Non-metallic Working Member, Cylinder Or Partition Patents (Class 418/152)
  • Patent number: 12129850
    Abstract: A screw rotor is made out of polymer. The screw rotor includes a shaft with a rotor body on it. The polymer of the shaft is reinforced with fibers. The shaft features elements that engage the rotor body or corresponding elements on the rotor body, such that the elements prevent an axial and/or rotational movement of the shaft with respect to the rotor body.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: October 29, 2024
    Assignee: ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP
    Inventors: Karen Anna Leon Marien, Peter Michel, Patrick Hirsch
  • Patent number: 12006924
    Abstract: A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of fastener receiving apertures that are disposed along the X-axis on either side of the shaft. The pair of fastener receiving apertures each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.07 to 1.11.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: June 11, 2024
    Assignee: Caterpillar Inc.
    Inventors: Matthew G. Mickiewicz, Stive Ramalho, Darren Joseph Hopf, Justin Douglas Speichinger, Paul Alan Rousseau, Brice Mallein
  • Patent number: 11953032
    Abstract: A hydraulic pump or motor includes a mounting flange that is disposed at the first end of the housing. The mounting flange defines a pair of bolt receiving slots that are disposed along the X-axis on either side of the shaft. The pair of bolt receiving slots each define a radius center that are spaced away from each other a X dimension, and a pilot projection extends longitudinally away from the mounting flange, defining a pilot projection diameter. A ratio of the X dimension to the pilot projection diameter ranges from 1.1 to 1.5.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: April 9, 2024
    Assignee: Caterpillar Inc.
    Inventors: Justin Douglas Speichinger, Ramalho Stive, Darren Joseph Hopf, Aurelien Herve Bernard, Paul Alan Rousseau
  • Patent number: 11867172
    Abstract: A uniaxial eccentric screw pump includes: a rotor 1 including a shaft body of a male screw type; a stator 2 having a through hole 2a of a female screw type through which the rotor 1 is inserted; a casing 3 connected to one end side of the stator 2; an end stud 4 connected, to the other end side of the stator 2; and a position adjusting member 5 that adjusts a relative position of the stator 2 with respect to the rotor 1 in an axial direction.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: January 9, 2024
    Assignee: HEISHIN Ltd.
    Inventor: Nobuhisa Suhara
  • Patent number: 11806902
    Abstract: A stator for use in a positive displacement motor or a progressing cavity pump. The stator comprises an elastomer mix preferably including rubber and a fiber reinforcement. The fiber reinforcement includes a plurality of fibers. The elastomer mix is formed into a stator via an injection molding process. The injection molding process includes a shear flow step in which shear flow is induced in the elastomer mix while the elastomer mix is in an uncured state. The shear flow modifies the orientation of the fibers into an advantageous modified fiber orientation. Shear flow is induced preferably via differential rotation of injection mold assembly elements during the injection molding process. Methods of manufacturing the stator are also disclosed.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: November 7, 2023
    Assignee: Abaco Drilling Technologies LLC
    Inventor: Peter T. Cariveau
  • Patent number: 11686200
    Abstract: A fluid pump includes a rotor which is centered about an axis, the rotor having a rotor central chamber and a plurality of vane slots. A stator has a recess therein within which the rotor is located, the recess having a recess peripheral surface which is eccentric to the axis. Each vane slot includes a vane therein such that the vanes define a plurality of pumping chambers which expand and contract based on rotational position the rotor relative to the stator. A positioning ring is located within the rotor central chamber such that the positioning ring engages each vane and such that the positioning ring urges each vane into contact with the recess peripheral surface. The positioning ring is radially aligned with a midpoint of each vane.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: June 27, 2023
    Assignee: Delphi Technologies IP Limited
    Inventors: Alejandro Moreno, Aldo Venegas
  • Patent number: 11428222
    Abstract: A vane pump includes: a casing forming a pump chamber therein; a rotor arranged inside the casing to rotate eccentrically with respect to the casing; and a plurality of vanes configured to rotate with the rotor and slide on an inner side surface of the casing. At least one of Formula (1): l?(b/a)×k and Formula (2): l?(c/a)×j is satisfied, where “a” represents a height of the pump chamber, “b” represents a height of the rotor, “c” represents a height of the vane in a rotation axis direction of the rotor, and where “l” represents a linear expansion coefficient of the casing in the rotation axis direction, “k” represents a linear expansion coefficient of the rotor in the rotation axis direction, and “j” represents a linear expansion coefficient of the vane in the rotation axis direction.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 30, 2022
    Assignee: DENSO CORPORATION
    Inventors: Keiichirou Ishihara, Tomohiro Itoh, Yasuo Katoh
  • Patent number: 11149497
    Abstract: A downhole drilling motor includes a motor housing having an inner bore and an outer surface. A power section includes a stator elastomer at least partially disposed within the inner bore of the motor housing. A bearing section includes an upper bearing at least partially disposed within the inner bore of the motor housing. The motor housing further includes an opening extending from the inner bore to the outer surface to provide a bypass fluid path for a fluid in the inner bore. The opening is disposed on the motor housing between a lower end of the stator elastomer and an upper end of the upper bearing. The bypass fluid path allows the downhole drilling motor to accommodate a higher flow rate of a fluid through the stator elastomer of the power section than through the upper bearing of the bearing section.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: October 19, 2021
    Assignee: Rival Downhole Tools LC
    Inventor: Gunther HH von Gynz-Rekowski
  • Patent number: 10920493
    Abstract: A method of making a stator includes positioning an inner tubular member having an inner surface within an outer tubular member, installing a rigid mandrel within the inner tubular member, and applying a compressive force to at least one of the inner tubular member and the outer tubular member.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: February 16, 2021
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Witali Huber, Gunnar Michaelis, Carsten Hohl, Erik Bartscherer, Harald Grimmer, Christian Fulda, Dorothea Marion Fischer, Thorsten Regener
  • Patent number: 10823168
    Abstract: The invention relates to a rotary piston pump for one-time use made of plastic for screwing onto a fastening nozzle on a tubular bag, having two rotors (10), which are coupled to each other via gear wheels (11) and which can be driven in opposition and which are mounted in a pump housing (5), which has suction nozzles (6) and outlet nozzles (7), wherein each rotor (10) has a rotor shaft (12), the rotor shaft ends (15) thereof being mounted in the walls (8, 4) of the pump housing (5), and the gear wheels are integrally molded to the rotor shafts, and wherein each rotor (10) has two rotor wing walls (13) arranged diametrically on the rotor shaft (12) which flare continuously outward and to each of the peripheral ends of which a partially cylindrical rotor wing shoe (14) is molded, wherein the rotor wing shoes (14) contact the cylindrical inside wall regions of the pump housing (5), on one side, and the rotor wing shafts (13) of the adjacent rotor (10) on the other, in a sliding and sealing matter, wherein seals
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: November 3, 2020
    Assignee: ROBERT BOSCH GMBH
    Inventor: Dan Barron
  • Patent number: 10808695
    Abstract: A fluid gear pump gear arranged to rotate about a first axis includes a concentrically disposed first hub portion and a plurality of first teeth radially projecting and circumferentially spaced about the first hub portion, the first hub portion and the first teeth being formed of a ceramic material. The gear also includes a first shaft on which the first hub portion is carried.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 20, 2020
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Blair A. Smith, Steven Poteet
  • Patent number: 10746165
    Abstract: Suction muffler (1) for a hermetic refrigeration compressor (2), the suction muffler (1) comprising an inlet (3), so that refrigerant can flow into the suction muffler (1), and an outlet (4), so that refrigerant can flow out from the suction muffler (1), the suction muffler (1) further comprising two damping chambers (5, 6) for sound damping, where the two damping chambers (5, 6) each has a floor (8, 9) and where a wall element (11) is provided, in order to separate the two damping chambers (5, 6) from each other for the refrigerant in the region of their floors (8, 9).
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: August 18, 2020
    Assignee: SECOP Austria GmbH
    Inventor: Hans-Peter Schögler
  • Patent number: 10731465
    Abstract: A rotor assembly has a vane which engages an eccentric cam block using an insert. The insert is removably attached to the vane. The vane is captured within a transverse slot in the rotor and executes reciprocal motion transversely to the axis of rotation of the rotor as the rotor rotates.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: August 4, 2020
    Assignee: Torad Engineering LLC
    Inventors: John Montgomery, Gregory T. Kemp, Joseph Orosz
  • Patent number: 10655469
    Abstract: A delivery element for a rotary pump is proposed which is formed in one part from a metallic material, wherein the delivery element includes at least one first surface and at least one second surface which differ from each other, at least in regions, in at least one material property. A method for manufacturing a delivery element in accordance with the invention, a rotary pump including at least one delivery element in accordance with the invention, and the use of a delivery element in accordance with the invention in a rotary pump is also proposed.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: May 19, 2020
    Assignee: Schwäbische Hüttenwerke Automotive GmbH
    Inventor: Klaus Merk
  • Patent number: 10626865
    Abstract: A lightweight gear pump easy to manufacture, having a reduced manufacturing cost, while giving sufficient performances. It consists of: A gear, three metal plates, placed on each other, an intermediate plate of which including an eight-shaped cavity adapted to house the gear, and two peripheral plates having the function of enclosing the gear in the cavity, a circuit for fluid supply to the gear, centering means to align the three plates above each other, the three metal plates being provided with centering holes in the axial direction, adapted to receive the centering means, the device according to the invention is particularly intended for liquid transfer applications for automobiles or heavy trucks.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: April 21, 2020
    Assignee: AKWEL SA
    Inventors: Matthieu Bardin, Christophe Bondran
  • Patent number: 10539133
    Abstract: A method of treating, tuning, assembling, and/or overhauling a twin rotor device (200, 1200) includes applying a coating material (102) on an internal set of working surfaces (218, 222, 224, 226, 228, 1218, 1222, 1224, 1226, 1228) of the twin rotor device when at least partially assembled. The coating may be factory or field applied to a new or used twin rotor device. The working surfaces may be uncoated or previously coated and may be built-up as the coating material forms a coating (206, 1206) on at least some of the working surfaces. Manufacturing variations of a pair of rotors (220, 1220) and a housing (210, 1210) may be compensated by the coating. One or more performance characteristics of the twin rotor device may be improved by the coating, and variation between a series of twin rotor device may be reduced or substantially eliminated. The coating may reduce internal leakage and increase volumetric efficiency of the twin rotor device.
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: January 21, 2020
    Assignee: Eaton Intelligent Power Limited
    Inventors: Matthew Gareld Swartzlander, Michael John Froehlich, Timothy Michael Kish
  • Patent number: 10287829
    Abstract: Embodiments of the present invention are generally related to a method and apparatus for subterranean wellbores and in particular, to a method and apparatus for rotating a subsurface tubular string, such as a casing section, without rotation at the surface. More specifically, a casing section of a wellbore may be rotated to provide a cement seal with increased strength and reliability. In one embodiment, a downhole tool and rotation assembly is disclosed which imparts a torsional force to a predetermined casing section when a fluid is flowed through the downhole tool and rotation assembly.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: May 14, 2019
    Assignee: COLORADO SCHOOL OF MINES
    Inventors: William W. Fleckenstein, Alfred W. Eustes, III
  • Patent number: 10233924
    Abstract: An eccentric screw pump, comprising a rotor that extends along a longitudinal axis of the rotor from a drive end to a free end, a stator housing with an internal cavity that extends along the longitudinal axis from a stator inlet opening to a stator outlet opening and that is designed to accommodate the rotor, a drive motor with a drive shaft that is coupled with the rotor to transmit a torque, a first cardan joint which is placed within the transmission of the torque between the drive shaft and the rotor, and a stator outlet flange that is arranged in flow direction behind the rotor. The stator outlet flange comprises a flange connection plane that is oriented non-vertically to the longitudinal axis.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: March 19, 2019
    Assignee: Hugo Vogelsang Maschinenbau GmbH
    Inventor: Paul Krampe
  • Patent number: 10047735
    Abstract: The present disclosure relates to a mixing pump (10) for combining two or more substances. More specifically, the mixing pump (10) is adapted to combine controlled amounts of those substances so as to produce a mixture containing predetermined proportions of those substances. The mixing pump includes a chamber (23) lying in fluid communication with a first substance inlet (50), a second substance inlet (51) and a mixture outlet (52). The mixing pump (10) also includes a pumping member disposed in the chamber (23) and adapted to draw first and second substances from the first and second substance inlets (50,51) and to expel a mixture of those substances through the mixture outlet (52).
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 14, 2018
    Assignee: Perkins Engines Company Limited
    Inventor: Paul J. Smith
  • Patent number: 9957963
    Abstract: Scroll members for scroll compressors made from one or more near-net shaped powder metal processes, either wholly or partially fabricated together from sections. In certain variations, the involute scroll portion of the scroll member has a modified terminal end region. The terminal end region may include an as-sintered coupling feature comprising a tip component that forms a contact surface for contacting an opposing scroll member during compressor operation. The tip component can be a tip seal or a tip cap received by the as-sintered coupling feature. The tip cap may be sinter-bonded or otherwise coupled to the terminal end region. In other variations, a terminal end region may comprise a second material including a tribological material that forms a contact surface. Methods of making such scroll members for scroll compressors are also provided.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: May 1, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Robert C. Stover, Marc J. Scancarello, Jean-Luc M. Caillat
  • Patent number: 9903369
    Abstract: Disclosed herein is a vane rotary compressor in which a fluid such as a refrigerant is compressed while a volume of a compression chamber is reduced during rotation of a rotor. There is provided a vane rotary compressor capable of preventing a delay of rotation operation of a vane by respectively forming oil films on both sides of a hinge portion of the vane in a rotation direction thereof and smoothly sliding the hinge portion.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: February 27, 2018
    Assignee: HANON SYSTEMS
    Inventors: Jung Myung Kwak, Kweon Soo Lim, Seon Joo Hong
  • Patent number: 9890786
    Abstract: A rotary compressor includes: a compressing unit that includes an annular cylinder, an end plate, an annular piston which is fit in an eccentric portion of a rotation shaft, and a vane which protrudes from the inside of a vane groove of the cylinder to the inside of an operation chamber, comes into contact with the annular piston, and partitions the operation chamber into an inlet chamber and a compression chamber. The vane is formed of steel and has a diamond-like carbon layer formed on a sliding surface with respect to the annular piston. The annular piston is formed of Ni—Cr—Mo cast iron to which 0.15 wt % to 0.45 wt % of phosphorus is added, or is formed of cast iron or steel and has an iron nitride layer formed on an outer circumferential surface thereof.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: February 13, 2018
    Assignee: FUJITSU GENERAL LIMITED
    Inventors: Junya Tanaka, Kenji Komine
  • Patent number: 9752579
    Abstract: A scroll member includes a base having a panel and a spiral blade provided to extend from the panel toward another scroll member, resin layer L1 formed on the base, and a plurality of grooves C formed on a surface of the resin layer. The plurality of grooves C are formed on the surface of resin layer L1. A cross-section of each groove C has a shape similar to a U-shape or a semicircle in which the width decreases toward the deeper position and the rate of change in width increases toward the bottom. Grooves C are formed by moving an edge of a cutting tool along the original surface of the resin layer, which is originally formed on base L0 by application or the like.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: September 5, 2017
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Hiroshi Kanemitsu, Masanori Akizuki
  • Patent number: 9664192
    Abstract: In one embodiment, a compression mechanism unit of a rotary compressor includes a cylinder includes a cylinder chamber, a roller in the chamber, first and second vanes which come into contact with the roller and partition the chamber into a compression side and an absorption side, and a bias member which biases the vanes. On both end sides of a posterior end portion of the first vane, first vane side attachment portions having an equal dimension in the axial direction are provided. On both end sides of the second vane along the axial direction of the axis, second vane side attachment portions having an equal dimension in the axial direction are provided. The vanes are attached to the bias member via the attachment portions.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: May 30, 2017
    Assignee: TOSHIBA CARRIER CORPORATION
    Inventors: Toshimasa Aoki, Hisataka Kato, Masahiro Hatayama, Isao Kawabe, Keiichi Hasegawa
  • Patent number: 9427771
    Abstract: An orbiting scroll is fixed on a rotating table and rotated about a spiral center. A spray nozzle is positioned in the spiral center or at an outside end of the orbiting scroll and caused to discharge a coating toward a side face of a wrap portion. The spray nozzle is moved along a straight line in a radial direction while discharging the coating. When a spraying start position is set as the spiral center, a rotation angle speed of the orbiting scroll is gradually reduced in accordance with the movement of the spray nozzle. When the spraying start point is set as the outside end, the rotation angle speed of the orbiting scroll is gradually increased in accordance with the movement of the spray nozzle. As a result, the coating can be applied to the wrap portion side face evenly.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: August 30, 2016
    Assignee: ANEST IWATA CORPORATION
    Inventors: Junichi Asami, Tatsuya Minegishi, Tohru Kuwata
  • Patent number: 9322417
    Abstract: A motor assembly for a pneumatic tool includes: a motor cylinder coaxially secured in a tubular inner housing, which is coaxially secured in a tubular outer housing and has an inlet passage defining a longitudinal axis, including a valve seat, and defining forward and reverse passages that communicate with a motor chamber and extend through the valve seat, and an exhaust port that communicates with the motor chamber, and a throttle passage defined between the inner and outer housings; a motor rotor supported within the motor chamber and rotatable in a forward or reverse direction; and a rotary valve coaxially disposed in the inner housing, supported by the valve seat, and rotatable about the longitudinal axis between forward and reverse positions.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: April 26, 2016
    Assignee: BASSO INDUSTRY CORP.
    Inventors: San-Yih Su, Cheng-Wei Lai
  • Patent number: 9212662
    Abstract: A rotary vane pump includes a housing that encloses an air chamber. An intake aperture extends to the air chamber. A check valve couples with the intake aperture and includes a stop having first and second sides. A helical spring engages the first side and biases the second side against a valve seat. A porous body is disposed between the helical spring and the air chamber for preventing fluid backflow.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: December 15, 2015
    Assignee: Ford Global Technologies, LLC
    Inventor: Mohammad Ali Moetakef
  • Patent number: 9098016
    Abstract: A roller includes a cylindrical body having openings on both ends thereof and a press-fit member fitted in at least one of the openings of the cylindrical body with an outer circumferential face thereof in contact with an inner face of the cylindrical body. The outer circumferential face of the press-fit member is grooved obliquely to an axis of the cylindrical body, and the inner face of the cylindrical body is smooth at least in a portion that contacts the outer circumferential face of the press-fit member.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: August 4, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuki Moro, Noriyuki Kamiya, Hiroya Abe, Masashi Nakayama, Soichiro Fukutomi, Rei Suzuki, Takashi Innami, Yuusuke Arai
  • Patent number: 9028233
    Abstract: A rotary piston pump equipped with a motor having two counter-rotating rotary pistons. The two rotary pistons are housed in an oval pump housing. The two rotary pistons are arranged on a first output shaft and a second output shaft. The first output shaft and the second output shaft are driven and synchronized via at least one elastic element.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: May 12, 2015
    Assignee: NETZSCH-Pumpen & Systeme GmbH
    Inventors: Hans Juergen Linde, Bernhard Murrenhoff, Robert Kurz, Reinhard Denk, Josef Strassl, Thomas Boehme, Hisham Kamal, Stefan Weigl, Roger Willis, Stefan Kern, Johann Kreidl, Gunter Herr, Franz Kneidl, Mikael Tekneyan, Erwin Weber, Marcel Verhoeven, Mathias Gradl, Udo Enderle
  • Patent number: 8985977
    Abstract: An apparatus for use in a wellbore may include a stator having a bore and a rotor disposed in the bore. Either or both of the rotor and the stator may include a layer that has an asymmetrical material property profile along at least a portion of a circumference of that layer.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: March 24, 2015
    Assignee: Baker Hughes Incorporated
    Inventors: Carsten Hohl, Helmut G. Benning
  • Patent number: 8951027
    Abstract: The invention concerns a vane cell machine having a stator and a rotor that is made of a first material, the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor, the stator and individual stationary side walls, the vanes having, at least at some contact faces with the rotor and the stator, a second material that interacts unfrictionally with the first material. It is endeavoured to keep the wear small. For this purpose, in a radially inner area, the side wall comprises a surface of a third material interacting unfrictionally with the first material and, in a radially outer area a surface made of the first material.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: February 10, 2015
    Assignee: Danfoss A/S
    Inventors: Hans Christian Petersen, Ove Thorboel Hansen, Lars Martensen, Palle Olsen, Erik Haugaard
  • Patent number: 8944789
    Abstract: A progressive cavity type motor or pump including a stator insert with a reinforcing agent dispersed in a manner to improve properties of the stator insert. The reinforcing agent may be a fiber, nanotube, metal, ceramic, or polymer. A dispersing agent may be used to obtain a homogenous distribution. A magnetic reinforcing agent may be incorporated into a stator insert. The stator insert is subjected to a magnetic field to orient the magnetic reinforcing agent in a particular orientation. The magnetic field may also reposition the magnetic reinforcing agent within the stator insert. The stator insert may be formed by injection molding, transfer, or compression molding among other methods.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: February 3, 2015
    Assignee: National Oilwell Varco, L.P.
    Inventors: Stefan Butuc, Jiinjen A. Sue, Harold A. Sreshta, Joshua A. Sicilian
  • Publication number: 20150017047
    Abstract: The present invention recites a method of fabricating a stator for a downhole motor, the method comprising the steps of providing a stator tube having an interior surface and applying a bonding agent to the interior surface of the stator tube. Additionally, a mandrel is positioned within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator. Furthermore, a reinforcing material is introduced into the stator tube to fill space between the mandrel and the interior surface of the stator tube and subsequently solidified to bond the reinforcing material to the interior surface of the stator tube. The mandrel is then removed from the bonded stator tube and reinforcing material such that a stator is fabricated.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 15, 2015
    Inventors: Hossein Akbari, Julien Ramier, Olivier Sindt
  • Patent number: 8905733
    Abstract: A progressing cavity pump/motor includes a stator (12) having a metal interior surface (14) and one or more spiraling internal lobes (16). The rotor (18) has a metal exterior surface (20) and one or more spiraling external lobes (22) for cooperating with the stator to form progressing cavities between the stator and the rotor during rotation of the rotor. At least one of the stator interior surface and the rotor exterior surface include a plurality of spaced grooves (30) in the respective surface, such that fluid flowing to a gap between the stator and the rotor is disrupted by the spaced grooves to reduce fluid leakage between the stator and the rotor.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: December 9, 2014
    Assignee: Robbins & Myers Energy Systems L.P.
    Inventor: Michael Guidry, Jr.
  • Patent number: 8888474
    Abstract: In an aspect, the disclosure provides an apparatus for use downhole. In one aspect the apparatus includes a rotor with lobes disposed in stator with lobes, wherein at least one of the contours of the rotor lobe and the contour of the stator lobe is asymmetric.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: November 18, 2014
    Assignee: Baker Hughes Incorporated
    Inventors: Carsten Hohl, Harald Grimmer
  • Patent number: 8858202
    Abstract: The rotary diaphragm pump has a flexible, resilient diaphragm band surrounding an elliptical frame within a case having four chambers surrounding an elliptical core. An articulating mechanism has a plurality of wheels traveling along the elliptical edges of the frame. The mechanism extends and retracts as the wheels move from maximum extension along the major axis of their elliptical tracks to minimum extension at the minor axis of their tracks. This mechanism drives a pair of actuator rollers along the inner surface of the diaphragm, periodically forcing the diaphragm into the surrounding chambers to produce the pumping action. Each chamber has an inlet port and an outlet port. The various ports may be interconnected to provide one or more multi-stage pumps in combination with one or more single-stage pumps, as desired. Two or more pumps may be joined in tandem to provide greater capacity from a single drive shaft.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: October 14, 2014
    Assignee: Kuwait University
    Inventor: Osama M. Al-Hawaj
  • Publication number: 20140294645
    Abstract: This disclosure describes new construction for rotary elements that find use in rotary displacement devices, e.g., positive displacement pumps and meters. The proposed construction may incorporate fibers, e.g., carbon fibers, disposed in a resin matrix. This construction can reduce the need to perform secondary processes that are necessary to utilize many rotary elements of conventional design. Moreover, examples of the rotary elements can improve operation of the displacement devices, e.g., by reducing resonance and allowing the displacement device to operate at increased speed.
    Type: Application
    Filed: March 29, 2013
    Publication date: October 2, 2014
    Applicant: Dresser Inc.
    Inventors: Dale Eugene Husted, Niravkumar V. Patel
  • Patent number: 8840385
    Abstract: A fluid pump includes a motor, an inner gear rotor and an outer gear rotor. The inner gear rotor is driven for rotation about an axis by the motor and has a plurality of outwardly extending teeth. The outer gear rotor has a plurality of inwardly extending teeth that are engaged by the teeth of the inner gear rotor so that the outer gear rotor is driven for rotation about a second axis when the inner gear rotor rotates. At least one of the inner gear rotor and the outer gear rotor is formed from a plastic material.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: September 23, 2014
    Assignee: TI Group Automotive Systems, L.L.C.
    Inventors: Wayne T. Lipinski, Joseph M. Ross
  • Patent number: 8821138
    Abstract: According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: September 2, 2014
    Assignee: The Texas A&M University System
    Inventors: Mark T. Holtzapple, George A. Rabroker
  • Patent number: 8777598
    Abstract: The present invention recites a method of fabricating a stator for a downhole motor, the method comprising the steps of providing a stator tube having an interior surface and applying a bonding agent to the interior surface of the stator tube. Additionally, a mandrel is positioned within the stator tube, the mandrel having an outer geometry that is complimentary to a desired inner geometry for the stator. Furthermore, a reinforcing material is introduced into the stator tube to fill space between the mandrel and the interior surface of the stator tube and subsequently solidified to bond the reinforcing material to the interior surface of the stator tube, The mandrel is then removed from the bonded stator tube and reinforcing material such that a stator is fabricated.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: July 15, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Hossein Akbari, Julien Ramier, Olivier Sindt
  • Patent number: 8764420
    Abstract: An eccentric-screw pump has an axially split stator having axially opposite intake and output ends and an elastomeric liner defining an axially throughgoing passage. Respective intake and output housings are releasably secured to the intake and output ends of the stator. An axially extending screw rotor in the passage has an end in the intake housing. A drive includes a rotatable universal joint having a pair of relatively swivelable parts in the intake housing. Respective generally complementary formations on the end of the rotor and on one of the universal-joint parts can fit axially together to rotationally couple the one universal-joint part with the rotor. A latch secures the formations axially together for angular force transmission between the one universal-joint part and the rotor.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: July 1, 2014
    Assignee: seepex GmbH
    Inventors: Dirk Overmeier, Marcel Griesdorn, Vsevolod Ryvkin
  • Patent number: 8740593
    Abstract: Vane pump mechanical losses are reduced by removing vane friction losses and replacing them with lower magnitude journal bearing fluid film viscous drag losses. A freely rotating cam ring is supported by a journal bearing. A relatively low sliding velocity is imposed between the cam ring and the vanes. This permits the use of less expensive and less brittle materials in the pump by allowing the pump to operate at much higher speeds without concern for exceeding vane tip velocity limits.
    Type: Grant
    Filed: February 16, 2009
    Date of Patent: June 3, 2014
    Assignee: Eaton Industrial Corporation
    Inventors: Martin A. Clements, Lowell D. Hansen
  • Publication number: 20140099226
    Abstract: The present disclosure relates to a simplified roots-type blower having an improved sound signature. The roots-type blower includes a rotor bore housing having a molded, one-piece polymeric construction. The rotor bore housing defines a first rotor bore and a second rotor bore. The rotor bore housing also defines a first bearing pocket corresponding to the first rotor bore and a bearing pocket corresponding to the second rotor bore axis. The rotor bore housing further defining a timing gear chamber.
    Type: Application
    Filed: December 2, 2013
    Publication date: April 10, 2014
    Inventors: William Nicholas EYBERGEN, Kelly Ann WILLIAMS
  • Patent number: 8678798
    Abstract: A rotary pump device is provided in which a drive shaft is inserted into a center hole of a cylinder that forms rotor chambers, and into outer rotors and inner rotors of rotary pumps. In the rotary pump device, seal mechanisms that include hollow-shaped resin members and annular rubber members are arranged on an opposite side to the cylinder with respect to the rotary pumps. Metal rings are arranged in hollow portions of the resin members in the seal mechanisms so that the drive shaft is inserted into an inner periphery of the metal rings with a minimum clearance.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: March 25, 2014
    Assignees: Advics Co., Ltd., Denso Corporation
    Inventors: Yuki Nakamura, Kunihito Ando, Nobuhiko Yoshioka, Takahiro Naganuma, Tomoaki Kawabata
  • Patent number: 8579619
    Abstract: The invention relates to an internal gear pump for a braking system, in the pump housing of which an inner toothed hollow wheel and a gearwheel engaging in the toothing of the hollow wheel are mounted to rotate about parallel axes. The toothing thereof defines a tapering roughly crescent-shaped pump chamber, in which a filling piece is arranged supported along the length thereof. The circumferential surfaces of the filling piece closely correspond to the head diameter of the inner toothing of the hollow wheel or the gearwheel toothing and contact in a sealing manner with several tooth crowns covered thereby. A radial supporting force acts over a longitudinal range of the filling piece for improved sealing of a circumferential surface of the filling piece against the tooth crowns supporting the circumferential surface.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: November 12, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Rene Schepp, Norbert Alaze
  • Patent number: 8550792
    Abstract: A device configured for converting energy includes a first surface, a second surface configured for moving with respect to the first surface during operation of the device, and a coating disposed on at least one of the first surface and the second surface. The coating includes a first layer of a ceramic alloy represented by the general formula AlMgB14—X, wherein X is present in an amount of from 0 to 70 parts by weight based on 100 parts by weight of the ceramic alloy and is a doping agent selected from the group of Group IV elements and borides and nitrides thereof, and a second layer disposed on the first layer and including carbon in a gradient concentration. The coating has a hardness of from 10 to 20 GPa and a coefficient of friction of less than or equal to 0.12.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: October 8, 2013
    Assignee: Eaton Corporation
    Inventors: Lyudmila Mikhaylovna Solovyeva, Kyle S. Jansson, Alaa AbdelAzim Elmoursi, Dong Zhu, Robert Milner, Earl Eugene Daugherty, Clifton Baxter Higdon, Kamel Abdel-Khalik Elagamy, Aaron Michael Hicks
  • Patent number: 8444901
    Abstract: The present application discloses a progressive cavity motor or pump component, either stator or rotor, which provides a high glass transition temperature polymeric surface on the component which becomes resilient at or below the expected operating temperature of the motor or pump, but which remains solid at ambient temperatures, along with a method of fabricating either a stator or a rotor with such surface characteristics. Since the surface becomes resilient, the progressive cavity pump operates efficiently at temperatures above the glass transition temperature of the selected polymeric surface.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: May 21, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: Olivier Sindt, Hossein Akbari, Julien Ramier
  • Patent number: 8444405
    Abstract: A fluid device includes a housing and a rotor assembly disposed in the housing. The rotor assembly includes a core and a coating. The core has a first surface, an oppositely disposed second surface and an outer peripheral surface that extends between the first and second surfaces. The core defines a bore that extends through the first and second surfaces. The coating coats at least a portion of the core. The coating is a water-swellable plastic material.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: May 21, 2013
    Inventors: Matthew Hollister, Doug Purdy, Dustin Featherstone
  • Patent number: 8439658
    Abstract: A progressing cavity pump assembly utilizes a reinforced upper section of the stator rubber helix. The pump stator is located at the end of a string of tubing. The reinforced upper section of the stator rubber helix is strong enough, whether reinforced by mechanical means or by strengthening the rubber matrix chemically, so as not to allow the passage of a stop located above or on the top of the pump rotor. The rotor is lowered on a string of rods until the stop above or on top of the rotor lands onto the reinforced upper section of the stator rubber helix. The rotor is then repositioned away from the stator helix a predetermined distance before pump operation begins with rod string rotation.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: May 14, 2013
    Assignee: Baker Hughes Incorporated
    Inventor: Nicholas D. Johnson
  • Publication number: 20130108499
    Abstract: The invention concerns a vane cell machine having a stator and a rotor that is made of a first material, the rotor having guides comprising radially displaceable vanes that rest on an inside of the stator and border work chambers at each axial end of the rotor together with the rotor, the stator and individual stationary side walls, the vanes having, at least at some contact faces with the rotor and the stator, a second material that interacts unfrictionally with the first material. It is endeavoured to keep the wear small. For this purpose, in a radially inner area, the side wall comprises a surface of a third material interacting unfrictionally with the first material and, in a radially outer area a surface made of the first material.
    Type: Application
    Filed: October 24, 2012
    Publication date: May 2, 2013
    Applicant: Danfoss A/S
    Inventors: Hans Christian Petersen, Ove Thorboel Hansen, Lars Martensen, Palle Olsen, Erik Haugaard