Intermeshing Peripheral Surfaces Patents (Class 418/166)
  • Patent number: 11280334
    Abstract: A fluid delivery system having at least one fluid storage device and a pump with at least one fluid driver with a flow-through shaft that has a through-passage. The pump includes a casing, and at least one fluid driver having a prime mover and at least one fluid displacement member. A shaft of the prime mover and/or a shaft of the fluid displacement member and/or a common shaft of the prime mover/fluid displacement member (depending on the configuration of the pump) is a flow-through shaft with a through-passage configuration that allows fluid communication between at least one port of the pump and the at least one fluid storage device.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: March 22, 2022
    Assignee: PROJECT PHOENIX, LLC
    Inventor: Thomas Afshari
  • Patent number: 10900484
    Abstract: A variable oil pump includes a pump housing, an oil pump rotor housed in the pump housing and rotationally driven, an adjustment member housed in the pump housing and adjusting an oil discharge amount from the oil pump rotor by being displaced due to a drive force while rotatably holding the oil pump rotor from an outer peripheral side, and a guide portion including a groove provided in the adjustment member and a pin provided on the pump housing and engaging with the groove. The guide portion guides relative displacement of the adjustment member with respect to the pump housing by engaging the groove and the pin with each other, and an inner surface of the groove and an outer surface of the pin come into line contact with each other along a direction in which the pin extends at an initial position where the adjustment member starts its displacement.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: January 26, 2021
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventor: Yuki Nishida
  • Patent number: 10378541
    Abstract: A compressor is provided and may include a shell, a motor assembly, a compression mechanism, a pump housing, and at least one pump. The shell includes a fluid disposed therein. The motor assembly is disposed within the shell and is drivingly engaged with a driveshaft. The compression mechanism is driven by the driveshaft. The pump housing is rotatably disposed within the shell for rotation relative to the driveshaft and relative to the shell. The at least one pump is rotatably disposed within the pump housing such that the at least one pump is in driving engagement with the driveshaft.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: August 13, 2019
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Michael M. Perevozchikov
  • Patent number: 9938977
    Abstract: A compressor is provided and may include a shell, a motor assembly, a driveshaft, a pump housing, and a pumping mechanism. The motor assembly may be disposed within the shell. The driveshaft may be drivingly engaged with the motor assembly. The pump housing may be rotatably supported by the driveshaft for rotation relative to the shell. The pumping mechanism may be disposed within the pump housing and rotating with or orbiting about the driveshaft.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: April 10, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, Michael M. Perevozchikov
  • Patent number: 9903365
    Abstract: Provided is a fluid-pump inner rotor that can be easily fitted to an outer rotor. This fluid-pump inner rotor includes a rotor member having a through hole along a rotational axis and a shaft member fitted in the through hole. Fitting strength between a first hole region provided in an inner face of the through hole of the rotor member which region extends along a rotational axis of the rotor member from one of end faces thereof perpendicular to this rotational axis and a first shaft region provided in an outer face of the shaft member is set greater than fitting strength between a second hole region provided in the inner face of the through hole of the rotor member and a second shaft region provided in the outer face of the shaft member.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: February 27, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Atsuo Isoda, Fumihiko Toyoda
  • Patent number: 9803740
    Abstract: A torque transfer mechanism for a vehicle, including a housing and a pump disposed therein. The housing includes an exterior surface, an interior surface, and an interior compartment. The interior surface of the housing includes at least one pocket formed therein with the at least one pocket having a plurality of pocket surfaces, which define an interior area. The pump includes a pump portion and a pump housing. The pump housing includes at least one projecting tab extending outwardly therefrom. The at least one projecting tab disposed within the at least one pocket to secure the pump within the transfer case housing. The at least one projecting tab has a pump crown disposed thereover, with the pump crown engaging each of the plurality of pocket surfaces and substantially filling out the interior area.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: October 31, 2017
    Assignee: MAGNA POWERTRAIN OF AMERICA, INC.
    Inventor: Daniel Drill
  • Patent number: 9039397
    Abstract: A rotor for an oil pump according to the present invention is a rotor that includes an inner rotor configured by teeth, each of which has a plurality of ellipses or circles, and an outer rotor that is disposed on the outside of the inner rotor and has one tooth more than the inner rotor, wherein, in a tooth of the inner rotor, a tooth top and a tooth root of a drive-side half-tooth region extending from the tooth top to the tooth root and a tooth top and a tooth root of a non-drive-side half-tooth region extending from the tooth top to the tooth root are each configured by a different ellipse or a circle. A circumferential axis along a circumferential direction of the ellipse or circle configuring the tooth top is longer in the non-drive-side half-tooth region than in the drive-side half-tooth region.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: May 26, 2015
    Assignee: Yamada Manufacturing Co., Ltd.
    Inventors: Kenichi Fujiki, Masato Izutsu, Takatoshi Watanabe
  • Patent number: 9033107
    Abstract: An arrangement of an oil pump (8) and its drive in a transmission (1) that has a transmission housing (2) and at least one transmission shaft (3). The oil pump (8) is arranged coaxially with the at least one transmission shaft (3). The oil pump (8) is arranged on and can be driven by the at least one transmission shaft (3).
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: May 19, 2015
    Assignee: ZF Friedrichshafen AG
    Inventors: Thomas Schneider, Uwe Firzlaff
  • Patent number: 9028231
    Abstract: Described herein is a device comprising: a chamber wall comprising outer and inner surfaces, wherein the inner surface encloses a lobed chamber with a plurality of lobes and the inner surface comprises segments of arcuate surfaces, each of the segments of arcuate surfaces being tangent with its immediate neighboring segments, and wherein the chamber wall further comprises channels connecting the outer surface and the inner surface of the chamber wall and/or channels through an end surface of the chamber wall; a lobed piston configured to translate along a circular path relative to the chamber wall, the outer surface of the piston and the inner surface of the chamber wall engaged during translation; and holes fluidly connected to the lobed chamber and configured to allow fluid discharge from the lobed chamber through the holes and to prevent fluid flow into the lobed chamber through the holes.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: May 12, 2015
    Inventor: Yaode Yang
  • Patent number: 9004889
    Abstract: An internal gear pump includes an inner rotor having n teeth and an outer rotor having (n+1) teeth. A tooth profile of the inner rotor is an envelope of a group of locus circles (13) each having a diameter C and having a center on a trochoidal curve (T), the trochoidal curve being drawn along a locus of a fixation point, which is located distant from a center of a rolling circle (12) by e, when the rolling circle (12) rolls along a base circle (11) without sliding. A tooth profile of the outer rotor is an envelope of a group of tooth-profile curves of a formation inner rotor, the envelope being obtained by first drawing the formation inner rotor in which a diameter of the locus circle (13) is equal to C? determined from expression (C?t), revolving a center (OI) of the formation inner rotor by one lap along a circle (S) having a diameter (2e) and centered on a center (OO) of the outer rotor, and rotating the formation inner rotor 1/n times during the revolution.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: April 14, 2015
    Assignee: Sumitomo Electric Sintered Alloy Ltd.
    Inventors: Masato Uozumi, Toshiyuki Kosuge
  • Patent number: 9004891
    Abstract: A pair of Northey rotors for a vacuum pump, in which each rotor comprises two opposing, substantially parallel faces, and a peripheral surface located between the opposing faces. In order to reduce damage caused by pumping a gas stream containing liquid or solid particulates, a plurality of grooves is located on the peripheral surface for accommodating the particulates.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: April 14, 2015
    Assignee: Edwards Limited
    Inventors: Neil Turner, Malcolm William Gray, Jack Raymond Tattersall
  • Patent number: 8998597
    Abstract: Described herein is a device comprising: a chamber wall comprising outer and inner surfaces, wherein the inner surface encloses a lobed chamber with a plurality of lobes and the inner surface comprises segments of arcuate surfaces, each of the segments of arcuate surfaces being tangent with its immediate neighboring segments, and wherein the chamber wall further comprises channels connecting the outer surface and the inner surface of the chamber wall and/or channels through an end surface of the chamber wall; a lobed piston configured to translate along a circular path relative to the chamber wall, the outer surface of the piston and the inner surface of the chamber wall engaged during translation and forming a fluid-tight seal between some portions of the outer surface of the piston and the inner surface of the chamber wall such that enclosed spaces are formed between the piston and the chamber wall.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: April 7, 2015
    Inventor: Yaode Yang
  • Patent number: 8974207
    Abstract: This invention relates to a gear pump (1) for delivering a fluid, comprising an externally toothed gearwheel (3) rotatably mounted on a journal (4), and an internally toothed annular gear (2), the gearwheel and gear meshing so as to produce a delivery action, and arranged together with an electrically commutatable stator (7) inside a housing (5). The stator (7) extends concentrically around the annular gear (2) and cooperates with a magnetic ring (6) in order to generate an electromotive force and the magnetic ring (6) together with the annular gear (2) rotate in order to produce the delivery action. The annular gear (2) is mounted by means of a sliding bearing (25).
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: March 10, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Stanislaw Bodzak
  • Publication number: 20150010420
    Abstract: An oil pump of the present invention includes a housing (10, 20) which includes an inlet port (44b) to suck oil, a discharge port (52) to discharge oil, and a purge port (24) to eject air-mixed oil, an inner rotor (71, 81) which is arranged in the housing as being rotatable about a predetermined axis line (S), an outer rotor (72, 82) which is arranged in the housing to be rotated as being interlocked with the inner rotor, and a filter member (90) which is arranged at the housing from the outside thereof to prevent foreign matter from entering through the purge port. According to the above, entering of foreign matter and the like can be prevented even when oil is sucked through the purge port.
    Type: Application
    Filed: January 31, 2013
    Publication date: January 8, 2015
    Inventor: Hiroyuki Oda
  • Patent number: 8920148
    Abstract: An oil pump having an inner rotor with of external teeth; an outer rotor that is eccentrically provided and has internal teeth that mesh with the inner rotor external teeth, and an oil pump body that accommodates the outer and inner rotors. By rotationally driving the inner rotor to increase and decrease a space between the internal and the external teeth, an intake stroke suctions hydraulic oil from the oil pump body and a discharge stroke discharges the suctioned hydraulic oil to a discharge port formed in the oil pump body. Between the intake and discharge strokes, a confinement stroke cuts off the suctioned hydraulic oil and confines the suctioned hydraulic oil in the space, and a compression stroke reduces the space and compresses the confined hydraulic oil. Further, an interval is set between a finish end portion of the intake port of the oil pump body and a start end portion of the discharge port such that a rotation angle of the inner rotor during the compression stroke is 21 to 27 degrees.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: December 30, 2014
    Assignees: Aisin AW Co., Ltd., Toyooki Kogyo Co., Ltd.
    Inventors: Masateru Nakagawa, Nobukazu Ike, Takuro Iwase, Tomohiro Umemura, Noriyasu Ariga, Katsunori Ishikawa, Masashi Narita
  • Patent number: 8876504
    Abstract: An object is to meet the demands for increasing the number of teeth of a rotor in an internal gear pump while maintaining a theoretical discharge amount by using an equivalent body configuration so as to enhance the pump performance relating to discharge pulsation due to the increased number of teeth. In a pump rotor 1 formed by combining of an inner rotor (2) having N teeth and an outer rotor (3) having (N+1) teeth and disposing the rotors eccentrically relative to each other, the relational expression ?Dmax<1.7e·sin(?/180)/sin {?/(180·N)} is satisfied, ?Dmax being a maximum value of a working pitch diameter of the inner rotor (2) and the outer rotor (3), and a working position (G) of the inner rotor (2) and the outer rotor (3) is always located rearward of an eccentric axis (CL) in a rotating direction of the rotor.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: November 4, 2014
    Assignee: Sumitomo Electric Sintered Alloy, Ltd.
    Inventors: Masato Uozumi, Harumitsu Sasaki, Kentaro Yoshida
  • 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
  • Publication number: 20140255236
    Abstract: An internal gear pump for a hydraulic vehicle brake system includes a bearing formed for a pump shaft in a tubular form. The bearing is integrally formed with a housing of the internal gear pump. The bearing is configured to mount a pinion of the internal gear pump rotatably on the bearing. The internal gear pump also includes a catch configured to connect the pinion to the pump shaft for conjoint rotation.
    Type: Application
    Filed: March 10, 2014
    Publication date: September 11, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Massimiliano Ambrosi, Michael Eisenlauer, Rene Schepp, Norbert Alaze, Edgar Kurz
  • Patent number: 8807972
    Abstract: Housingless positive displacement pump assembly comprises one or more vane or gerotor type housingless positive displacement pump units, each comprising pump unit components. One or more retaining rods extend through axially aligned holes in a mounting flange at one end of the pump assembly and the pump unit components to hold the pump unit components in stacked relation to one another and connect the pump assembly to the mounting flange.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: August 19, 2014
    Assignee: Hydro-Aire Inc.
    Inventors: Michael A. Reighard, Daniel T. DePauw, David A. Sedlak
  • Patent number: 8801411
    Abstract: In an internal-gear type fluid device, guide teeth are formed by inner teeth at an outer rotor, and vane portions extending in the width direction are formed at tooth tip portions of the guide teeth. Further, guide teeth are formed by outer teeth at the inner rotor, and vane portions extending in the width direction are formed at tooth tip portions of the guide teeth. Since the vane portions are thus formed at the outer rotor and the inner rotor, the confinement timing when oil confinement is completed can be synchronized with the release timing when oil release is started, by adjusting, for example, the thickness of the vane portions without changing the profile of the guide teeth.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 12, 2014
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Osamu Mori
  • Patent number: 8784085
    Abstract: Disclosed is a uniaxial eccentric screw pump that can prevent the life of a bearing sliding portion from decreasing due to a thrust load applied from a high pressure side to a low pressure side. An external thread-like motor directly coupled with a driving shaft is rotated and eccentrically moved with respect to the axis of a stator to deliver a fluid from an intake side to a discharge side. The pump is provided at an end of the discharge side of the motor and extends toward the discharge side in the axial direction of the stator. The uniaxial eccentric screw pump includes an annular small-diameter portion and a seal member. The seal member is in sliding contact with the outer surface of the small-diameter portion and seals the end of a sliding portion between a self-lubricating bearing on the discharge side and the stator.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: July 22, 2014
    Assignee: Furukawa Industrial Machinery Systems Co., Ltd.
    Inventor: Kazutomo Hayashimoto
  • Patent number: 8734140
    Abstract: A reversible gerotor pump for a machine having a drive shaft is provided, the pump including a housing, an offset ring, and an inner and outer gear. The offset ring is disposed in the housing and includes a tab extending radially from an outer periphery. The outer periphery of the offset ring defines a first axis in common with the axis of a drive shaft. The inner periphery of the offset ring defines a second axis that is slightly offset from the second axis. The axis of the outer gear moves relative to the axis of the inner gear to allow pumping action in both rotational directions using the same suction and line cavities for both directions.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: May 27, 2014
    Assignee: GM Global Technology Operations, LLC
    Inventors: Daryl A. Wilton, James M. Hart, John C. Schultz, David R. Staley
  • Patent number: 8721310
    Abstract: A rotary motor for compressible media, containing at least one impellor and at least one stator mounted between two mutually coupled and concurrently mounted bearing plates, adjusted for a mounting of double sided led out driving shaft of the impellor on which is mounted a rotary piston mounted in a chamber of the stator equipped with sealing lids, wherein the rotary piston with elliptical crosscut is mounted into symmetrically shaped triangular chamber equipped with rounded peaks, when each of them is equipped with at least one port for an entry and an exit of the compressible media, in way that a lengthwise axis (op) of the rotary piston which is identical to the driving shaft axis is due to reach of simultaneous circular movement of the stator in contra direction to the rotary piston rotating namely at parallel advance of all points of the stator along the circle with eccentricity radius (e) and is moved with regard to a lengthwise axis (os) of the chamber of the stator of the value of an eccentricity (e),
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: May 13, 2014
    Inventor: Jiri Dvorak
  • Patent number: 8714951
    Abstract: A rotary chambered fluid energy-transfer device includes a housing with a central portion having a bore formed therein and an end plate forming an arcuate inlet passage, with a radial height and a circumferential extent. The device also includes an outer rotor rotatable in the central portion bore with a female gear profile formed in a radial portion defining a plurality of roots and an inner rotor with a male gear profile defining a plurality of lobes in operative engagement with the outer rotor. A minimum radial distance between an outer rotor root and a corresponding inner rotor lobe define a duct end face proximate the end plate, wherein the duct end face has a radial height substantially equivalent to the inlet passage radial height at a leading edge of the inlet passage.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: May 6, 2014
    Assignee: Ener-G-Rotors, Inc.
    Inventor: George A. Yarr
  • Patent number: 8668481
    Abstract: A pump assembly, in particular for lubrication in helicopters, has a casing, the lateral wall of which defines an intake port and a delivery port; and the casing houses two rotary pumps powered by a drive shaft via a motion-splitting transmission.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: March 11, 2014
    Assignee: Agustawestland S.p.A.
    Inventor: Andrea Gabrielli
  • Patent number: 8632323
    Abstract: A gear pump rotor is provided including a combination of an inner rotor and an outer rotor whose numbers of teeth are different by one, and the discharge amount of the pump is increased by an increase of the tooth depth. At least one of an addendum curve and a dedendum curve of an inner rotor is formed by a locus of one point on formation circles that satisfy moving conditions that the formation circles move from moving start points to moving end points while changing the distances from an inner rotor center to the centers of the formation circles. The centers of the formation circles move by a distance in the radial direction of a base circle, and the formation circles rotate by an angle at a constant angular velocity in the same directions of the moving directions of the formation circles.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: January 21, 2014
    Assignee: Sumitomo Electric Sintered Alloy, Ltd.
    Inventors: Masato Uozumi, Harumitsu Sasaki, Kentaro Yoshida, Yuichirou Egami
  • Publication number: 20130323106
    Abstract: A rotor for an oil pump according to the present invention is a rotor that includes an inner rotor configured by teeth, each of which has a plurality of ellipses or circles, and an outer rotor that is disposed on the outside of the inner rotor and has one tooth more than the inner rotor, wherein, in a tooth of the inner rotor, a tooth top and a tooth root of a drive-side half-tooth region extending from the tooth top to the tooth root and a tooth top and a tooth root of a non-drive-side half-tooth region extending from the tooth top to the tooth root are each configured by a different ellipse or a circle. A circumferential axis along a circumferential direction of the ellipse or circle configuring the tooth top is longer in the non-drive-side half-tooth region than in the drive-side half-tooth region.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 5, 2013
    Applicant: YAMADA MANUFACTURING CO., LTD
    Inventors: Kenichi Fujiki, Masato IZUTSU, Takatoshi WATANABE
  • Patent number: 8579618
    Abstract: An internal gear pump (1) is proposed for conveying a fluid by a driven pump gear wheel (3) and a ring gear (4), as a gear pair residing in an enclosure, which are, for instance, meshing and hereby generating a sealed area. Hereby, viewed cross-sectionally, a sickle shaped part (5) is provided for sealing the free space, located nearly opposite to the sealed area, whereby a first end piece (12) and a second end piece (13) of the part (5) are assigned to a high pressure area. In accordance with the invention, the two end pieces (12, 13) of the part (5) are constructed differently.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: November 12, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Muneer Abu Samra, Gernot Riegert, Florian Steinberger
  • Patent number: 8506269
    Abstract: A balance shaft module equipped with a dual pump including a main oil pump and a sub-oil pump may include a pump rotor rotatably coupled to a housing, a discharge space formed in the housing for discharging oil in the sub-oil pump, a pulse chamber formed in the housing to increase the discharge space, wherein the oil discharged through the discharge space is merged with the oil flowing through the pulse chamber such that discharge pulse pressure is reduced, and an eccentric washer having a discharging opening space formed by cutting off a portion inward from the outside, wherein the discharge opening space of the eccentric washer is connected to the discharge space to fluid-communicate with the discharge space of the pump rotor.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: August 13, 2013
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Gabseok Ko
  • Patent number: 8500423
    Abstract: A rotary fluid pressure device includes a gerotor gear set having a ring gear and a star gear orbitally moveable about a longitudinal axis relative to the ring gear. The star gear includes an annular spacer ring disposed at one end of the star gear. A brake pin is moveable along the longitudinal axis into and out of interlocking engagement with the annular spacer ring. The brake pin includes an outer surface for engaging an interior surface of the spacer ring. The outer surface of the brake pin and the interior surface of the spacer ring are each angled relative to the longitudinal axis to engage each other in a tapered engagement, to generate an axial force along the longitudinal axis to move the brake pin out of engagement with the star gear in response to a torque being applied to the star gear.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: August 6, 2013
    Assignee: Eaton Corporation
    Inventors: Hisatoshi Sakurai, Yasukazu Mishima
  • Publication number: 20130149181
    Abstract: A distributor assembly (12) includes a distributor housing (102) and a valve selector plate (104). The distributor housing (102) includes an axial bore (106) extending in an axial direction through the distributor housing. The valve selector plate (104) is disposed in the axial bore (106) and is rotatable around a rotational axis (130) parallel to the axial direction between a first orientation and a second orientation. The valve selector plate (104) includes a first substantially planar face (132), a second substantially planar face (134), axial passages (136) radially offset from the rotational axis (130) and extending through the valve selector plate (104) from the first face (132) to the second face (134), and at least one fluid blocking section (138) configured to block axial flow through the distributor assembly. Each fluid blocking section (138) is interposed between and radially aligned with the axial passages (136) with respect to the rotational axis (130).
    Type: Application
    Filed: December 7, 2010
    Publication date: June 13, 2013
    Applicant: WHITE (CHINA) DRIVE PRODUCTS CO., LTD.
    Inventors: Yan Jingzhi, Li Linhua, Shi Qingguo
  • Publication number: 20130133765
    Abstract: A fuel pump assembly may include a housing and a fuel pump within a fuel pump cavity. The fuel pump may include a motor, a pumping element driven for rotation by the motor, a pump body that maintains the position of the pumping element relative to the motor and the housing, and a flexible seal. The seal may be disposed between the pump body and the housing to provide a fluid tight seal between them. A portion of the seal may be disposed radially outwardly of a distal end of the pump body to radially position the pump body within the fuel pump cavity and a portion of the seal may be disposed axially outwardly of the distal end of the pump body to axially position the pump body within the fuel pump cavity.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Applicant: WALBRO ENGINE MANAGEMENT, L.L.C.
    Inventors: Kevin L. Israelson, Douglas W. Salowitz, JR., David L. Speirs
  • Publication number: 20130115124
    Abstract: An internal gear pump in which an inner rotor and an outer rotor are arranged in a rotor housing chamber. A deepest meshing section is located in the vicinity on a line connecting a center of the inner rotor and a center of the outer rotor. A center of the rotor housing chamber is offset, from a position in which the center and the center of the outer rotor coincide with each other, to the deepest meshing section side by an amount smaller than a tip clearance, which is a gap between the tooth tip of the inner rotor and the tooth tip of the outer rotor in the vicinity of a seal land between a terminal end side of an intake port and a start end side of a discharge port.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 9, 2013
    Applicant: YAMADA MANUFACTURING CO., LTD.
    Inventor: YAMADA MANUFACTURING CO., LTD.
  • Publication number: 20130089453
    Abstract: An oil pump includes a first spill passage formed on a side surface (60) of a pump chamber (58) to communicate a hydraulic pressure chamber (54) with a first high pressure discharge passage (68) when the entire hydraulic pressure chamber (54) is positioned between the first high pressure discharge passage (68) and a first low pressure discharge passage (70). Therefore, when the hydraulic pressure chamber (54) passes between the first high pressure discharge passage (68) and the first low pressure discharge passage (70), the hydraulic pressure inside the predetermined hydraulic pressure chamber (54) escapes to the first high pressure discharge passage (68) through a first spill passage (76), so a hydraulic pressure value inside the hydraulic pressure chamber (54) is maintained at the pressure value inside the first high pressure discharge passage (68).
    Type: Application
    Filed: June 17, 2011
    Publication date: April 11, 2013
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYOOKI KOGYO CO., LTD., JTEKT CORPORATION, AISIN AW CO., LTD.
    Inventors: Yusuke Ogata, Yoshihiro Mizuno, Masashi Hattori, Masahiro Ito, Naoki Okoshi, Kenichi Mori, Masahiko Suzuki, Fumitake Suzuki, Hidenobu Yamaguchi, Haruhiko Shibata
  • Publication number: 20130045125
    Abstract: A trochoidal gear pump or engine uses a coaxial hub with an outer and/or inner rotor and an associated rolling element bearing assembly that uses pre-loaded bearings to precisely set the rotational axis and/or the axial position of the rotor with which it is associated. This allows the fixed-gap clearance between the rotor surfaces and the housing or other rotor surfaces to be set at a distance that minimizes operating fluid shear forces and/or by-pass leakage and eliminates gear tooth wear thus preserving effective chamber to chamber sealing. The device is useful in handling gaseous and two-phase fluids in expansion/contracting fluid engines/compressors and can incorporate an output shaft for a integrated condensate pump for use with Rankine cycles. A vent from the housing cavity to a lower pressure input or output port regulates built-up fluid pressure in the housing, thereby optimizing the efficiency of the device by controlling bypass leakage.
    Type: Application
    Filed: May 5, 2011
    Publication date: February 21, 2013
    Applicant: Ener-G-Rotors ,Inc.
    Inventor: George A. Yarr
  • Publication number: 20130034462
    Abstract: A rotary chambered fluid energy-transfer device includes a housing with a central portion having a bore formed therein and an end plate forming an arcuate inlet passage, with a radial height and a circumferential extent. The device also includes an outer rotor rotatable in the central portion bore with a female gear profile formed in a radial portion defining a plurality of roots and an inner rotor with a male gear profile defining a plurality of lobes in operative engagement with the outer rotor. A minimum radial distance between an outer rotor root and a corresponding inner rotor lobe define a duct end face proximate the end plate, wherein the duct end face has a radial height substantially equivalent to the inlet passage radial height at a leading edge of the inlet passage.
    Type: Application
    Filed: August 5, 2011
    Publication date: February 7, 2013
    Inventor: George A. Yarr
  • Publication number: 20120328464
    Abstract: An oil pump is increased to inhibit noise generation and durability is also improved. The oil pump includes a pump body, an inner rotor having outer teeth, and an outer rotor having inner teeth. A maximum partition portion is formed between a trailing end side of an intake port and a leading end side of a discharge port in a rotor chamber of the pump body. Among cells constituted by the outer teeth of the inner rotor and the inner teeth of the outer rotor, a central cell positioned in the location of the maximum partition portion and adjacent cells positioned before and after the central cell in the direction of rotation are sealed by mutual contact of the outer teeth and the inner teeth. The outer teeth and the inner teeth constituting cells other than the central cell and adjacent cells are not in contact with each other.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 27, 2012
    Applicant: Yamada Manufacturing Co., Ltd.
    Inventors: Kenichi Fujiki, Masato Izutsu
  • Publication number: 20120315177
    Abstract: An engine oil pump, may include a plunge pool formed in a pump case and preventing a rapid change in pressure of oil when the oil may be discharged through an oil discharge portion that may be a cross-section expansion section by generating vortex flux when oil, which may be pumped into an oil pocket by rotation of an inner rotor and an outer rotor, temporarily collects before being discharged after passing a cross-sectional reduction section, and reducing the pressure by consuming the energy of the oil increasing in pressure by the vortex flux.
    Type: Application
    Filed: October 31, 2011
    Publication date: December 13, 2012
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Byunghwan JUNG, Wonjo Jeong
  • Publication number: 20120308423
    Abstract: An oil pump includes: a rotor chamber; an outer rotor; and an inner rotor. A partition surface between a starting end side of the intake port and a terminal end side of the discharge port is set as a first seal land. An intake groove portion that projects from the starting end side of the intake port toward the terminal end side of the discharge port and a discharge groove portion that projects from the terminal end side of the discharge port toward the starting end side of the intake port are formed in positions which are located on the first seal land. The intake groove portion and the discharge groove portion are provided in intermediate tooth height direction positions of a meshing location between the inner rotor and the outer rotor.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 6, 2012
    Applicant: Yamada Manufacturing Co., Ltd.
    Inventors: Kenichi FUJIKI, Masato Izutsu
  • Publication number: 20120251371
    Abstract: In a gear pump in which a driving rotor that is driven by a driving source meshes with a driven rotor that is driven by the driving rotor for rotation to pump a hydraulic oil, only one of the driving rotor and the driven rotor is given the steam treatment while the other remains untreated.
    Type: Application
    Filed: December 9, 2010
    Publication date: October 4, 2012
    Applicants: Yamada Manufacturing Co., Ltd., Honda Motor Co., Ltd.
    Inventors: Hideo Nirasawa, Shigeru Kanehara, Shinichi Hirai, Kosuke Yamane, Masahiko Shinohara
  • Publication number: 20120244028
    Abstract: The disclosure relates to an internal gear pump for a slip-regulated hydraulic vehicle braking system, comprising one pressure piece on either side of the gear wheels of said pump. According to the disclosure, a disk consisting of wear-resistant material is arranged between the pressure piece and the gear pump. The pressure pieces can be manufactured from plastic to reduce costs.
    Type: Application
    Filed: September 27, 2010
    Publication date: September 27, 2012
    Applicant: ROBERT BOSCH GMBH
    Inventors: Rene Schepp, Norbert Alaze
  • Publication number: 20120244027
    Abstract: The invention has: a housing; a pump section formed of a drive gear unit and a driven gear unit; a main flow channel through which oil pressure is applied to the driven gear unit in a discharge volume reduction direction; a first branching flow channel through which oil pressure that assists oil pressure from the main flow channel is applied; a second branching flow channel through which oil pressure is applied to the driven gear unit in a discharge increase direction; a first flow channel control section; a second flow channel control section; and a spring that elastically urges the driven gear unit in a discharge increase direction. The first flow channel control section and the second flow channel control section can perform switching control in accordance with each increase or decrease of engine revolutions and in pressure.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: Yamada Manufacturing Co., Ltd.
    Inventors: Manabu WATANABE, Junichi Miyajima, Masato Izutsu, Tokatoshi Watanabe
  • Publication number: 20120224991
    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: Application
    Filed: February 27, 2012
    Publication date: September 6, 2012
    Applicant: TI Group Automotive Systems, L.L.C.
    Inventors: Wayne T. Lipinski, Joseph M. Ross
  • Publication number: 20120219442
    Abstract: A pump device for a frozen product machine includes a pump casing, first and second rotor gear, and a sealing arrangement. The first and second rotor gears fit in a pumping cavity of the pump casing in a rotatably movable manner that creates a suction effect for pumping and mixing liquid mixture with air to produce a mixture product. The sealing arrangement includes a plurality of sealing elements provided between two outer side surfaces of the first and second rotor gears and inner side surfaces of the pump casing for ensuring the liquid mixture and air being sealed and mixed within the pumping cavity through the first and second rotor gears and for preventing the first and second rotor gears from being direct-surface contact of the pump casing.
    Type: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Inventors: Chundong Dong, Lingyu Dong
  • Patent number: 8251684
    Abstract: A trochoid pump, comprising a driving shaft, wherein a drive gear comprising of a bevel gear is fixed on one end thereof and an inner rotor is penetrated onto the other end thereof, an outer rotor, the center of which is decentered to the inner rotor, wherein both rotors are covered with the cap and the casing, a first regulatory structure, wherein the driving shaft or a means of control fixed on the driving shaft regulates an one-way movement to the casing, a second regulatory structure, wherein an end face on the other side of the driving shaft is engaged with one end of the cap and regulates the other way movement of the cap, wherein the thrust of the driving shaft is axially regulated by the first regulatory structure and by the second regulatory structure.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: August 28, 2012
    Assignee: Yanmar Co., Ltd.
    Inventors: Yuji Shiba, Akio Ikeda, Satoshi Hattori
  • Publication number: 20120213657
    Abstract: A fluid pump having a pump motor, pump housing, and pump seal enclosure disposed between the pump motor and the pump housing. A pump drive shaft is rotatably driven by the pump motor and extends through the pump seal enclosure and a drive shafting opening into a pumping chamber of the pump housing. A drive shaft seal assembly is disposed within the pump seal enclosure and includes a spring seat, rotary ring, stationary ring, and compressible spring each disposed coaxially with the drive shaft. The spring seat includes a first alignment mechanism and the rotary ring includes a second alignment mechanism for engaging the first alignment mechanism. The stationary ring is fastened to the pump seal enclosure adjacent the drive shaft opening, and the compressible spring biases the rotary ring against the stationary ring.
    Type: Application
    Filed: February 16, 2012
    Publication date: August 23, 2012
    Applicant: Standex International Corporation
    Inventors: Robert R. Kimberlin, Jie Jang
  • Publication number: 20120207637
    Abstract: A peripheral pump-turbine including two wheels meshed with one another, laterally incorporating two or more blades fitting in matching recesses intercalated between said blades, being housed in a casing provided with fluid intake and discharge openings, where the wheels can incorporate teeth arranged between the blades and the recesses to allow the meshing thereof, and where the wheels can mesh by means of pinions integrally coupled to the shafts thereof in the outer portion of the casing.
    Type: Application
    Filed: July 1, 2010
    Publication date: August 16, 2012
    Inventor: Jose Pozo Fernandez
  • Publication number: 20120177525
    Abstract: An object is to meet the demands for increasing the number of teeth of a rotor in an internal gear pump while maintaining a theoretical discharge amount by using an equivalent body configuration so as to enhance the pump performance relating to discharge pulsation due to the increased number of teeth. In a pump rotor 1 formed by combining of an inner rotor (2) having N teeth and an outer rotor (3) having (N+1) teeth and disposing the rotors eccentrically relative to each other, the relational expression ?Dma <1.7e·sin(?/180)/sin {?/(180·N)} is satisfied, ?Dmax being a maximum value of a working pitch diameter of the inner rotor (2) and the outer rotor (3), and a working position (G) of the inner rotor (2) and the outer rotor (3) is always located rearward of an eccentric axis (CL) in a rotating direction of the rotor.
    Type: Application
    Filed: November 2, 2010
    Publication date: July 12, 2012
    Applicant: SUMITOMO ELECTRIC SINTERED ALLOY, LTD.
    Inventors: Masato Uozumi, Harumitsu Sasaki, Kentaro Yoshida
  • Publication number: 20120128521
    Abstract: An arrangement of an oil pump (8) and its drive in a transmission (1) that has a transmission housing (2) and at least one transmission shaft (3). The oil pump (8) is arranged coaxially with the at least one transmission shaft (3). The oil pump (8) is arranged on and can be driven by the at least one transmission shaft (3).
    Type: Application
    Filed: November 4, 2011
    Publication date: May 24, 2012
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Thomas SCHNEIDER, Uwe FIRZLAFF
  • Publication number: 20120087821
    Abstract: A pump assembly, in particular for lubrication in helicopters, has a casing, the lateral wall of which defines an intake port and a delivery port; and the casing houses two rotary pumps powered by a drive shaft via a motion-splitting transmission.
    Type: Application
    Filed: October 6, 2011
    Publication date: April 12, 2012
    Applicant: AGUSTAWESTLAND S.P.A.
    Inventor: Andrea Gabrielli