Deformable, Resilient Or Resiliently Biased Patents (Class 415/156)
  • Patent number: 9863423
    Abstract: A conical impeller with a hub that has a conical surface extending into the interior of the impeller. The hub has spiral, slanting arms which are attached or integrally formed with a plurality of curved blades. The blades can be connected at the bottom by a ring. The intersection of the conical surface of the hub with the blade forms an upward path for fluids and their entrained particles or gases which have been brought into the interior of the impeller to effectively completely be ejected. The discharge edges of the blades and/or the conical surface of the hub may have openings for discharging gas into the fluid. The impeller imparts low shear to the fluid and its components, and the shear is independent or only depends slightly on the size of the impeller. The impeller minimizes or eliminates particle agglomeration and fouling of the impeller. The efficiency of and flow pattern produced by the impeller means that containers don't require the use of baffles.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: January 9, 2018
    Assignee: Enevor Inc.
    Inventor: Carl Roy Bachellier
  • Patent number: 9840934
    Abstract: A turbomachinery vane includes a vane body defining a longitudinal axis, a trunnion extending from the vane body and defining a pivot point for pivoting the vane body about the longitudinal axis, and a lock system operatively connected to the trunnion and configured to lock the vane body in a plurality of locked positions. A gas turbine engine includes a turbomachinery component including a row of actuated stators, wherein the actuated stator row includes a plurality of the turbomachinery vanes. A method of actuating a vane by aerodynamic loads includes moving the vane about a pivot point from a first position to a second position by a first set of by aerodynamic loads.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: December 12, 2017
    Inventor: Joseph T. Christians
  • Patent number: 9789636
    Abstract: Airfoils (12) are molded of material (28), such as silicon rubber, which is fluent during molding, becoming solid and compliant at temperatures of use, with rigidly fixed vanes (25) and rotatable vanes (26), as inserts which are co-molded within the airfoil. The inserts are pre-prepared of either stiff or semi-stiff material to suit the intended needs of the airfoil. Then, with inserts in place within a mold, the airfoil is molded of compliant material. At least one of the inserts (26) is rotatable so as to force at least some portion of the compliant airfoil to alter camber, the compliant material between the inserts smoothing out the surface of the airfoil. The airfoils thus molded are then inserted between the inner hub (18) and the outer ring (22) of the rotary machine in which a fan or compressor is being constructed. Rods of the movable vanes extend to a unison ring connected (32) to rotate the vanes.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: October 17, 2017
    Assignee: United Technologies Corporation
    Inventor: Michael C Firnhaber
  • Patent number: 9163524
    Abstract: According to an aspect of the invention, there is provided a variable geometry turbine comprising: a turbine wheel mounted for rotation about a turbine axis within a housing, the housing defining an annular inlet surrounding the turbine wheel and defined between first and second inlet sidewalls; and a cylindrical sleeve axially movable across the annular inlet to vary the size of a gas flow path through the annular inlet, the annular inlet being divided into at least two axially offset inlet portions; and a ring-like seal adjacent a free end of the sleeve, at least a part of the ring-like seal being located in-between the sleeve and the inlet portions, or a structure defining the inlet portions.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: October 20, 2015
    Assignee: Cummins Ltd.
    Inventors: Simon Moore, James Alexander McEwen, Ian Higgins, Matthew William Edwards
  • Patent number: 8944755
    Abstract: A variable throat device for an air compressor, which is disposed in an air suction passage of an air compressor, and may secure reliable flow control by changing a cross-sectional area of the passage through application of force to the passage, significantly reduce a possibility of unsteady flow by suppressing generation of a vortex in an air stream, secure a desired flow rate without pressure loss in the air stream, and reduce fatigue load applied to a compressor impeller through stabilization of suction flow in order to achieve significant reduction of vibration of the impeller is provided.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: February 3, 2015
    Assignee: Daejoo Machinery Co. Ltd.
    Inventor: Jae Hyung Lee
  • Patent number: 8585353
    Abstract: A variable inlet area turbine employs a volute with a discharge area for flow of exhaust gas carried in the volute into a turbine inlet area. A flexible dividing wall having an end is movable along a path defined adjacent the turbine inlet area and transitioning in a smooth curve into an outer wall of the volute. The dividing wall is selectively positionable by insertion and withdrawal along the path to vary the discharge area from substantially closed to substantially open.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: November 19, 2013
    Inventor: Steven Don Arnold
  • Patent number: 8425182
    Abstract: An expansion turbine with a radial turbine wheel has a main path that gradually increases in height and axially discharges fluid while swirling from a main inlet located at the outer circumferential side into the main path, with a radial flow as a main component, the radial turbine wheel has a sub-path branching off from the side of a hub of the main path at a position radially inward of the main inlet and extending rearward from the main path, the sub-path has, at an outer circumferential end, a sub-inlet located at a position in the radial direction different from the main inlet and supplied with a fluid having a pressure different from the pressure of the fluid supplied through the main inlet, the main inlet and the sub-inlet are partitioned by a back plate portion, in which the gap between it and the main path or the sub-path is adjusted.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: April 23, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hirotaka Higashimori, Masayuki Kawami
  • Patent number: 8403635
    Abstract: A diffuser apparatus includes a diffuser communicating radially outwardly with an exit of an impellor. The apparatus includes a housing with a plate that is rotatable about a rotational axis and forms a hub side wall. A side surface of the plate has a vane having one circumferential end fixed to the plate; the other end is movable in the direction of the axis. The housing includes an inclination path with one end opened to the hub side wall to bendably guide the vane so that the other end of the vane moves in the circumferential direction upon rotation of the plate and moves in the direction of the axis to a projected position to project into the diffuser. An actuator rotates the plate to drive the vane between the projected position and a retracted position where the other end is retracted into the hub side wall.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: March 26, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masakazu Tabata
  • Patent number: 8393858
    Abstract: A coupling assembly for a turbine shroud is provided. The coupling assembly comprises a rotatable positioning block having a first surface, and a biasing spring having a second surface, the second surface generally facing the first surface, and the biasing spring adapted to exert a force toward the positioning block when compressed.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: March 12, 2013
    Assignee: Honeywell International Inc.
    Inventors: Jason Smoke, Michael Kahrs
  • Patent number: 8303242
    Abstract: A hydropower generating turbine having an impeller housing disposed to receive water, at least one impeller disposed within the impeller housing, at least one adjustable duct pivotally connected to the impeller housing, and, where the duct has a plurality of duct leafs, wherein the duct leafs articulate and cause the duct to converge and diverge for selectively disposing a fluid about the impeller. The ducts may be inflow or outflow ducts, and the turbine may react to a change in the fluid and alter the shape of the impeller. Further, the turbine may have an automated controller where variable change in the flow is detected by a sensor and transmitted to the automated controller to cause a directional shift in the multidirectional turbine.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: November 6, 2012
    Assignee: Hydro Green Energy, LLC
    Inventors: Wayne F. Krouse, Frederick E. Becker, Andrew R. Provo
  • Patent number: 8292569
    Abstract: An air regulator comprises a housing, a shaft, a first air regulation member and an elastic ring. The shaft is rotationally fixed within the housing. The first air regulation member is coaxially coupled to the shaft and has a plurality of first air flow apertures positioned radially about the shaft. The elastic ring is configured and positioned to centrifugally deform and increasingly block the first air flow apertures.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: October 23, 2012
    Assignee: Schmid & Wezel GmbH & Co.
    Inventor: Jan Sitzler
  • Patent number: 8286425
    Abstract: An energy conversion system, including a wave chamber, and a turbine wheel coupled to a shaft and fluidly coupled with the wave chamber. The energy conversion system may also include a first radial flow passage fluidly coupled with the wave chamber and the turbine wheel, and first vanes disposed at least partially in the first radial flow passage, each of the first vanes being compliantly mounted and pivotal between first and second positions, the first vanes being configured to allow a motive fluid to flow in a first radial direction through the first radial flow passage when the first vanes are in the first position, and the first vanes being configured to substantially prevent the motive fluid from flowing through the first radial flow passage in a second radial direction when the second vanes are in the second position.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: October 16, 2012
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Patent number: 8206089
    Abstract: A flow control device for controlling fluid flow into a turbine comprising a stator and a rotor located in a fluid flow direction downstream of the stator is provided. The stator has a plurality of vanes extending radially inwards from a casing. Nozzles are defined, with each being defined between each adjacent pair of vanes. A flow controller is arranged to control a nozzle area open for fluid flow from a stator to rotor by altering the radial length of at least one of the nozzles and comprises an actuator and baffle plates connected at first ends thereof to a periphery of the turbine and at second ends thereof to arcuate plates of the actuator. Each baffle plate extends through a corresponding nozzle from an upstream to a downstream side of the stator. The actuator may selectively move the baffle plates to adjust flow through the nozzles.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: June 26, 2012
    Assignee: Parsons Brinckerhoff Limited
    Inventors: Paul Michael Willson, George Andrew Atkinson
  • Patent number: 8172517
    Abstract: A system for passively controlling a variable position guide vane in a turbo-machine. The system includes a shaft rotatable about an axis with an airfoil connected thereto. The shaft is biased toward a closed position, but will open in response to fluid flowing through a flowpath. The guide vane can then be locked in an open position at a desired operating condition of the turbo-machine.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: May 8, 2012
    Assignee: Rolls-Royce North American Technologies, Inc.
    Inventor: Kerry Jon Lighty
  • Patent number: 8118544
    Abstract: An exemplary locating mechanism includes a bearing outer race (422) that has a central axis (z-axis) and that has a turbine end, a compressor end and a slot (421), of an axial length, disposed between the turbine end and the compressor end; and a deformable clip (430) shaped as a semi-cylindrical wall having an axial length less than the axial length of the slot, where in a tension state, the clip (430) has an inner circumference to position the clip (430) with respect to the slot (421) and where in a compression state, the clip (430) has an inner circumference that locates the clip (430) in the slot (421). Various other exemplary technologies are also disclosed.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: February 21, 2012
    Assignee: Honeywell International Inc.
    Inventor: Steven Don Arnold
  • Patent number: 8113769
    Abstract: Expansion turbine having a variable nozzle mechanism comprises an adiabatic expansion device located in a vacuum container having a turbine impeller therein which rotates and drives the turbine impeller during adiabatic expansion of very low temperature gas, and varies the throat area of very low temperature gas introduced in the turbine impeller by driving a nozzle member disposed near the outside end of the adiabatic expansion device by a drive force from a driving member located outside the vacuum container; a plate member provided detachably in contact with the outside end of the body of the adiabatic expansion device, wherein the support side of the nozzle member is connected to and supported by the plate member, and the drive side of the nozzle member is connected to and supported by the driving member.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: February 14, 2012
    Assignee: IHI Corporation
    Inventors: Toshio Takahashi, Seiichiro Yoshinaga, Hirohisa Wakisaka
  • Patent number: 8087875
    Abstract: A multidirectional hydrokinetic power generating turbine has an impeller housing with one or more impellers disposed within the impeller housing, one or more adjustable ducts pivotally connected to the impeller housing, and a plurality of duct leafs disposed about the one or more ducts. The plurality of duct leafs articulate and cause the one or more adjustable ducts to converge and diverge to selectively disposing a fluid about the one or more impellers.
    Type: Grant
    Filed: September 27, 2008
    Date of Patent: January 3, 2012
    Inventor: Wayne F. Krouse
  • Patent number: 8061963
    Abstract: A wind turbine system includes a kite positioned upstream to a turbine to direct wind to the turbine, thereby increasing revolutions per minutes and power output of the turbine.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: November 22, 2011
    Inventor: Franklin F K Chen
  • Patent number: 8011882
    Abstract: A vane assembly for a gas turbine engine, the assembly including a plurality of vanes 14 with an asymmetric organic metal/ceramic matrix composite lay up, such that when the vanes 14 are placed in tension or compression the profile of the vane 14 will alter by twisting or untwisting. Other materials may be provided for the vanes 14, and/or other methods may be used for placing the vanes 14 in tension or compression to provide positive changes to the profile thereof.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: September 6, 2011
    Assignee: Rolls-Royce Plc
    Inventor: Alison J. McMillan
  • Patent number: 7942632
    Abstract: A variable shape inlet guide vane (IGV) system includes a variable-shape IGV flap with a flexible portion that enables the desired spanwise distribution of Cx, alpha, and beta at a fan rotor inlet. An actuation system that rotates a root section of the variable-shape IGV flap to flex the flexible portion such that the twisted shape of the flap can reverse rather symmetrically during actuation from max open to max closed.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: May 17, 2011
    Assignee: United Technologies Corporation
    Inventors: Wesley K. Lord, Om P. Sharma, Christopher Dye, Gabriel L. Suciu
  • Patent number: 7644583
    Abstract: Turbocharger apparatus (1) comprising a housing (4), a compressor, a turbine (40), a first inlet (39) for enabling air to be conducted to the compressor, an outlet (36) for enabling air from the compressor to be conducted to an engine, a second inlet (53) for enabling exhaust gases from the engine to be conducted to the turbine (40), a chamber (96), a bearing assembly (82) for permitting the rotation of the turbine (40), and a control system (5, 10) for controlling the speed of the turbine (40), the control system (5, 10) having an exhaust gas sealing system (8, 21, 26) which prevents exhaust gas leakage from the turbocharger apparatus (1), and which allows expansion of parts within the exhaust gas sealing system (8, 21, 26) at high temperatures.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: January 12, 2010
    Inventor: Malcolm George Leavesley
  • Publication number: 20090324392
    Abstract: The present invention relates to a fresh gas system (1) for supplying an internal combustion engine (4) with fresh gas, in particular in a motor vehicle, having a charging device (8) for increasing the pressure of the fresh gas and having a swirl generator (12), which is arranged upstream of the charging device (8), for generating a swirl, which rotates about the main flow direction of the fresh gas, in the fresh gas, wherein the swirl generator (12) has guide blades (14) with adjustable angle of incidence. In order to be able to produce the fresh gas system (4) more cost-effectively, the swirl generator (12) has a flow guide body (13) on which the guide blades (14) are integrally formed and which, in order to adjust the angle of incidence of the guide blades (14), can be twisted with elastic deformation about the main flow direction starting from an undeformed initial position.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 31, 2009
    Inventors: Tristan Fleischer, Neil Fraser
  • Patent number: 7566251
    Abstract: A propulsion or pumping device which includes two counter-rotating shafts (3, 4) each carrying at least one impeller (7, 8), wherein each impeller (7, 8) can deflect by a predetermined amount in directions substantially perpendicular t to the longitudinal axis of the shaft (3, 4) on which the impeller (7, 8) is mounted.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: July 28, 2009
    Assignee: Propeller Jet Limited
    Inventors: Paul Mark Paterson, Barry John Davies
  • Publication number: 20090110544
    Abstract: A compressor for a turbine engine includes an inflatable bleed valve that selectively bleeds core airflow from the compressor. The bleed valve has an inlet leading from the compressor and a passageway leading from the inlet. An inflatable valve selectively obstructs the passageway based upon a controlled supply of high pressure air to the inflatable valve. The supply of high pressure air may be compressed core airflow from an area downstream of the inlet to the bleed valve.
    Type: Application
    Filed: December 1, 2004
    Publication date: April 30, 2009
    Inventors: Gabriel L. Suciu, Lawrence E. Portlock, Brian Merry
  • Patent number: 7249930
    Abstract: A turbine housing assembly includes a tubular piston disposed in a bore of a turbine housing and axially slidable between a closed position and an open position for blocking a nozzle by an amount dependent on axial positioning of the piston. A bypass control member is disposed in the turbine housing and is slidable between a no-bypass position closing a bypass passage and a open bypass opening the bypass passage. The piston is structured and arranged to slide relative to the bypass control member for a part of a full stroke of the piston from the closed position toward the open position thereof, and then to engage the bypass control member and cause the bypass control member to slide together with the piston as the piston further slides toward the open position thereof such that the bypass control member is moved toward the bypass position.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: July 31, 2007
    Assignee: Honeywell International, Inc.
    Inventors: Alain R. Lombard, Sebastien Ferrari, Jean Luc Perrin, Patrick Masson
  • Patent number: 7182571
    Abstract: A variable stator vane actuating lever (50) for use in a compressor (20) of a gas turbine engine (10). The lever (50) comprises a first end (52) for pivotal connection to a stator vane actuator ring (36) and a second end (54) for abutting a stator vane spindle (32). The stator vane spindle (32) has a diameter and flat positions (56,58,60,62). The second end (54) of the lever (50) has resilient members (64,66) for abutting the flat portions (56,58,60,62) of the stator vane spindle (32) at diametrically opposite locations. The resilient members (64,66) are integral with the second end (54) of the stator vane spindle (32) and are curved so that they are substantially tubular to provide even load distribution and improved location of the lever (50) on the stator vane spindle (32).
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: February 27, 2007
    Assignee: Rolls-Royce plc
    Inventor: Alan L Selby
  • Patent number: 7112039
    Abstract: A method for improving the wear characteristics of a system for operating a variable vane comprising the steps of providing a trunnion connected to the variable vane via an vane platform and means for causing rotation of the trunnion, and positioning a thrust washer formed from a carbon material about a lower portion of the trunnion and in a space between the vane platform and an outer split case so that during operation of the system the space between the vane platform and the outer split case is maintained substantially constant and unwanted deflection of the vane is avoided.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: September 26, 2006
    Assignee: United Technologies Corporation
    Inventor: Robert T. Brooks
  • Patent number: 7074008
    Abstract: A rotator with an impeller and a stator generating an induced voltage are arranged in a casing. The tap water flowing flows through a main passage, which has a first jet orifice facing the impeller, and rotates the impeller. A bypass running from the inflow port and passing around an outer periphery of the stator is provided. When the water pressure is high, a check valve closing the bypass is opened against a spring force and the water flows out to a drain port, while the impeller is stably rotated by a pressure of water jetted from a second jet orifice penetrating from the bypass to face the impeller, which pressure is in reverse proportion to a speed of flow inside the bypass.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: July 11, 2006
    Assignee: Taiyo Kagaku Kabushiki Kaisha
    Inventors: Hiroshi Motonaka, Yoshio Shiozaki
  • Patent number: 6994518
    Abstract: A pre-whirl generating apparatus (26) is provided that employs deformable air deflecting vanes (46) adjacent the inlet (18) of a radial air compressor (12-22), which vanes (46) can be mechanically deformed to generate positive, neutral, or negative pre-whirl flow to the compressor. A minimum number of parts are used to position one or more thin, deformable vanes (46) in the intake channel (34) leading to the compressor inlet (18). In their undeformed position, the vanes (46) do not deflect the incoming air, thereby causing little or no flow restriction. To achieve the desired positive or negative pre-whirl of flow to the compressor (12-22), the trailing edge (62) of the vanes (46) are deflected transverse to the direction of flow in the channel (34) in either the positive or negative direction.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: February 7, 2006
    Assignee: BorgWarner Inc.
    Inventors: Volker Simon, Mathias Weber, Christian Holzschuh
  • Patent number: 6899513
    Abstract: A compressor bleed valve system for bleeding air from a gas turbine engine compressor comprises a bladder inflatable between at least a collapsed position and an expanded position for selectively opening and closing a compressor airbleed passage.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: May 31, 2005
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Andreas Eleftheriou
  • Patent number: 6799945
    Abstract: A spring (15) of angular shape is placed between the lug (17) of a connecting rod (10) controlling the orientation of a stator blade and the pivot (3) of said blade, such that its edge (18) bends against one edge face (19) of the connecting rod (10) and the washer (16) moves the pivot (3) in the play of the bore (21) of the connecting rod and sets and maintains the contact between two plane faces (12 and 13), so as to reduce the differences in angular displacements between the connecting rod and pivot due to the play remaining in the bore (21).
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: October 5, 2004
    Assignee: Snecma Moteurs
    Inventors: Alain Chatel, Fabrice Marois, Dominique Raulin
  • Patent number: 6779971
    Abstract: A turbine in which a turbine wheel is mounted in a housing between an inlet and an outlet. Rotatably mounted vanes are located in the inlet and coupled by linkages to an actuator which is displaceable relative to the vanes so as to control the angular orientation of the vanes relative to the housing inlet. Each vane is coupled to the actuator by a flexible link, the ends of the link being secured to the vanes and actuator in a manner which prevents relative movement between the link ends and the vane or the actuator. Flexing of the links thus accommodates the rotation of the vanes which results from actuator displacements.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: August 24, 2004
    Assignee: Holset Engineering Company, Limited
    Inventor: Stephen E. Garrett
  • Patent number: 6769449
    Abstract: Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are constrained to move faster than vanes on the first impeller. Water is subsequently caused to flow through the second passage and to be more aggressively advanced by the second impeller.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: August 3, 2004
    Inventor: Kenneth W. Stearns
  • Patent number: 6461104
    Abstract: A flow regulator for a water pump, comprising a control valve. The control valve is mounted on an inlet pipe of a water pump and has a chamber, housing a flat-shaped control plate, the upper part of which forms a piston plate, vertically gliding in an upper chamber. The upper chamber is connected with an outlet pipe. The control valve is exposed to water pressure in the outlet pipe, with the control plate driven downward by the water pressure, countered by two springs at two lateral sides of the control plate. The control plate thus has a varying vertical position according to the water pressure.
    Type: Grant
    Filed: June 23, 2001
    Date of Patent: October 8, 2002
    Inventor: Der-Fan Shen
  • Patent number: 6350101
    Abstract: The barrel pump has a tubular pump housing and a rotor shaft which is supported by a support tube and, at its bottom end, bears an elastic cone which has a circumferential groove which interacts with the opening edge of an inlet in the manner of a snap-action closure when the rotor shaft is displaced in the direction of incoming flow with respect to the pump housing. The cone seal is situated in front of the inlet, as seen in the direction of flow. To displace the rotor shaft with respect to the pump housing, a rotary cap is provided above the outlet, pins of which cap engage in grooves of a groove flange which is screwed onto the pump housing, the grooves having a pitch, so that as a result of the rotary cap being turned relative displacement between rotor shaft and pump housing is brought about.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: February 26, 2002
    Assignee: Lutz-Pumpen GmbH & Co. KG
    Inventors: Volker Fertig, Thomas Sigel
  • Patent number: 6238178
    Abstract: Water is first caused to flow through a first passage and rotate a first impeller. Rotation of the first impeller is linked to rotation of a second impeller, which is in fluid communication with a second, discrete passage. Vanes on the second impeller are constrained to move faster than vanes on the first impeller. Water is subsequently caused to flow through the second passage and to be more aggressively advanced by the second impeller.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: May 29, 2001
    Inventor: Kenneth W. Stearne
  • Patent number: 6062810
    Abstract: A turbomolecular pump evacuates gas in an apparatus (or a chamber) by means of a rotor having blades and/or spiral grooves which rotates at a high speed. The turbomolecular pump includes a casing housing a rotor and a stator therein, a pumping section comprising the rotor and the stator, a valve element capable of opening or closing an intake port of the casing, and a supporting member for supporting the valve element. The supporting member extends through at least one of the rotor and the stator. The turbomolecular pump further includes an actuating mechanism for actuating the valve element, and the actuating mechanism is provided at a side opposite to the intake port with respect to the rotor.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: May 16, 2000
    Assignees: Ebara Corporation, Tokyo Electron Limited
    Inventors: Matsutaro Miyamoto, Hiroshi Sobukawa, Toshiharu Nakazawa, Atsushi Shiokawa, Junichi Arami
  • Patent number: 5941684
    Abstract: A variable geometry turbine comprising a housing, a turbine wheel mounted to rotate about a pre-determined axis within the housing, and a gas inlet passage to the turbine. The gas inlet passage is defined between a fixed wall and an annular sidewall which is mounted in the housing and is displaceable relative to the fixed wall between axially spaced first and second positions. The sidewall is biased away from the fixed by at least one spring towards the first position, an axial force is applied to the sidewall in opposition to the spring to thereby control the axial position of the sidewall. The spring or springs provide a non-linear length to spring force characteristics such that the resultant of the applied spring force and an axial force applied to the sidewall as a result of gas flow through the passage increases continuously as the sidewall is displaced from the first position to the second position.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: August 24, 1999
    Assignee: Holset Engineering Company Ltd.
    Inventor: John Frederick Parker
  • Patent number: 5498128
    Abstract: In a radial-flow exhaust turbocharger turbine with a row of individually adjustable guide vanes (18), said guide vanes can be turned by means of an adjusting shaft (19) supported in a casing (14). Each adjusting shaft (19) is actuated by means of a pivoting lever (21).In each case two adjacent pivoting levers (21) are coupled by means of a connecting element (24). The connecting elements have a pivot (25) at their point of attachment to the pivoting lever. The distance (A) between the pivots (25) of a connecting element corresponds to the center distance (B) between two adjacent adjusting shafts (19). As a result, all the pivoting levers perform the same angular movement.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: March 12, 1996
    Assignee: ABB Management AG
    Inventors: Jozef Baets, Marcel Zehnder
  • Patent number: 5472314
    Abstract: A variable camber vane for a turbomachine comprises leading and trailing edge parts, at least one of which is pivotable relative to the other, and a resilient joining part inserted into a space provided between the leading and trailing edge parts, the joining part being formed by a block of resilient material which is bonded to the leading and trailing edge parts and which ensures the continuity of the intrados and extrados faces of the vane to permit an even flow of fluid along the vane. The vane may also include means for enabling a cooling or heating fluid to flow in the leading and trailing edge parts, and a plurality of ducts in the resilient joining part establishing communication between the fluid flow means of the leading and trailing edge parts.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: December 5, 1995
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "SNECMA"
    Inventors: Jean-Claude L. Delonge, Claude J. A. Loudet, Gerard R. E. R. Vermont
  • Patent number: 5215434
    Abstract: Apparatus for the support and adjustment of stator blades of a gas turbine, in which an adjusting ring is connected to the stator blades by adjustment levers disposed outside the turbine housing. The adjusting ring is supported for rotation in the circumferential direction on a support ring, which has elastic resilience in the radial direction, the support ring being suspended on and centered in a movable manner on radial pins fixed in an outer housing of the turbine. The connection of the adjusting ring and the support ring is achieved by a ball-bearing which is pre-stressed. When the adjusting ring is displaced circumferentially, the stator blades are pivoted around suspension shafts by levers fixed to the shafts and connected to the adjusting ring for universal pivotal movement.
    Type: Grant
    Filed: January 27, 1992
    Date of Patent: June 1, 1993
    Assignee: MTU Motoren-und-Turbinen Union Munchen GmbH
    Inventors: Christian Greune, Helmut Gross, Georg Zotz
  • Patent number: 5211530
    Abstract: In accordance with the present invention, an improved variable breadth imler for use in a variable capacity centrifugal pump and a method for adapting a variable capacity centrifugal pump to produce a specific predetermined shutoff head are provided. The variable breadth impeller is a two piece unit comprising an impeller element having a plurality of radially extending impeller vanes thereon and an axially movable shroud having a plurality of radially extending grooves therein for receiving the impeller vanes in a meshing relationship. The movable shroud further includes a plurality of axially extending grooves in its outer peripheral surface which act as a supplemental pumping means between minimum flow rate condition and shutoff condition. The operation of the improved variable breadth impeller results in a specific predetermined pressure head being attained and maintained at pump shutoff operating condition.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: May 18, 1993
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Mark E. Shiffler
  • Patent number: 5178513
    Abstract: Turbine nozzle phasing device for controlling a flow of gasses to a plurality of nozzles in response to a control signal. The turbine nozzle phasing device includes a housing having a lower portion which includes a first plenum for receiving the flow of hot gasses and an upper portion which includes a second plenum integral with the first plenum, a detachable partition for separating the first plenum from the second plenum and a first nozzle which communicates with the first plenum. Hot gasses flowing into the first plenum flows through the first nozzle. A set of second nozzles is provided which communicates with the second plenum. Partition detaching apparatus is also included for detaching the detachable partition in response to the control signal to permit a portion of the hot gasses flowing into the first plenum to flow into the second plenum and through the set of second nozzles.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: January 12, 1993
    Assignee: Sundstrand Corporation
    Inventors: William C. Trommer, Gary D. Nohr
  • Patent number: 5169286
    Abstract: This invention relates to an improvement on a centrifugal pump including: a casing defining an inlet path extending at the axial portion thereof, a turbine chamber communicating with the inlet path, and an outlet path disposed at the outer periphery portion of the turbine chamber; a drive shaft rotatably held in the casing; and a turbine fixed on the drive shaft and disposed rotatably in the turbine chamber.
    Type: Grant
    Filed: January 9, 1992
    Date of Patent: December 8, 1992
    Assignees: Yutaka Yamada, Aisin Seiki Kabushiki Kaisha
    Inventor: Yutaka Yamada
  • Patent number: 5039277
    Abstract: A variable vane assembly for a gas turbine engine is disclosed having a disk member bearing against a recess formed in the inner surface of the gas turbine engine casing is formed separately from the vane. The disk member has a diametrical notch that accommodates a strip member formed integrally with the vane and which extends generally parallel to the chord of the vane. The control rod, which is also formed integrallly with the vane, passes through an opening defined by the disk member and is pivotally supported by the engine casing. A low friction sleeve may be interposed between the control rod and the opening defined by the engine casing to reduce the pivoting friction of the vane. This sleeve may be formed as a separate element, or may be formed integrally with the disk member, which may also be formed of low-friction material.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: August 13, 1991
    Assignee: Societe National d'Etude et de Construction de Moteurs d'Aviation
    Inventor: Jacky Naudet
  • Patent number: 5035572
    Abstract: An arrangement for adjusting guide blades by thermal expansion has an expansion rod which has a significantly different coefficient of linear expansion with respect to the supporting housing and is aligned in the circumferential direction of the turbo-engine and is connected with an adjusting ring by way of a step-up lever. As a result, a guide blade adjustment can be achieved easily as a function of the working gas temperature.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: July 30, 1991
    Assignee: MTU Motoren-und Turbinen-Union Munchen GmbH
    Inventor: Joachim Popp
  • Patent number: 4984965
    Abstract: A mounting assembly for a movable annular wall member of an inlet passageway of a variable geometry turbine. The inlet passageway is defined between the movable wall and a facing wall. The wall member is formed from a sheet material and is supported on a plurality of pins which extend parallel to the direction of movement of the wall member. The wall member comprises a tubular portion extending away from the facing wall and each pin supports a radial extending link. Each link is engaged in a respective slot in the tubular portion of the wall member, the links being a relatively close fit in the direction of movement of the wall member and a relatively loose fit in the circumferential direction.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: January 15, 1991
    Assignee: Holset Engineering Company Limited
    Inventor: Peter McKean
  • Patent number: 4884944
    Abstract: A flow fence for a turbo fan jet engine, as taught by Stein et al. in U.S. Pat. No. 3,841,790, is modified by the provision of serrations about its internal circumference. Thus, when the modified flow fence is inserted into or removed from the flow field, a more gradual transition occurs in the flow thereby improving surge margins.
    Type: Grant
    Filed: September 7, 1988
    Date of Patent: December 5, 1989
    Assignee: Avco Corporation
    Inventor: David L. Tate
  • Patent number: 4874288
    Abstract: An inlet guide vane assembly for a pump or a compressor having rotary blades. The guide vanes pivot in a controlled manner so that a portion of the vanes can be inserted into or withdrawn from the inlet passageway of the pump or the compressor by pivoting the guide vanes about a pivot axis.
    Type: Grant
    Filed: May 3, 1988
    Date of Patent: October 17, 1989
    Inventor: D. Davorin Kapich
  • Patent number: 4810165
    Abstract: An adjusting mechanism for pivotal guide blades of turbo-propulsion units in which a rotatable adjusting ring is supported in a concentric support ring. The support ring is heat-insulatingly connected with the turbine housing by way of several connecting lugs or slide block guidances distributed over the circumference and the adjusting ring is connected with the guide blades by way of bendable pivot levers. It is achieved thereby that the heat flow from the hot turbine housing to the adjusting mechanism remains small and an exact adjustment of the guide blades can be achieved in this manner.
    Type: Grant
    Filed: July 8, 1987
    Date of Patent: March 7, 1989
    Assignee: MTU Motoren- und Turbinen-Union Munchen GmbH
    Inventors: Christian Greune, Hilbert Holzhauer