Patents Examined by Michael Koczo
  • Patent number: 7244110
    Abstract: An electrically powered axial-flow fan has a hub to house the motor and support the fan blades. Small blades or vanes on the inside of the hub function as a radial-flow blower to draw cooling air through cooling ports on the electric motor housing. The vanes inside the hub cooperate with a flange surrounding the motor to form a low pressure chamber under the hub to improve cooling flow through the motor. This motor cooling air flow is then ejected into the exhaust stream of the axial-flow fan.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: July 17, 2007
    Assignee: Valeo Electrical Systems, Inc.
    Inventors: Tao Hong, John R. Savage
  • Patent number: 7244107
    Abstract: An oxygen-compression apparatus has a driving device, multiple rotating wheels, multiple driving rings, multiple rocking cylinders and multiple connecting hoses. The driving device has a driving shaft with a central axis. The rotating wheels are eccentrically attached on and rotated with the driving shaft and are located respectively at different angles relative to the central axis of the driving shaft. The driving rings are rotatably mounted respectively around the rotating wheels. The rocking cylinders are connected respectively to the driving rings and each has a housing and a piston rod. The piston rod has a first end extending into the inner space of the housing to form a compression chamber in the inner space and a second end pivotally connected to a corresponding one of the driving rings. The connecting hoses are connected between the compression chambers of adjacent rocking cylinders.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: July 17, 2007
    Assignee: Merits Health Products Co., Ltd.
    Inventor: Chen-Bong Cheng
  • Patent number: 7234304
    Abstract: A method and device for decoupling combustor attenuation and pressure fluctuation from turbine attenuation and pressure fluctuation in a gas turbine engine. The engine has: a compressor; a combustor; and a turbine, that generate a flow of hot gas from the combustor to the turbine. An aerodynamic trip is disposed in at least one of; a combustor wall; and an inner shroud of the nozzle guide vane ring, and is adapted to emit jets of compressed air from cross flow ports into the flow of hot gas from the combustor. The air jets from the cross flow ports increase turbulence and equalize temperature distribution in addition to decoupling the attenuation and pressure fluctuations between the combustor and the turbine.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: June 26, 2007
    Assignee: Pratt & Whitney Canada Corp
    Inventor: Hisham Alkabie
  • Patent number: 7232291
    Abstract: A variable capacity rotary compressor to reduce an electric power loss thereof and includes a drive unit to generate a rotating force, a rotating shaft connected to the drive unit to rotate thereby, and a compressing cylinder through which the rotating shaft passes. A compressing chamber is defined in the compressing cylinder to compress refrigerant therein, with a first refrigerant inlet port provided at the compressing chamber to introduce the refrigerant into the compressing chamber. A capacity control unit controls an operation of the rotary compressor, so that the rotary compressor performs one of a normal-mode operation wherein the first refrigerant inlet port is maintained at an open state thereof, and the variable capacity-mode operation wherein the first refrigerant inlet port is periodically opened and closed.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: June 19, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Young Choi, Jin Kyu Choi
  • Patent number: 7232293
    Abstract: A manual hydraulic pump includes a cylinder block 10 and an end block 8. The rear end of the cylinder block 10 and the end block 8 defines an end space 21 between them. The cylinder block 10 has cylinders 13 and oil passages 23. Each oil passage 23 extends between the rear end of one of the cylinders 13 and the end space 21. The end block 8 has a pair of cylindrical holes 27 opening into the end space 21. The end block 8 also has a pair of inlet/outlet ports 25 each communicating with the outside of the pump and one of the cylindrical holes 27. A distributing valve 22 is put in the end space 21 and spring-biased into compressive contact with the rear end of the cylinder block 10. The distributing valve 22 substantially takes the form of a disc and has a thickness smaller than the distance between the adjacent ends of the blocks 10 and 8. The distributing valve 22 has a pair of arcuate ports 22a formed on its front side.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: June 19, 2007
    Assignee: Marol Co., Ltd.
    Inventors: Katsuhiko Sasayama, Kenichi Shimada
  • Patent number: 7229257
    Abstract: A horizontal type compressor comprising: a differential pressure plate for dividing an inside of a casing into a high pressure chamber and a lower pressure chamber and thus maintaining an oil level of the high pressure chamber to be higher than that of the lower pressure chamber; and a lubricating unit for supplying oil stored in the high pressure chamber to each sliding part in the compressor and making the oil which finished a lubricating operation return to the high pressure chamber from the lower pressure chamber. The compressor smoothly supplies refrigerant oil and minimizes an amount of the refrigerant oil discharged outside the compressor, thereby prolonging a life of the compressor and increasing a reliability of the compressor. Also, the differential pressure plate and the muffler are integrally formed, thereby reducing a fabricating cost and reducing an assembling process.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: June 12, 2007
    Assignee: LG Electronics Inc.
    Inventors: Hyun-Jun Ko, Youn-Bong Han
  • Patent number: 7226275
    Abstract: A variable capacity rotary compressor including upper and lower compression chambers having different capacities, and a rotating shaft. Upper and lower eccentric cams are provided on the rotating shaft to be eccentric from the rotating shaft in a same direction. Upper and lower eccentric bushes are fitted over the upper and lower eccentric cams, respectively, to be eccentric from the rotating shaft in opposite directions, with a slot provided at a predetermined position between the upper and lower eccentric bushes. A locking pin functions to change a position of the upper or lower eccentric bush to a maximum eccentric position. The compressor further includes a friction unit to prevent the upper and lower eccentric bushes from slipping. The friction unit is installed at a predetermined portion of the upper eccentric cam, and applies a frictional force to the upper eccentric bush to offset a slip-rotating force of the upper eccentric bush.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: June 5, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moon Joo Lee, Seung Kap Lee, Chun Mo Sung
  • Patent number: 7220109
    Abstract: A compact opposed piston pump minimizes axial spacing between its pistons on the drive shaft and thereby reduces the shaking couple and noise from reciprocation. Each piston has its own eccentric element press-fit into the connecting rods so as not to occupy space between the pistons. The shaking couple can be further reduced for pistons of different masses by selecting the mass of the eccentrics to compensate for the difference in piston masses. The pump also includes an improved cylinder sealing arrangement having a circumferential groove in an angled surface at the end of the cylinder. The pump also has a special two piece cover and seal for closing the open neck of the pump crankcase and an improved multi-lobed valve stop. The pump further uses tubular transfer members for transferring intake and/or exhaust air into the crankcase and/or between valve heads.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: May 22, 2007
    Assignee: Thomas Industries, Inc.
    Inventor: Raymond J. Kultgen
  • Patent number: 7220108
    Abstract: A variable capacity rotary compressor including upper and lower compression chambers having different capacities, and a rotating shaft. Upper and lower eccentric cams are provided on the rotating shaft to be eccentric from the rotating shaft in a same direction. Upper and lower eccentric bushes are fitted over the upper and lower eccentric cams, respectively, to be eccentric from the rotating shaft in opposite directions, with a slot provided at a predetermined position between the upper and lower eccentric bushes. A locking pin functions to change a position of the upper or lower eccentric bush to a maximum eccentric position. A restraining unit is set along an edge of the slot to prevent the upper or lower eccentric bush from slipping. The restraining unit includes first and second elastic pieces which are respectively provided at positions adjacent to first and second ends of the slot.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: May 22, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Hea Cho, Seung Kap Lee, Chun Mo Sung
  • Patent number: 7217108
    Abstract: The hose pump comprises an eccentric drive with numerous eccentric discs (21) fastened to a shaft (20). Each eccentric disc (21) drives a crank drive (24) having a connecting rod (25). At the end of the connecting rod (25), a pump finger (11) is borne for compressing a pump hose (10). A sealing diaphragm (27) is disposed between the eccentric drive and the pump hose (10) for preventing liquid from intruding into the interior of the housing (16). The connecting rod (25) sealingly passes through the sealing diaphragm (27). The sealing diaphragm (27) comprises lateral folds (31) so that it does not exert any substantial forces upon the crank drive (24). The hose pump has a low power consumption and permits a small structure.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: May 15, 2007
    Assignee: B. Braun Melsungen AG
    Inventors: Dieter Herwig, Reinhard Knuth
  • Patent number: 7217103
    Abstract: A system for optimizing compressor output flow when a maximum power consumption limit exists and the compressor inlet pressure can vary. Utilizing the invention the maximum compressor output flow can be obtained even while the inlet pressure to the compressor varies.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: May 15, 2007
    Assignee: RIX Industries
    Inventor: John Below
  • Patent number: 7217104
    Abstract: A system for detecting a collection of liquid, notifying a person or thing that liquid has been detected and pumping the liquid. The system includes a control unit, at least one sensor and relay and a pump. Preferably, the system includes a first sensor that senses a collection of liquid which activates a relay which completes an electrical circuit to activate a notification means, such as a siren, light, telephone dialer or other notification device. Preferably, the system also includes a second sensor that senses an additional collection of liquid and thereby activates a second relay which completes an electrical circuit and delivers DC power to the pump which pumps the additional collection of liquid to its desired location. The control unit includes a transformer, relays and plugs to connect to an AC or DC power supply, typically a standard 110 volt AC, 15 amp power supply.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: May 15, 2007
    Inventor: Carl M. Ross
  • Patent number: 7217105
    Abstract: A pump apparatus is provided which comprises a first displacement pump and a ceramic valve construction formed of a ceramic rotor, a ceramic stator having flat surfaces which are positioned in sealing relationship and a second displacement pump having check valves. The first displacement pump comprises a reciprocating first piston within a housing having an interior wall spaced apart from the piston. The position of the first piston and the position of the rotor are controlled to effect desired fluid flow through the stator. The first piston and a second piston of the second displacement pump are reciprocated by a common motor.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: May 15, 2007
    Assignee: Sapphire Engineering, Inc.
    Inventor: Garret Angove
  • Patent number: 7214040
    Abstract: The invention relates to a cylinder head arrangement for a piston compressor, particularly for a hermetically enclosed refrigerant compressor, with a valve plate, a suction gas channel, a discharge chamber and a retainer element for a discharge valve. It is endeavoured to improve the efficiency of the piston compressor. For this purpose, it is ensured that the suction gas channel and the discharge chamber are arranged on different sides of the retainer element.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: May 8, 2007
    Assignee: Danfoss Compressors GmbH
    Inventors: Peter Froeslev, Frank Holm Iversen
  • Patent number: 7214038
    Abstract: A hose cartridge for a peristaltic pump comprises a cartridge housing provided with a lateral recess. The recess is delimited at least partially by an element having essentially the shape of a segment of a circle. A roller wheel of the peristaltic pump can engage that recess once the cartridge is attached to the peristaltic pump. The cartridge housing is provided with two support arms, and a groove extends from one of the support arm along three outer side faces of the cartridge housing to the other support arm. The ends of the support arms are provided each with a hose take-up member for retaining stoppers attached to a hose section. Such a hose cartridge is of very compact design ensures an easy handling.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: May 8, 2007
    Assignee: Ismatec SA
    Inventors: Daniel Saxer, René Fässler, Stephan Michels
  • Patent number: 7214036
    Abstract: A screw vacuum pump which allows reduced power, lower inside gas temperature, and reduced discharging time. The pump has a pair of screw rotors rotatively engaged with each other in a pump casing to discharge a gas along a longitudinal direction of the pump. Each rotor has three types of helical teeth serially located in a longitudinal direction of the rotor and different from each other in theoretical displacement volume. A bypass conduit communicating with a delivery side of the pump is connected via a first check valve to a first intermediate space defined between the first helical teeth and the second helical teeth and via a second check valve to a second intermediate space defined between the second helical teeth and the third helical teeth. The gas is compressed at the third stage to half the first stage volume before a discharge port opens.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: May 8, 2007
    Assignee: Taiko Kikai Industries Co., Ltd.
    Inventor: Masashi Yoshimura
  • Patent number: 7214039
    Abstract: A pump apparatus is provided which comprises a plurality of displacement pumps each connected to a check valve apparatus. The displacement pumps each comprises a reciprocating piston within a housing having an interior wall spaced apart from the piston. The check valve apparatus comprises two check valves that control fluid flow under pressure exerted by the reciprocating piston from a fluid reservoir to a point of use of the fluid. Pistons of the displacement pumps are driven by a common motor.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: May 8, 2007
    Assignee: Sapphire Engineering, Inc.
    Inventor: Garret Angove
  • Patent number: 7213406
    Abstract: A compressor assembly, including a compressor, at least one pipe having ends and an intermediate portion between the ends, the at least one pipe being connected to the compressor at the ends, and at least one support member for supporting the intermediate portion of the at least one pipe relative to the compressor.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: May 8, 2007
    Assignee: Carrier Corporation
    Inventors: Gerard Decourioux, Xavier Girod, Jean De Bernardi
  • Patent number: 7210911
    Abstract: A controller for a variable displacement compressor that maintains high displacement while preventing excessive increase in discharge pressure. The controller includes a pressure sensing mechanism for detecting pressure of a suction pressure region in the compressor. A suction pressure controlling means controls the displacement of the compressor so that the pressure detected by the pressure sensing mechanism is converged to a predetermined suction pressure setting. A sensor detects pressure of a discharge pressure region in the compressor. A discharge pressure controlling means controls the displacement of the compressor so that the pressure detected by the sensor is converged to a predetermined discharge pressure setting. When the pressure detected by the sensor is greater than a threshold pressure, an ECU switches the control of the compressor from control with the suction pressure controlling means to control with the discharge pressure controlling means.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: May 1, 2007
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masaki Ota, Masakazu Murase, Satoshi Umemura, Tatsuya Hirose
  • Patent number: 7207785
    Abstract: A vane pump is disclosed for use with gas turbine engines that is adapted and configured to provide a failure mode similar to that of a traditional gear pump. The vane pump includes a pump housing, a cam member, a cylindrical rotor member and a mechanism for communicating a high pressure fluid from the discharge arc region to the inlet arc region when the tip surface of each vane element has experienced a predetermined amounted of wear so as to prevent pump startup. The tip surface of each vane element wears as a result the sliding contact with the circumferential surface of the pumping cavity.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: April 24, 2007
    Assignee: Goodrich Pump & Engine Control Systems, Inc.
    Inventors: William H. Dalton, Kurt G. Grochowski