Motor Within Rotary Pumping Member Patents (Class 417/352)
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Patent number: 11547675Abstract: Systems and methods for delivering active ingredients, such as pharmaceutically active ingredients, to substrates are described herein. The active ingredients are delivered as fluids to a fluid-dispensing device for the creation of one or more drops for deposition onto substrates such as for the creation of microdoses. The invention further includes microdoses made by such processes.Type: GrantFiled: August 9, 2016Date of Patent: January 10, 2023Assignee: Purdue Research FoundationInventors: Arun V. Giridhar, Michael Harris, Gintaras V. Reklaitis, Lynne S. Taylor, Zoltan K. Nagy, Elcin Icten, Frederick Fiesser, Laura Hirshfield
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Patent number: 11274630Abstract: An exhaust nozzle for use with a gas turbine engine includes an outer shroud and a nozzle-plug assembly coupled to the outer shroud. The nozzle-plug assembly includes an inner plug and at least one support vane that is coupled to the outer shroud to support the inner plug in an exhaust nozzle flow path.Type: GrantFiled: February 27, 2020Date of Patent: March 15, 2022Assignees: Rolls-Royce North American Technologies Inc., Rolls-Royce CorporationInventors: David L. Sutterfield, Jack D. Petty, Bryan H. Lerg, Andrew Sanderson
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Patent number: 11255214Abstract: A compressor with negative coefficient of thermal expansion case material comprising a rotor having blades with tips, the case including an inner case comprising a negative coefficient of thermal expansion material, and a tip clearance located between the tips and the inner case; wherein the tip clearance is maintained responsive to a flow of air over the negative coefficient of thermal expansion material.Type: GrantFiled: November 4, 2019Date of Patent: February 22, 2022Assignee: Raytheon Technologies CorporationInventors: Dilip Prasad, Gavin Hendricks
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Patent number: 9771800Abstract: A rotary motor with a geared transmission which contains a stator which is procured with triangular cavities which are procured with rounded peaks from which into each is led in at least one canal for entry and exit of compressible medium where in each cavity is embedded a rotary piston with an elliptical crosscut in the way that its lengthwise axis which is parallel with an axis of a rotary element is displaced regarding to a lengthwise axis of the inner cavity of the stator to reach a planetary movement of the rotary piston where the mutual coupling of the rotary pistons with a driven mechanism is achieved by led out of following pins of the rotary pistons out of the cavities of the stator where they are procured with rotary cog wheels which are mutually coupled with the geared elliptical rotary element which is connected with the driven mechanism.Type: GrantFiled: May 11, 2015Date of Patent: September 26, 2017Inventor: Jirí Dvorák
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Patent number: 9556751Abstract: A scatter guard is interposed between a turbine inlet of a turbocharger and a downpipe and is a ring member that has a pair of opposing flanges, one flange being used to connect the ring to the turbocharger and the other flange being used to connect the ring to the down pipe, each connection being made via a band clamp. One or more spokes are located within the ring and are used to absorb an incoming escaped turbine either to outright stop the turbine or to shatter the turbine into numerous smaller and far less harmful pieces. The inside diameters at each end of the ring may be different to relative to one another in order to eliminate the need to use a step-down adapter whenever the diameter of the turbine inlet and the downpipe mismatch. Alternately, the scatter guard can be used in conjunction with the step-down adapter.Type: GrantFiled: December 6, 2012Date of Patent: January 31, 2017Inventors: Ron Wolverton, Christopher Bradly Posadas
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Publication number: 20140044571Abstract: An electric water pump may comprise an impeller rotated by a motor and a casing accommodating the impeller. The impeller may include a plurality of blades. The casing may include a first partial casing, a second partial casing and a tongue portion that extends along the rotation direction of the impeller. The tongue portion may include a first partial tongue portion. formed to be integrated with the first partial casing and a second partial tongue portion formed to be integrated with the second partial casing. A plurality of partial rear edges is disposed at a rear edge of the tongue portion in the rotation direction of the impeller. The plurality of partial rear edges may be positioned to be shifted from each other in the rotation direction of the impeller at a smaller interval than the interval of the blades.Type: ApplicationFiled: July 30, 2013Publication date: February 13, 2014Applicant: AISAN KOGYO KABUSHIKI KAISHAInventor: Takahiro Nakamura
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Publication number: 20140037469Abstract: A blower, especially combustion air blower for a vehicle heater, includes a blower housing (10) with a housing bottom (14) and with a circumferential wall (16) adjoining the housing bottom (14) and defining a housing interior space (20). A partition (18) divides the housing interior space (20) into a motor mounting space (22) and a sound insulation space (24).Type: ApplicationFiled: July 31, 2013Publication date: February 6, 2014Applicant: Eberspacher Climate Control Systems GmbH & Co. KGInventor: Michael HUMBURG
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Publication number: 20130280110Abstract: An electric machine has in a machine housing, a stator and a rotor which is arranged on a motor shaft which is supported on a non-drive side in a bearing unit which has a ball bearing arrangement and is arranged within the machine housing in a radially elastic and axially displaceable manner. The electric machine is preferably coupled on the drive side without a bearing via a rigid shaft coupling to a work machine, in particular to a hydraulic pump.Type: ApplicationFiled: June 17, 2013Publication date: October 24, 2013Inventors: FRANK GUTJAHR, PETER LEMKE
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Publication number: 20130036762Abstract: A scroll type device for operating on a fluid provided thereto that includes, as a unit, a housing with two interleaved scroll plates that are installed within such housing and that are operably movable relative to one another in an eccentric orbit, with such scroll plates including interleaved spiral projections, spiral projections include first and second portions, which portions will operate for expansion and the other of which portion will operate for compression as the unit operates in a given normal direction of movement.Type: ApplicationFiled: July 30, 2012Publication date: February 14, 2013Inventors: Robert W. Shaffer, Bryce R. Shaffer
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Patent number: 8297945Abstract: In an axial fan (1), equipped with a frame (13), a motor (2) and an impeller (3) whose hub (15) is rotationally driven by the motor (2) and where the hub (15) is cup-shaped, with an end wall (16) and an annular side wall (17) to partially contain the motor (2), the motor (2) protrudes from the hub (15) with its longitudinal end (23) which is supported and laterally surrounded by a crown (12) of the frame (13) and the crown (12) has an annular end strip (21) facing the hub (15) and laterally surrounding an annular end strip (22) of the hub (15) which faces the crown (12).Type: GrantFiled: June 28, 2007Date of Patent: October 30, 2012Assignee: SPAL Automotive S.R.L.Inventor: Alessandro Spaggiari
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Publication number: 20120201704Abstract: A centrifugal fan assembly has a fan with a number of vanes at a peripheral edge of a rotor, a motor, arranged coaxially to the inside of the rotor, that rotates the fan, and a casing that houses the fan and the motor. The casing has an air inlet in the direction of a rotating shaft of the fan, and an air outlet in a radial direction. A first part of the casing near the air inlet is arranged relatively towards a center of the casing as compared to the other part of the casing. The motor is mounted on the first part.Type: ApplicationFiled: April 16, 2012Publication date: August 9, 2012Applicant: FUJITSU LIMITEDInventors: Michimasa AOKI, Masumi Suzuki, Tadanobu Matsumura
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Publication number: 20100316509Abstract: A miniature fan includes a housing having a mounting portion with a shaft seat. A base is mounted to the mounting portion of the housing. The base includes first and second faces spaced along an axis. An outer layer is provided on the first face of the base. A bottom layer is provided on the second face of the base. The base further includes a coil unit intermediate the outer layer and the bottom layer. The coil unit is electrically connected to a drive circuit. An impeller includes a shaft and a permanent magnet. The shaft is coupled to the shaft seat of the housing and rotatable about the axis. The permanent magnet is aligned with the coil unit. The axial height of the miniature fan is reduced, and the structure of the miniature fan is simplified.Type: ApplicationFiled: June 15, 2009Publication date: December 16, 2010Inventors: Alex Horng, Tso-Kuo Yin, Tsung-Hsin Cheng
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Publication number: 20100316508Abstract: A heat-dissipating fan includes a shaft seat. A coil base is coupled to the shaft seat. The coil base includes a base portion and a coil unit coupled to the base portion. The base portion includes a connection port electrically connected to the coil unit. The connection port is connected to a drive circuit. An impeller includes a hub and a permanent magnet. A shaft is coupled to the hub and rotatably coupled to the shaft seat about an axis. The permanent magnet is coupled to the hub and aligned with the coil unit. Since the coil base does not include electronic elements of the drive circuit, the axial height of the heat-dissipating fan is reduced, and the structure of the heat-dissipating fan is simplified.Type: ApplicationFiled: June 15, 2009Publication date: December 16, 2010Inventor: Alex Horng
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Publication number: 20100310390Abstract: A fan includes a frame, a rotor, a stator, a printed circuit board (PCB), and a water-proof structure. The frame includes a base, a first opening, and a second opening corresponding to the first opening. The base is located at the center of the frame near the second opening. The stator is disposed on the base of the frame. The rotor is disposed in the frame and coupled to the stator. The water-proof structure includes a protection cover and a seal ring. The protection cover is connected with the base, and the PCB is disposed in a closed space formed by the protection cover and the base. The protection cover has an annular wall and the seal ring is disposed around the outer surface of the annular wall of the protection cover.Type: ApplicationFiled: November 12, 2009Publication date: December 9, 2010Inventors: Shih-Hsuan HUANG, Chia-Ching Lin
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Publication number: 20100303647Abstract: A centrifugal fan includes a housing including a base, a side wall portion having an air outlet defined therein, and a cover arranged above the side wall portion and having an air inlet defined therein. A circuit board is arranged on an upper surface of the base, and includes a circuit board protruding portion arranged to protrude radially outward of the housing. At least one of electronic components to be mounted on the circuit board is arranged radially outward from an inner circumferential surface of the side wall portion.Type: ApplicationFiled: May 4, 2010Publication date: December 2, 2010Applicant: NIDEC CORPORATIONInventors: Kiyoto IDA, Masashi HIRAYAMA, Hiroyoshi TESHIMA
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Publication number: 20100254826Abstract: The invention relates to a radial blower, with at least one axial air inlet port (1) and with a radial air outlet port (2), consisting of a housing subassembly and of a fan subassembly which comprises an electric motor (3) and a fan wheel (4), the housing subassembly having at least one holding part (5), which is arranged in the region of the axial air inlet port (1) and serves for the supporting reception of a carrying part (6) of a fan subassembly, and two shell parts (71, 72) which are connectable releasably to one another and divide the air inlet port (1) and between which the holding part (5) is fastened in the assembly state. In order to improve the mass/power ratio of a blower of this type, it is proposed that the electric motor (3) of the fan subassembly be an electronically commutated direct current motor.Type: ApplicationFiled: March 25, 2010Publication date: October 7, 2010Inventors: Gunter Streng, Rainer Müller
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Publication number: 20100111722Abstract: The invention relates to a rotor pump having an internally toothed outer ring and an externally toothed inner ring which is mounted therein and intermeshes therewith, wherein the outer ring and the inner ring are arranged axis-parallel to one another, and the axes of the outer ring and of the inner ring are at a distance from one another, and the outer ring is connected to a hollow shaft motor with a stator which is fitted with windings, and to a rotor which is rotatably mounted therein, characterized in that the outer ring forms the rotor of the hollow shaft motor.Type: ApplicationFiled: January 6, 2010Publication date: May 6, 2010Applicant: Joma-Polytec Kunststofftechnik GmbHInventors: Willi Schneider, Torsten Helle
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Publication number: 20100098560Abstract: A miniature heat-dissipating fan includes a stator and a rotor. The stator has a first leakage flux absorber, a coil layer arranged on the first leakage flux absorber, and a hole. The coil layer has a plurality of coils and the hole passes through the first leakage flux absorber and the coil layer. The rotor has an impeller, a second leakage flux absorber and a permanent magnet. The second leakage flux absorber and the permanent magnet are attached to a bottom of the impeller, such that the rotor is rotatably coupled to the stator. Consequently, magnetic flux leakage under the stator is prevented to assure that electromagnetic interference will never be caused, and an overall axial thickness of the miniature heat-dissipating fan is reduced by the configuration of the stator.Type: ApplicationFiled: November 17, 2008Publication date: April 22, 2010Inventors: Alex HORNG, Tso-Kuo YIN
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Publication number: 20100068081Abstract: In an axial fan (1), equipped with a frame (13), a motor (2) and an impeller (3) whose hub (15) is rotationally driven by the motor (2) and where the hub (15) is cup-shaped, with an end wall (16) and an annular side wall (17) to partially contain the motor (2), the motor (2) protrudes from the hub (15) with its longitudinal end (23) which is supported and laterally surrounded by a crown (12) of the frame (13) and the crown (12) has an annular end strip (21) facing the hub (15) and laterally surrounding an annular end strip (22) of the hub (15) which faces the crown (12).Type: ApplicationFiled: June 28, 2007Publication date: March 18, 2010Applicant: SPAL AUTOMOTIVE S.r.I.Inventor: Alessandro Spaggiari
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Publication number: 20090134740Abstract: A motor including a stator provided with a claw pole; and a rotor having a magnet confronting the stator; wherein the claw pole is magnetically asymmetrical.Type: ApplicationFiled: November 21, 2008Publication date: May 28, 2009Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Kyouichi Okada
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Publication number: 20090091279Abstract: The invention provides a control unit for at least one electric motor, wherein the control unit performs open-loop or closed-loop control of the motor speed of the electric motor in such a way that in the case of control values in specific ranges which are typical of a fault when the setpoint value is being predefined, such a fault being, for example, a line break, a voltage failure or a short circuit, the control unit drives the motor with a predefined setpoint value which differs from the current control value.Type: ApplicationFiled: May 3, 2007Publication date: April 9, 2009Inventor: Andras Lelkes
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Publication number: 20090074594Abstract: A compact arrangement features a fan (42?), a fluid pump (134), and an electric drive motor (106). The latter has a stator (22) having a stator winding (118) that is configured to generate a rotating field. The stator (22) has associated with it a permanent-magnet external rotor (106) for driving the fan (42?), and a permanent-magnet internal rotor (140) for driving the fluid pump (134). The stator winding (118) thus drives not only the rotor (106) of the drive motor and hence the fan (42?), but also the internal rotor (140) and hence the fluid pump (134). The arrangement is very well suited for combination with a fluid cooler (90).Type: ApplicationFiled: September 6, 2005Publication date: March 19, 2009Inventor: Gunther Strasser
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Publication number: 20090066178Abstract: This invention discloses an electric motor apparatus including a frame, a stator and a rotor in the frame, an axle sleeve at the center of the stator and having an embedded groove extended inwardly and at a free end apart from the connecting position of the frame, a bearing sheathed into the axle sleeve, an axle at the center of the rotor and sheathed into the bearing, a latch at an internal side of the rotor and protruded outward for securing the stator and the rotor, and a ball embedded in the bearing and apart from the free end. By the embedded groove and latch, the stator and rotor are combined, and the axle is pressed against the ball. When the axle is rotated, the ball is driven to roll to reduce the friction, noises and wearing as well as enhancing the life expectancy and efficiency of the electric motor.Type: ApplicationFiled: November 20, 2008Publication date: March 12, 2009Applicant: TEK-CHAIN TECHNOLOGY CO., LTDInventor: Chun-Ju Lin
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Patent number: 7473075Abstract: A liquid pump (100) includes a top cover (40), a back plate (50), and a spacing member (60). The spacing member is sandwiched between the top cover and the back plate, thereby dividing an interior of the liquid pump into a fluid chamber (14) and a receiving cavity (16) isolated and hermetical from the fluid chamber. The fluid chamber is disposed between the top cover and the spacing member for receiving therein a fluid dynamic bearing (70) and a rotor (20) which drives working fluid to enter and leave the liquid pump. The receiving cavity is disposed between the spacing member and the back plate for receiving therein a stator (30) which drives the rotor to rotate in respective to the bearing.Type: GrantFiled: March 8, 2006Date of Patent: January 6, 2009Assignee: Foxconn Technology Co., Ltd.Inventors: Ching-Hsing Huang, Wun-Chang Shih, Chien-Long Hong, Huan-Chao Lin, Wei-Ben Wang, Fong-Tan Yu, Hsien-Sheng Pei
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Publication number: 20080239665Abstract: A cooling fan module comprising a module housing and a fan assembly. The fan assembly comprises a blade assembly coupled to a motor disposed within a fan housing that is disposed within the module housing. The fan housing has an inlet and an outlet that is disposed within the module housing. A fan control circuit board is disposed within the module housing and outside of the fan housing. The fan control circuit board is coupled to the motor. An electrical connector is coupled to the fan control circuit board and projects outside of the module housing.Type: ApplicationFiled: August 4, 2006Publication date: October 2, 2008Inventors: John P. Franz, Troy A. Della Fiora, Joseph R. Allen, Wade D. Vinson
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Publication number: 20080232961Abstract: A fan frame of a fan includes a main body, a base and at least one connecting element. The main body has at least one mounting portion and at least one auxiliary passage, which are not communicated with each other. A main passage is disposed in the main body, and the auxiliary passage is obliquely communicated with the main passage from the upper part of the main body. The base is disposed in the central portion of the main body. The connecting element is disposed between the main body and the base. A fan including such fan frame is also disclosed.Type: ApplicationFiled: January 31, 2008Publication date: September 25, 2008Inventors: Cheng-Hung Lin, Chao-Wen Lu
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Publication number: 20080226472Abstract: The air blower includes a case body having an air suction mouth formed at least one side surface thereof and an outlet formed at a peripheral wall thereof; a motor which is installed into the case body, having a fluid dynamic bearing; and an impeller which is fixed to a rotation member of the motor in order to locate at an outer circumferential part of the motor, suctioning air from the air suction mouth by rotating and discharging from the outlet. Therefore, it can rotate at a high speed, blow in under high pressure at large air volume even though it is small size and is economical and long-lived.Type: ApplicationFiled: June 23, 2005Publication date: September 18, 2008Inventors: Takashi Kanai, Hiroki Matsushita
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Patent number: 7371056Abstract: A fluid pump includes a case including a pump chamber, a reserve tank for storing spare liquid and located in the case but outside the pump chamber and formed so that a space independent of the pump chamber is defined by the reserve tank, a fluid path forming member arranged inside the reserve tank and including a discharge path communicating between a discharge port and the pump chamber, and a communication hole which is formed in a side of the fluid path forming member so as to assume such a position that the communication hole faces an inside of the reserve tank so that the hole communicates between the discharge path and the inside of the reserve tank, the communication hole being sized so that air in the pump chamber is allowed to flow through the hole into the reserve tank.Type: GrantFiled: March 30, 2005Date of Patent: May 13, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Kenichi Ito, Katsuya Seko, Kentaro Tomioka, Tomonao Takamatsu, Fumihide Nagashima, Takahiro Kojima
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Publication number: 20080022552Abstract: A blower wheel for a clothes dryer has a plurality of radial fan blades and a hub having a central opening surrounding a center axis of the blower wheel. A first wall portion extends outwardly from the hub adjacent the central opening to at least partially surround the center axis. An electric motor has a shaft with a threaded shaft end portion extending through the central opening and the at least one first wall portion. The threaded shaft end portion has threads arranged in a predetermined orientation. A nut is held within the at least one first wall portion and secured to the threaded shaft end portion whereby the blower wheel rotates with rotation of the shaft.Type: ApplicationFiled: June 29, 2007Publication date: January 31, 2008Applicant: MABE CANADA Inc.Inventor: Francis Forget
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Patent number: 7211915Abstract: A motor assembly comprises a plurality of redundant bearings, a plurality of coaxial support elements, with at least one of the support elements rotatable about an axis of rotation, and an armature rotatably guided by the plurality of support elements to rotate about the axis of rotation. The bearings provide redundancy to continue armature rotation in the event one bearing fails.Type: GrantFiled: October 15, 2003Date of Patent: May 1, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: Clint Edward Conrady, Ronald Paul Dean
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Patent number: 6896476Abstract: A fan includes a casing having a bottom wall and a shaft mounted inside the casing for rotatably supporting a rotary blade assembly comprised of blades inside the casing and above the bottom wall with the blade assembly being axially movable with respect to the shaft. A levitation device includes magnets mounted to the blades of the blade assembly and a magnetic field generator mounted in the bottom wall and opposing the magnets of the blades. The magnet field generator is controlled by a control circuit to selectively generate a magnetic field that interacts with the magnets of the blades to induce expelling force acting upon the blade assembly to axially move the blade assembly a predetermined distance away from the bottom wall. The magnitude of the expelling force can be changed by controlling the magnetic field generator whereby the distance between the blades and the bottom wall can be adjusted.Type: GrantFiled: September 23, 2003Date of Patent: May 24, 2005Assignees: Averatec Inc., Averatec Europe GmbH, Averatec Asia IncorporationInventor: Tsung-Yung Hung
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Patent number: 6846168Abstract: A pump includes an impeller, a stator, and a plurality of magnets forming bearing poles coupled to a selected one of the stator or the impeller. The pump further includes a plurality of shorted coils coupled to the other of the stator and the impeller. The plurality of bearing poles and shorted coils co-operate to form an electrodynamic bearing during rotation of the impeller. The electrodynamic bearing supports the impeller either axially or radially during operation of the pump. Hydrodynamic bearing surfaces are provided for generating a hydrodynamic bearing between the impeller and stator. The plurality of magnets may comprise a plurality of distinct magnetic elements or a single element comprising a plurality of distinct magnetic domains. The plurality of distinct magnetic elements or domains may be arranged to form a Halbach array.Type: GrantFiled: November 3, 2003Date of Patent: January 25, 2005Inventors: William D. Davis, David M. Lancisi
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Patent number: 6719534Abstract: In a flat-type blower unit disposed in a narrow space between a bottom portion of a front seat and a vehicle floor in a vertical direction, a motor-attachment bracket part for attaching a fan motor is integrally formed with a drive circuit cover part for covering a motor drive circuit to construct a motor attachment bracket having heat-generating components which generate heat when being operated. The motor attachment bracket is disposed to protrude radial outside from the fan motor, so that a dimension of the motor attachment bracket in the vertical direction can be reduced.Type: GrantFiled: April 9, 2002Date of Patent: April 13, 2004Assignee: Denso CorporationInventor: Shinji Aoki
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Patent number: 6641378Abstract: A pump includes an impeller, a stator, and a plurality of permanent magnets forming bearing poles coupled to a selected one of the stator or the impeller. The pump further includes a plurality of shorted coils coupled to the other of the stator and the impeller. The plurality of bearing poles and shorted coils co-operate to form an electrodynamic bearing during rotation of the impeller. The electrodynamic bearing supports the impeller either axially or radially during operation of the pump. Currents induced into each coil by a single bearing pole or by a plurality of bearing poles substantially simultaneously produce an electrodynamically generated magnetic field that repels the inducing bearing pole(s) when the impeller is rotating.Type: GrantFiled: November 13, 2001Date of Patent: November 4, 2003Inventors: William D. Davis, David M. Lancisi
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Patent number: 6591873Abstract: An aspirator assembly for enabling rapid inflation of evacuation slides and life rafts is configured for direct attachment to the inflatable article. The aspirator assembly comprises an open-ended body housing, a nozzle arrangement for introducing a pressurized fluid into the aspirator and toward a pair of counter-rotating impeller arrangements. The counter-rotating impeller arrangements allow for minimizing the internal forces to enable the stable mounting of the aspirator to the inflatable article without causing damage to the article material during operation.Type: GrantFiled: November 21, 2001Date of Patent: July 15, 2003Assignee: Air Cruisers CompanyInventor: Daniel A. McNeil
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Patent number: 6514053Abstract: A motor-driven pump with a plurality of impellers, includes a pump housing provided on an electric motor, and an impeller unit provided in an inner space of the housing, the housing having two fluid inlet port regions on two sides near and away from the motor in a longitudinal direction of an output shaft of the motor, and having one fluid discharge port region between the inlet port regions, and the unit including a pair of impellers having a partition wall fixed to the output shaft, directing to the discharge port region, and partitioning the inner space into two portions near and away from the motor, and a pair of blade groups provided on both sides of the partition wall.Type: GrantFiled: February 6, 2001Date of Patent: February 4, 2003Assignee: Toshiba Tec Kabushiki KaishaInventors: Toshiyasu Takura, Yoshifumi Tanabe
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Patent number: 6488485Abstract: Cooling fan with a fan wheel equipped with blades and an electric motor that has a stator and a rotor that is supported in a rotationally fixed manner on a driven shaft. For a purpose of a cost-saving and compact design of the cooling fan with low fan noise, the rotor is embodied as an external rotor with a bell-shaped pole housing encompassing the stator. The fan wheel is rotationally fixed in relation to the pole housing so that the fan wheel axially encompasses the pole housing at least partially and contacts the outer circumference of the pole housing at a number of points.Type: GrantFiled: December 28, 1999Date of Patent: December 3, 2002Assignee: Robert Bosch GmbHInventors: Bernhard Rupp, Gerd Knoepfel
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Patent number: 6457953Abstract: An axial flow fan for cooling electronic components comprising a plurality of blades for cooling electronic components wherein the blades comprise a plurality of specially designed airfoil sections, each section having along substantially the entire length thereof, a cross-sectional shape characterized by a maximum thickness located substantially constantly between about 16% chord to about 23% chord and a maximum camber located substantially constantly between about 40% chord to about 51% chord. The circuitry, housing, and blades are designed so that the axial width of the axial fan is decreased while maintaining performance parameters and design constraints.Type: GrantFiled: July 24, 2000Date of Patent: October 1, 2002Assignee: NMB (USA) Inc.Inventors: Phillip James Bradbury, Phep Xuan Nguyen, Chalmers R. Jenkins, Jr.
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Publication number: 20020122731Abstract: A monodirectional impeller for centrifugal electric pumps having a permanent-magnet synchronous motor, having vanes which are deformable at least along part of their extension so as to change their curvature, when loaded, in one direction of rotation, so that the power required for rotation in that direction is greater than the maximum power that can be delivered by the motor.Type: ApplicationFiled: February 25, 2002Publication date: September 5, 2002Inventor: Elio Marioni
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Patent number: 6439855Abstract: A motor and fan structure 10 includes direct current motor assembly 18 having a stator assembly 20 including a flux plate 22 and permanent magnet structure 24 mounted on the flux plate 22. The flux plate 22 defines one end of the motor assembly and define a magnetic flux path of the motor assembly. The motor assembly also includes a generally cylindrical armature assembly 32 defining another end of the motor assembly. The armature assembly is radially wound with windings 40, and an outermost part of the armature assembly and at least a portion of the windings is exposed to the environment. The structure includes a fan 12 having a generally cylindrical hub 14 receiving and covering the outermost part and the portion of the windings of the armature assembly. The hub 14 has a plurality of blades 16 extending therefrom. Thus, the weight and axial length of the motor assembly can be reduced since no case is required to cover the armature assembly yet the armature assembly is protected by the fan hub.Type: GrantFiled: February 12, 2001Date of Patent: August 27, 2002Assignee: Siemens Automotive, Inc.Inventors: Andrew Lakerdas, Andrew Paul Smith, Martin Volkening
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Patent number: 6428288Abstract: An air pump assembly (10) is provided which has a through flow type air-driving device (12) supported on an apertured partition wall (18) with the air-driving device (12) at one side and the motor (50) at the opposite side. The wall (18) is sandwiched between opposed pump and motor housings (14and 16) providing complementary ducts (27and 28) which communicate with opposed end caps (25 and 26) mounted on the end walls (21 and 22) of the pump and motor housings (14 and 16). The pump housing end wall (21) is apertured for air flow into the air-driving device (12) from the end cap (25) and its side wall supports an air outlet connection (13). A circuitous inlet passage to the air-driving device (12) is formed through end cap (26), ducts (27 and 28) and end cap (25). A circuitous outlet passage is formed from the air-driving device (12) through the motor housing (16), apertured partition wall (18) and motor housing (16).Type: GrantFiled: March 12, 2001Date of Patent: August 6, 2002Inventor: Peter J. King
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Publication number: 20020085935Abstract: A dual-effect heat dissipating fan comprising an axial flow fan and an eccentric fan is disclosed. The top of the eccentric fan is a dome. The upper end of blades of the eccentric flow fan are aligned with the blade at the lower end in the same axial line so that the two are overlapped and thus. The airflow guided therein will concentrate in this area and then is blown out in an eccentric way; and therefore, the efficiency of heat dissipating is improved.Type: ApplicationFiled: December 28, 2000Publication date: July 4, 2002Inventor: Wen-Hao Chuang
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Patent number: 6368075Abstract: A tube pump in which the rotor is axially supported by permanent magnets at each end, so arranged as to apply attractive force across the gap between the rotor and a stator such that permanent magnets provide the sole radial support for the rotor. The axially effective permanent magnets are provided in conjunction with an electromagnetic stabilizer restoring the axial position of the rotor upon a shaft toward one or the other of the opposite ends thereof.Type: GrantFiled: April 20, 2000Date of Patent: April 9, 2002Assignee: Forschungszentrum Julich GmbHInventor: Johan K. Fremerey
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Patent number: 6264440Abstract: In accordance with a preferred embodiment of the invention, a centrifugal pump includes a housing having a housing cavity, an inlet, and an outlet. A shaft is located in the housing cavity. A radial bearing coaxially surrounds the shaft. The shaft and the radial bearing are rotatable with respect to one another. The impeller includes an impeller hub within an opening and an impeller recess for receiving the radial bearing. A thrust balancing valve is associated with the impeller hub to define a variable orifice for fluidic communication with the inlet. A wall for containing the pumped fluid has an interior surface with different elevations for inhibiting rotational flow and reducing angular velocity of the fluid. The interior surface is disposed adjacent to a rear portion of the impeller.Type: GrantFiled: October 28, 1999Date of Patent: July 24, 2001Assignee: Innovative Mag-Drive, L.L.C.Inventors: Manfred P. Klein, Jeffrey S. Brown, Scott A. McAloon, Peter E. Phelps
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Patent number: 6034465Abstract: A pump including a pump casing having an inlet and an outlet, and an impeller having a rotary axis and being rotatably mounted within the pump casing for rotation about the rotary axis is provided. The impeller is configured and positioned relative to the pump casing so that the rotation of the impeller is effective to urge fluid from the inlet to flow through the outlet. A rotor assembly, coupled to and rotatable with the impeller, is provided with a plurality of permanent magnetic poles which are arranged in a generally flat array. A stator assembly is spaced apart from and generally facing the generally flat array of magnetic poles and includes a stator and a plurality of magnetic windings positioned and adapted to effect rotation of the rotor and the impeller upon energization thereof. A bulkhead is positioned between the rotor and the stator. The bulkhead includes a centrally located mounting feature.Type: GrantFiled: July 30, 1998Date of Patent: March 7, 2000Assignee: Shurfle Pump Manufacturing Co.Inventors: Gary F. McKee, Mike Saveliev, David J. Cooper
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Patent number: 5686772Abstract: The bearing has a fixed portion, and a moving portion, and includes a passive magnetic abutment composed of a fixed element secured to said fixed portion, and of a moving element secured to said moving portion. The bearing further including a passive magnetic centering bearing which is coaxial with said passive abutment, and which is composed of a fixed element secured to the fixed portion, and of a moving element secured to the moving portion, the passive abutment externally surrounding the passive centering bearing, the passive abutment having axial stiffness k.sub.ab, radial stiffness k.sub.rb, a mean radius R.sub.mb, and an inside radius R.sub.ib, and said passive centering bearing having axial stiffness k.sub.ac, radial stiffness k.sub.rc, a mean radius R.sub.mc, and an outside radius R.sub.Type: GrantFiled: January 18, 1995Date of Patent: November 11, 1997Assignee: Alcatel CitInventors: Jerome Delamare, Jean-Paul Yonnet, Elisabeth Rulliere
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Patent number: 5187938Abstract: In a method and a device for precooling the helium tank of a cryostat, in particular one for accommodating a superconductive magnet coil, contamination of the helium tank is avoided by the fact that helium gas is cooled down to the temperature of boiling nitrogen in a closed circuit, the helium gas is then circulated through the helium tank and thereafter cooled down again to the temperature of boiling nitrogen. The helium tank is cooled by means of the helium gas, which has a temperature of 77 K, until the tank has reached that temperature. The interior of the helium tank getting into contact exclusively with helium, the helium tank can be filled with liquid helium immediately after it has reached the precooling temperature, without the need to clean the tank first.Type: GrantFiled: May 15, 1990Date of Patent: February 23, 1993Assignee: Spectrospin AGInventors: Beat Mraz, Christoph Notzli, Ernst Ungricht, Daniel Marek
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Patent number: 5135363Abstract: An axial flow fan for ventilating electrical and electronic equipment includes a brushless, DC external rotor-type central drive motor. The stator is supported by a bearing tube formed of plastic, integrally molded with a mounting flange. In one embodiment, the fan casing forms part of the integral plastic molding.Type: GrantFiled: July 2, 1991Date of Patent: August 4, 1992Assignee: Papst-Motoren GmbH & Co. KGInventors: Siegfried Harmsen, Rolf Muller, Gunter Wrobel
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Patent number: 4639202Abstract: Apparatus responsive to fluid pressures and capable of providing fluid under pressure to provide a unit which may selectively be used as a fluid motor or a fluid driven motor pump unit depending upon fluid directing and control structures and with minimal modifications to achieve the various desired functions. The unit consists of a pair of radially arranged units which units are known in the art as gerotors and which therefore includes a shaft for mounting or driving a first gear rotor of a first size, a rotor ring which is provided for both orbital and rotational movement with respect to the first gear rotor and with respect to a stationary ring gear surrounding the rotor ring. Valving plates including stationary and moving plates are provided to control fluid flow either between chambers formed by the various gear members and rotor ring for parallel flow when the unit is operating as a motor or individual chamber flow when the unit is operated as a motor pump.Type: GrantFiled: February 6, 1985Date of Patent: January 27, 1987Inventors: Joseph W. Mahanay, Lester D. Savage
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Patent number: 4609332Abstract: A turbo-molecular pump characterized in that three out of five degrees of freedom except the rotation around the rotational axis of a shaft are actively controlled constrainingly by a pair of magnetic radius direction bearings and a pair of magnetic axial bearings, a bell-shaped rotor provided to cover the whole of magnetic bearing and a shaft which is supported by a magnetic bearing passively constraining the remaining two degrees of freedom, and said rotor is rotated at high speed by an inner-rotor type of a driving motor provided between a radius direction bearing and axial bearing.Type: GrantFiled: November 18, 1983Date of Patent: September 2, 1986Assignee: Seiko Seiki Kabushiki KaishaInventors: Masaharu Miki, Chiaki Urano