Three Or More Cylinders Arranged In Parallel, Radial, Or Conical Relationship With Rotary Transmission Axis Patents (Class 417/269)
  • Patent number: 11867163
    Abstract: An electric drive compressor system (1) comprising: a reciprocating compressor (2) having temperature and pressure sensors (83, 84) for sensing a pressure and temperature of gas prior to compression by the compressor (1) and for sensing a pressure and temperature of gas after compression by the compressor (1); a motor (3) connected to the compressor (1) for driving the compressor (1); a cooling system (4) for cooling the motor (3); and a controller (5) for controlling the motor (3) in real time based on the temperature and pressure sensor readings of the gas prior to and after compression by the compressor (1).
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: January 9, 2024
    Assignee: UNICLA INTERNATIONAL LIMITED
    Inventors: Mark Mitchell, Peter Woodfield, Chris Conway Lamb, Hongqiu Yan
  • Patent number: 11835036
    Abstract: A piston for a pump and a pump are provided. A piston bladder (2) of the piston is cylindrical in shape, a chamber (20) is a cylindrical chamber, the chamber (20) has as inner diameter of 9.2±0.5 mm, the chamber (20) has a depth of 3.8±0.5 mm, the piston bladder (2) has a wall with a thickness of 0.5±0.3 mm, and the piston bladder (2) has an outer circumferential surface, a part of the outer circumferential surface connected to a base plate (1) protrudes outwards radially to form a protective sleeve (21).
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: December 5, 2023
    Assignee: XIAMEN KOGE MICRO TECH CO., LTD.
    Inventors: Kunlin Chang, Chunlian Wang
  • Patent number: 11731688
    Abstract: A method of differentially steering a hydraulically driven vehicle includes measuring left and right swash plate angles of pumps which drive left and right wheels of the vehicle and if the angles are different from one another and the larger swash plate angle is equal to or exceeds a threshold value then reducing the larger swash plate angle. If the larger swash plate angle is between the threshold value and a lower limit, or below the lower limit the swash plate angle is increased. Control systems and vehicles include swash plate angle sensors and actuators in communication with a controller which effects the steering control method.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: August 22, 2023
    Assignee: CNH Industrial America LLC
    Inventors: Philip J. Ehrhart, Madhu Pankaj, Robert L. Fackler
  • Patent number: 11703044
    Abstract: A multi-chamber wobble plate pump that includes a housing with an inlet port, an outlet port and a plurality of pump chambers. The pump further includes a plurality of inlet valves each located within one of the pump chambers to control fluid flow from the inlet port to the pump chambers. The pump also includes a plurality of outlet valves that control fluid flow from the pump chambers to the outlet port. A wobble plate is coupled to a diaphragm and a plurality of pistons. The diaphragm has at least one flex area with a leading edge and a trailing edge. The diaphragm has a plurality of diaphragm piston openings each with a diaphragm piston opening centerline. The wobble plate has a plurality of wobble plate piston openings, each wobble plate piston opening having a wobble plate piston open centerline that is offset from one of diaphragm piston opening centerlines.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: July 18, 2023
    Assignee: Aquatec Internationa, Inc.
    Inventors: Ivar L. Schoenmeyr, Sedat Delareyna
  • Patent number: 11649802
    Abstract: A sliding member including, a support layer and a sliding layer provided on a side of one end surface of the support layer configured to slide on a mating member, the sliding layer having a hardness set higher toward an outer side than at a center in an axial direction.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: May 16, 2023
    Assignee: DAIDO METAL COMPANY LTD.
    Inventor: Junpei Hosokawa
  • Patent number: 11629709
    Abstract: A piston type compressor has a main housing including a cylinder housing. The cylinder housing has a central bore for receiving a shaft therein through a first surface thereof and a plurality of bores configured for receiving a plurality of pistons therein through the first surface thereof. An inlet is configured for conveying a primary fluid to the plurality of bores. An outlet is configured for conveying the primary fluid from the plurality of bores. A plurality of passages is separate from the inlet and the outlet. Each of the plurality of passages is formed in the main housing and is configured for conveying a supplemental fluid to one of the plurality of bores.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: April 18, 2023
    Assignee: HANON SYSTEMS
    Inventors: Michael G. Theodore, Jr., Kanwal Bhatia, Carl Cordy
  • Patent number: 11619219
    Abstract: A multi-chamber wobble plate pump having a housing with an inlet port, an outlet port and a plurality of pump chambers. A wobble plate is coupled to a diaphragm and a plurality of pistons. Rotation of the wobble plate moves the pistons within the pump chambers to draw in and force fluid out of the chambers. The pump includes a plurality of inlet valves each located within one of the pump chambers to control fluid flow from the inlet port to the pump chambers. Each inlet valve has an asymmetric cross-section, a thin section and a stem along a longitudinal axis. The thin section of the valve has less mechanical strength than the remaining portion of the valve. The valve is configured to open first at the thin section from reduced pressure during outward movement of the piston allowing air to be removed from the chambers.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: April 4, 2023
    Assignee: Aquatec International, Inc.
    Inventors: Ivar L. Schoenmeyr, Sedat Delareyna
  • Patent number: 11466689
    Abstract: A fuel pump includes a control box, a pump body, and a gun nozzle. A motor housing is fixedly connected to an inner wall of the pump body, a motor is disposed in the motor housing. A first sealing mechanism is disposed between a first side of the motor housing and an output shaft of the motor. A second sealing mechanism is disposed between a second side of the motor housing and a power line of the motor. An impeller is fixedly connected to one end of the output shaft of the motor. One end of the pump body is fixedly connected to a pressure chamber, and a liquid inlet is defined on one side of the pressure chamber and a liquid outlet is defined on one side of the pump body, where the one side of the pressure chamber faces away from the one side of the pump body.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: October 11, 2022
    Assignee: ZHONGSHAN PEILI TECHNOLOGY CO., LTD.
    Inventor: Chunlai Lai
  • Patent number: 11408421
    Abstract: The present invention discloses a scroll compressor. At least two shrink belts (23?, 23?, 26, 26?, 28, 28?) are provided around the outer periphery of said fixed scroll between the outer periphery of said fixed scroll (2) and the inner wall surface of the upper cap (1) of the scroll compressor. The at least two shrink belts are annular, and are in interference fit between the outer periphery of said fixed scroll and the inner wall surface of the upper cap. The at least two shrink belts include a main shrink belt (23?, 23?, 28) and an assistant shrink belt (26, 26?, 28?). The main shrink belt and the assistant shrink belt are arranged side by side in the axial direction, that is, in the vertical direction of the fixed scroll, and the main shrink belt and the assistant shrink belt are spaced apart from each other by a distance. In this way, it is allowed to add other special structure (e.g.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: August 9, 2022
    Assignee: Danfoss (Tianjin) Ltd.
    Inventors: Lin Ma, Wenhu Yao, Kun Qian, Bin Wang
  • Patent number: 11408415
    Abstract: A universal pump assembly mounts, interchangeably, on a canned motor or on an adapter having an outer magnet assembly rotated by a motor. The pump assembly has a casing with an inlet and an outlet, and an impeller rotatable within the casing to pump fluid from the inlet to the outlet. The pump assembly can have either a mounting ring for attachment to the canned motor, or a containment shell having a cup with an inner magnet assembly and a mounting ring extending from the cup for attachment to the adapter. Mounting features of the mounting ring may be threaded holes or internally threaded posts as non-limiting examples.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: August 9, 2022
    Assignee: ROTARY MANUFACTURING, LLC
    Inventors: Jeffrey Scott Brown, Scott Alan McAloon, Seth Thomas
  • Patent number: 11346340
    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: July 30, 2020
    Date of Patent: May 31, 2022
    Assignee: SPM OIL & GAS INC.
    Inventor: Johnny Eric DeLeon, II
  • Patent number: 11346339
    Abstract: A high pressure pump comprising a fluid end mechanically coupled to a power end. The power end is modular and comprises a crankshaft section, a crosshead section, and a connector section coupled together by a first set of stay rods. The fluid end comprises a plurality of fluid end sections positioned in a side-by-side relationship. Each of the plurality of fluid end sections are attached to the power end using a plurality of second set of stay rods.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: May 31, 2022
    Assignee: Kerr Machine Co.
    Inventors: Mark S. Nowell, Kelcy Jake Foster, Micheal Cole Thomas, Christopher Todd Barnett, Nicholas Son, John Keith, Guy J. Lapointe, Michael Eugene May
  • Patent number: 11333145
    Abstract: A hydraulic device having a plurality of cylinders for distributing a flow of hydraulic fluid between a reservoir and a load, the device comprising: a housing having the plurality of cylinders with a plurality of corresponding pistons configured for reciprocation of a constant stroke length; an input port of the housing fluidly connected to each cylinder of the plurality of cylinders, the input port facilitating introduction of the hydraulic fluid into said each cylinder; an output port of the housing connected to said each cylinder, the output port facilitating the ejection of the hydraulic fluid from said each cylinder during the reciprocation, the output port configured for fluidly coupling said each cylinder to the load; and a distributor coupled to a main shaft of the hydraulic device, such that the distributor rotates in conjunction with the main shaft, the distributor having a distributor body including a first port configured for fluid communication with the input port and a second port configured for
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: May 17, 2022
    Inventor: Antonio Cannata
  • Patent number: 11286775
    Abstract: A rotatable piston assembly for a reciprocating piston type hydraulic machine includes a rotatable piston configured for a controlled rotation and configured to reciprocate within a cylinder bore of the reciprocating piston type hydraulic machine.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: March 29, 2022
    Assignee: Poisedon Fluid Power, LLC
    Inventor: Douglas A. Hemink
  • Patent number: 11274666
    Abstract: Embodiments of the disclosure provide a micro-fluid pump having a pump cover with a distribution wall, a one-way valve having a spark surface, and a micro-fluid pump including such a one-way valve as well as a micro fluid pump including a diaphragm deformation control structure. The pump having the pump cover with the distribution wall includes a pump body. The pump cover overlies the pump body to form at least a portion of the inlet passage and at least a portion of the discharge passage, and includes an inlet cavity for containing fluid entering the micro-fluid pump from the outside and a discharge cavity for containing fluid to be discharged from the micro-fluid pump, which cavities are separated by an isolation portion. The pump cover has on its bottom surface a distribution wall which is disposed in the inlet cavity and extends at least partially toward the partition portion.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: March 15, 2022
    Assignee: XIAMEN CONJOIN ELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Hong Yan
  • Patent number: 11187214
    Abstract: In an embodiment, a pump includes a pump housing formed as a singular body. The pump housing may include a mounting feature adjacent a first end of the pump housing. The mounting feature may be configured for mounting the pump relative to a prime mover. A drive system cavity may be formed in the first end of the pump housing, and sized to receive at least a portion of an axial drive system. A pump cylinder may extend inwardly into the pump housing from the drive system cavity. A piston guide plate may be configured to be affixed within the drive system cavity. The piston guide plate includes a piston guide associated with the pump cylinder. The piston guide may be configured to at least partially receive a pump piston therethrough for facilitating alignment and axial movement of a pump piston within the pump cylinder.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: November 30, 2021
    Assignee: FNA Group, Inc.
    Inventors: Richard J. Gilpatrick, Gus Alexander, Paulo Rogerio Funk Kolicheski
  • Patent number: 11092146
    Abstract: A pump includes a pump body. The pump may also include a pump mounting flange configured to mount the pump to an engine flange including four clocked mounting holes. The pump mounting flange may include a first set of four mounting holes corresponding to the four clocked mounting holes in a first orientation. The pump mounting flange may include a second set of four mounting holes corresponding to the four clocked mounting holes in a second orientation.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: August 17, 2021
    Assignee: FNA Group, Inc.
    Inventors: Gus Alexander, Richard J. Gilpatrick
  • Patent number: 11073142
    Abstract: A vehicle air-conditioner compressor may include a housing having a front housing section and a rear housing section; a shaft rotatably installed in the housing; a lug fixed at a preset position on the shaft; a swash plate coupled with the lug at one side thereof and rotating together with the lug, a piston connected to the swash plate by a shoe and moved reciprocatingly by the swash plate; a cylinder that accommodates the piston therein, and a pressure-sensing chamber coupled with a rod at the other side of the swash plate, that operates the rod using a pressure provided from a high-pressure chamber of the rear housing.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: July 27, 2021
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Dong-Seok Oh
  • Patent number: 11067066
    Abstract: The hydraulic machine includes a cam and a cylinder block with pistons co-operating with cam lobes, each of which has two ramps extending between top and bottom dead center arcs. The cylinders are connected in alternation to a feed and to a discharge, in sequences separated by switchover stages including an isolation stage during which they are isolated relative to the feed and discharge main ducts. The angular position of the start or of the end of at least one first isolation stage relative to the corresponding dead center arc is different from the angular position of the start or of the end of at least one second isolation stage relative to its corresponding dead center arc, both of these dead center arcs being top dead center arcs or both of them being bottom dead center arcs.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: July 20, 2021
    Assignee: POCLAIN HYDRAULICS INDUSTRIE
    Inventors: Anté Bozic, Nicolas Ternoy, Christophe Gouzou, Sébastien Gonzalez, Bamdad-Soufi Djahanchah
  • Patent number: 11047373
    Abstract: A piston compressor includes a housing including a cylinder block having cylinder bores. The housing has a discharge chamber, a swash plate chamber, and an axial hole. The piston compressor includes a drive shaft, a fixed swash plate, a piston, a discharge valve, a rotating body, and a control valve. The rotating body has a second communication passage that communicates with first communication passages intermittently by rotation of the drive shaft. A flow rate of refrigerant gas discharged from the compression chambers into the discharge chamber decreases when a communication angle around the axis becomes large per a rotation of the drive shaft depending on a position of the rotating body in the direction of the axis. The piston compressor includes a suction throttle that decreases the flow rate of refrigerant gas in the compression chamber when the communication angle becomes large based on the control pressure.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: June 29, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Akinobu Kanai, Shinya Yamamoto, Yoshinori Inoue
  • Patent number: 11015586
    Abstract: There is provided a shoe capable of suppressing deformation of a member on which the shoe slides. The shoe includes: a first sliding surface which slides on a concave surface of a piston (first movable member); and a second sliding surface which bulges toward a side opposite to the first sliding surface and slides on a flat surface of a swash plate (second movable member). The second sliding surface includes: a curved outer peripheral portion which is provided along an outer periphery of the second sliding surface; and a central portion which is provided at a center of the second sliding surface so as to be continuous with the curved outer peripheral portion and has a radius of curvature greater than a radius of curvature of the curved outer peripheral portion.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: May 25, 2021
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Masato Shibata, Shingo Goto, Yasuyuki Tago
  • Patent number: 10995745
    Abstract: A submersible pump assembly for transference of a fluid medium with low viscosity is disclosed. In one embodiment, the submersible pump assembly includes a cylinder block having cylinders and pistons. A drive shaft is rotatably supported in the cylinder block and coupled to a drive unit. An inclined leading plate is coupled to the pistons and the drive shaft such that the pistons are configured to be axially driven in a reciprocating motion within the cylinders upon rotation of the inclined leading plate. A suction chamber and a pressure chamber are each located in fluid communication with the cylinders. In one operational mode, the fluid medium is transferred from the suction chamber to the pressure chamber during the reciprocating motion of the pistons, when the pistons are active. In another operational mode, the fluid medium is circulated through the suction chamber.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: May 4, 2021
    Assignee: Texas Institute of Science, Inc.
    Inventors: Simon Oman, Marko Nagode, Jernej Klemenc, Franc Majdic, Marko Hocevar, Ales Gosar, Andrej Skrlec, Laslo Olah
  • 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: 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: 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: 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
    Assignee: XIAMEN CONJOIN ELECTRONICS TECHNOLOGY CO., LTD.
    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
    Assignee: LG ELECTRONICS INC.
    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
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    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
    Assignee: PINTSCH BUBENZER GMBH
    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
    Assignee: MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
    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: 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: 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: 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