| Entries |
| Document | Title | Date |
|---|
| 20080298966 | DYNAMICALLY BALANCED MOLDED BLADE ASSEMBLIES FOR BLOWERS AND FANS - Dynamically balanced molded blade assemblies may be formed. A face plate of a dynamically balanced molded blade assembly may have one or more openings and/or one or more protrusions so that the blade assembly is within acceptable balance tolerance when rotated by a motor shaft of a fluid moving device. | 12-04-2008 |
| 20090004007 | Centrifugal fan and blower having the same - A centrifugal fan includes a plurality of blades, a first wall disposed at first axial ends of the blades, and a second wall disposed at second axial ends of the blades and having a shaft portion at a center. At least one of the first wall and the second wall has a cutout portion configured to control balance. | 01-01-2009 |
| 20090010760 | METHOD OF CORRECTING BALANCE OF GAS TURBINE - A method of correcting the balance of a gas turbine formed so that a balance between the generator side shaft end of a rotor and the shaft end of the gas turbine can be corrected within the range of service rotational speed. In the method, after the rotor is assembled in a casing, the balance is corrected while the rotor is rotated up to a high service rotational speed to remove its residual unbalance at the high rotational speed at which an unbalance due to the elastic deformation of the rotor occurs so as to reduce a vibration due to the unbalance. Accordingly, when the gas turbine is assembled, the residual unbalance resulting from the assembly of the gas turbine, a compressor, and a generator formed on a same rotating axis can be reduced. As a result, the gas turbine which does not increase a vibration at a critical speed can be provided. | 01-08-2009 |
| 20090022590 | Method of balancing a suction unit comprising a ventilator and an electric motor - A method of manufacturing an electrical suction unit for use in a vacuum cleaner includes a turbine unit and an electrical motor with a rotor and a stator. The turbine unit is attached to the rotor and forms, together with the rotor, a rotatable part of the suction unit, which is rotatable about an axis of rotation. An amount of material is removed from the rotor and from the turbine unit to torque-balance the rotatable part of the suction unit. In this manner, the amount of material to be removed from the rotor to torque-balance the rotatable part is considerably reduced, so that the adverse influence of the removal of the material from the rotor on the performance of the electrical motor is limited. | 01-22-2009 |
| 20090035136 | METHODS AND APPARATUS FOR BALANCING A ROTOR - A method for balancing a rotor of a rotary machine, wherein the rotor includes at least two rotor blades and a rotor shaft, includes receiving at least one measurement of either a load, an acceleration, or a displacement that pertains to at least one bending moment acting on the rotor shaft, determining at least one value of the at least one bending moment acting on the rotor shaft based, at least in part, on the received at least one measurement, and determining a pitch offset angle value of at least one rotor blade that facilitates reducing the at least one bending moment acting on the rotor shaft. | 02-05-2009 |
| 20090041582 | COOLING FAN - A cooling fan includes a fan housing ( | 02-12-2009 |
| 20090087313 | AIRCRAFT TURBOMACHINE FAN COMPRISING A BALANCING FLANGE CONCEALED BY THE INLET CONE - The present invention relates to an aircraft turbomachine fan ( | 04-02-2009 |
| 20090092492 | BALANCING GROUP FOR THE ROTOR OF A FLUID ROTARY MACHINE - A balancing group ( | 04-09-2009 |
| 20090142193 | WIND TURBINE BLADE COMPRISING ONE OR MORE OSCILLATION DAMPERS - The invention relates to a wind turbine blade comprising one or more oscillation dampers for damping oscillations or vibrations of the wind turbine blade. The first damper parts being rigidly connected to the blade or being a part of the blade. The dampers further comprise second damper parts, wherein the first damper part surfaces and the second damper part surfaces are arranged to move relatively to each other during the oscillations. Even further the dampers comprise a load transferring coupling, coupling the first damper part surfaces and the second damper part surfaces, so that the relative movement results in a oscillation-damping dissipation of kinetic energy. | 06-04-2009 |
| 20090169383 | ROTOR BALANCE DEVICE AND METHOD - A rotor balance fitting to balance an aircraft rotor includes a ring, bore, and cup. The ring includes an inner surface configured to mate with an outer surface of a blade for the aircraft rotor. The bore is disposed through the ring and configured to receive a blade pin that passes perpendicularly through an axis of the blade and secures the blade to the rotor. The cup is disposed in the ring and is configured to secure a weight. | 07-02-2009 |
| 20090196750 | Fluid rotor - A rotor having at least two flightings includes a plurality of elongated support ribs rigidly interconnecting at axially spaced intervals, the outer edge of a first flighting with the inner edge of the other flighting, the ribs having a connecting boss at a distal end and a balancing mass intermediate a proximal end and the distal end. A method of forming the rib is further included. | 08-06-2009 |
| 20090263247 | DUAL ROTOR VIBRATION MONITORING - Vibration is monitored in a dual rotor engine. A first total vibration of the engine is measured during operation. Relative phase of the two rotors is then clocked, and a second total vibration of the engine is then measured during operation. First and second total unbalances are then resolved at a common response frequency from the measured total vibrations. First and second rotor unbalances are then resolved for the corresponding rotors from the first and second total unbalances. In a further method, corresponding corrective balance weights may be determined for offsetting the resolved rotor unbalances. | 10-22-2009 |
| 20090304509 | BALANCING SYSTEM FOR TURBOMACHINE ROTOR - The present invention relates to a turbomachine rotor balancing system ( | 12-10-2009 |
| 20100008778 | MONOLITHIC AND BI-METALLIC TURBINE BLADE DAMPERS AND METHOD OF MANUFACTURE - A method for manufacturing a turbine damper by a metal injection molding process is disclosed. The damper includes a base section and a wire section, and is formed of a nickel-base or cobalt base superalloy. | 01-14-2010 |
| 20100028151 | Field Installable and Removable Helicopter Rotor Blade Vibration and Blade Tracking Device - This invention provides convenient airframe vibration and tracking improvements of a helicopter rotor blade by use of an elastomer profile system that is attached through an adhesive system that allows convenient removal and relocation for use by the helicopter manufacturer or by the helicopter operator in a field environment. | 02-04-2010 |
| 20100074752 | ROTOR WITH IMPROVED BALANCING FEATURES - A rotor assembly for a gas turbine engine including a circumferential array of regularly spaced apart features provided on the disk which are each configured for receiving a balancing weight. The circumferential array of features has an angular orientation relative to the circumferential array of blades such that the features are each located at an at least substantially same offset angle from a stacking line of a respective adjacent blade. | 03-25-2010 |
| 20100080705 | ROTOR DISC AND METHOD OF BALANCING - A rotor disc, such as one made of a damage intolerant material or other material sensitive to stress concentrations, has at least one balancing assembly which includes a plurality of circumferentially spaced-apart sacrificial protrusions projecting between adjacent stress-relieving slots. Selective material removal is permitted from the rotor disc, while managing stress concentrations in the rotor disc created by such material removal, such that the rotor disc may be balanced without detrimentally affecting its service life. | 04-01-2010 |
| 20100183442 | Helicopter Rotor Comprising a Vibration Damper, and Method for Updating the Same - A rotor for a helicopter, having: a hub rotating about an axis and in turn having a number of blades; and an at least partly hollow drive shaft connectable to a drive of the helicopter and connected functionally to the hub to rotate the hub about the axis; the rotor also having vibration damping means in turn having a mass, and an elastically deformable member connected to the mass and supported by the shaft; the member extending at least partly inside the shaft, and being elongated parallel to the axis; and the mass vibrating, in use, at such a frequency as to oppose transmission to the shaft of the vibration produced by rotation of the hub and blades. | 07-22-2010 |
| 20100189561 | Horizontal Wind Turbine Blade Balancing Accessory - A balancing assembly for use in a wind turbine having at least one pair set of blades, the balancing assembly comprising a ballast and a ballast receiving structure on at least one blade of the pair set of blades. The ballast provides a threaded portion for engagement with the ballast receiving structure. The ballast further provides at least one end configured with a drive socket for driving said ballast into said ballast receiving structure. The ballast is capable of being trimmed to achieve a predetermined mass necessary to achieve a balance between the blades in the pair set of blades. | 07-29-2010 |
| 20100247313 | Centrifugal Impeller With Controlled Force Balance - An impeller for a centrifugal pump that includes a disk-shaped shroud having a central axis, a front surface, a rear surface, and a circular perimeter, and a hub at the center of the shroud, the hub having an axial bore. The impeller further includes a first set of vanes on the front surface of the shroud, the first set of vanes extending radially inward from the perimeter towards the hub, a second set of vanes on the rear surface of the shroud, the second set of vanes extending radially inward from the perimeter towards the hub, a balancing area on the rear surface of the shroud, the balancing area extending radially outward from the hub, and a number of openings in the shroud, the number of openings configured to allow a fluid to pass from one side of the shroud to the other. | 09-30-2010 |
| 20100260605 | BALANCE WEIGHT - A balance weight adapted to be assembled to a nose cone assembly of a turbine engine for improving a balance of the nose cone assembly is disclosed herein. The balance weight is one-piece and formed from a plurality of different materials including at least first and second materials. The first and second materials are arranged substantially heterogeneously relative to one another such that said first and second materials are separate from one another and fixed together. | 10-14-2010 |
| 20100296930 | CONCENTRATED-MASS DEVICE FOR REDUCING VIBRATION GENERATED BY A ROTORCRAFT LIFT ROTOR, AND A ROTOR HUB FITTED WITH SUCH A DEVICE - The present invention relates to a concentrated-mass device including a main oscillating mass held radially in a horizontal plane by main resilient element inside a casing suitable for being secured to the hub. The device includes a secondary main oscillating mass suspended by secondary resilient element inside a recess in the main oscillating mass to oscillate along a vertical axis perpendicular to the horizontal plane, the secondary oscillating mass being constrained to move in translation together with the main oscillating mass in the horizontal plane. | 11-25-2010 |
| 20100316496 | TRAPPED SPRING BALANCE WEIGHT AND ROTOR ASSEMBLY - A balance weight for a turbine rotor includes: (a) a block-like centerbody; (b) a pair of resilient spring arms extending laterally from opposite sides of the centerbody, the centerbody and the spring arms collectively defining an arcuate shape; and (c) at least one locating structure extending from a radially outer surface of the balance weight. | 12-16-2010 |
| 20110002785 | ROTOR BLADE ADJUSTABLE WEIGHT RETENTION SYSTEM - In one embodiment, a rotor blade balancing apparatus may include a tube member defining an inner cavity, a plurality of weights, and a biasing member. The tube member may be for the insertion into a cavity of a rotor blade. Each of the weights may be adapted to be slide-ably inserted into the inner cavity of the tube member within a cavity of a rotor blade, and slide-ably removed from the inner cavity of the tube member within a cavity of a rotor blade in order to balance a rotor blade. The biasing member may be for biasing weights, which have been slide-ably inserted into the inner cavity of the tube member within a cavity of a rotor blade, towards an end of the tube member. | 01-06-2011 |
| 20110044816 | BALANCING APPARATUS FOR ROTOR ASSEMBLY - A balancing assembly for a rotor assembly of a gas turbine engine includes a flange engaging portion defining a flange receiving opening for mating with the flange in a slidable manner. A hole extends through at least part of the flange engaging portion, the hole corresponding in size to a recess and adapted to receive a rivet or other suitable fastener to fix the balancing weight with respect to the disc. | 02-24-2011 |
| 20110123337 | CENTRIFUGAL PUMP IMPELLER - An impeller include a substantially cylindrical impeller body with an internal flow path connecting between an inlet opening through a first end surface and an outlet opening through a circumferential surface; and a balance weight embedded in the impeller body. The balance weight has a vertically-elongated shape in which its height in a cylindrical axis direction is larger than its thickness in a radial direction. The vertically-elongated balance weight is embedded in a circumferential section of the cylindrical impeller body. | 05-26-2011 |
| 20110182734 | CENTRIFUGAL PUMP IMPELLER - An impeller includes an impeller body in which an internal flow path and a recessed section are formed; a lid covering an opening of the recessed section; and a balance weight arranged between the impeller body and the lid. The lid is attached and fixed to the impeller body through an engagement section. Holding sections for the balance weight are formed in a back-side surface of the lid. When attaching and fixing the lid to the impeller body, the balance weight is sandwiched between the holding section of the lid and the impeller body to be fixed. | 07-28-2011 |
| 20110189017 | AIRCRAFT INCLUDING AN ENGINE CONTROLLED BY SYNCHROPHASING - An aircraft including at least one engine having counter-rotating rotors, the engine or at least one of the engines having imbalances associated with at least one ellipse. The aircraft includes at least one vibration damper attached in an arrangement such that, at a given engine speed and for at least one given common direction of a large axis of the ellipse or at least one of the ellipses, a speed related to the two ends of the damper is higher than for any other arrangement of the damper. | 08-04-2011 |
| 20110236211 | ENGINE COOLING FAN HAVING DYNAMIC UNBALANCE COMPENSATION - The invention relates to an engine fan device for a vehicle, characterized in that the engine fan device ( | 09-29-2011 |
| 20120003093 | REDUCTION OF TURBOCHARGER CORE UNBALANCE WITH CENTERING DEVICE - Turbochargers operate at extremely high speed, so balance of the rotating core is of the utmost importance to turbocharger life. A special frusto-conical, or frusto-spherical, centering geometry is added to the interface of the compressor nut and the nose of the compressor wheel to aid in keeping the wheel, nut, and stub-shaft centered on the turbocharger axis to reduce the degree of core unbalance. | 01-05-2012 |
| 20120093650 | FAN WHEEL FOR A BLOWER MODULE - The invention relates to a fan wheel ( | 04-19-2012 |
| 20120134825 | PITCH SYSTEM BALANCING - A balancing method and system for a partial pitch rotor blade for a wind turbine is described. Balancing elements are mounted to the pitch system of the rotor blade, which remove the need for complicated balancing operations to be performed which may affect the structural stability of the rotor blade body. A method is described wherein a suitable compensating balancing weight for mounting to the pitch system may be used, the weight chosen based on the known tip and root weights of standard blade extender and rotor blade parts used. | 05-31-2012 |
| 20120219419 | ROUND AXIAL FAN WITH BALANCING STRUCTURE - A round axial fan with balancing structure includes a hub, a ring-shaped band located around an outer side of the hub, and a plurality of blades extended between the hub and the ring-shaped band. At least one removable area is defined on the ring-shaped band for serving as a balancing area. By determining and removing one or more balancing areas at appropriate locations from the ring-shaped band, uneven weight distribution of the components of the round axial fan can be adjusted to enable stable rotation of the fan without producing vibration. The provision of the balancing area on the ring-shaped band of the round axial fan also enables reduced material and labor costs for adjusting the weight distribution of the fan. | 08-30-2012 |
| 20120269630 | ROTOR DAMPER DEVICE, AND AN ASSOCIATED ROTOR AND AIRCRAFT - A damper device ( | 10-25-2012 |
| 20120301298 | BALANCING OF ROTATABLE COMPONENTS - A balanced rotor component for a gas turbine engine having a aerofoil with a root and an rotor with an axial aerofoil root slot. The aerofoil root has a cavity which holds a balance weight. The cavity is open along at least one wall and the balance weight is spaced from the slot wall to minimise stress concentrations. | 11-29-2012 |
| 20120301299 | Composite Rotor Blade Having Weighted Material for Mass Balancing - A rotor blade for an aircraft includes a composite portion having fiber-reinforced resin material, the composite portion having an outside surface that forms at least a partial airfoil shape. The weighted portion includes a plurality of weighted material layers and a plurality of fiber-reinforced resin material layers. Weighted material is configured to be compatible with and integrated into composite manufacturing processes used to fabricate the rotor blade. The weighted portion has a higher density than the composite portion and positioned to produce desired mass balance characteristics of the rotor blade. | 11-29-2012 |
| 20120321467 | ENERGY SAVING FAN - An energy saving fan comprising a pellet ( | 12-20-2012 |
| 20130183154 | CANTILEVER FAN - A cantilever fan including a cantilever blade that is clamped at one end. The fan includes an actuator that applies a periodic force to the blade resulting in periodic deflections of the blade. | 07-18-2013 |
| 20130216383 | COMBINED SEALING AND BALANCING ARRANGEMENT FOR A TURBINE DISC - A turbine disc for a turbine is provided with a first protrusion and a second protrusion. The first protrusion and the second protrusion are formed in such a way that a balancing weight is coupleable between the first protrusion and the second protrusion. The first protrusion has a sealing section that is capable of sealing a fluid passage between the turbine disc and a further turbine part of the turbine. | 08-22-2013 |
| 20130236310 | Turbomachine Rotor Balancing System - A turbine rotor balancing system comprises a circumferential array of mounting features. One or more balance weights are each mounted to the respective associated said mounting feature. Each balance weight comprises: a front wall along the forward face of the mounting feature; an aft wall along the aft face of the mounting feature; and a radially inboard wall. One or more fasteners each extend at least partially through holes of the front wall and rear wall of an associated said balance weight and through a hole of the associated said mounting feature. An abutment surface of the rotor is positioned to engage an outboard end of at least one of the front wall and aft wall of each said balance weight. | 09-12-2013 |
| 20130280072 | Air-Jet Wind Turbine Generator - An air jet wind turbine generator comprises an air jet installed at the end of each turbine blade. The air jets are perpendicular to the turbine blades and capable of outputting a recoil velocity that is also equal to or within ±20 degrees of the linear velocity of the turbine blade ends. The air jets utilize a counteracting force to accelerate or decelerate each turbine blade and to compensate the rotating speed of the wind turbine. The air volume and speed of the air jets can be adjusted via a speed sensor, thereby constantly maintaining the wind turbine generator rotating speed at the set speed. | 10-24-2013 |
| 20130323058 | TURBINE DAMPER - A damper for a turbine rotor assembly of a gas turbine engine is disclosed. The damper includes a width dimension, a height dimension, and a length dimension, and a forward plate and an aft plate. The aft plate is larger than the forward plate along the width and height dimension and includes an upper portion extending in the height dimension, the upper portion having a non-symmetric configuration. The damper further includes a longitudinal structure extending in the length dimension and connecting the forward plate and the aft plate. | 12-05-2013 |
| 20140023504 | FIRST STAGE COMPRESSOR DISK CONFIGURED FOR BALANCING THE COMPRESSOR ROTOR ASSEMBLY - A first stage compressor disk of a gas turbine engine includes a body. The body includes a forward end, an aft end, and an outer surface. The body also includes a plurality of forward balancing holes through the outer surface. The forward balancing holes align circumferentially about the body. The body further includes a plurality of aft balancing holes through the outer surface. The aft balancing holes align circumferentially about the body and are located aft of the forward balancing holes. The first stage compressor disk also includes a radial flange at the aft end of the body. The radial flange extends radially outward from the body. The radial flange includes slots for mounting airfoils. | 01-23-2014 |
| 20140093375 | REDUCED HEIGHT LIGAMENTS TO MINIMIZE NON-INTEGRAL VIBRATIONS IN ROTOR BLADES - A system for minimizing non-integral vibrations in rotor blades located in a compressor section of a gas turbine engine includes a casing having a plurality of bleed slots, at least one of the bleed slots being located in close proximity to a row of rotor blades, a plurality of structural ligaments, at least one of the structural ligaments extending between two adjacent ones of the bleed slots; and a channel for reducing the height of at least one of the structural ligaments so as to minimize the non-integral vibrations in the rotor blades in the row. | 04-03-2014 |
| 20140105744 | BLOWER - A blower includes a fan that causes momentum to air by rotation, a shaft that defines a rotation axis of the fan, a bearing that supports the shaft outside of the fan, and a weight that is movable in a direction of rotation of the fan. In the fan, the weight is located opposite to the bearing with respect to an end of the fan adjacent to the bearing, and thus an increase in weight by the weight can be reduced. | 04-17-2014 |
| 20140119918 | DAMPER FOR A TURBINE ROTOR ASSEMBLY - A damper for a turbine rotor assembly of a gas turbine engine may include a forward plate including a forward face and an aft face, and an aft plate including a forward face and an aft face. The aft face of the forward plate may he connected to the forward face of the aft plate with a longitudinal structure. An area of the aft plate in a plane transverse to the longitudinal structure may be larger than an area of the forward plate in the plane transverse to the longitudinal structure. The damper may also include a nub projecting from a lower portion of the aft face of the aft plate. | 05-01-2014 |
| 20140140849 | GAS TURBINE ENGINE COMPRESSOR ROTOR ASSEMBLY AND BALANCING SYSTEM - A method for balancing a compressor rotor assembly including a forward weldment ( | 05-22-2014 |
| 20140212288 | HIGH CAPACITY ELEVATOR FOR WIND TURBINE MAINTENANCE - The invention generally relates elevator assemblies suitable for lifting heavy components associated with wind turbines. In certain embodiments, the invention provides an elevator assembly encompassing a wind turbine nacelle and an elevator frame. The elevator frame is configured to surround a tower supporting the nacelle of the wind turbine and is equipped with a means for balancing the frame along a horizontal axis. In some aspects, the means for balancing the frame include a ballast tank system. | 07-31-2014 |
| 20140234106 | Balancing Weight for a Fan Wheel - A balancing weight to balance a blower wheel. The balancing weight is constructed in two pieces consisting of a spring clip and a supplemental weight. The spring clip features a retaining section for securing on the blower wheel and a receptacle section for mounting the supplemental weight. | 08-21-2014 |
| 20140341737 | DEVICE FOR REDUCING STRUCTURAL VIBRATIONS OF AIRFOILS - A device for reducing structural vibrations of aerofoils in an aircraft comprises, in the region of the aerfoil tips, at least one force generator ( | 11-20-2014 |
| 20140348655 | BALANCING BODY FOR A CONTINUOUS BLADE ARRANGEMENT - The present invention relates to a balancing body ( | 11-27-2014 |
| 20140363296 | FAN AND IMPELLER THEREOF - An impeller of a fan comprises a hub, a plurality of blades, a permeable shell and a permanent magnet. The hub includes a top portion and a side wall, and the inside of the top portion adjacent to the side wall includes a plurality of first balance rooms. The blades are disposed around the hub. The permeable shell is disposed within the hub. The permanent magnet is disposed within the permeable shell, and at least a portion of the first balance room is defined between the top portion and the permanent magnet. A fan is also disclosed. | 12-11-2014 |
| 20150292331 | BALANCING POCKETS - The invention relates to a drum rotor wheel for a fan having bulges to accommodate balancing weights. A drum rotor wheel according to the invention has several blades that are curved forward. The blades have a leading edge and a trailing edge. A top disc and a bottom disc are provided on the drum rotor wheel. At least one blade of the drum rotor wheel has a bulge on its leading edge. This bulge minimizes the area of flow separation, as a result of which the magnitude of the flow separation is likewise minimized. In other words, due to the bulge, the efficiency of the drum rotor wheel is increased. | 10-15-2015 |
| 20150315914 | A METHOD OF BALANCING A TURBINE ENGINE ROTOR, AND A ROTOR BALANCED BY SUCH A METHOD - A method of balancing a turbine engine rotor, the method including mounting screws forming balance weights on the rotor in order to form a balance configuration, each screw possessing a predetermined weight and a screw head having a visual characteristic previously associated with its weight. A rotor balanced by such a method is also disclosed. | 11-05-2015 |
| 20150322794 | ASSEMBLY OF A BALANCE WEIGHT WITH A ROTOR ELEMENT - The balance weight is fixed to the flange of a rotor element by a pre-fixing screw with a conical head engaged into a conical counterbore having a shape complementary to the flange, which places the weight at a very accurate position before permanently fixing it by a clamping stud. | 11-12-2015 |
| 20150322923 | VIBRATION-LIMITING MODULE AND DEVICE, STRUCTURAL SEGMENT FOR A STRUCTURAL INSTALLATION, AND WIND TURBINE HAVING A VIBRATION-LIMITING MODULE - A vibration absorber module for a vibration-absorbing device, in particular for a vibration-absorbing device realized for suspended attachment of the vibration absorber module to a structural installation, having a bearing structure, a pendulum system, having a pendulum mass, and having a suspension system for suspending the pendulum mass on the bearing structure, the suspension system having a number of pendulum spring elements and having a pendulum mass suspension, which extends between the pendulum mass and the bearing suspension, in the direction of a suspension axis, and the pendulum mass suspension being fastened, by means of its suspension head, to the bearing structure. | 11-12-2015 |
| 20150330224 | BALANCED ROTOR DISC, AND BALANCING METHOD - The invention relates to a rotor disc ( | 11-19-2015 |
| 20150337662 | ROTOR BALANCING - A balancing kit and balancing method is provided for balancing a rotating component, The balancing kit comprises a receptacle and a balancing mass. The balancing mass comprises a pin that may be passed through a corresponding slot in a plate of the receptacle during installation. To complete installation, the balancing mass is rotated so that the pin can no longer pass through the slot, and is instead retained in an installed position in which the pin rests on a lower surface of the plate. The balancing mass can be removed by the reverse process. | 11-26-2015 |
| 20150337663 | SCREW TOOL - A tool and method for inserting an externally threaded object into a threaded receiving hole and removing and externally threaded object from the receiving hole. The tool is provided with an outer body that has a holding portion to hold the externally threaded object during insertion or removal. The holding portion may be a thread that corresponds with the thread of the externally threaded object. The tool also has a tightening body inside the outer body that has an engagement portion for engaging a corresponding engageable portion of the externally threaded body. The tightening body is rotated within the outer body to tighten or loosen the externally threaded body. During insertion or removal, the externally threaded body is securely held by the holding portion of the outer body. | 11-26-2015 |
| 20150345295 | DEVELOPMENTS IN OR RELATING TO ROTOR BALANCING - A method of reducing dynamic imbalance in a bladed rotor assembly by axially adjusting one or more of the blades so as to redistribute mass along the geometric axis of the assembly. The blades may be axially adjusted to form a counterbalancing couple. Additional correction masses may be added for supplemental correction of couple imbalance or residual static imbalance in the bladed rotor assembly. The invention offers a reduction in the weight penalty associated with conventional balancing corrections carried out on the bladed rotor assembly. | 12-03-2015 |
| 20150354360 | BALANCING SCREW, DEVICE AND METHOD FOR A ROTATING PART OF A TURBINE ENGINE - A balancing device for a rotating part of a turbomachine, includes a ferrule pierced with a plurality of ports, a balancing screw passing through each port, each balancing screw including a body and a head, the head of each balancing screw being pierced with a recess, the balancing screws being of at least one first type, the recess of the screws of the first type being formed by a driving recess from which an additional recess extends. | 12-10-2015 |
| 20160090962 | COUNTERWEIGHT SYSTEMS FOR A WIND TURBINE AND METHODS - A counterweight system for a wind turbine is provided. The wind turbine comprises a rotor hub positioned on a wind turbine tower such that the rotor hub is configured to rotate around an axis, the rotor hub comprising one or more mounting surfaces, the counterweight system comprising: The system comprises a beam comprising a connection element adapted to be attached to the mounting surfaces, the beam being provided with a first steering mechanism adapted to control an orientation of the beam with respect to the connection element. Furthermore, the system comprises a counterweight mass coupled to the beam. Moreover, methods for installing blades to a rotor hub of a wind turbine are also provided. | 03-31-2016 |
| 20160102680 | FAN HUB BALANCING STRUCTURE - A fan hub balancing structure includes a hub main body. The hub main body has a top section, a circumferential section extending from the circumference of the top section and a lip section. The lip section is connected with the lower end of the circumferential section. The lip section has at least one residual weight section on the lip section. After the residual weight section is removed from the lip section, a balancing section is formed on the lip section. The balancing structure is able to provide a balancing effect for the hub main body and facilitate the processing of the hub main body. | 04-14-2016 |
| 20160123150 | METHOD OF BALANCING A GAS TURBINE ENGINE ROTOR - A method of balancing a gas turbine engine rotor, including axisymmetrically removing an annular portion of the balancing flange exceeding that required to provide the unbalance correction, and creating the unbalance correction by non-axisymmetrically removing material from the balancing flange. In one embodiment, the configuration of a theoretical notch in the balancing flange that would create the unbalance correction is determined. The unbalance correction is created by removing material from the balancing flange to create a protuberance protruding radially from a remainder of the balancing flange, the protuberance having a height corresponding to the depth of the theoretical notch, a circumferential width corresponding to the arc angle of the theoretical notch, and a circumferential position diametrically opposed to the circumferential position of the theoretical notch. A gas turbine engine rotor is also discussed. | 05-05-2016 |
| 20160138614 | IMPELLER FOR CENTRIFUGAL FAN AND CENTRIFUGAL FAN - There is provided an impeller for a centrifugal fan which rotates around an axis extending from one side to the other side. The impeller includes a main plate, a plurality of blades each having one side portion located at the one side and the other side portion located at the other side, the one side portion being connected to a first surface of the main plate, and a connecting ring which connects the other side portions of the blades. A first circumferential groove to which a first balance weight is attachable is formed in an outer circumferential portion of a second surface of the main plate facing toward the one side. A second circumferential groove to which a second balance weight is attachable is formed in the connecting ring. An annular raised portion is formed on the first surface at a portion corresponding to the first circumferential groove. | 05-19-2016 |
| 20160168996 | REMOVABLE RIVETED BALANCE RING | 06-16-2016 |
| 20160177726 | EXHAUST-GAS TURBOCHARGER | 06-23-2016 |
| 20160186721 | WIND TURBINE BLADE ASSEMBLY - A wind turbine blade assembly includes a rotary shaft, and a plurality of blade units connected to the rotary shaft and angularly spaced apart from each other. Each blade unit includes a grid frame connected to the rotary shaft and formed with a plurality of grid spaces, a plurality of blade panels swingably connected to the grid frame and corresponding in position to the grid spaces, and a plurality of counterweight members respectively disposed on the swing ends of the blade panels. Each counterweight member includes a soft hollow main body and a counterweight fluid accommodated in the main body. | 06-30-2016 |
| 20190145430 | Rotor disk for an exhaust turbocharger, exhaust turbocharger and method for balancing a rotor assembly for an exhaust turbocharger | 05-16-2019 |
