bore extending toward a cavity and a wear sleeve positioned within the bore. The fluid end also includes a plunger positioned within a plunger bore extending through the wear sleeve, the plunger reciprocating within the plunger bore. The fluid end further includes a wear sleeve retainer coupled to the housing and positioned to block axial movement of the wear sleeve, the wear sleeve retainer having external threads along a body that engage internal threads formed in the housing. The fluid end also includes an anti-rotation system, coupled to the housing, the anti-rotation system engaging the wear sleeve retainer to block rotation of the wear sleeve retainer in at least one direction. The fluid end further includes a packing nut coupled to the wear sleeve retainer.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: August 23, 2022
    Assignee: Vulcan Industrial Holdings, LLC
    Inventors: Jason David Smith, Kyle Matthew Ellisor
  • Patent number: 11187216
    Abstract: A plunger tool and method relating thereto is designed to remove and insert plungers of a reciprocating pump such as during maintenance and other disassembly operations. The tool has a guide which receives and supports the plunger after removal from, and before reinsertion into, the pump. The tool also has a rack and pinion actuator for moving the plunger.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: November 30, 2021
    Inventors: Bertrom Ballard, Jr., Justin Steven Merchant, Bernt Olsen
  • Patent number: 11149762
    Abstract: A pistonless double-acting cylinder apparatus comprises a piston rod member, a first cylinder member disposed on the piston rod member, a second cylinder member disposed on an end surface of the first cylinder member, a tie rod which connects the first cylinder member and the second cylinder member, nuts provided on both ends of the tie rod, a first sealing ring located between the first cylinder member and the second cylinder member, a first cushion and a second cushion disposed on the piston rod member. The piston rod member comprises a piston rod left section, a first sealing gasket disposed on the piston rod left section, a piston rod middle section disposed on an end surface of the first sealing gasket, a second sealing gasket disposed on an end surface of the piston rod middle section, a piston rod right section disposed on the second sealing gasket.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: October 19, 2021
    Inventor: Chaoneng Huang
  • Patent number: 11067173
    Abstract: A rod assembly for a fluid pressure cylinder includes a rod member and a packing that is mounted on an outer circumferential part of the rod member and slides along a slide hole. Assembly is simple because a conventional hard piston is not used. The assembly can be carried out simply by hand without the use of a dedicated tool. Thus, the rod assembly simplifies assembly work.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: July 20, 2021
    Inventor: Tsukasa Odaka
  • Patent number: 10927815
    Abstract: A wind energy to compressed fluid conversion system has a compressor to compress fluid when the wind energy exceeds a capacity limit of the generator. Instead of trimming blades to create mechanical spillage, excess energy is converted and stored, and can furnish power when the generator experiences a capacity vacancy.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: February 23, 2021
    Assignee: NUtech Ventures, Inc.
    Inventors: Jie Cheng, Farrokh F. Choobineh
  • Patent number: 10385888
    Abstract: A hydraulic cylinder is disclosed. The hydraulic cylinder may have an outer cylindrical tube including an open end, a first female threaded portion, and a second female threaded portion. The hydraulic cylinder may also have a movable element received in the outer cylindrical tube through the open end. Further, the hydraulic cylinder may have a sleeve holder engaged with the first female threaded portion to seal an annular space between the outer cylindrical tube and the movable element. The sleeve holder may have a first male threaded portion mating with the first female threaded portion. In addition, the hydraulic cylinder may have a locking ring engaged with the second female threaded portion to secure the sleeve holder to the outer cylindrical tube. The locking ring may have a second male threaded portion mating with the second female threaded portion.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: August 20, 2019
    Assignee: Caterpillar Global Mining Europe GmbH
    Inventors: Christian Knoblich, Lothar Markowski, Sabine Figge, Jaroslaw Werner
  • Patent number: 10316868
    Abstract: In a cylinder body of a fluid pressure cylinder, pistons are movably accommodated in respective cylinder holes, which are formed in a pair of main body portions. Further, a rod on which a magnet is installed is disposed movably in the axial direction in a connecting section that interconnects one of the main body portions and another of the main body portions. The rod and piston rods are connected to an end plate, whereby the rod is moved integrally with the end plate when the pistons are moved under the supply of a pressure fluid. Additionally, magnetism from the magnet is detected by a detection sensor mounted in the cylinder body, whereby the position of the pistons in the axial direction is detected.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: June 11, 2019
    Inventor: Tsuyoshi Asaba
  • Patent number: 10232837
    Abstract: A support unit includes a first flange portion, a second flange portion and a guiding portion, wherein the first flange portion has a first engagement geometry for securing the support unit to a chassis, wherein the second flange portion has a second engagement geometry for securing a brake cylinder, wherein the guiding portion is arranged adjacent to the second flange portion and has a guiding geometry for guiding a guiding element along a guiding axis, wherein an expansion wedge unit is provided adjacent to the guiding portion and wherein the expansion wedge unit has a housing which is constructed integrally with the guiding portion.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: March 19, 2019
    Assignee: SAF-HOLLAND GmbH
    Inventors: Olaf Drewes, Oliver Marschner
  • Patent number: 10190577
    Abstract: A maintenance tool and method for detaching mechanically-connected components of a drive train in a wind turbine is disclosed. The method involves positioning the maintenance tool below a hoist and hoisting only the lift assembly portion of the maintenance tool into a nacelle of a wind turbine. Connecting the lift assembly portion to a power source in the nacelle and extending at least two induction cables from an induction generator disposed on the lift assembly portion to wrap at least a portion of a component of the mechanically-connected components. Then operating the induction generator to pass alternating current through the induction cables and inductively heat the wrapped component such that thermal expansion creates a clearance between the mechanically-connected components thereby assisting in separating the mechanically-connected components.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: January 29, 2019
    Assignee: General Electric Company
    Inventors: Brian William Manikas, Darrick Adam Vanderwalker, Gregory Clarence Thomas, Kevin Tyler Eherts, Hunter Ryan Anderson, Michael Royce Johnson
  • Patent number: 10087696
    Abstract: A pump drive head for a progressing cavity pump comprises a top mounted stuffing box rotatably disposed around a compliantly mounted standpipe with a self or manually adjusting pressurization system for the stuffing box. To prevent rotary and vertical motion of the polish rod while servicing the stuffing box, a polished rod lock-out clamp is provided with the pump drive head integral with or adjacent to a blow-out-preventer which can be integrated with the pump drive head to save space and cost. A centrifugal backspin braking system located on the input shaft and actuated only in the backspin direction and a gear drive between the input shaft and output shaft are provided.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: October 2, 2018
    Assignee: Oil Lift Technology Inc.
    Inventor: Vern A. Hult
  • Patent number: 10036440
    Abstract: A brake cylinder with a cylinder body having a first flange extending radially therefrom to form a radial edge with a bevel and a non-pressure head having a second flange extending radially therefrom, wherein the second flange is spaced apart from the first flange to define a first gap and includes an angled portion that extends over the bevel of the first flange to define a second gap in communication with the first gap. The two flanges form a gap in communication with the interior of the brake cylinder that extends outwardly to a V-shaped gap between the bevel of the first flange and the angled portion of the second flange to define a brake cylinder vent. The vent may be limited to four predetermined locations spaced equidistantly about the brake cylinder or the vent may extend circumferentially about the brake cylinder.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: July 31, 2018
    Assignee: New York Air Brake, LLC
    Inventor: Jason Connell
  • Patent number: 9906093
    Abstract: A universal mounting housing for a linear actuator has a housing with a wall having an inner surface and an outer surface with at least one bore to enable securement of the housing. The at least one bore has an axial open portion that enables passage of attachment members. The at least one bore has a first and second diameter portion. The first diameter portion extends a length of the open portion. The diameter is of a size necessitating the attachment members to be axially moved into the at least one bore. The second diameter portion is larger than the first diameter portion. The second diameter portion receives a head portion of the attachment member.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 27, 2018
    Assignee: Delaware Capital Formation, Inc.
    Inventor: Matthew Rentz
  • Patent number: 9856752
    Abstract: An exhaust-gas turbocharger (1) having a charger housing (2) which has a compressor housing (3), a turbine housing (4) and a bearing housing (5), and having a control capsule (6) which is fastened to the charger housing (2) and which has a housing lower part (7) and a housing upper part (8). The charger housing (2) has a fastening bracket (9), and the control capsule housing lower part (7) and housing upper part (8) are formed as individual parts which can be preassembled to form the control capsule (6) and which are separate from the charger housing (2) and which, in the mounted state of the control capsule (6), are connected to the fastening bracket (9).
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: January 2, 2018
    Assignee: BorgWarner Inc.
    Inventor: Ralf Christmann
  • Patent number: 9772046
    Abstract: A control valve positioner mounting system is configured to include a control valve, a control valve positioner, an attachment lever translating movement of the control valve to the control valve positioner, and a control valve attachment system for attaching the control valve to the attachment lever using a spring loaded attachment affixed to the control valve and applying spring force to the attachment lever.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: September 26, 2017
    Assignee: Badger Meter, Inc.
    Inventors: Julian Marcel Kullen, Rainer Windeisen
  • Patent number: 9765903
    Abstract: A valve comprises a drive housing part having a front wall with an aperture being defined by a rim, a substantially tubular intermediate piece having an end projecting through the aperture from outside into the interior of the drive housing part, and a shim part on an inside of the front wall. An end of the intermediate piece is flanged radially outwards over the rim and over the shim part.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: September 19, 2017
    Assignee: Buerkert Werke GMBH
    Inventor: Guenter Kress
  • Patent number: 9726298
    Abstract: A valve for use in conjunction with an application device having a valve housing and a valve spindle which bears a sealing element at a first free end outside the valve housing and, within the valve housing, is mounted displaceably between a closed position and a release position. The valve spindle includes at least one first piston element and at least one second piston element, wherein the first piston element is guided in a first piston space and the second piston element is guided in a second piston space, said piston spaces being bounded by the valve housing. A pressure fluid can be supplied in each case to the first piston space and to the second piston space in such a manner that a force acting in the same direction is exerted on the first piston element and on the second piston element.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: August 8, 2017
    Assignee: EISENMANN AG
    Inventors: Jan Reichler, Simon Maurmaier, Mathias Moll
  • Patent number: 9512860
    Abstract: An object of the present invention is to provide a fluid pressure cylinder improved in assembling performance so as to easily fix a partition wall to a cylinder main body. A plurality of pistons 15a and 15b are incorporated in a cylinder main body 11, axially aligned with each other, reciprocable in an axial direction, and respectively provided with piston rods 17a and 17b. A partition wall 14 is attached to the cylinder main body 11 so as to form pressure chambers 21a and 21b. A stopper space is formed by an engagement groove 31 provided to the partition wall 14 and a slit 32 formed so as to extend in a transverse direction of the cylinder main body 11. A stopper 34 is inserted in the stopper space in the transverse direction of the cylinder main body 11 so as to fix the partition wall 14 to the cylinder main body 11.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: December 6, 2016
    Assignee: Koganei Corporation
    Inventors: Akiyoshi Horikawa, Yu Takebayashi
  • Patent number: 9322402
    Abstract: A dove-tail clamp assembly configured to couple a plunger and a pony rod for operation within a fluid end. The clamp assembly using a flange portion extending from the plunger and the pony rod. A clamp within the clamp assembly engages the flanges in the plunger and the pony rod in a non-threaded relationship to permit the pony rod to induce a reciprocating movement of the plunger within the fluid end. The flange portions may be integrally coupled to the plunger and the pony rod in one embodiment. In another embodiment, the flange portions may be threadedly inserted into existing bores in the plunger and the pony rod. The clamp assembly may include a deflector and an alignment pin.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: April 26, 2016
    Assignee: J-Mac Tool, Inc.
    Inventor: Michael David Marette
  • Patent number: 9302741
    Abstract: A retractable keel apparatus for a ship, in particular for a sailboat, including a lift device for a lowerable and retractable fin device having a fin (4) and a fin head plate (20) disposed thereon, the fin head plate making contact with a keel receptacle (5) provided for permanently attaching to a hull when the fin is lowered, the receptacle further having a locking device by which releasable locking can be produced between the fin head plate (20) and the keel receptacle (5). The invention should be designed such that, despite greater stability, including in the event of a crash, the device can be produced and integrated in ships as simply and cost-effectively as possible. For this purpose, the locking device has at least one, preferably a plurality of, preferably driven, longitudinally displaceable locking bolts (15) that can be displaced along a diagonally running displacement path.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: April 5, 2016
    Inventor: Ralf Hinkel
  • Patent number: 9227616
    Abstract: A blocking device for attaching to an entry aperture structure of a spring brake cylinder of a vehicle includes a blocking fastener having a head and a shaft extending from the head. The head has a plurality of cylindrical recesses that extend generally parallel to the shaft. At least a portion of the shaft is threaded. A fastener receiver has an insertion portion and a base extending generally transversely to the insertion portion. The insertion portion has an interior surface that is threaded and is configured to receive the shaft of the blocking fastener. The base has a first tier that extends generally radially from the insertion portion and has a diameter that corresponds to the diameter of the entry aperture structure such that the base engages the entry aperture structure radially. A fastener receiving component is disposed on the shaft.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: January 5, 2016
    Assignee: International Truck Intellectual Property Company, LLC
    Inventors: Terry E. Hively, Jeff G. Kohler, Michael R. Krueger, Allen D. Sprunger
  • Patent number: 9193344
    Abstract: A structure for a spring chamber is formed by connecting a chamber case and a return spring housing case and includes a piston member and a push rod. The piston member has a spring receiving section which holds a power spring inside the chamber case and a cylinder body section which is interlocked with the spring receiving section. A diaphragm is arranged inside a return spring housing case chamber in the return spring housing case, defines a pressure medium chamber, and is deformed by an advancing and retracting operation of the cylinder body section. The push rod member advance and retract with an operation of the diaphragm, and performs braking or releasing of a brake. The push rod member is formed with integral molding of a push plate and a axle body section with aluminum material.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: November 24, 2015
    Inventors: Takeo Shimomura, Akinori Nishimura
  • Patent number: 9138839
    Abstract: A support ring (12) and a piston ring (11) that are arranged in a peripheral groove (20) provided on a piston body (15), the axial width of the peripheral groove (20) being greater than the total axial width of the support ring (12) and of the piston ring (11), and the support ring (12) is arranged radially inwardly at a distance from the piston body (15), and the support ring (12) is relief-milled from the piston body (15) as an unbroken ring.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: September 22, 2015
    Assignee: Hoerbiger Kompressortechnik Holding GmbH
    Inventors: Christian Hold, Martin Lagler, Alexander Jandl
  • Patent number: 9050962
    Abstract: Disclosed herein are a mounting structure for boosters and a booster assembly for vehicles having the same. The mounting structure for boosters to mount a booster provided with a casing formed by hermetically connecting a front cell and a rear cell includes a front bolt passing through the front cell, the inside of the front bolt being hollow, a tube having a cylindrical shape, the inside of which is hollow in the lengthwise direction, and provided with a front part being opposite the front bolt to communicate with the hollow of the front bolt and a rear part crossing the casing to pass through the rear cell, a support washer installed on the tube and connected to the rear portion of the front bolt to surround the outer circumferential surface of the rear portion of the front bolt, and a sealing member provided between the tube and the support washer.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: June 9, 2015
    Inventor: Tae Hwan Kim
  • Patent number: 8887618
    Abstract: Examples of a pressure wave generator configured to generate high energy pressure waves in a medium are disclosed. The pressure wave generator can include a movable piston with a guide through which a piston control rod can move or slide. The pressure wave generator can include a transducer coupled to a medium. During an impact of the piston on the transducer, the control rod can slide in the guide, which can reduce stress on the rod. The pressure wave generator can include a damper to decelerate the control rod, independently of the piston. Impact of the piston on the transducer transfers a portion of the piston's kinetic energy into the medium thereby generating pressure waves in the medium. A piston driving system may be used to provide precise and controlled launching or movement of the piston. Examples of methods of operating the pressure wave generator are disclosed.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: November 18, 2014
    Assignee: General Fusion, Inc.
    Inventors: Lon McIlwraith, John Senger, Darcy Montgomery, Douglas H. Richardson, Peter Kostka, Kristin Bell, Ryan Zindler, Michel Georges Laberge
  • Patent number: 8863912
    Abstract: A control lever including a body portion, a mounting portion, at least one mounting screw, and a lever portion. The body portion has a first section configured to fit within an interior of a bar opening, where the first section is configured to house at least a portion of a control mechanism and has an inclined surface on an outer surface thereof. The mounting portion is configured to slide on the inclined surface, and the mounting screw connects the mounting portion to the body portion. The lever portion is connected to the body portion and is configured to actuate the control mechanism. The mounting screw is configured to slide the mounting portion along the inclined surface so as to push the mounting portion and a side of the first section against an inner surface of the bar opening in order to mount the body portion to the bar opening.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: October 21, 2014
    Assignee: Shimano Inc.
    Inventor: Tatsuya Matsushita
  • Patent number: 8857314
    Abstract: Manually operated air pump for multistage compression of ambient air comprises a multiple coaxial cylinder arrangement. The air inlet (3) is located in the pump handle (2), through which air passes to enter the pump. The pump handle further includes a dust and humidity filter (21) and a cavity (20) to be used as tool storage.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: October 14, 2014
    Inventor: Bahtiyar Tasyagan
  • Patent number: 8851866
    Abstract: Embodiments are described for engaging a pumping cartridge with a pump drive. In certain embodiments, the cartridge, including a cylinder and a movable piston assembly, is initially assembled or subsequently positioned so that the distance between the attachment point on the piston assembly for coupling to a drive assembly, and a reference point on the cylinder, is greater than the maximal distance that will be encountered during normal oscillation of the piston during use. The cartridge, in certain embodiments, may be pressed into a drive assembly that immobilizes the cartridge and couples the piston assembly to the driveshaft. In certain embodiments, when the cartridge is fully inserted into the drive assembly, the piston is pressed into the cylinder sufficiently to establish a selected distance so that the piston shaft is in the proper position to engage with a coupling mechanism carried on the driveshaft.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: October 7, 2014
    Assignee: HydroCision, Inc.
    Inventors: Timothy E. Moutafis, Edward Bromander
  • Publication number: 20140202326
    Abstract: The arrangement is applied to a compressor which comprises: a crankcase, carrying a cylinder provided with a lateral slot and in which is housed a piston provided with two radial holes and with an eccentric axial hole; a connecting rod connected to a crankshaft driven by an electric motor and having a smaller eye mounted in the piston; and a wrist pin having a first end turned to the bearing hub of the crankcase, a second end turned to the lateral slot of the cylinder and a diametrical hole, adjacent to the second end in which is provided an engaging means, for the axial and rotational coupling of a tool for mounting and indexing the wrist pin, in the interior of the piston, in a position in which the diametrical hole is axially aligned with the eccentric axial hole, so as to allow an elastic pin to be introduced in said diametrical hole and in said eccentric axial hole.
    Type: Application
    Filed: June 15, 2012
    Publication date: July 24, 2014
    Applicant: Whirlpool S.A. ã
    Inventors: Fabiano Domingos Silva, Adilson Luiz Manke, Gelson Longo
  • Patent number: 8784043
    Abstract: A device for controlling variable-pitch blades in a turbomachine compressor, including at least one control ring surrounding an external casing of the compressor, and a control shaft connected to the ring and to the rod of an actuator, the body of which is mounted such that it can pivot about an axle borne by a support mechanism of the control shaft so as to guarantee a precise relative positioning of the axis of pivoting of the actuator with respect to the control shaft.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: July 22, 2014
    Assignee: SNECMA
    Inventor: Michel Andre Bouru
  • Patent number: 8776668
    Abstract: A machine housing of a piston machine is disclosed. The machine housing is formed in two parts. The machine housing has a main housing which is closed off by a connection plate. Here, the connection plate is screwed to the main housing by means of a plurality of screws, and is positioned with low tolerances with respect to said main housing by means of two centering pins. Here, the centering pins are arranged with twofold rotational symmetry with respect to a shaft axis of a drive shaft of the piston machine. In contrast, screw positions do not have rotational symmetry with respect to said shaft axis. This prevents incorrect mounting of the connection plate.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: July 15, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Christian Spielvogel, Martin Zug
  • Patent number: 8701546
    Abstract: A coupling for a pump connects a plunger to a plunger adaptor. The coupling provides a space between an end of the plunger and an end of the adaptor. Upon disconnecting the plunger from the adaptor, the space provides for removal of the plunger from and through a well of the pump.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: April 22, 2014
    Assignee: Gardner Denver Water Jetting Systems, Inc.
    Inventor: Amos Pacht
  • Patent number: 8695863
    Abstract: A sleeve for a pneumatic nailer is provided that includes a cylindrical tubular body made of plastic and having a lower edge; and a metal reinforcing ring is integrally secured to the lower edge.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: April 15, 2014
    Assignee: Illinois Tool Works, Inc.
    Inventor: Ryan L. Francis
  • Publication number: 20140076157
    Abstract: A piston main body (13) in a piston assembly (10A) of a fluid pressure cylinder (11) has a first piston member (40) and a second piston member (42) composed of a plate-shaped member. The first piston member (40) and the second piston member (42) are joined in a state overlapping in the axial direction of a piston rod (15). The second piston member (42) is not provided with a hole that passes through in the plate thickness direction.
    Type: Application
    Filed: May 22, 2012
    Publication date: March 20, 2014
    Inventor: Chiaki Fukui
  • Patent number: 8528462
    Abstract: A coupling for a pump connects a plunger to a plunger adaptor. The coupling provides a space between an end of the plunger and an end of the adaptor. Upon disconnecting the plunger from the adaptor, the space provides for removal of the plunger from and through a well of the pump.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: September 10, 2013
    Assignee: Gardner Denver Water Jetting Systems, Inc.
    Inventor: Amos Pacht
  • Patent number: 8522667
    Abstract: A method and apparatus for maintaining a seal between a cylinder and a fluid manifold for a reciprocating force delivery device is disclosed. A cylinder retention assembly comprises a rotatable member with a variable topography surface. The rotatable member is disposed against a stop extending outwardly from the cylinder, and is fastened to the fluid manifold by a locking ring. When rotated, the rotatable member produces an axial force on the locking ring and the cylinder, urging the cylinder against the fluid manifold. The cylinder retention assembly may be used in reciprocating pumps and compressors.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: September 3, 2013
    Assignee: TSC Offshore Group Limited
    Inventor: Don Clemens
  • Patent number: 8511218
    Abstract: Clamping device for cylinder sleeves of a pump system, and a piston pump or plunger pump for conveying drilling fluid during drilling of boreholes, particularly in the field of oil and natural gas production, and its use. Pump system includes a pump unit and a driving rotary drive unit. Clamping device for cylinder sleeve of a piston pump or plunger pump includes a cylinder sleeve receptacle, a clamping element provided at the pump, and cylinder sleeve or a portion of the cylinder sleeve provided between the clamping element and the cylinder sleeve receptacle, Clamping element and cylinder sleeve receptacle are connected by a connecting apparatus.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: August 20, 2013
    Assignee: Bentec GmbH Drilling & Oilfield Systems
    Inventors: Malte Cordes, Michael Gelker
  • Patent number: 8468932
    Abstract: A brake booster includes a housing configured for mounting to the master cylinder of a braking system. The housing defines a bore for receiving a power piston and an end cap, with a return spring disposed between the head of the piston and end cap. The housing and end cap define a recess and a rib sized to be received within the rib but configured for an interference fit between the end cap and housing outside the recess. The interference fit is calibrated to require a force to push the end cap into the bore that exceeds the force generated by the return spring when it is compressed between the end cap and the piston head. The recess and rib at least temporarily retains the spring within the bore until the brake booster is mounted to the master cylinder.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: June 25, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Larry E. Isakson
  • Patent number: 8464607
    Abstract: A cylinder includes a cylinder body defining a cylinder bore. End caps close opposite ends of the cylinder body. A piston/rod assembly of the cylinder includes a piston portion and a rod portion. The piston portion is located in the cylinder bore and the rod portion extends outwardly of the cylinder body through at least one of the end caps and terminates at an end having a first interlocking member. The cylinder also includes an attachment member having opposite first and second ends. The first end of the attachment member has a second interlocking member for cooperating with the first interlocking member for attaching the attachment member to the end of the rod portion. The second end of the attachment member includes a mating feature for connecting the attachment member and thus, the rod portion to another part.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: June 18, 2013
    Assignee: Parker Hannifin Corporation
    Inventor: Todd K. Rhoades
  • Patent number: 8402879
    Abstract: The present invention relates to a tool for screwing a piston onto the piston rod of a hydraulic cylinder, in particular of a hydraulic cylinder with a piston diameter of more than 200 mm, comprising a first tool element with connecting elements for releasable connection with the piston and a second tool element with connecting elements for releasable connection with the piston rod, which is rotatable with respect to the first tool element, wherein the torque necessary for screwing together piston and piston rod can be applied onto the piston and the piston rod via the connecting elements by rotating the first tool element against the second tool element.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: March 26, 2013
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Hans-Peter Lavergne, Ralph Soell, Christoph Guhl
  • Patent number: 8393260
    Abstract: A valve cap for sealing an aperture in a pump; a plugging assembly for a valve cap to seal at an aperture in a pump; a docking unit for use with a plugging assembly for sealing an aperture in a pump; and a method of sealing an aperture in a pump. A valve cap (10) comprises a valve plug (16) including, a first engaging means (40); a compression unit (20) including a plurality of springs (56) to apply a compressive load upon the plug and second engaging means (62, 64); a docking unit (24) for landing on the compression unit, including one or more pistons (92) to apply a compressive load upon said springs and third engaging means (74, 76, 78) to lock said plug to said compression unit and seal said plug against said aperture.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: March 12, 2013
    Assignee: Spicket Vlaves and Pumps Limited
    Inventors: George Coulter Kennedy, Guillaume Sourdois
  • Patent number: 8356984
    Abstract: A hand air pump includes a connecting member having a barrel and an outlet port and a mouth, a receptacle having a cylinder engaged onto the barrel and having a slidable piston, the receptacle includes a channel for engaging with a cover plate which includes a longitudinal hole communicative with the mouth of the connecting member, and a gauge device includes a notch for receiving the receptacle and includes one or more latching members for retaining the gauge device to the receptacle and includes a connector engaged with the hole of the cover plate for receiving the pressurized air from the cylinder and for measuring an air pressure within the cylinder.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: January 22, 2013
    Assignee: Beto Engineering & Marketing Co., Ltd.
    Inventor: Lo Pin Wang
  • Patent number: 8356549
    Abstract: The invention concerns a method of mounting a cylinder arrangement of a hermetically enclosed refrigerant compressor arrangement in a carrier arrangement (14, 15), in which the cylinder arrangement is inserted in the carrier arrangement (14, 15), aligned in relation to a crank shaft (5) and connected to the carrier arrangement (14, 15). It is endeavored to ensure a good efficiency of the refrigerant compressor arrangement. For this purpose the carrier arrangement is deformed, before inserting the cylinder arrangement, by means of a calibration cylinder (40), until the calibration cylinder (40) has a predetermined alignment, after which the calibration cylinder (40) is removed and replaced by the cylinder arrangement in the carrier arrangement (14, 15).
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: January 22, 2013
    Assignee: Secop GmbH
    Inventors: Frank Holm Iversen, Marten Nommensen, Ekkehard Handke, Norbert Stöcken
  • Patent number: 8348631
    Abstract: The invention relates to a lubricant or hydraulic pump for delivering oil or the like having a housing which is formed from two housing shells which are of at least substantially similar or identical construction. An inlet is provided on or in the housing. Furthermore, a rotatably mounted drive element, which is configured, in particular, as a swash plate, and at least one pump element which interacts with the drive element to deliver oil or the like are arranged in the housing.
    Type: Grant
    Filed: March 15, 2007
    Date of Patent: January 8, 2013
    Assignee: Lincoln GmbH
    Inventors: Zdravko Paluncic, Andreas Schoenfeld
  • Patent number: 8297940
    Abstract: A downhole pumping assembly has a tubing string with plural barrels which are arranged in-line with the tubing. The tubing string has a seating location adjacent to each barrel. A standing valve arrangement, which includes a standing valve and a seating device, is located with the standing valve adjacent to the lower end of one of the barrels. A plunger has a traveling valve that is located for reciprocation within the one barrel. The plunger has a clearance with each of the barrels so as to form a fluid seal. The plunger reciprocates inside the barrel so as to lift fluid to the surface. Over time, the barrel will exhibit wear. Instead of pulling the entire tubing string to replace the barrel, the standing valve and the plunger are relocated to one of the other barrels located in the tubing string and reciprocation is resumed to resume pumping.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: October 30, 2012
    Assignee: Harbison-Fischer, Inc.
    Inventor: Benny J. Williams
  • Patent number: 8257065
    Abstract: The high pressure lubricant pump for steelworks has a body provided with at least one cylinder, the cylinder having a lubricant intake port and a lubricant delivery port. Within the cylinder a piston is movable to pressurize the lubricant. The cylinder and the piston define a pre-assembled pumping unit removably fixed into a seat of the body.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: September 4, 2012
    Assignee: DROPSA S.p.A.
    Inventor: Walter Divisi
  • Patent number: 8225707
    Abstract: To avoid having to strip down a radial piston engine (1) into its individual components when it is disassembled, a rotary cylinder (5) has a collar (19) on which the rotary cylinder is supported against the cam disk (2), the cam disk (2) being rotationally fixed in position to a housing portion (13).
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: July 24, 2012
    Assignee: ZF Friedrichshafen AG
    Inventor: Eduard Heilig
  • Patent number: 8186263
    Abstract: Apparatus and method for securing a cylinder liner to a pumping module. A first part of an assembly housing pistons is fastened to a pumping module and a second part of the assembly is brought against the first so that the pistons act on tensioning plates which each have a stud rod extending therefrom through the assembly at an end distal to the pumping module. Each rod has a first portion substantially surrounded in an elastomeric member and a second portion threaded to receive a nut. The rods are passed through a clamping ring on the cylinder liner and the nut is attached to the rod. Actuating the pistons causes initial compression of the elastomeric member by the tension plate and allows tightening of the nut toward the pumping module. Release of the pistons then causes expansion of the elastomeric member to urge the cylinder liner towards the pumping module.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: May 29, 2012
    Assignee: Spicket Valves & Pumps Ltd.
    Inventor: George C. Kennedy
  • Patent number: 8177524
    Abstract: Apparatus for securing and selectively releasing a piston pump from a drive assembly including two collar segments, with one segment fixed to the drive assembly and the other segment movable only linearly transversely with respect to a longitudinal axis of the piston pump, with an over-center mechanism to lock the movable segment via a pair of links. The piston is engageable and disengageable with a drive mechanism in the drive assembly via a pair of interengaging surfaces, with one C-shaped member receiving the other member which is T-shaped.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: May 15, 2012
    Assignee: Wagner Spray Tech Corporation
    Inventors: Joseph W. Kieffer, Scott R. Carpenter
  • Patent number: 8171841
    Abstract: A detachable connecting rod includes a first member (410)a large end portion (411) having a trough hole (H1), and a first connection rod portion (412) extending from the large end portion (411), the first connection rod portion (412) having a pair of spaced apart arms defining a coupling groove (413) extending in the same direction as an axial direction of the through hole (H1); a second member (420) including a small end portion having a through hole (H2), and second connection rod portion (422) extending from the small end portion, the second connection rod (422) portion being inserted into the coupling groove (413) and a coupling unit for coupling the first connection rod portion (412) to the second connection rod portion inserted (412) into the coupling groove (413) of the first member (410). The detachable connecting rod is useable in a compressor.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: May 8, 2012
    Assignee: LG Electronics Inc.
    Inventors: Kyoung-Jun Park, Ji-Young Bae, Jin-Kook Kim, Bum-Joon Kim, Hyuk Nam, Jong-Mok Lee, Jong-Hyuk Kim, Kyeong-Ho Kim