Rotary Expansible Chamber Pump Patents (Class 417/310)
  • Patent number: 10823170
    Abstract: A transmission device (1) has a double-flow sliding vane pump (4). Hydraulic fluid is supplied to suction sides (5A, 5B) of the pump (4) through an inlet area (14) from a hydraulic fluid reservoir (11) and from a suction loading (16) via an annular chamber (7) and pump inlets (9, 10). The annular chamber (7) is delimited by the cam ring (6) and a housing (8) enclosing the cam ring (6). A sealing gap (17) extends in the circumferential direction (U) between one of the pump inlets (10) and a circumferential area (44) of the cam ring (6) delimiting the inlet area (14) from the hydraulic fluid reservoir (11). Courses (19, 20) of the inlet area (14) and of the suction loading (16) installed in the transmission device (1) respectively form a first angle (?) and a second angle (?) with the vertical axis (21) of the transmission device (1).
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: November 3, 2020
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Carl Schilling, Martin Brehmer, Markus Gentner, Armin Thiele
  • Patent number: 10801496
    Abstract: The invention relates to a positive-displacement machine according to the spiral principle, particularly a scroll compressor, having a high-pressure region, which comprises a high-pressure chamber, furthermore having a low-pressure chamber and an orbiting positive-displacement spiral, which engages into a counterpart spiral in such a manner that compression chambers are formed between the positive-displacement spiral and the counterpart spiral, in order to accommodate a working medium, wherein a counterpart-pressure chamber is constructed between the low-pressure chamber and the positive-displacement spiral.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: October 13, 2020
    Assignee: OET GmbH
    Inventors: Frank Obrist, Christian Schmälzle, Christian Busch
  • Patent number: 10794408
    Abstract: There is disclosed a method of generating an alert relating to a hydraulic actuation system for actuating a hydraulic cylinder, the hydraulic control system comprising a hydraulic fluid tank and a hydraulic fluid filter. The method comprises monitoring the pressure drop over the hydraulic fluid filter; determining a rate of change characteristic relating to the rate of change of pressure drop over at least one time period in which there is a hydraulic fluid flow through the hydraulic fluid filter; determining whether the hydraulic fluid is dirty based on at least the rate of change characteristic; and generating an alert if it is determined that the hydraulic fluid is dirty.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: October 6, 2020
    Assignee: Hyva Holding B.V.
    Inventors: Marek Baldys, Maarten Hertog, Jacob Biemond
  • Patent number: 10584905
    Abstract: A linear compressor is provided that may include a casing, a compressor body accommodated in the casing and defining a compression space for a refrigerant, a suction pipe coupled to a first side of the casing to supply the refrigerant to the compression space, a discharge pipe coupled to a second side of the casing to discharge the refrigerant compressed in the compression space outside of the casing, a process pipe coupled to the second side of the casing spaced apart from the discharge pipe to inject a refrigerant for supplement into the casing, and a separator that separates a mixed fluid of a refrigerant and oil injected through the process pipe.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: March 10, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Kyeongweon Lee, Jeehyun Kim, Joonsung Park, Byunghoon Woo, Youngcheol Han
  • Patent number: 10578106
    Abstract: A variable capacity scroll compressor includes a fixed scroll. The fixed scroll of the compressor includes a bypass flow path configured to connect a suction unit to a compression unit, a cylinder space provided on the bypass flow path, and an on/off valve disposed to be movable back and forth in the cylinder space to open/close the bypass flow path according to a difference between a discharge pressure of the discharge unit and a suction pressure of the suction unit. Thus a capacity of the compressor may be reduced by connecting the suction unit to the compression unit under a low load condition in which a difference between a discharge pressure and a suction pressure is relatively less.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: March 3, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yang Hee Cho, Moo Seong Bae
  • Patent number: 10557468
    Abstract: The pump housing includes a pair of sliding surfaces clamping the outer and inner gears from both their sides to allow both the gears to slide on the sliding surfaces, a suction port part suctioning fuel from outside into inside of the gear accommodation chamber, and a discharge port part discharging fuel from inside into outside of the gear accommodation chamber. At least one of the suction port part and the discharge port part includes an elongated groove that is depressed from the corresponding sliding surface and extends along a circumferential direction of the pump housing in a region opposed to the pump chambers, opening bores that open on the elongated groove from outside of the gear accommodation chamber, and ribs each of which is arranged between the corresponding adjacent two opening bores. The opening bores and the ribs are arranged alternately along an extending direction of the elongated groove.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: February 11, 2020
    Assignee: DENSO CORPORATION
    Inventors: Hiromi Sakai, Daiji Furuhashi
  • Patent number: 10451064
    Abstract: A compressor includes a discharge guide provided to communicate a discharge port and a bypass port to a discharge cover so that refrigerant discharged from the discharge port and the bypass port is guided to the discharge cover and a middle-pressure chamber formed by the fixed scroll, the back-pressure cover, and the discharge guide. The compressor according to the embodiments guarantees the space in which the bypass valve can be installed by a discharge guide mounted to a discharge portion of the fixed scroll, and at the same time forms the middle pressure portion, resulting in efficiency improvement of the compressor. The compressor according to the embodiments reduces noise and vibration generated from the discharge portion of the fixed scroll by the discharge guide.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: October 22, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-Hoon Park, Nam Kyu Cho, Yang Sun Kim
  • Patent number: 10428818
    Abstract: A scroll compressor according to the present invention includes a casing having a hermetic inner space divided into a low pressure portion and a high pressure portion, an orbiting scroll disposed within the inner space of the casing and performing an orbiting motion, a non-orbiting scroll forming a compression chamber together with the orbiting scroll, the compression chamber having a suction chamber, an intermediate pressure chamber and a discharge chamber, a back pressure chamber assembly coupled to the non-orbiting scroll to form a back pressure chamber, a valve accommodation groove formed on at least one of the non-orbiting scroll or the back pressure chamber assembly, a bypass hole formed from the intermediate pressure chamber into the valve accommodation groove in a penetrating manner, a check valve accommodated in the valve accommodation groove and opening and closing the bypass hole according to pressure of the intermediate pressure chamber, a communication passage communicating the valve accommodatio
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 1, 2019
    Assignee: LG Electronics Inc.
    Inventors: Honggyun Jin, Sangwoo Joo
  • Patent number: 10418878
    Abstract: An illustrative embodiment of the present disclosure includes a pump having a rotor and a plurality of vanes. The rotor is attached to a motor that rotates it in first and second directions and is located in a cavity. The plurality of vanes are each pivotally coupled to the rotor so as the rotor rotates, the vanes selectively push fluid from an inlet port out through an outlet port. The plurality of vanes each have an end selected from the group consisting of a lobe, no lobe, and a rod located in the lobe. Each of the plurality of vanes also includes a pivot pin configured to fit in a corresponding receptacle located in the rotor so that each of the plurality of vanes is pivotable with respect to the rotor inside the cavity.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: September 17, 2019
    Assignee: Tuthill Corporation
    Inventor: Jacob J. Berry
  • Patent number: 10240603
    Abstract: Methods, systems, and apparatuses are disclosed to isolate operation vibration of a compressor to reduce operational sound. A compressor may include an external shell, and one or more isolators that separate a compression mechanism of a compressor from the external shell. The isolator can help isolate the vibration of the compression mechanism from the external shell. The isolator can also support a weight of the compression mechanism. The external shell can also include one or more internal seals. The internal seals can help separate a low-pressure side (e.g., a suction side) and a high-pressure side (e.g., a discharge side) of the compression mechanism. The compressor may also include a pressure balancing mechanism configured to help reduce a pressure difference between, for example, two ends of the compression mechanism, so as to reduce/eliminate the compression mechanism from physical shift in position due to the pressure difference.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: March 26, 2019
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: William B. Rockwood, Pavak Mehta, Dennis M. Beekman, Daniel R. Crum, Timothy G. Garvin, Rodney L. Lakowske, Gordon Powell, Jr.
  • Patent number: 10190584
    Abstract: An electric pump includes a motor unit including a stator, a rotor core disposed inside the stator and a shaft coupled to the rotor core; a first pump unit and a second pump unit which are coupled using the shaft as a coaxial axis; a first housing in which a motor housing receiving the motor unit and a pump housing including a first pump accommodating part are integrally formed, the first pump unit being inserted in the first pump accommodating part; a second housing coupled to the first housing to cover the first pump accommodating part and including a second pump accommodating part in which the second pump unit is inserted; and a cover unit coupled to the second housing to cover the second pump accommodating part.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: January 29, 2019
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Ho Eop Yoon
  • Patent number: 10107256
    Abstract: A wye ring centering system is provided. The system includes a plurality of rollers configured for contacting a wye ring, and a plurality of mounting fasteners configured for supporting the plurality of rollers. Each of the mounting fasteners is configured to pass through a fan hub. The plurality of rollers and the plurality of mounting fasteners are distributed at substantially equal intervals around the fan hub. The wye ring is placed over the plurality of rollers to center the wye ring around a shaft.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: October 23, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Ulrich Werner Neumann, Mark Randall Stewart
  • Patent number: 10087953
    Abstract: Provided is an air blower for a fuel cell vehicle in which a bypass flow amount that ensures a surge margin is used to cool a motor to improve the efficiency of the motor. More specifically, a seal is arranged on a rear of an impeller and an air-through channel through which a part of the compressed air flows into the inside of the motor from an impeller housing case by forming an air-through aperture is formed therein to cool the motor.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: October 2, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Hanon Systems
    Inventors: Chang Ha Lee, Myung Ju Jung, Chiyong Park, Hyunsup Yang
  • Patent number: 10077773
    Abstract: Provided is a two-shaft rotary pump which is capable of improving reliability and operation efficiency by preventing an exhaust gas from flowing backward into a pump as much as possible, preventing the interior of the pump form being excessively compressed as much as possible, and suppressing temperature rise in the pump.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: September 18, 2018
    Assignee: Orion Machinery Co., Ltd.
    Inventors: Yosuke Yoshida, Shingo Harayama, Shun Miyazawa, Humihiko Yamada
  • Patent number: 10065604
    Abstract: A brushing system, including: a brush; and a hydraulic motor, for rotating the brush. The hydraulic motor is operable by pressurized water, and the pressurized water is administrable by outlets of the brush, thereby brushing of the brush is accompanied by the administrable water.
    Type: Grant
    Filed: May 14, 2017
    Date of Patent: September 4, 2018
    Inventors: Shmuel Bokobza, Menachem Mendel Lipsker
  • Patent number: 10012220
    Abstract: A pump arrangement is disclosed including a magnetically drivable micropump for pumping a liquid pumping medium, a bearing carrier as a base part, and an outer magnet and an inner magnet which transmit a torque to the micropump via an axial shaft. Three radial bearing pieces for the rotational mounting (guidance) of the shaft and of the micropump are positioned and fixed in the bearing carrier. The micropump is held in an eccentric bearing by a cover arranged at an end. A duct structure for a forced flow is provided including at least one radial duct portion in the cover and an axial duct portion in the bearing carrier to flush and/or to lubricate the bearings actively with the pumping medium. One of the bearings is arranged closer to the inner magnet and/or another of the bearings is arranged closer to the micropump.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: July 3, 2018
    Assignee: HNP MIKROSYSTEME GMBH
    Inventors: Astrid Matz, Sven Reimann, Martin Stojke, Gerald Voegele, Thomas Weisener
  • Patent number: 10006459
    Abstract: A claw pump includes: a housing; two rotating shafts which are disposed parallel; a pair of rotors respectively fixed to the two rotating shafts; a rotary drive device driving the pair of rotors; and a suction port and discharge ports formed in a partition wall of the housing. The discharge ports are constituted by a first discharge port and a second discharge port. The first discharge port is formed at a position that communicates with an initial stage compression space formed at an initial stage of a compression stroke in a compression space that is formed by joining a first pocket and a second pocket. The claw pump includes an opening/closing mechanism which opens the first discharge port when a pressure of the initial stage compression space reaches a threshold and closes the first discharge port when the pressure does not reach the threshold.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: June 26, 2018
    Assignee: ANEST IWATA CORPORATION
    Inventor: Kenichi Kobayashi
  • Patent number: 9989943
    Abstract: The embodiments disclosed herein are directed to systems and methods to control a HVAC system based on a state of an unloader of a compressor of the HVAC system.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: June 5, 2018
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Thomas J. Clanin, Scott A. Munns, Lee L. Sibik
  • Patent number: 9845802
    Abstract: An intake charged pump for pumping liquid and which has an intake duct that extends to the suction area of the pump. The pump has a duct through which a jet stream flows to the suction area. A nozzle arrangement in the intake duct accelerates the liquid which is returned via the jet stream and supports the suction of a suction stream of the liquid from a storage container. A nozzle of the nozzle arrangement leads into the mixing chamber at an acute angle in a such way that the jet stream, leaving the nozzle, creates a common mixing stream with the suction stream from the storage container, and through which partial streams having essentially the same pressure and energy content, can be delivered to the front and back suction pockets of the double chamber pump.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: December 19, 2017
    Assignee: ZF Friedrichshafen AG
    Inventors: Paolo Ruatto, Stephan Brussa, Marco Rosendahl, Thomas Kramer
  • Patent number: 9765930
    Abstract: A compressed natural gas (CNG) fueling system has a single compressor, a storage tank configured to receive CNG from the compressor, and a CNG feedback to the compressor from the storage tank.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: September 19, 2017
    Assignee: J-W POWER COMPANY
    Inventor: Richard Poorman
  • Patent number: 9745977
    Abstract: A pump includes: a housing in which a pump chamber accommodating an inner rotor and an outer rotor is formed in a pump chamber formation surface, and an O-ring groove is formed around the pump chamber; an O-ring that is placed in the O-ring groove; and a plate that is attached to the pump chamber formation surface and closely contacts the O-ring to close the pump chamber. Inter-hole grooves connecting to an outer edge of the pump chamber formation surface are formed around the O-ring groove.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: August 29, 2017
    Assignee: JTEKT CORPORATION
    Inventor: Takatoshi Sakata
  • Patent number: 9695825
    Abstract: A rotary compressor (100A) includes a closed casing (1), a compression mechanism (48), a lower end-face plate (34), and a communication hole (50). An oil reservoir (12) is formed at the bottom of the closed casing (1). The lower end-face plate (34) divides the oil reservoir (12) into a plurality of sections (12a) and (12b) in the vertical direction. The plurality of sections of the oil reservoir (12) communicate with each other through the communication hole (50). The communication hole (50) is located on the same side as a discharge port (8b) of the compression mechanism (48) with respect to a reference plane (H1).
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: July 4, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takumi Hikichi, Kentaro Shii, Masanobu Wada, Tadayoshi Shoyama
  • Patent number: 9664418
    Abstract: A variable-efficiency screw compressor for use in a closed-loop system configured to perform refrigeration is provided. The variable-efficiency screw compressor includes an inlet port to draw refrigerant into the variable-efficiency screw compressor, one or more rotating screws in fluid communication with the inlet port to compress the refrigerant, forming a compressed refrigerant, a discharge port in fluid communication with the rotating screws to receive the compressed refrigerant and discharge the refrigerant, wherein the discharge port includes an adjustable piston movable within the discharge port from a first position in which volume is higher to a second position in which volume is lower, the adjustable piston arranged and disposed to adjust volume of the discharge port in response to a change in demand.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: May 30, 2017
    Assignee: Johnson Controls Technology Company
    Inventor: Paul Nemit, Jr.
  • Patent number: 9638189
    Abstract: An oil pump structure including: an oil pump having a first hydraulic control chamber and a second hydraulic control chamber; a hydraulic control valve having a valve operating oil passage, a first inflow passage, a second inflow passage, a first outflow passage, a second outflow passage and a drain flow passage; and an oil circuit, wherein the hydraulic control valve is connected to a branching flow passage of the oil circuit; a spool valve body of the hydraulic control valve has a front valve section, a rear valve section and an intermediate valve section, which are formed perpendicularly to the axial direction of a connecting shaft; an axial-direction dimension of the intermediate valve section is larger than an axial-direction dimension of the second outflow passage; the second outflow passage and the drain flow passage are both accommodated temporarily between the intermediate valve section and the front valve section due to movement of the spool valve body; and in the hydraulic control valve, a control
    Type: Grant
    Filed: September 12, 2015
    Date of Patent: May 2, 2017
    Assignee: YAMADA MANUFACTURING CO., LTD.
    Inventors: Junichi Miyajima, Takatoshi Watanabe, Masato Izutsu, Masaki Ogawara
  • Patent number: 9638191
    Abstract: A compressor may include a first scroll member having a first spiral wrap, a first chamber, and a first aperture. A second scroll member may include a second spiral wrap engaged with the first spiral wrap to form a series of compression pockets and a second aperture. The first aperture may be in communication with a first of the compression pockets to provide communication between the first compression pocket and the first chamber. The second aperture may be in communication with a second of the compression pockets. A capacity modulation assembly may include a first piston preventing communication between the first aperture and a first passage when in a first position and providing communication when in a second position. A second piston may prevent communication between the second aperture and a third passage when in the first position, and provide communication when in a second position.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: May 2, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Robert C. Stover
  • Patent number: 9631619
    Abstract: A helical rotor intended to be arranged in a progressing cavity pump, said progressing cavity pump being capable of pumping a multiphase fluid from a fluid reserve, the helical rotor comprising at least one mixer capable of homogenizing the multiphase fluid located in said fluid reserve.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: April 25, 2017
    Assignee: PCM Technologies
    Inventors: Vasileios Kourakos, Souleymane Ramde
  • Patent number: 9581161
    Abstract: A scroll machine can include a shell, a first scroll member, a second scroll member and a valve assembly. The valve assembly can permit intermediate pressure in the shell to flow to an area of suction pressure in the shell. The valve assembly can include a first valve manifold that selectively couples to the shell. A second valve manifold can slidably and non-threadably locate against the first valve manifold. A retainer can couple to the first valve manifold to capture the second valve manifold against the first valve manifold. A valve can selectively connect an intermediate flow exiting the shell through the first and second valve manifolds to a suction flow entering the shell.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: February 28, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Larry L. Bingham, Keith J. Reinhart
  • Patent number: 9404496
    Abstract: An oil pump has a pump body, a pump cover, an outer rotor, and an inner rotor. The pump body includes a rotor chamber, a first inlet port, a first outlet port, a first inlet passage, a first outlet passage, a relief valve, a relief chamber formed on a discharge side of the relief valve, and a first oil return passage formed from the relief chamber to the first inlet passage. The pump cover has a second oil return passage. The first oil return passage is formed in an inner circumferential support wall of the rotor chamber as a groove-like recess and opens along an outer circumferential surface of the outer rotor. A support protrusion is formed near a portion where the second oil return passage is formed to support a front surface, in a radial direction, of the outer rotor.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: August 2, 2016
    Assignee: YAMADA MANUFACTURING CO., LTD.
    Inventors: Takamichi Inoue, Atsushi Yanagisawa
  • Patent number: 9353624
    Abstract: In a motor-driven scroll compressor of the present invention, a double-sided sliding bearing is provided a space between a drive bush and a boss portion. The double-sided sliding bearing has a cylindrical outer sliding member that is provided in the boss portion, and a cylindrical inner sliding member that is provided in the bush portion. In an outer boundary zone of an inner circumferential surface of the boss portion and an outer circumferential surface of the outer sliding member, and an inner boundary zone of an inner circumferential surface of the inner sliding member and an outer circumferential surface of the bush portion, relative rotation is generated. The outer sliding member and the inner sliding member have different lengths in an axial direction, and thereby form a first and a second steps at both ends in the axial direction.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: May 31, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takuro Yamashita, Ken Suitou, Kazuhiro Kuroki, Satoru Egawa
  • Patent number: 9334850
    Abstract: A wye ring centering system and method are provided. The system includes a plurality of rollers configured for contacting a wye ring, and a plurality of mounting fasteners configured for supporting the plurality of rollers. Each of the mounting fasteners is configured to pass through a fan hub. The plurality of rollers and the plurality of mounting fasteners are distributed at substantially equal intervals around the fan hub. The wye ring is placed over the plurality of rollers to center the wye ring around a shaft.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: May 10, 2016
    Assignee: General Electric Company
    Inventors: Ulrich Werner Neumann, Mark Randall Stewart
  • Patent number: 9249802
    Abstract: A compressor may include first and second scrolls, a hub plate and a valve. The first scroll may include an end plate defining first and second sides, a primary discharge passage extending therethrough, and a secondary discharge passage extending therethrough and located radially outward from the primary discharge passage. The hub plate may be mounted to the first scroll and may include first and second opposite sides and a hub discharge passage in fluid communication with the primary discharge passage. The first side of the hub plate may face the second side of the end plate and may include a valve guide extending axially toward the end plate adjacent the hub discharge passage. The valve member may be secured on the valve guide for axial movement between open and closed positions to respectively allow and restrict fluid communication between the secondary discharge passage and the hub discharge passage.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: February 2, 2016
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Roy J. Doepker, Michael M. Perevozchikov
  • Patent number: 9206690
    Abstract: A variable displacement pump includes: side walls provided on both sides of the cam ring in an axial direction; and an introduction passage which is formed on one of the separation walls across which the hydraulic chambers pass when the hydraulic chambers are moved from the suction portion to the discharge portion, which is arranged to shut off a connection between one of the hydraulic chambers and the control hydraulic chamber by an axial end surface of the cam ring when the cam ring is in a maximum eccentric state, and which is arranged to connect the one of the hydraulic chambers and the control hydraulic chamber by a movement of the cam ring in the direction to decrease the eccentric amount of the cam ring, and thereby to introduce the discharge pressure within the control hydraulic chamber to the one of the hydraulic chambers.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: December 8, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Dai Niwata, Koji Saga
  • Patent number: 9175766
    Abstract: A hydraulic pressure supply system of an automatic transmission for a vehicle is disclosed. The hydraulic pressure supply system is adapted to supply surplus hydraulic pressure recircluated from a high pressure portion and a shift control portion to a low pressure portion by connecting lines of the high pressure portion and the shift control portion to the low pressure portion.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: November 3, 2015
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Taehwan Wi, Ki Dong Kim, Kyung Moo Lee
  • Patent number: 9133845
    Abstract: A scroll compressor includes a back pressure chamber formed at the rear of a swivel scroll to support the swivel scroll, the swivel scroll swiveling while engaging with a stationary scroll to compress a refrigerant, and a back pressure adjustment device to automatically apply first middle pressure or second middle pressure lower than the first middle pressure to the back pressure chamber based on a compression ratio.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: September 15, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yang Sun Kim, Sung Hea Cho
  • Patent number: 9121276
    Abstract: Improved seal components for compressors, such as scroll compressors, are provided. Such seal components have a molded composite on a seal plate that is preformed, which serves as an improved face seal for floating seal assemblies. The preformed seal plate may be formed of a sintered powder metal or cast gray iron. The molded composite comprises a thermoplastic polymer and at least one reinforcing or lubricating particle. Methods of forming such seal components for a scroll compressor by injection molding are also provided.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: September 1, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Matthew J. Heidecker, Jeffrey Jay Lichty, Dennis D. Pax, Dale Joseph McEldowney, Todd A. Manning, Natalie M. Gehret
  • Patent number: 9103343
    Abstract: A high-performance oil pump for pumping oil in an internal combustion engine that eliminates or greatly reduces cavitation in the oil pump, thereby increasing the efficiency and performance of the oil pump. The present invention provides a housing having an inlet for receiving a supply of oil and an outlet for discharging the oil. At least two gears rotatably and matingly are disposed within the housing for pumping the oil from the inlet to the outlet. A pressure regulation circuit is disposed within the housing for balancing oil flow pressure between the inlet and the outlet by redirecting a portion of the oil from the outlet to the inlet when said oil flow pressure reaches a predetermined level at the outlet in order to reduce or eliminate cavitation of oil in the oil pump.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: August 11, 2015
    Assignee: Melling Tool Company
    Inventors: Michael J. Osterhaus, Nathaniel D. Stucky
  • Patent number: 9033689
    Abstract: The scroll refrigeration compressor includes a sealed casing, stationary and moving volutes including spiral wraps engaged in one another and defining the variable-volume compression chambers, a delivery chamber defined by the plate of the stationary volute and the sealed casing, a heat shield disposed in the delivery chamber and dividing the delivery chamber into a first volume defined by the plate of the stationary volute and the heat shield and a second volume defined by the heat shield and the sealed casing, and at least one flow passage arranged to communicate the first and second volumes. The compressor further includes at least one bypass passage arranged to communicate the first volume with an intermediate compression chamber, and at least one bypass valve disposed in the first volume and movable between closing and opening positions for closing and opening the corresponding bypass passage.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: May 19, 2015
    Assignee: DANFOSS COMMERCIAL COMPRESSORS
    Inventors: Pierre Ginies, Christophe Ancel
  • Patent number: 9017050
    Abstract: The scroll refrigeration compressor includes a stationary volute and a moving volute provided with spiral wraps defining variable-volume compression chambers, a separating member sealably mounted on a plate of the stationary volute so as to allow a relative movement between the separating member and the stationary volute, a delivery chamber at least partially defined by the separating member and the sealed casing. The compressor further includes a bypass passage arranged to communicate the delivery chamber with an intermediate compression chamber, and a anti-return device comprising a closing member movable between closing and opening positions for closing and opening the bypass passage, and an enclosure, positioned between the separating member and the plate of the stationary volute, including a first portion sealably mounted in a housing defined by the separating member and oriented substantially parallel to the longitudinal axis of the compressor.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: April 28, 2015
    Assignee: Danfoss Commercial Compressors
    Inventors: Pierre Ginies, Mickael Bron, Dominique Gross, Stephane Watts, Franck Meynand
  • Patent number: 9011124
    Abstract: An enclosed positive displacement mechanism including a body with an inlet and an outlet; a rotor mounted in the body and rotatable about a main axis; an orbiting piston located in the cavity, rotatable about an eccentric secondary axis and arranged to orbit around the main axis to roll on the internal side surface of the cavity; and a vane located in the cavity, slidable in the piston and mounted in the body between one inlet and one outlet so as to oscillate. The orbiting piston and the vane divide in cyclic manner the cavity into a first and a second chamber with variable volume, which are mutually complementary and communicate with the inlet and the outlet. During a portion of its oscillation, the vane passes through the piston and is in contact with the side surface of the cavity, thereby separating the chambers in a fluid-tight manner.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: April 21, 2015
    Assignee: VHIT S.p.A.
    Inventor: Leonardo Cadeddu
  • Patent number: 8979509
    Abstract: A screw compressor includes a casing and a compression mechanism accommodated in the casing. The compression mechanism has a screw rotor, a gate rotor and a communication mechanism. The gate rotor has a flat plate shape. A rotational axis of gate rotor is orthogonal to a rotational axis of the screw rotor. The communication mechanism is arranged to communicate a high pressure space and a low pressure space in the casing.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: March 17, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Norio Matsumoto, Hiromichi Ueno, Shigeharu Shikano
  • Patent number: 8939736
    Abstract: A fuel pump assembly may include a housing and a fuel pump within a fuel pump cavity. The fuel pump may include a motor, a pumping element driven for rotation by the motor, a pump body that maintains the position of the pumping element relative to the motor and the housing, and a flexible seal. The seal may be disposed between the pump body and the housing to provide a fluid tight seal between them. A portion of the seal may be disposed radially outwardly of a distal end of the pump body to radially position the pump body within the fuel pump cavity and a portion of the seal may be disposed axially outwardly of the distal end of the pump body to axially position the pump body within the fuel pump cavity.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: January 27, 2015
    Assignee: Walbro Engine Management, L.L.C.
    Inventors: Kevin L. Israelson, Douglas W. Salowitz, Jr., David L. Speirs
  • Patent number: 8915724
    Abstract: A scroll compressor includes an orbiting scroll member, a drive mechanism accommodation space, a rotary shaft, a drive bushing, an upstream space, a downstream space, a first communication passage and a second communication passage. The upstream space and the downstream space are formed in the drive mechanism accommodation space by a plain bearing, the drive bushing and an eccentric pin of the rotary shaft. The second communication passage passes through at least the drive bushing and allows the upstream space and the downstream space to communicate with each other. A control valve is disposed in the second communication passage. Centrifugal force of the control valve developed when the rotary shaft is rotated at a predetermined speed or higher causes the control valve to move in a direction in which the second communication passage is opened, thereby to allow the upstream space and the downstream space to communicate with each other.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: December 23, 2014
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Akihiro Nakashima, Shinichi Sato, Akio Saiki
  • Patent number: 8899942
    Abstract: A system and method for controlling the volume ratio of a compressor is provided. The system can use a port (88) or ports in a rotor cylinder to bypass vapor from the compression chamber to the discharge passage of the compressor. A control valve (90) can be used to open or close the port or ports to obtain different volume ratios in the compressor. The control valve (90) can be moved or adjusted by one or more valves that control a flow of fluid to the valve. A control algorithm can be used to control the one or more valves to move the control valve to obtain different volume ratios from the compressor. The control algorithm can control the one or more valves in response to operating parameters associated with the compressor.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: December 2, 2014
    Assignee: Johnson Controls Technology Company
    Inventors: William L. Kopko, Paul Nemit, Jr., Angela Marie Comstock
  • Publication number: 20140348669
    Abstract: A system includes a pump device for producing a mixture product, a casing having a concealed cavity for receiving the mixture product via the pump device; and a clutch unit operatively linked to the pump device for controllably maintaining an interior pressure of the concealed cavity at a predetermined threshold. Accordingly, the pump device is activated by the clutch unit for delivering the mixture product into the concealed cavity through an inlet of the casing until the interior pressure of the concealed cavity reaches the predetermined threshold and is deactivated by the clutch unit for stop delivering the mixture product into the concealed cavity when the interior pressure of the concealed cavity reaches the predetermined threshold.
    Type: Application
    Filed: August 5, 2014
    Publication date: November 27, 2014
    Inventor: Lingyu Dong
  • Patent number: 8888466
    Abstract: A compressor including a compression mechanism configured and positioned to receive vapor from an intake passage and provide compressed vapor to a discharge passage. An opening is positioned in the compression mechanism in fluid communication with the discharge passage. A valve has an aperture formed therein, the aperture configured and positioned in fluid communication with a passageway to provide a path for a pressurized vapor flow to a first chamber and a first piston without mixing with vapor in the discharge passage. A second chamber is in fluid communication with a second piston and the discharge passage, the first piston and the second piston of the valve configured to move together. First piston and second piston movement are controllable in response to predetermined conditions to maintain the magnitude of pressure of the compression mechanism immediately upstream of the opening at substantially the same pressure magnitude at the discharge passage.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: November 18, 2014
    Assignee: Johnson Controls Technology Company
    Inventor: Paul Nemit, Jr.
  • Patent number: 8840384
    Abstract: At least one bypass opening is formed in a base of a scroll member, and communicates with at least one compression chamber. The bypass opening communicates with a passage leading to a suction pressure chamber within a compressor shell. A valve includes an element electrically powered to move between a first position at which it blocks flow of refrigerant from the bypass port to the passage leading to the suction pressure chamber, and a second position at which it allows flow of refrigerant between the bypass port and the passage leading to the suction pressure chamber. A portion of the valve, which is electrically powered, is mounted outside of the compressor shell.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: September 23, 2014
    Assignee: Danfoss Scroll Technologies, LLC
    Inventors: Tapesh P. Patel, Gene Fields, Joe T. Hill, Tracy L. Milliff, Harshal Upadhye, Behzad Parastar, Ole Holst Christensen
  • Patent number: 8827659
    Abstract: In an oil supply apparatus, a valve body includes first and second radially protruding lands, and a small-diameter portion continuously connecting the first and second lands and having a diameter smaller than at least the outer diameter of the first and second lands. Rotational speeds of a rotor are set as first, second and third rotational ranges in the ascending order. In the first rotational range, work oil from a second discharge port is fed to a first oil passage via the small diameter portion. In the second rotational range, work oil from the second discharge port is fed to a return oil passage via the small diameter portion. In the third rotational range after the second oil passage is blocked relative to the return oil passage by the second land, work oil from the second discharge port is fed to the first oil passage.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: September 9, 2014
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Yoshito Uno
  • Patent number: 8801396
    Abstract: An oil pump system can include a housing defining a pocket for an oil pump, a cavity, and a pump outlet passage connecting the pocket to the cavity. Low and high pressure relief passages can be defined by the housing for selectively fluidly coupling the cavity to a pressure relief area. A pressure relief valve positioned in the cavity can comprise first and second ends, first and second internal bores, and a slot in communication with the first internal bore. A biasing member positioned in the second internal bore can biasing the valve to a first position. The valve can translate to a second position aligning the slot with the low pressure relief passage to selectively provide low pressure relief to the oil pump, and can translate to a third position aligning the slot with the high pressure relief passage to selectively provide high pressure relief to the oil pump.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: August 12, 2014
    Assignee: Chrysler Group LLC
    Inventor: Walter W. Sundquist
  • Patent number: 8801395
    Abstract: A twin screw compressor has a working chamber bypass that is used at start-up of the compressor. This system provides pressure relief by allowing oil or other fluid to pass through it. The bypass includes a fluid passage that extends from the working chamber to the discharge port with a one way valve disposed inside the passage.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: August 12, 2014
    Assignee: Gardner Denver, Inc.
    Inventor: Timothy Keene Heimonen
  • Patent number: 8794027
    Abstract: A compressor includes a casing, a screw rotor, a slide member with at least one economizer port, and a control unit controlling a position of the slide member along the axis of the screw rotor to position the at least one economizer port based on the rotating speed of the screw rotor to advance the timing of opening of the at least one economizer port. The controller controls the position of the slide member along the axis such that the slide member moves upstream toward a suction side of the compressor when the rotating speed of the screw rotor increases, and downstream toward a discharge side of the compressor when the rotating speed of the screw rotor decreases. A refrigerating apparatus includes the compressor, a condenser, a heat exchanger, an expansion unit, and an evaporator, sequentially connected, and has an economizer line.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: August 5, 2014
    Assignee: Daikin Industries, Ltd.
    Inventors: Nozomi Gotou, Harunori Miyamura, Hideyuki Gotou