Radial Cylinders Patents (Class 417/273)
  • Patent number: 11002268
    Abstract: A cam driven compressor includes a cam coupled to a plurality of cylinder and piston assemblies. Each cylinder and piston assembly comprises a piston located and movable within a respective cylinder. Each cylinder has a cylinder head. The compressor comprises a housing defining a cavity configured to receive a portion of a source gas from one or more of the cylinders in order to maintain a positive gas pressure within the cavity.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: May 11, 2021
    Assignee: Cobham Mission Systems Davenport LSS Inc.
    Inventors: Gerin Goldensoph, Jeff Brown
  • Patent number: 10920758
    Abstract: A compressor includes a stationary housing disposed about a central axis and having a radially inner surface defining a plurality of circumferentially spaced cavities opening into an interior space of the housing. The compressor further includes a plurality of fluid volume control members, each of which is disposed within one of the plurality of cavities and defines a fluid chamber within the cavity sealed relative to the interior space. An eccentric shaft is disposed within the interior space of the housing and configured for rotation about the central axis. A hypocycloid rotor is disposed within the interior space of the housing and supported on the eccentric shaft. The rotor defines a plurality of lobes configured for movement into and out of each cavity responsive to rotation of the shaft to displace the fluid volume control member in each cavity and adjust a volume of each fluid chamber.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: February 16, 2021
    Assignee: Bendix Commercial Vehicle Systems LLC
    Inventor: David D. Colavincenzo
  • Patent number: 10890151
    Abstract: Provided is a high-pressure fuel pump which can fix a cylinder to a pump body using a simple structure, and can reduce a displacement amount inward in a radial direction of the cylinder. A high-pressure fuel pump includes a pump body which is formed with a pressing chamber and a cylinder which is inserted in a hole formed in the pump body. The cylinder is swaged to the hole by pressing a convex portion on an outside in a radial direction to fit into the hole on an opposite side to the pressing chamber, by screwing a formed screw thread into the hole, or by being swaged with the opposite side to the pressing chamber. The cylinder is formed with a clearance in the radial direction with respect to the hole of the pump body all over a region from a bonding portion to an upper end.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 12, 2021
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kazuaki Tokumaru, Masahiko Hayatani, Satoshi Usui, Atsuji Saito, Kenichiro Tokuo, Masamichi Yagai, Masayuki Suganami
  • Patent number: 10870418
    Abstract: An electronic brake system includes a master cylinder connected to a reservoir, including a master chamber and a master piston provided at the master chamber, and discharging the oil according to pedal effort of a brake pedal, a sensor measuring a displacement of the brake pedal, a pedal simulator providing a reaction force according to pedal effort of the brake pedal and including a simulator chamber connected to the master cylinder, a hydraulic actuator provided between the master cylinder and a wheel cylinder and controlling a hydraulic pressure flow delivered to the wheel cylinder, a first hydraulic pressure supply device operated by an electrical signal output by corresponding to the displacement of the brake pedal, and supplying a hydraulic pressure to the hydraulic actuator, and a second hydraulic pressure supply device provided between the reservoir and the master cylinder and providing a vibration pedal feel to the brake pedal.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: December 22, 2020
    Assignee: MANDO CORPORATION
    Inventors: Joo-Hee Son, Seong-Ho Choi
  • Patent number: 10851751
    Abstract: Provided is a high-pressure fuel pump which can fix a cylinder to a pump body using a simple structure, and can reduce a displacement amount inward in a radial direction of the cylinder. A high-pressure fuel pump includes a pump body which is formed with a pressing chamber and a cylinder which is inserted in a hole formed in the pump body. The cylinder is swaged to the hole by pressing a convex portion on an outside in a radial direction to fit into the hole on an opposite side to the pressing chamber, by screwing a formed screw thread into the hole, or by being swaged with the opposite side to the pressing chamber. The cylinder is formed with a clearance in the radial direction with respect to the hole of the pump body all over a region from a bonding portion to an upper end.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: December 1, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Kazuaki Tokumaru, Masahiko Hayatani, Satoshi Usui, Atsuji Saito, Kenichiro Tokuo, Masamichi Yagai, Masayuki Suganami
  • Patent number: 10823160
    Abstract: A positive displacement reciprocating multi-cylinder pump has a pair of cams and associated bearings and yokes that cooperatively and positively reciprocate the pistons. The fluid flow paths are configured through specially designed intake and outlet manifolds to provide intrinsic cooling of the bearings through specially configured fluid flow paths at distal ends of the pump. An intentional head geometry that is identical for each piston may be readily machined using exterior bores. Each head defines a cylinder, captures both inlet and outlet one-way valves, and provides essential fluid flow paths about the cylinders. All bearings are of the sealed type, and no additional oil baths or the like are required, permitting the pump to be stored, transported, and used in any orientation.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: November 3, 2020
    Assignee: Pumptec Inc.
    Inventor: Stephen E. Babcock
  • Patent number: 10753544
    Abstract: A planetary drive system that aligns four fluid ends for a pump or four compressor cylinders in the same plane, allowing for four fluid ends/compressor cylinders to be driven by one rotation of the pump's motor. Additionally, the planetary drive system is stackable to allow, for example eight, twelve, or other multiples of fluid ends or compressor cylinders to be driven while minimizing any reduction in output pressure. The chemical injection pump also includes threaded vents on the fluid ends to capture chemicals primed through the valves to avoid spillage and waste during the priming process. The air compressor cylinders also include pistons with enhanced vacuum actuation under a flexible inlet (e.g. flapper inlet).
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: August 25, 2020
    Inventor: Anthony Steven Froehler
  • Patent number: 10569915
    Abstract: The invention is directed to a packaging machine with a fluid pump assembly of the radial cylinder type, the assembly comprising a plurality of at least three pumps. Each pump has a piston guided in a cylinder, as well as a high pressure port and a low pressure port. A manifold is provided connecting the high pressure ports of a first group of first stage pumps so that the pumps of this first group are operatively connected in parallel, while at least one second stage pump is operatively connected to the first group of pumps in series. The invention is further directed to a method for generating a vacuum in a packaging machine with a fluid pump assembly.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: February 25, 2020
    Assignee: Multivac Sepp Haggenmüller SE & Co. KG
    Inventor: Marco Zucchini
  • Patent number: 10487827
    Abstract: There is provided an airless paint spray pump wherein the pump is a double acting piston pump having an inlet communicating with a source of paint, a motor for driving the pump, a pressure controller for controlling the pressure of the pressurized paint delivered by the pump, and a filter for filtering the paint delivered by the pump. The pump includes features which increase the accessibility of the components thereof, prevent the incorrect installation of the seal packings in the pump cylinder, and allow the assembly of the piston in the pump cylinder properly aligned with the cylinder so as not to damage the seal packings therein.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: November 26, 2019
    Assignee: TriTecch Industries, Inc.
    Inventors: Danuta H. Carey, Christopher M. Walsh
  • Patent number: 10294901
    Abstract: A vehicle fuel pump module includes a jet pump assembly and feed tube that delivers fuel to the assembly. The module includes, a first choke and a second choke. The first choke is disposed in the feed tube and provides filtering of the fluid and a reduction of pressure within the feed tube. The second choke is disposed in the jet pump assembly and provides a reduction of pressure of fluid within the jet pump assembly. The first and second chokes each include a choke housing that defines a passageway that extends between a fluid inlet and outlet, and a slot that is formed in a surface of the passageway. A ball is fixed within and obstructs the passageway, and abuts the slot. A fluid path defined between the ball and surfaces of the slot provides fluid communication between the fluid inlet and outlet of the choke housing.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: May 21, 2019
    Assignees: Robert Bosch LLC, Robert Bosch GmbH
    Inventors: Paul Mason, David Toutant
  • Patent number: 10228710
    Abstract: A water valve includes a valve body, a stationary sleeve, and a movable sleeve. The stationary sleeve is received in the valve body, and the movable sleeve is slidably disposed in the stationary sleeve. A partition plate is formed in the movable sleeve to partition the movable sleeve into a cold water cavity and a hot water cavity at two ends respectively. An external wall of the movable sleeve is formed with an annular groove positionally corresponding to the partition plate. When the partition plate is pushed under different pressure of cold water and hot water, the movable sleeve is moved to regulate flow ratio of cold water and hot water. Besides, water is received in the annular groove and the gap between the stationary sleeve and the movable sleeve for cushion and lubrication. Thus, the movable sleeve is easier to move for regulation.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: March 12, 2019
    Inventor: Tsai-Chen Yang
  • Patent number: 10184470
    Abstract: A segmented fluid end is provided, the fluid end comprising a plurality of fluid end segments, each comprising a plunger manifold, intake head, and pressure head. In preferred embodiments, the fluid end comprises three fluid end segments (“triplex”) or five fluid end segments (“quint”). The plunger manifold comprises first and second mounting surfaces, each comprising a fluid opening. An intake head mounting flange is adapted to be removably coupled to the first mounting surface and a pressure head mounting flange is adapted to be removably coupled to the second mounting surface. The plunger manifold comprises a plunger mounting member comprising a plunger opening adapted to receive a plunger. The pressure heads are adapted for cooperative coupling to adjacent pressure heads, such that, when coupled, the pressure heads are in fluid communication with one another. Methods of replacing the fluid end segments, plunger manifolds, pressure heads, and intake heads are provided.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: January 22, 2019
    Inventor: W. H. Barnett, Jr.
  • Patent number: 10125750
    Abstract: A system and method for machinery performing work with hydraulic actuators. Radial hydraulic pumps are aligned end-to-end along a common driveshaft axis to form a multi-pump assembly having a plurality of piston/cylinder units extending in a radial direction. Two or more piston/cylinder units are associated with one another to form multiple piston/cylinder groups. A plurality of control valves combines individual output flows from the two or more associated piston/cylinder units into respective common output flows for each respective piston/cylinder group. A plurality of flow control devices varies the common output flow from each respective piston/cylinder group by throttling inlet flow to the two or more associated piston/cylinder units in each respective piston/cylinder group. Each respective common output flow is directed from each respective piston/cylinder group to a hydraulic actuator on the heavy machinery to control its direction of movement.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: November 13, 2018
    Assignee: HUSCO International, Inc.
    Inventors: Joe Pfaff, Bradley Kramer, Dwight Stephenson, Eric Hamkins
  • Patent number: 10087756
    Abstract: A hydraulic machine includes radial cylinders including, oscillating radial cylinders arranged in a crown or star of cylinder-piston units, the pistons of the groups are made slidable on a crankshaft or with a cam, or on interposed members concentric to it, and realizing the reciprocating motion in the oscillating cylinders. The oscillating cylinders are placed in contact with a surface of distribution concentric or corresponding to the surface of oscillation of the respective cylinder on which a distributor body is placed separate from the machine body and housed in a seat in the body, or part fixed to the body, of the hydraulic machine, and each distributor body is mobile in its seat under the action of the pressure of liquid in connection on the back surface of the distributor body against the surface of distribution of the oscillating radial cylinder subject to the distribution.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: October 2, 2018
    Assignee: S.A.I. SOCIETA' APPARECCHIATURE IDRAULICHE S.P.A.
    Inventor: Vittorio Pecorari
  • Patent number: 9989022
    Abstract: A fuel system includes a low-pressure fuel delivery unit; a high-pressure fuel delivery unit which has a drive region and a delivery region such that the drive region supplies fuel to the delivery region and such that the delivery region supplies fuel to a high-pressure fuel injector; a low-pressure fuel supply passage which supplies fuel from the low-pressure fuel delivery unit to the drive region of the high-pressure fuel delivery unit; a cooling passage which receives fuel from the drive region of the high-pressure fuel delivery unit; and a low-pressure fuel injector supply passage which is in direct fluid communication with the low-pressure fuel supply passage and which supplies fuel to a low-pressure fuel injector from the cooling passage.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: June 5, 2018
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Joseph G. Spakowski, Timothy D. Spegar
  • Patent number: 9784252
    Abstract: A hydrostatic radial piston machine includes a radial cylinder block with cylinder bores which extend from an outer circumferential surface of the radial cylinder block into an interior of the radial cylinder block; a number of pistons which corresponds to the number of cylinder bores; a cam ring, and ends of the pistons which face away from the radial cylinder piston block are supported movably on an inner circumferential surface of the radial cylinder block during a rotation of the radial cylinder block; two control plate elements which extend respectively with a face oriented towards the radial cylinder block towards a central plane of the radial cylinder block, which central plane is perpendicular to the rotation axis. Each control plate element includes a bearing portion in which radially acting forces are transferable to a respective mating surface in the housing or housing cover mounted in the housing.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: October 10, 2017
    Inventor: Juergen Berbuer
  • Patent number: 9759207
    Abstract: An air compressor includes an air storage container, a cylinder fitted with a piston body and a main frame for mounting a motor. The cylinder and the main frame are integrally formed of plastic. The air storage container is detachably mounted to the cylinder. The main frame is provided with though holes for guiding the air flow, generated by a cooling fan, to flow through the main frame. The main frame is formed with two lateral walls and a bottom wall to form a U-shaped wind collecting shell. The second portion of the main frame is held by multiple radial braces, which facilitates the air flow being introduced through the main frame for rapidly dissipating the heat generated from the reciprocating motion of the piston body, so that the operational security can be increased. The non-metal air compressor may lead to a reduction of the manufacturing cost and the weight.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: September 12, 2017
    Inventor: Wen-San Chou
  • Patent number: 9726128
    Abstract: During a pressurization stroke of a high-pressure pump, a cylinder inner wall and a plunger receive a fuel pressure from the pressurization chamber. Meanwhile, an upper housing does not receive the fuel pressure from the pressurization chamber, so that its thickness can be made thin. A cylinder is comprised of a bottom portion, a cylindrical portion and a large-diameter cylindrical portion. When inserting the large-diameter cylindrical portion into a large engaging hole, the bottom portion and the cylindrical portion are not brought into contact with a lower housing. A high liquid-tightness between the bottom portion, the cylindrical portion and a small engaging hole can be ensured.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: August 8, 2017
    Assignee: DENSO CORPORATION
    Inventors: Masatoshi Kuroyanagi, Mamoru Urushizaki, Yasuaki Matsunaga
  • Patent number: 9719472
    Abstract: A valve arrangement for a high pressure pump includes a pump housing with a depression, and a valve housing configured to be inserted in the depression, and a clamping disc. The valve housing has at least one radial projection with a first axial boundary surface and a second axial boundary surface arranged opposite the first axial boundary surface, wherein the clamping disc extends radially over the radial projection of the valve housing and has a third axial boundary surface that corresponds with the second axial boundary surface of the valve housing. On the circumferential side, the clamping disc has a thread that can be screwed into a thread on the inner side of the depression to brace the valve housing onto the first boundary surface.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: August 1, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Andreas Muehlbauer, Matthias Bleeck, Burhan Dagdelen, Joerg Bernhardt, Juergen Bohmann
  • Patent number: 9670916
    Abstract: A compressor including a motor, a piston reciprocating by the motor, a crankcase having a middle wall portion formed with a communication hole, the crankcase housing the piston, a cylinder body secured to an inner surface of the middle wall portion, the cylinder body and the wall portion defining a cylinder chamber, and reciprocation of the piston increasing or decreasing a capacity of the cylinder chamber, and a cylinder head secured to an outer surface of the middle wall portion, the cylinder head and the middle wall portion defining an exhaust chamber communicated with the cylinder chamber through the communication hole.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: June 6, 2017
    Assignee: SHINANO KENSHI CO., LTD.
    Inventor: Kazuhiro Ueda
  • Patent number: 9586565
    Abstract: In a hydraulic unit of a vehicle brake system having a first pump element, which is assigned to a first brake circuit, and a second pump element, which is assigned to a second brake circuit, the second pump element has a different delivery from the first pump element.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: March 7, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Reiner Fellmeth, Wolfgang Schuller
  • Patent number: 9567960
    Abstract: A fuel pump assembly for an internal combustion engine includes a fuel pump housing, a cylindrical bore defined in the fuel pump housing, and a tappet assembly received in the cylindrical bore. The tappet assembly includes a one-piece shoe having a recess disposed in a bottom portion thereof, and a roller that is partially received within the recess and configured to rotate about a roller axis.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: February 14, 2017
    Assignee: Cummins Inc.
    Inventors: John D. Crofts, Justin Gregory Wenger
  • Patent number: 9518466
    Abstract: The invention relates to a hydraulic apparatus (1) including: a casing (6) defining a first assembly; a shaft (2) defining a second assembly; said first and second assemblies being freely rotatable relative to one another; a multi-lobe cam (3) rotatably connected to one of said first or second assembly; a dispenser (51) and a dispenser cover (52); a cylinder block (4) mounted such as to be freely rotatable relative to said first and second assemblies and including a means for rotatably engaging relative to the other of said assemblies, characterized in that the hydraulic apparatus (1) includes a return means for moving the cylinder block (4) in order to rotatably disengage same from said first or second assembly, and in that the dispenser (5) is configured, when applying pressure, to rotatably engage the cylinder block (4) relative to the other of said first or second assembly.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: December 13, 2016
    Assignee: POCLAIN HYDRAULICS INDUSTRIE
    Inventors: Stephane Vidal, Herve Desumeur, Jean Heren, Clement Recoura, Gilles Lemaire
  • Patent number: 9127631
    Abstract: A fuel pump for a direct injection system provided with a common rail; the fuel pump has: at least one pumping chamber defined in a main body; a piston which 5 is mounted sliding inside the pumping chamber; a suction channel connected to the pumping chamber and regulated by a suction valve; a delivery channel connected to the pumping chamber and regulated by a delivery valve; and a high pressure connection, which is welded by a ring weld 10 to a wall of the main body at the delivery channel, has the function of allowing a connection to a supply duct that feeds the fuel under pressure to the common rail, and has internally a passing through channel through which the fuel coming from the delivery channel flows 15 towards the supply duct.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: September 8, 2015
    Assignee: MAGNETI MARELLI S.P.A.
    Inventors: Michele Petrone, Enrico Vezzani, Massimo Mattioli
  • Patent number: 9080559
    Abstract: A radial cylinder hydraulic motor includes oscillating cylinders, in proximity to the outer skirt to the crown or star of cylinder-piston groups; the pistons of the said groups slide on a crankshaft or eccentric shaft, or on interposed organs concentric to it, and create alternate motion in the oscillating cylinders. A respective surface of oscillation for each cylinder of the said groups, in proximity to the outer skirt, is constituted by a portion of cylindrical surface with axial direction parallel to the axis of rotation of the crankshaft or eccentric shaft and positioned in the part of skirt including the diametral plane of lying of the said crown or star of radial cylinders.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: July 14, 2015
    Assignee: R. & D. S.R.L.
    Inventor: Pierce-lestino Pecorari
  • Patent number: 9074591
    Abstract: There is provided a compressor including a hermetic container storing therein a lubricant, an electric element, and a compression element driven by the electric element, the compression element including a crankshaft, a bearing portion, a cylinder block, a piston, and a joining portion, wherein a cylinder head is tightened and fixed together with a valve component by a bolt to an opening surface side of a compression chamber formed by a cylinder bore and the piston, and a screw hole portion formed in the opening surface side, for fixing the bolt includes a counterbore extending to the vicinity of a boundary between the cylindrical portion and the tapered portion.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: July 7, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Ichiro Kita
  • Patent number: 9061667
    Abstract: The invention relates to a hydraulic piston pump, particularly for a slip-controllable vehicle braking system. A piston pump according to the invention includes a hydraulically permanently permeable stopper, the throughflow of which is carried out as a function of the pressure in an outflow channel of the piston pump. A pressure medium flow only takes place if the pressure level in the outflow channel has exceeded a threshold value. The latter takes place, for example, if the kinematic viscosity of the flowing pressure medium decreases due to low ambient temperatures, or if a throughflow of the outflow channel is obstructed. By means of the proposed solution, excess pressure increases in the interior of the piston pump can be avoided, and the resulting loads for the pressurized pump components and the drive can be reduced. Otherwise, the operating behavior of the piston pump according to the invention corresponds to that of a known piston pump.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: June 23, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Schuller, Juergen Reiner
  • Patent number: 9011121
    Abstract: A device that enhances compressor efficiency by reducing pressure losses in a discharge muffler space into which is discharged a refrigerant compressed by a compression unit. A low-stage discharge muffler space is formed in the shape of a ring around a drive shaft. In the low-stage discharge muffler space, a communication port flow guide is provided so as to cover a predetermined area of an opening of a communication port from a side of a flow path in a reverse direction out of two flow paths in different directions around the drive shaft from a discharge port through which is discharged the refrigerant compressed by a low-stage compression unit to the communication port through which the refrigerant flows out. The communication port flow guide transforms a direction of a flow into a direction of a connecting flow path.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: April 21, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuhide Yokoyama, Raito Kawamura, Kei Sasaki, Shin Sekiya, Taro Kato, Masao Tani, Atsuyoshi Fukaya, Takeshi Fushiki
  • Publication number: 20150044072
    Abstract: Compressor unit (12) of a compressor (10) for compressing refrigerant, comprising a drive device, particularly a drive shaft (24), for driving one or more pistons (14) that are arranged in a radial direction and that can be moved back and forth in extension and retraction movements in corresponding cylinder bores (16), wherein the drive device is in operative engagement with an eccentric (28) that controls the extension movement of the pistons (14), said eccentric (28) also controlling the retraction movement of the piston (14), the invention further relating to a corresponding compressor (10).
    Type: Application
    Filed: March 19, 2013
    Publication date: February 12, 2015
    Inventor: Arno Görlich
  • Publication number: 20150013327
    Abstract: A hydroelectric power system and pump suitable for the system are disclosed which can make efficient use of the energy available in water flows with considerably variable flow rates. A simple, compact variable displacement axial piston pump can be operated so as to provide an essentially constant output pumping pressure and variable output volume that varies efficiently in accordance with water flow rate. The system is particularly suitable for shoreline tidal power generation and provides firm power output throughout the tidal slacks occurring during the tidal reversals.
    Type: Application
    Filed: January 22, 2013
    Publication date: January 15, 2015
    Inventor: Laird Galen Bateham
  • Patent number: 8932029
    Abstract: In the rotary type cylinder device, a first crank shaft is revolved around a shaft and a composite piston assembly is revolved around the first crank shaft in a state where first rotational mass balance relating to first and second piston units around second virtual crank shafts, second rotational mass balance relating to the composite piston assembly around the first crank shaft and third rotational mass balance relating to the first crank shaft and the composite piston assembly around the shaft are uniformly produced by only first and second balance weights which are attached to end parts of the first crank shaft. Therefore, first and second piston units, which are attached to the second cylindrical sections, are linearly reciprocally moved in radial directions of a circular orbit of second virtual crank shafts, which has radius of 2 r, with relatively revolving around the shaft.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: January 13, 2015
    Assignee: Yugen Kaisha K. R & D
    Inventor: Fumito Komatsu
  • Publication number: 20140377088
    Abstract: A variable displacement swash plate type compressor having high controllability and capable of exhibiting high mounting performance and securing sufficient compression capacity is provided. The compressor of the present invention comprises a first cylinder block 21 and a second cylinder block 23, and an actuator 13. The actuator 13 includes a movable body 13a, a fixed body 13b, and a control pressure chamber 13c. A first cylinder bore 21a and a first storage chamber 21c are formed in the first cylinder block 21. A second cylinder bore 23a and a second storage chamber 23c are formed in the second cylinder block 23. The first cylinder bore 21a is formed to have a diameter smaller than the diameter of the second cylinder bore 23a.
    Type: Application
    Filed: June 13, 2014
    Publication date: December 25, 2014
    Inventors: Shinya YAMAMOTO, Takahiro SUZUKI, Kazunari HONDA, Kei NISHII, Yusuke YAMAZAKI
  • Patent number: 8915719
    Abstract: The present invention teaches providing heating elements into the nose of an intermediate distance piece of a cryogenic reciprocating pump in order to warm the piston packing seals of the pump. The heating elements increase the temperature of the piston packing seals to limit deformation of the seals while the pump is in operation. In addition, a warm, dry vapor purge may be provided to the interior of the intermediate distance piece to reduce or eliminate rime from interfering with the piston packing seals.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: December 23, 2014
    Assignee: Air Products and Chemicals, Inc.
    Inventor: John Charles Street
  • Patent number: 8894384
    Abstract: A multi-piston motor/pump is disclosed particularly useful for air motor applications incorporating a cylinder block having a plurality of radially extending pistons and cylinders. Each cylinder is provided with a bronze insert at the top of the cylinder having an intake and exhaust port therein. Rotary valves are mounted on an output shaft and include axial flanges having openings therein that align with the input or exhaust openings in each cylinder. As the rotary valves rotate, the openings therein sequentially align with the input/exhaust ports provided in the bronze inserts such that air or fluid entering each cylinder enters axially of the cylinder. A center mounting plate is secured to the cylinder block and separates the input ports from the exhaust ports to enable fluid flow into the input ports and exhaust from the exhaust ports while isolating each port from the adjacent port in each cylinder.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: November 25, 2014
    Inventor: George Konrad
  • Patent number: 8863644
    Abstract: A lubricant supply mechanism is provided to an upper portion of a cam. A fixing member of the lubricant supply mechanism includes a recovery blade as a lubricant recovery member having lower end portions in contact with side face peripheral edge portions of the cam. The lower end portions of the recovery blade are in contact with the side face peripheral edge portions of the cam. An angle ?, which the lower end portions of the recovery blade make with a direction of rotation of the cam is smaller than 90°.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: October 21, 2014
    Assignee: Shimadzu Corporation
    Inventor: Masanori Fujiwara
  • Publication number: 20140294617
    Abstract: A piston type swash plate compressor includes a housing, a cylinder block, a cylinder head, a rotary shaft, a plurality of cylinder bores, a plurality of pistons, a swash plate, a plurality of compression chambers, a plurality of head-side discharge chambers, a plurality of block-side discharge chambers, an outlet and a discharge path. The head-side discharge chambers are provided in the cylinder head. The block-side discharge chambers are provided in the cylinder block. The outlet is formed through the housing. The discharge path is formed in the housing and refrigerant gas is flowed through the discharge path from the compression chamber to the outlet through the head-side discharge chamber to the block-side discharge chamber. After refrigerant gas flowed from the compression chamber is flowed through one head-side discharge chamber which communicates with the compression chamber and one block-side discharge chamber, the refrigerant gas is flowed to another head-side discharge chamber.
    Type: Application
    Filed: March 21, 2014
    Publication date: October 2, 2014
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Jun KONDO, Nobutoshi BANNO, Toshiyuki KOBAYASHI, Naoki GOTO
  • Patent number: 8800306
    Abstract: A refrigerant recovery machine includes two opposed and off-set pistons. The pistons are received in cylinders that are able to move depending on the alignment of the pistons.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: August 12, 2014
    Assignee: Bosch Automotive Service Solutions LLC
    Inventors: Michael Steven Schoenoff, Mark McMasters
  • Publication number: 20140199187
    Abstract: A pump system has a piston pump. The piston pump has a cylinder block with an inlet port, an outlet port, and a plurality of cylinders. Each cylinder in the plurality of cylinders is connected to the inlet port by an inlet passage and to the outlet port by an outlet passage. The piston pump has a plurality of pistons disposed in the plurality of cylinders. A drive shaft drives the pistons within the cylinders. A throttle member independently throttles flow in each inlet passage. The pump system has an electrohydraulic actuator governing movement of the throttle member.
    Type: Application
    Filed: January 15, 2013
    Publication date: July 17, 2014
    Applicant: HUSCO International, Inc.
    Inventors: David Schedgick, Bradley Kramer, Joe Pfaff
  • Publication number: 20140134008
    Abstract: A pump is disclosed. The pump may have a housing, and a body disposed within the housing and at least partially defining a plurality of barrels. The pump may also have a plurality of plungers associated with the plurality of barrels, and a plunger engagement surface. The plunger engagement surface may have geometry configured to reciprocate the plurality of plungers within the plurality of barrels as the plurality of plungers rotate relative to the plunger engagement surface, and a plurality of undulations configured to reduce a flow pulsation of the pump.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 15, 2014
    Applicant: Caterpillar Inc.
    Inventors: Viral S MEHTA, Bryan E. Nelson
  • Patent number: 8721300
    Abstract: A reciprocating compressor or pump features a manifold arranged not only to define a hollow interior for receiving fluid discharged from a plurality of cylinders but also to define a base or frame on which the cylinders are carried. Unique valves formed in part by flexible material reduces the likelihood of fatigue and increases efficiency by retaining less heat relative to conventional reed valves. A compressor or pump mounted at an end of a handle extending parallel to a motor housing likewise extending from the compressor or pump provides an easy to carry portable assembly. A fan mounted between a motor and a compressor pulls air through the compressor inlet to both cool the motor and feed the compressor. A portable tool system powers both pneumatic and electric tools. Connecting rod structures for radial compressors or pumps provide improved strength and easier assembly.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: May 13, 2014
    Inventors: Larry Alvin Schuetzle, Lloyd Dean Penner
  • Patent number: 8708667
    Abstract: A fuel pump assembly for a fuel injection system comprises a drive shaft, at least two pump heads each of which is axially displaced along the drive shaft, each pump head having a respective plunger for pressurising fuel within a respective pump chamber, and at least two cams provided on the drive shaft, each of which is associated with a respective one of the pump heads. Adjacent pump heads are offset angularly from one another by an amount sufficient to allow a region of overlap, in an axial direction along the drive shaft, between the adjacent pump heads.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: April 29, 2014
    Assignee: Delphi International Operations Luxemboug S.A.R.L.
    Inventor: Peter Alban George Collingborn
  • Patent number: 8684704
    Abstract: A first aspect of the invention includes a multi-stage gas compressor having a central cam with a plurality of pistons operably connected to and radially extending from the central cam. The cam follower assemblies each include a roller element connected to a roller bracket which rides within and along a guide channel defines by facing grooves formed in housing end plates.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: April 1, 2014
    Assignee: Carleton Life Support Systems, Inc.
    Inventors: Timothy Raleigh, Sammy Mickelson, Robert Francois, Scott H. Harvey, Kevin Hurley
  • Patent number: 8622719
    Abstract: A hydraulic pump unit includes a cylindrical member that is fit into an outer circumference of the main shaft and a hydraulic pump body arranged on an outer circumferential side of the cylindrical member. The hydraulic pump body includes a ring cam mounted on the outer circumference of the cylindrical member, a pump bearing, a pump housing, a plurality of pistons housed in the pump housing and actuated by the ring cam, and a plurality of cylinders which guide the plurality of pistons in a radial direction and are arranged in a circumferential direction. The hydraulic pump unit is configured such that the pump unit is insertably fixed to the main shaft by the cylindrical member.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: January 7, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Kazuhisa Tsutsumi, Noguchi Toshihide, Yasuhiro Korematsu, Masayuki Shimizu, Alasdair Robertson, Uwe Stein, Hauke Karstens
  • Publication number: 20130343915
    Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons, a second plurality of pistons, a first cam, a second cam, and a cam rotation device. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The first cam is disposed about the first plurality of radially extending cylinders. The second cam is disposed about the second plurality of radially extending cylinders. The cam rotation device is coupled to the first cam and the second cam. The cam rotation device is operable to rotate the first cam in a first direction and the second cam in a second direction.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Carlos A. Fenny, James E. Sobel
  • Publication number: 20130343923
    Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons, a second plurality of pistons, a first cam, a second cam, and a coupling device. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The first cam is disposed about the first plurality of radially extending cylinders. The second cam is disposed about the second plurality of radially extending cylinders. The coupling device is operable to couple the cylinder block to a cylinder block of a second radial fluid device.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Carlos A. Fenny, James E. Sobel
  • Publication number: 20130343914
    Abstract: According to one embodiment, a radial fluid device comprises a cylinder block, a first plurality of pistons including a first piston, and a second plurality of pistons including a second piston. Each of the first plurality of pistons are slidably received within a different one of a first plurality of radially extending cylinders. Each of the second plurality of pistons are slidably received within a different one of a second plurality of radially extending cylinders. The second piston is configurable to begin its stroke at a different time relative to the first piston within the first cylinder pair.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 26, 2013
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Carlos A. Fenny, James E. Sobel
  • Patent number: 8608455
    Abstract: A fluid rotary machine with a decreased footprint and a reduction in the number of parts. The fluid rotary machine has four heads wherein double-headed pistons are disposed inside cylinders in a crisscross arrangement. The rotational balance between rotational parts including the double-headed pistons is achieved only by first and second balance weights which are inserted and incorporated into both ends of a crank shaft coupled eccentrically to a shaft. The shaft is rotated for the double-headed pistons to linearly reciprocate in the cylinders. The fluid rotary machine has rotary valves for switching between the suction and discharge operations of the fluid for each cylinder chamber. The rotary valves are incorporated into a case to be coaxial and integrally rotatable with the shaft.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: December 17, 2013
    Assignees: Nippo Ltd., Yugen Kaisha K.R & D
    Inventors: Naoya Ishida, Isao Shimazu, Fumito Komatsu
  • Patent number: 8608454
    Abstract: In a swash-plate type hydrostatic piston engine, a drive unit (10) and a swash plate (17) are received by a pot-shaped housing (1b). According to the invention, the pot-shaped housing (1b) is configured such that it is able to receive drive units (10a, 10b) of at least two rated quantities of a specific product series of the hydrostatic piston engine.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: December 17, 2013
    Assignee: Brueninghaus Hydromatik GmbH
    Inventors: Guenter Wanschura, Juergen Gintner
  • Patent number: 8596992
    Abstract: A pump system has a rotatory shaft and a rotatory drive arrangement coupled to the rotatory shaft for applying rotatory energy thereto. First through fourth pump arrangements are coupled to the rotatory shaft, each pump arrangement pumping a pulse of air during each rotation of the rotatory shaft, the first, second, third, and fourth pump arrangements pumping a corresponding pulse of air sequentially during each rotation of the rotatory shaft. The rotatory shaft has a first and second ends, and a central region therebetween where an electric motor is coaxially arranged. The first and third pump arrangements are coupled to the first end of the rotatory shaft, and the second and fourth pump arrangements are coupled to the second end of the rotatory shaft. Angularly displaced eccentric couplers couple the pump arrangements to the respective ends of the rotatory shaft.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: December 3, 2013
    Assignee: L•VAD Technology, Inc.
    Inventors: Paul G. DeDecker, Paul S. Freed
  • Patent number: 8545195
    Abstract: The invention is a hydrogen generator including a pump for pumping a liquid from a reservoir to a reaction area, where the liquid reacts to produce hydrogen gas, and a fuel cell system including the hydrogen generator and a fuel cell stack. The pump is a diaphragm pump with mechanically operated liquid inlet and outlet valves that are opened by cam-operated pushrods, and the pushrods are isolated from the liquid flowpath through the pump by diaphragms. All valves in the liquid flow path between the liquid reservoir and the reaction area are mechanically operated valves.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: October 1, 2013
    Assignee: Eveready Battery Co., Inc.
    Inventor: Russell H. Barton