Three Or More Cylinders Arranged In Parallel, Radial, Or Conical Relationship With Rotary Transmission Axis Patents (Class 417/269)
  • Patent number: 10961991
    Abstract: A hydraulic swash block positioning system for positioning a swash block to set a variable displacement, the hydraulic device including a rotor with pistons and piston chambers, the positioning system having, between the housing and the swash block, a positioning cylinder with a positioning piston forming a positioning chamber for setting an average value of the swash block position and a control valve connecting the high oil pressure source with the positioning chamber through a feeding line. In accordance with the invention the feeding line is connected to an oil container that has a variable container volume that can be adjusted synchronously with the changes in the number of piston chambers connected to the high oil pressure source.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: March 30, 2021
    Inventor: Peter Augustinus Johannes Achten
  • Patent number: 10947963
    Abstract: An inlet baffle chamber (40) is provided in the port cover (26) of a piston pump. The inlet baffle chamber (26) fluidly connects a compressed piston chamber to an adjacent lower pressure piston chamber while the lower pressure piston chamber is in the suction cycle and separately receiving fluid from an inlet manifold (38) of the port cover (26). Instead of de-compressing high pressure fluid directly to pump's inlet (36) as in prior art pumps, the inlet baffle chamber (40) directs fluid to the next piston that is already in the suction cycle.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: March 16, 2021
    Assignee: Parker-Hannifin Corporation
    Inventor: Daniel Dyminski
  • Patent number: 10808693
    Abstract: A reciprocating pump includes a first manifold which includes a pump chamber, a second manifold which is connected to the first manifold, and a seal which is disposed inside the second manifold and comes into slidable contact with a plunger. A communication pipe which extends across an inside of the first manifold and an inside of the second manifold comes into contact with the seal. Additionally, the reciprocating pump includes a collar which is disposed inside the first manifold and comes into contact with the communication pipe through which the plunger is inserted. The collar, the communication pipe, and the seal are sandwiched between the inside of the first manifold and the inside of the second manifold.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 20, 2020
    Inventor: Nobuo Tojo
  • Patent number: 10808688
    Abstract: High pressure pumps and associated check valves for use with, e.g., waterjet systems, are disclosed herein. In some embodiments, high pressure pumps configured in accordance with the present disclosure include check valve assemblies that eliminate threaded parts for restricting the motion of check valve components which are subjected to very high pressure variations at relatively high frequencies. Additionally, embodiments of the pumps described herein can include unitary structures that integrate the individual parts associated with multiple cylinders (e.g., cylinders, check valve bodies, etc.) into a single part (e.g., a cylinder manifold, check valve manifold, outlet manifold, etc.) that can substantially reduce the number of different parts required to assemble the pump.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: October 20, 2020
    Assignee: OMAX Corporation
    Inventors: Chidambaram Raghavan, Darren Stang, Craig Rice
  • Patent number: 10738757
    Abstract: A variable displacement pump-motor includes a pump-motor having a plurality of cylinders and pistons, and further including a main shaft rotatable relative to the system body. A hydro mechanical control system includes a plurality of main stage valves in communication with the plurality of cylinders. Each of the main stage valves is configured to open and close a cylinder of the plurality of cylinders to one or more of high or low pressure fluid sources. A pilot spool valve is in selective communication with each of the main stage valves. The pilot spool rotates with the main shaft. The pilot spool includes coding configured to operate each of the main stage valves to open and close the respective cylinders to the one or more high and low pressure fluid sources according to a translational position of the pilot spool and rotation of the pilot spool by the main shaft.
    Type: Grant
    Filed: December 4, 2016
    Date of Patent: August 11, 2020
    Assignee: Regetns of the University of Minnesota
    Inventors: Michael Rannow, Perry Yan-Ho Li, Thomas Chase
  • Patent number: 10731643
    Abstract: A fluid cylinder for a reciprocating pump includes a body having inlet, outlet, and plunger bores. The inlet and outlet bores extend coaxially along a fluid passage axis. The plunger bore extends along a plunger bore axis that extends at an angle relative to the fluid passage axis. The body includes a crossbore at the intersection of the fluid passage axis and the plunger bore axis. The crossbore intersects the inlet, outlet, and plunger bores at respective inlet, outlet, and plunger bore ends. The inlet bore end and outlet bore ends are connected to the plunger bore end at respective first and second corners of the crossbore. The first corner includes a first linear bridge segment connected to the inlet and plunger bore ends by corresponding curved segments. The second corner includes a second linear bridge segment connected to the outlet and plunger bore ends by corresponding curved segments.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 4, 2020
    Assignee: S.P.M. Flow Control, Inc.
    Inventor: Johnny Eric DeLeon, II
  • Patent number: 10707792
    Abstract: A variable wobbler plate has a stub shaft and a pivot shaft. The pivot shaft has a smaller diameter portion and a larger diameter portion. The smaller diameter portion has a generally cylindrical outer periphery with a flat over a limited circumferential extent and a diameter to opposed portions of the generally cylindrical portion defining a first distance. A second distance is defined from an end of the smaller diameter portion spaced furthest from the stub shaft to an end of the larger diameter portion spaced closest to the stub shaft and measured along a central axis of the pivot shaft and defines a second distance. A ratio of the first distance to the second distance is between 0.60 and 0.75. An integrated drive generator and a method are also disclosed.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: July 7, 2020
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Derek R. Hochstetler, Ted A. Martin, Duane C. Johnson, Glenn C. Lemmers, Jr.
  • Patent number: 10677237
    Abstract: A drip tight pump includes a top cover with an inlet port and an outlet port, a sealing mat, a valve plate with an inlet hole and an outlet hole, a water inlet one-way valve, a cup, a cylinder, a swing frame, a steel needle, a steel ball, an eccentric wheel, a bottom cover and a motor which are successively set. The drip tight pump also includes a first leak-proof member and/or a second leak-proof member between the top cover and the sealing mat. The drip tight pump can seal the outlet hole and the inlet port, so that to prevent the drip tight pump from dripping.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: June 9, 2020
    Assignee: Foshan Yakeqi Electronic Appliance Co., Ltd.
    Inventor: Qihong Li
  • Patent number: 10641262
    Abstract: A diaphragm pump (1) includes a driving body (33) configured to convert a rotation of a crank body (31) into a reciprocal motion and transmit the reciprocal motion to a deformed portion (11) of a diaphragm (7). The driving body (33) includes a shaft portion (36) including a shaft hole (43) in which a driving shaft (32) fixed to the crank body is rotatably fitted. The shaft hole is a non-through hole including an opening-side end (43a) and a closed-side end (43b) each including an inner peripheral surface that contacts the driving shaft over a whole circumference. The shaft portion includes an oil storage (44) opening to a region between the opening-side end and the closed-side end of the shaft hole.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: May 5, 2020
    Assignee: OKENSEIKO CO., LTD.
    Inventor: Akira Inoue
  • Patent number: 10577779
    Abstract: A self-draining hydrant comprising a supply line coupled to an outlet and a housing adapted for placement in the ground and for coupling to a water supply. The housing can selectively provide water from the water supply to the supply line and has a reservoir for receiving drained water from the supply line. A piston is movable in a direction of travel from a first position to a second position within the housing for engaging the drained water and expelling it from the reservoir. The piston has a seal for engaging the housing to provide a seal with respect to the drained water. The housing has at least one slot extending in the direction of travel and engageable by the seal for permitting drained water to pass the seal.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: March 3, 2020
    Inventor: Herbert W. Hoeptner, III
  • Patent number: 10550832
    Abstract: A diaphragm pump includes a driving mechanism and a counting sensor. The driving mechanism includes an arm portion attached to a deformed portion that forms a pump chamber, and a crank that rotates integrally with the rotating shaft of a motor, in which the rotation of the crank is converted into a reciprocal motion to make the arm portion reciprocally move. The counting sensor is configured to use the arm portion as a detection target and alternately switch between a detection state and a non-detection state as the arm portion makes the reciprocal motion. It is therefore possible to provide a diaphragm pump capable of detecting a discharge flow rate using an inexpensive ready-made motor.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: February 4, 2020
    Assignee: OKENSEIKO Co., Ltd.
    Inventors: Kazuki Itahara, Fumitaka Takamizawa
  • Patent number: 10539104
    Abstract: An energize-to-close solenoid operated spool type inlet control valve for a high pressure fuel pump is variably positionable relative to a sleeve having three inlet feed ports and the inlet check valve member, to implement three stages of pump operation: limp-home, low-pressure flow from the low-pressure feed pump to the common rail, no flow to the common rail, and metered quantity of flow to the common rail. The spool valve includes an axially extending internal passage fluidly connected to a fluid volume at the front end of the spool valve, and a control port at the back end of the spool valve, selectively alignable to fluidly connect the ports. Two springs of different lengths either alone or together, bias the spool valve toward opening of the inlet check valve.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: January 21, 2020
    Assignee: Stanadyne LLC
    Inventor: Richard Paulo Pellini
  • Patent number: 10539186
    Abstract: A method involves the coating of a metallic substrate with a blasting medium through sandblasting or equivalent techniques. The blasting medium is preferably a powder made of silicon nitride (or other ceramic or engineering materials). The sandblasting process allows the silicon nitride powder to form a loosely packed layer on the substrate. With additional treatment via rolling and/or sliding action against a secondary body in the presence of a liquid lubricant, the loosely packed particle layer turns into a flattened surface matrix consisting of particle clusters and irregular cavities. The silicon nitride particles are spontaneously attached to the substrate surface without the use of an adhesive agent which subsequently leads to the formation of a surface matrix exhibiting a chaotic hybrid topography with zero tensile stress when subjected to rolling/sliding contact pressure. This cluster-cavity matrix can evolve continuously (thus dynamic) and is immune to debris indentation from dirty lubricants.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: January 21, 2020
    Inventor: Kenneth K. Chao
  • Patent number: 10458402
    Abstract: A micro water pump capable of controlling flow precisely includes an upper cover, a valve seat, a water capsule seat, a base casing, a water capsule, a crank lever, a drive shaft, an eccentric wheel, a motor, a photoelectric switch, and an output circuit board. The output circuit board is electrically connected with an external motor controller. Through the photoelectric switch to detect the revolution of the motor and to cooperate with the external motor controller, the revolution of the motor control can be controlled precisely so as to get a stable water flow under different volumes and back pressures.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 29, 2019
    Inventor: Hong Yan
  • Patent number: 10323384
    Abstract: A ride control system includes four independent metering valves (IMVs) that are independently and selectively controlled by a controller for attenuating oscillations in a hydraulic actuator of a machine. The controller is configured to open at least one of the IMVs for supplying pressurized fluid from a tank to a head end chamber of the hydraulic actuator when a pressure of the head end chamber drops to a value less than an initially registered pressure. Additionally, when the displacement of the piston block is positive and the pressure in the head end chamber falls to a value less than the pressure of fluid in a rod end chamber of the hydraulic actuator, the controller may also open another one of the IMVs by which fluid from the rod end chamber could be supplied to the head end chamber for supplementing pump flow and attenuating oscillations in the hydraulic actuator.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: June 18, 2019
    Assignee: Caterpillar Inc.
    Inventors: Vickram Murugesan, Hongliu Du, Lonnie James Devier, Frank Breier, Mandi Henderson, Matthew James Beschorner
  • Patent number: 10309700
    Abstract: A high pressure compressor may include a casing in which a refrigerant discharged from a compression device is filled into an inner space provided with a drive motor, a suction pipe directly connected to a suction port of the compression device, a discharge pipe in communication with the inner space of the casing, a first valve provided at the discharge pipe or the suction pipe to control a flow of the discharged refrigerant from a high pressure side to a low pressure side when the drive motor is stopped, a bypass pipe connected between a discharge side and a suction side based on the compression device, and a second valve provided at the bypass pipe to move the refrigerant at the high pressure side to the low pressure side through the bypass pipe, thereby allowing a differential pressure operation to continue when the compressor is stopped.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: June 4, 2019
    Inventors: Jingyu Lee, Jeonghyeon Park, Yeongcheol Ko
  • Patent number: 10309380
    Abstract: RAPPs comprise a housing, a swash plate with an inclined surface, and a rotor assembly positioned adjacent the swash plate. The swash plate and/or the inclined surface are ceramic. The rotor assembly comprises a rotor-drum having at least one cylinder bore having a piston disposed therein, wherein the piston has a ball-shaped end. A slipper is interposed between the swash plate and the rotor-drum, and includes a socket joint for accommodating the piston ball-shaped end therein. A plastic material may be disposed within the socket joint. The slipper has a ceramic interface surface in contact with the inclined surface. A stator plate is positioned in the housing, and a rotor plate is interposed between the stator plate and the rotor-drum. The stator plate has a ceramic interface surface in contact with the rotor plate. The rotor plate has a ceramic interface surface in contact with the stator plate.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: June 4, 2019
    Assignee: Ocean Pacific Technologies
    Inventor: John P. MacHarg
  • Patent number: 10280905
    Abstract: A pumping device may include a pump housing partially delimiting a working chamber, and a piston arranged therein, axially movable between first and second positions in which the working chamber has maximum and minimum volumes, respectively. The pumping device may include first and second fluid lines for introducing and discharging fluid to/from the working chamber, respectively. The first fluid line may be fluidically connected to the working chamber via a breakthrough formed in the pump housing at an end face of the working chamber opposite the piston, running transversely to the axial direction at least in the area of the breakthrough. The second fluid line may open obliquely into the working chamber in an area of the second position, relative to the axial direction in an end face delimiting the working chamber towards the first fluid line.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: May 7, 2019
    Assignee: Mahle International GmbH
    Inventors: Jochen Eggler, Alfred Elsaesser, Helge Ladisch, Christian Maisch, Sascha Senjic
  • Patent number: 10267299
    Abstract: A double-headed piston type swash plate compressor includes a rotation shaft, a housing, a swash plate, two cylinder bores, a double-headed piston, and two shoes. The double-headed piston includes two shoe holders, a neck, two heads, and two coupling portions. Each of the coupling portions includes an outer portion and an inner portion. A direction orthogonal to both of an opposing direction of the inner portion and the outer portion and the axial direction of the double-headed piston is referred to as a widthwise direction. The neck is larger in the widthwise direction than in the opposing direction so that the neck is deformable in the opposing direction. Each of the two coupling portions has a width that is less than or equal to a width of the neck. The inner portion includes a narrow portion. The narrow portion is at least partially located closer to the head than the shoe holder in the inner portion.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: April 23, 2019
    Inventors: Hiromichi Ogawa, Shinya Yamamoto, Hiroyuki Nakaima, Takahiro Suzuki
  • Patent number: 10260494
    Abstract: The present invention provides an eccentric roundel structure for three-compressing-chamber diaphragm pump. The eccentric roundel structure is a truncated-cylinder eccentric roundel in an eccentric roundel mount. The truncated-cylinder eccentric roundel characteristically comprises an annular positioning dent, a truncated cylinder peripheral and a sloped top ring created from the annular positioning dent to the truncated cylinder peripheral to replace a conventional rounded shoulder. By means of the sloped top ring, the oblique pull and squeezing phenomena of high frequency incurred by the rounded shoulder in a conventional tubular eccentric roundel are completely eliminated. Thus, not only the durability of the three-compressing-chamber diaphragm pump for sustaining the pumping action of high frequency from the truncated-cylinder eccentric roundels is mainly enhanced but also the service lifespan of the three-compressing-chamber diaphragm pump is exceedingly prolonged.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: April 16, 2019
    Inventors: Ying Lin Cai, Chao Fou Hsu
  • Patent number: 10233916
    Abstract: The present invention provides an eccentric roundel structure for four-booster-chamber diaphragm pump. The eccentric roundel structure is a truncated-cylinder eccentric roundel in an eccentric roundel mount. The truncated-cylinder eccentric roundel characteristically comprises an annular positioning dent, a truncated cylinder peripheral and a sloped top ring created from the annular positioning dent to the truncated cylinder peripheral to replace a conventional rounded shoulder. By means of the sloped top ring, the oblique pull and squeezing phenomena of high frequency incurred by the rounded shoulder in a conventional tubular eccentric roundel are completely eliminated. Thus, not only the durability of the four-booster-chamber diaphragm pump for sustaining the pumping action of high frequency from the truncated-cylinder eccentric roundels is mainly enhanced but also the service lifespan of the four-booster-chamber diaphragm pump is exceedingly prolonged.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: March 19, 2019
    Inventors: Ying Lin Cai, Chao Fou Hsu
  • Patent number: 10228031
    Abstract: The invention relates to an electrohydraulic brake release device (1) comprising an actuating cylinder arrangement (400), a tank module (300) for receiving a hydraulic medium, an electric drive unit (200) and a functional unit (100) having a pump assembly (113). The pump assembly (113) is arranged in a recess (111) provided in the functional unit (100), which recess is in communication with the tank module (300), is functionally connected to the actuating cylinder arrangement (400) by way of a conduit arrangement (150, 160, 170, 171, 172, 180, 190) and by way of a bearing carrier cover (115) is sealed off from a dry-running drive motor (210, 211) of the electric drive unit (200). The invention further relates to a brake system comprising a brake release device of this kind.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: March 12, 2019
    Inventor: Iris Gentzsch
  • Patent number: 10227975
    Abstract: A compressor includes a cylinder crankcase defining a cylinder which is closed by a valve plate provided with at least one discharge orifice associated with a discharge valve and defining, with the cylinder, a compression chamber; a cylinder cap seated against the valve plate and inside which is defined a discharge chamber. A portion of the cylinder cap is dimensioned to receive the entire flow of refrigerant gas released through the discharge orifice and accelerate said gas flow so as to produce an instantaneous reduction in the pressure gradient between the upstream and downstream sides of the discharge valve, in the moment the latter opens.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: March 12, 2019
    Assignee: Whirlpool S.A.
    Inventors: Dietmar Erich Bernhard Lilie, Talita Wajczyk
  • Patent number: 10182506
    Abstract: An inverter-integrated electric compressor according to the present invention is provided with an inverter case for forming an inverter-accommodating space for housing an inverter device, and an inverter cover configured to close an opening of the inverter-accommodating space. The inverter case is assembled with the inverter cover using a spigot joint, and when the inverter cover closes the opening of the inverter-accommodating space, an end-face-opposing face that opposes an end face of the inverter cover is formed. Such an inverter-integrated electric compressor may make it unlikely for the end face of the inverter cover to be exposed to corrosive environments, and may suppress corrosion of the end face of the inverter cover.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: January 15, 2019
    Inventors: Ichiro Yogo, Akinori Yoshioka
  • Patent number: 10145367
    Abstract: A piston pump configured to suction and discharge a working fluid includes a plurality of pistons, a cylinder block accommodating the pistons, a shaft combined with the cylinder block, swash plate configured to reciprocate the pistons in accordance with rotation of the cylinder block, a casing accommodating the cylinder block, and a valve plate placed between the cylinder block and the casing. The valve plate has a suction port providing communication between capacity chambers and a suction passage, and the suction port is a cutout part formed by cutting out an outer edge of the valve plate.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: December 4, 2018
    Assignee: KYB Corporation
    Inventors: Ryunosuke Ishikawa, Yoshihiro Oobayashi
  • Patent number: 10080468
    Abstract: An exemplary foam dispenser includes a housing, a container for holding foamable liquid and a foam pump in fluid communication with the container. The foam pump has a plurality of diaphragm pumping chambers wherein at least one diaphragm pumping chamber pumps liquid, and at least two diaphragm pumping chambers pump air. The foam pump includes a liquid outlet valve having a cracking pressure of at least about 5 pounds per square inch; and two or more air outlet valves having cracking pressure of less than about 5 pounds per square inch. A mixing chamber is located downstream of the plurality of diaphragm pumping chambers for mixing liquid and air to form a foamy mixture. A foam cartridge located downstream of the mixing chamber and an outlet is provided for dispensing foam.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: September 25, 2018
    Assignee: GOJO Industries, Inc.
    Inventors: Nick E. Ciavarella, Donald R. Harris, Dennis K. Jenkins, John J. McNulty
  • Patent number: 10082138
    Abstract: A valve assembly for a diaphragm pump reduces leakage while providing good flow-through by including shaping of the seat and/or the valve that increases the elastic tension between the valve and seat in outer regions of the valve assembly, thereby providing a more optimal tension over the entire valve. In embodiments, outer regions of the seat are more steeply sloped upward than inner regions while the valve is substantially uniform in slope. In other embodiments, valve outer regions are less steeply sloped upward, or more steeply sloped downward, than its inner regions, and the seat is substantially uniform in slope. A vertical cross section of the seat and/or valve can include continuous curvature and/or discrete changes in linear slope. In some embodiments, two linear slopes are included in the vertical cross section of the seat or valve. The pump can be a multi-chamber pump.
    Type: Grant
    Filed: August 25, 2014
    Date of Patent: September 25, 2018
    Assignee: Flowserve Management Company
    Inventors: Yang Han, Sidney Lowe
  • Patent number: 10065114
    Abstract: Disclosed is a haptic feedback device for converting virtual environment data into haptic feedback. Haptic feedback device can have a housing configured to receive a motor. The motor can be coupled to a camshaft and a main bladder disposed beneath the camshaft within the housing. The main bladder can be coupled to a valve controller via tubing and the valve controller can have a manifold and one or more valves. The one or more valves can be coupled to one or more haptic sensors via secondary tubing.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: September 4, 2018
    Inventors: Jan Goetgeluk, Thor Walker, Kevin Jacob Koch, Marissa Garcia, Kevin Gravesmill, Julia Kwok, Yi Ji
  • Patent number: 10066609
    Abstract: It is intended to provide a vehicle comprising a fluid working machine which can reduce wear of parts and be produced at low cost. The fluid working machine 11, 12 is provided with an eccentric cam 17, a piston 18A to 18F, a cylinder 19A to 19F, a drive rod 20A-20F having an engaging part 24 engaging with the piston and a contact part 25 contacting the eccentric cam 17, a holding member 34A to 34F surrounding the drive rod, a pressing member 40A to 40F for pressing up the holding member in a radially outward direction, and at least one holding ring 41 for holding the holding member from the outside.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: September 4, 2018
    Assignees: Artemis Intelligent Power Ltd., Danfoss Power Solutions Aps
    Inventors: Jack Lavender, Gordon Voller
  • Patent number: 10006449
    Abstract: A bearing arrangement for a wobble plate piston pump includes first, second, third, and fourth bearing assemblies. The first and second bearing assemblies support the drive shaft portion for rotation within the housing about the central longitudinal axis, while the third and fourth bearing assemblies support the load plate for rotation relative to the offset shaft portion of the shaft. The second bearing assembly is distally disposed from the first, the third disposed distally to second, and the fourth disposed distally to third. The fourth bearing assembly is the most distally disposed bearing assembly along the shaft.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: June 26, 2018
    Assignee: Caterpillar Inc.
    Inventors: Bryan E. Nelson, Daniel R. Baldwin, Alan R. Stockner, Robert M. Campion, Cory A. Brown, Joshua W. Steffen, Dana R. Coldren, Sana Mahmood
  • Patent number: 10006287
    Abstract: A compressor may include a compression mechanism and a shell assembly. The shell assembly may include a body and first and second end caps cooperating to contain the compression mechanism within the body. The body may include first and second open ends and inner and outer surfaces extending between the first and second ends. The outer surface may include first and second threaded portions disposed near the first and second ends, respectively. The first end cap may include a side wall having a third threaded portion engaging said first threaded portion of said body. The second end cap may include a side wall having a fourth threaded portion engaging the second threaded portion of the body.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: June 26, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Kirill M. Ignatiev, John Sheridan
  • Patent number: 9995372
    Abstract: A transmission for a hydraulic hybrid motor vehicle includes a planetary gear train (30) capable of differential operation. The planetary gear train has a first element (32) linked to an internal combustion engine (34), a second element (40) linked to drive wheels (22) of the vehicle, and a third element (36) linked to a hydraulic pump (64). The transmission (1) further includes a hydraulic machine which drives the drive wheels (22) by way of a link between the third element (36) of the planetary gear train (30) and the hydraulic pump (64). This link includes a speed reducer (38, 60) that provides, when the whole of the planetary gear train is rotating at the same speed, a reduction in the speed of rotation of the pump relative to that of the internal combustion engine (34) that is greater than a value of approximately two.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: June 12, 2018
    Assignee: TECHNOBOOST
    Inventors: Olivier Balenghien, Jean Christian Sirot
  • Patent number: 9964106
    Abstract: A diaphragm pump includes a housing having a pumping chamber containing fluid. The pump has a transfer chamber containing hydraulic fluid, and a hydraulic fluid reservoir in fluid communication with the transfer chamber. The pump housing forms a cylinder with a piston defining a piston inner chamber and sliding in the cylinder. A valve leads to the piston inner chamber with a valve spool slidably mounted in the piston inner chamber to cover the valve and uncover the valve. A diaphragm connects to the valve spool by a plunger. An overfill limiter includes a spacer slidably mounted in the piston inner chamber. A first spring is intermediate the valve spool and the spacer and a second spring is intermediate the end of the piston inner chamber and the spacer, the second spring having a second spring constant greater than the spring constant of the first spring.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: May 8, 2018
    Assignee: Wanner Engineering, Inc.
    Inventor: Richard D Hembree
  • Patent number: 9943196
    Abstract: A sequentially activated multi-diaphragm foam pump for a foam dispenser includes a housing with a liquid pump portion and air pump portion secured. The liquid pump portion has a liquid inlet and valve, a liquid pump diaphragm, a liquid outlet and outlet valve. The air pump portion has a first and second air inlet and air inlet valve, a first and second air pump diaphragm, and a first and second air outlet. The foam pump also includes a mixing chamber that is in fluid communication with the liquid outlet, the first second air outlets. The liquid pump diaphragm, the first and second air pump diaphragms, operate in sequential order and the foamy mixture is dispensed through an outlet that is in fluid communication with the mixing chamber.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: April 17, 2018
    Assignee: GOJO Industries, Inc.
    Inventors: Wing-Hoi Ringo Mak, Zhen-He Huang, Xiao Huang, Chung-Ming Yiu, Nick E. Ciavarella
  • Patent number: 9932828
    Abstract: An axial piston machine (1) is shown, comprising: a shaft (2) having an axis (3) of rotation, a cylinder drum (4) connected to said shaft (2) and having at least a cylinder (5) parallel to said axis (3) of rotation, a piston (6) movable in said cylinder (5), a swash plate (13), a slide shoe (11) pivotally mounted to said piston (6), and holding means holding said slide shoe (11) against said swash plate (13), said holding means having a pressure plate (14) and a number of coil springs (15) arranged between said cylinder drum (4) and said pressure plate (14). The object is to have a reliable operation of said machine with a simple construction. To this end each coil spring (15) is at least at one end fixed by a protrusion (20) extending into said coil spring (15).
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: April 3, 2018
    Assignee: Danfoss A/S
    Inventors: Frank Holm Iversen, Stig Kildegaard Andersen
  • Patent number: 9932971
    Abstract: A piston pump for a high-pressure cleaning appliance is provided, which includes a plurality of pistons that are movable back and forth and each of which enters a pump chamber and is displaceably held at a piston guiding part. The piston guiding part has a supporting wall on which a plurality of guiding elements, each of which guides a piston, are disposed. In order to be able to produce the piston pump in a more cost-effective manner, it is proposed according to the invention that the supporting wall is curved.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: April 3, 2018
    Assignee: Alfred Kärcher GmbH & Co. KG
    Inventor: Thomas Hofer
  • Patent number: 9879533
    Abstract: A spring return apparatus for elastically prestressing sliding pads against a sliding bearing face of an axial piston machine. The sliding pads are positioned on working pistons mounted axially movably in cylinders of a cylinder barrel that drives a drive shaft including a spring plate and a supporting plate. The spring plate includes a ring region surrounding a central opening, and levers extending radially from the ring region. The levers are arranged spaced apart or distributed uniformly in the circumferential direction, and are elastically flexible and/or elastically pivotable in the axial direction. Every two adjacent levers delimit a receiving region for receiving a tapered section of a working piston or a sliding pad. The supporting plate has a circular ring-shaped supporting region configured to support radially outer end sections of the levers if the supporting plate is arranged concentrically with respect to and axially adjacently to the spring plate.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: January 30, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Christian Spielvogel, Manuel Sell, Martin Zug, Timo Nafz
  • Patent number: 9869307
    Abstract: An oil separation member has a partition member that partitions between a discharge chamber and a discharge passage. A circular ring portion is provided in the partition member in a manner extending toward the discharge passage. An introduction hole that communicates the discharge chamber and the discharge passage with each other is formed in the circular ring portion. The introduction hole extends in a tangential direction to the circular ring portion.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: January 16, 2018
    Inventors: Naoki Koeda, Ai Saeki, Kazuhiro Kuroki, Ryo Matsubara, Tetsuhiko Fukanuma
  • Patent number: 9845799
    Abstract: A pump includes a molded housing configured with a rear endbell portion to receive an armature and bearing, an intermediate motor portion to receive a motor shell and magnets arranged around the armature, and a front endbell portion to receive a diaphragm assembly having a diaphragm support plate supporting a diaphragm, the rear endbell portion, the intermediate motor portion and the front endbell portion being configured as an integrated molded housing unit, the diaphragm having two circumferential diaphragm sealing surfaces. The pump also includes an upper housing configured to assemble and couple to the molded housing so as to form a circumferential fluid-tight sealing arrangement that is configured between the front endbell portion and the upper housing on only one end of the pump.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: December 19, 2017
    Assignee: Flow Control LLC
    Inventors: Humberto V. Meza, Manuel Villagomez
  • Patent number: 9816493
    Abstract: A fuel pump comprises a cam assembly having a lobe, and a body assembly including a cavity for receiving the cam assembly. The body assembly includes both a body portion and a cover portion that cooperatively form the cavity. The body portion includes a lobe cavity, an engagement surface and an opening at the cavity, with the cover portion including a respective engagement surface and opening. The engagement surfaces are mated together with the cam assembly disposed in the cavity and extending through the openings, and is configured to rotate in the cavity with the lobe disposed in the lobe cavity. A groove is formed in one of the engagement surfaces of the body portion or cover portion for receiving a seal cap at least partially therein adjacent the lobe cavity.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: November 14, 2017
    Assignee: Exergy Engineering LLC
    Inventors: Mike Van Allsburg, Philip J. DeVries, Gregg R. Spoolstra, Randall C. Harkema
  • Patent number: 9797638
    Abstract: A compressor capable of reducing oil circulation rate with a simple structure is provided. A compressor 100 in which a piston 136 is caused to reciprocate, so that a refrigerant gas drawn from a suction chamber 141 via a suction hole 103a is compressed and discharged, includes: a partition member 150 dividing the suction chamber 141, into which the refrigerant gas flows from a suction passage 104a, into a first space 141a connected to the suction passage 104a and a second space 141b connected to the suction hole 103a; and a communication passage 150a configured to allow the first space 141a and the second space 141b to be in communication with each other, and introduce the refrigerant gas, from which lubricating oil has been separated, from the first space 141a to the second space 141b.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: October 24, 2017
    Inventor: Yukihiko Taguchi
  • Patent number: 9784268
    Abstract: A hydraulic pump distributor sealing ring for a hydraulic distributor of a hydraulic pump, includes a continuous sealing ring housed in a ring groove formed in a pump stator whose inlet-delivery ports are each aligned with a distribution opening passing right through the ring in the direction of its thickness, this ring including a circumferential-contact boss which has a circumferential line of contact that can come into contact with a rotor-side low-pressure sealing surface, the ring also including a compression-decompression track, a ring sealing lip that provides sealing between the ring and the ring groove, and rotation-proofing elements.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: October 10, 2017
    Inventor: Vianney Rabhi
  • Patent number: 9765765
    Abstract: Variable displacement compressor, with center bore 101b in a center part of cylinder block 101, includes: first bore 101b1 supporting plain bearing 131 of drive shaft 110; second bore 101b2 with a peripheral wall radially outside of first bore 101b1; and third bore 101b3 connected to a crank chamber and radially outside of a first bore 101b1. A pressure supply path 145 for flowing a part of a discharge refrigerant from a discharge chamber to the crank chamber includes: second bore 101b2; a first path 145a communicating second bore 101b2 with the discharge chamber; a second path 145b that communicates with second bore 101b2, and axially extends from one end surface of drive shaft 110 toward the inside of drive shaft 110; and a third path 145c substantially orthogonal to second path 145b and opens to an outer peripheral surface of drive shaft 110, and communicates with the crank chamber.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: September 19, 2017
    Inventors: Tsutomu Ishikawa, Anri Enomoto, Yukihiko Taguchi
  • Patent number: 9528504
    Abstract: The outer periphery of the outer part of a substrate is a chamfer, and the outer part of the substrate is covered by a resin film layer. The thickness of the resin film layer at the chamfer is thicker than the locations radially further inwards from said chamfer. The surface of the resin film layer on the outer peripheral edge of the outer part is coplanar with the surface of the resin film layer further inwards. These locations act as the sliding surface (the surface of the swash plate) that slides on a shoe, and compared with conventional techniques, because the resin film layer in the outer peripheral edge is thick, attrition of the portion being pressed against the shoe is suppressed. For that reason, the outer peripheral edge of the substrate and the vicinity thereof are prevented from being exposed, and seizure of the swash plate can be prevented.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: December 27, 2016
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Masato Shibata, Kyohei Yamane, Shingo Goto
  • Patent number: 9470224
    Abstract: A piston-type compressor includes a housing, a drive shaft supported on the housing, a communication hole formed inside the drive shaft, a valve mechanism, and a cylindrical body. The cylindrical body is inserted in the communication hole to disconnect a residual gas bypass passage and the communication hole from each other and to open the interior space of the cylindrical body to the communication hole. The valve mechanism includes an annular space defined outside the cylindrical body in the communication hole and multiple connection holes providing communication between the annular space and communication passages. The residual gas bypass passage is formed of the annular space and the multiple connection holes.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: October 18, 2016
    Inventors: Takahisa Ban, Koji Kawamura, Yoshio Kimoto, Kengo Sakakibara
  • Patent number: 9375155
    Abstract: A diaphragm pump for achieving reduced pressure ripple of an exhausted gas is provided. The diaphragm pump is a pump for transporting a gas in accordance with change in volume of a pump chamber, and the diaphragm pump includes an exhaust valve permitting flow of the gas that flows out of the pump chamber and prohibiting a flow thereof in a reverse direction, an air chamber in which the gas that has flowed out of the pump chamber through the exhaust valve flows, an exhaust port through which the gas is exhausted to the outside of the diaphragm pump, and a through hole portion for restricting a flow rate of the gas that flows from the air chamber to the exhaust port.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: June 28, 2016
    Assignee: OMRON HEALTHCARE Co., Ltd.
    Inventors: Yoshihiko Sano, Tomohiro Kukita
  • Patent number: 9291133
    Abstract: A shaft arrangement for an axial piston pump assembly to couple to a rotatable member such as a gear therewith. A shaft extends at least partially through a housing chamber of the pump about a longitudinal axis. Reciprocating pistons are disposed within the chamber radially about the shaft. A cam unit is fitted over the shaft and provides an angled camming surface to engage the pistons. Bearing assemblies are fitted over the cam unit. An adapter can be fitted over the proximal end of the cam unit. The adapter has a distal surface which may abut the bearing assembly and be axially spaced from the cam unit, and an outer radial surface to engage the rotatable member. A clamping device provides a desired clamp load path between the rotatable member, the adapter, the cam unit, the bearing assemblies and the shaft.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: March 22, 2016
    Assignee: Caterpillar Inc.
    Inventors: Michael E. Pickell, Bryan E. Nelson, Satyasai C. Avasarala, David E. Hackett
  • Patent number: 9217425
    Abstract: A diaphragm pump includes a motor, an eccentric member driven by the motor, and a diaphragm. The motor includes an output shaft connected with the eccentric member. The eccentric member includes multiple arms which move up and down due to the rotation of the output shaft. The diaphragm has multiple bladders. Each bladder forms a pump chamber. The bladders are connected with the arms such that the bladders are compressed or expanded due to the movement of the arms. The pump has an air exhaust chamber and an air inlet chamber. The air inlet chamber is connected to the pump chambers via a passage. The passage includes a cavity which overlaps the air exhaust chamber in an axial direction of the motor.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: December 22, 2015
    Inventors: Wan Hor Looi, Hong Yi Zeng, Samuel Agustin Cuaresma, Jr.
  • Patent number: 9169835
    Abstract: Provided is a piston type compressor which can enhance cooling of internal parts housed in a crank chamber, while effectively reducing an outflow of oil to the outside of a compressor by effectively performing a centrifugal separating operation due to the rotation of a shaft. The compressor includes: a first suction path which directly introduces a working fluid flowed from a suction port 30 into suction chambers 27a, 27b without via the crank chamber 7; and a second suction path which introduces the working fluid flowed from the suction port 30 into the suction chambers 27a, 27b via the crank chamber 7, and the second suction path includes: an oil separation passage 32 where a working fluid is introduced into the suction chambers 27a, 27b from the crank chamber 7 via holes formed in the shaft; and a bypass passage 33 where the working fluid is introduced into the suction chambers 27a, 27b from the crank chamber 7 through the cylinder blocks 1, 2 without via the shaft 12.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: October 27, 2015
    Assignee: VALEO JAPAN CO., LTD.
    Inventors: Tomoyasu Takahashi, Takanori Teraya
  • Patent number: 9127970
    Abstract: A hydraulic device including an autonomous electronic sensor assembly that has at least one miniature sensing element. Sensing elements of this type require a minimal amount of space. It is especially preferred if the sensor assembly has at least one miniature transmitter. As the hydraulic device does not then require any sensitive electric cables for signal transmission, the reliability of its monitoring capabilities is optimized.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: September 8, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Grit Geissler, Dirk van Aalst