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| Number | Title | Issue Date |
| 8186954 | Gas turbine engine rotor and balance weight therefor A balance weight for a rotor includes: (a) an arcuate body including a front wall and a rear wall interconnected by an end wall, the front, rear, and end walls collectively defining a generally U-shaped cross-sectional shape; and (b) a projection extending outwardly... | 05/29/2012 |
| 8147199 | Pump and balancing cover thereof A balancing cover connected with a rotor structure includes a plate, a plurality of blades and at least one balancing element. A central portion of the plate has an opening. Each blade has one end connected with the plate and mounted on a circumference of the openin... | 04/03/2012 |
| 8087897 | 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 e... | 01/03/2012 |
| 8070445 | Balancing system for turbomachine rotor The present invention relates to a turbomachine rotor balancing system comprising a balancing flange (52) provided with through-passageways (78), the system further comprising balance weights (54) each mounted fixedly on the flange (52) b... | 12/06/2011 |
| 8025483 | Balancing system for turbomachine rotor A turbomachine rotor balancing system including a balancing flange provided with through-passageways, and balance weights mounted fixedly on the balancing flange by at least one screw/nut assembly passing through one of the passageways is disclosed. For each of the ... | 09/27/2011 |
| 7927074 | Fan rotor A fan rotor includes a hub (10), a plurality of blades (20) radially disposed around the hub, and a magnet (30) located in an inner side of the hub. The hub includes a top wall (12) and a sidewall (14) surrounding the top wall. A p... | 04/19/2011 |
| 7841832 | Fan for generating an air flow A weight adjustment portion is formed at an upper end of a hub to project radially inward. An approximately U-shaped balance clip is attached to the weight adjustment portion. A gap to be constantly ensured is formed axially between the weight adjustment portion and... | 11/30/2010 |
| 7789627 | Centrifugal impeller A centrifugal impeller employed in a centrifugal machine, includes a main body, the main body generally being conical and defining a shaft bore in a center portion thereof; and a plurality of blade groups evenly arranged surrounding the shaft bore in sequence, each ... | 09/07/2010 |
| 7717679 | Structure of balancing fan A structure of a balancing fan is disclosed. The fan comprises a hub and a rotation balancing unit. The hub comprises a top portion and a ring portion disposed around the top portion. A plurality of blades extends from the hub. The rotation balancing unit is dispose... | 05/18/2010 |
| 7497662 | Methods and systems for assembling rotatable machines A method of ordering blades in a rotatable machine that includes a plurality of blades that extend radially outwardly from a rotor is provided. The method includes receiving at least one geometric parameter measurement of each blade in a row of blades, determining a... | 03/03/2009 |
| 7491031 | Balancing device of a turbomachine engine A device for balancing a turbomachine rotor includes at least one counterweight fitted to the rotor, wherein the counterweight includes two radial bearing surfaces oriented in two opposite radial directions, the said surfaces interacting with two radial bearing surf... | 02/17/2009 |
| 7416389 | Methods and apparatus for assembling rotatable machines Methods and systems for ordering blades in a rotatable machine is provided. The method includes receiving at least one geometric parameter measurement of each blade in a row of blades, determining a root sum squared value of a difference of a selected one of the rec... | 08/26/2008 |
| 7377749 | Device for balancing a rotating part, in particular a turbojet rotor A device for balancing a rotating part, in particular a turbine rotor in a turbomachine such as a turbojet or the like, the device comprising at least one balance weight comprising engagement means for engaging it on an annular flange of the part, and locking means ... | 05/27/2008 |
| 7370529 | Method for balancing an object having multiple radial projections A method of balancing a movable rotating object having multiple radial projections, such as a ceiling fan, the method comprising the steps of: attaching to a non-rotating portion of the object a source that emits a focused light, directing the focused light at a tar... | 05/13/2008 |
| 7371042 | Method and apparatus for balancing gas turbine engines A method, system, and balanced rotating assembly are provided for field balancing an assembly including a power turbine. The method, system and assembly includes coupling the power turbine to a load, identifying a first balancing plane that is aft of the power turbi... | 05/13/2008 |
| 7364402 | Turbine module for a gas turbine engine A turbine module for a gas turbine engine includes at least one turbine disk and a disk-shaped component mounted on the turbine disk upstream relative to the gas flow. The module can be assembled to the compressor of the engine, wherein the component is preassembled... | 04/29/2008 |
| 7347672 | Rotor disk balancing device, disk fitted with such a device and rotor with such a disk A rotor disc includes a rim and a balancing device, which includes housings formed in the rim, and balancing masses housed in at least some of the housings. ... | 03/25/2008 |
| 7309211 | Balancing method A method of balancing a rotor, where the rotor comprises a plurality of holes, comprises the steps of measuring an imbalance of the rotor, identifying at least one characteristic dimension associated with at least one hole, identifying a change to the or each charac... | 12/18/2007 |
| 7305905 | Rotatable member with an annular groove for dynamic balancing during rotation A rotatable member is adapted for dynamic balancing by the addition of balancing weights in the form of high speed projectiles fired at the member during rotation in timed relationship with the rotation of the member so as to impact the member at specific circumaxia... | 12/11/2007 |
| 7306432 | Apparatus and method of balancing a shaft An apparatus for balancing a shaft of an aircraft engine preferably includes a nose cone and the use of standard fasteners. The nose cone is adapted to cooperate with at least one standard fastener to retain the standard fastener to the nose cone to rotationally bal... | 12/11/2007 |
| 7303377 | Apparatus and method of balancing a shaft An apparatus for balancing a shaft of an aircraft engine preferably includes a plate and the use of standard fasteners. The plate provides mounting for a nose cone, and the balancing apparatus may be accessed from the front of the assembled engine. ... | 12/04/2007 |
| 7300244 | Cooling fan noise reduction apparatus, systems, and methods Apparatus, systems, and methods may operate to distribute acoustic spectral energy associated with a primary blade-passing frequency tonal component of fan noise and with harmonics thereof. The energy may be spectrally distributed by irregularly spacing a plurality ... | 11/27/2007 |
| 7296976 | Dual counterweight balancing system A system for balancing a rotatable gas turbine engine component. The system includes two balance rings that are coupled to the component by mating splines on the respective item. Each of the rings has a mass asymmetry that is indexable relative to the primary compon... | 11/20/2007 |
| 7293956 | Rolled ring air baffle for a gas turbine engine rotating cavity An annular air baffle for use in a cavity of an annular rotatable gas turbine engine component includes an annular split baffle ring having a plurality of circumferentially spaced apart and radially inwardly extending intermediate dams circumferentially disposed bet... | 11/13/2007 |
| 7287958 | Methods and apparatus for assembling rotatable machines A method, rotor assembly, and apparatus for ordering blades in a rotatable machine is provided. The rotor assembly includes a disk including a plurality of circumferentially-spaced blade root slots defined therein, and a plurality of blades, each blade including a r... | 10/30/2007 |
| 7286643 | X-ray tube target balancing features An x-ray assembly is provided comprising a target shaft and an x-ray target element mounted to the target shaft. A circumferential feature is formed in the x-ray target element. At least one weight element is adapted to be securable in a plurality of positions withi... | 10/23/2007 |
| 7281896 | Fan and impeller thereof An impeller includes a hub and at least one blade. In this case, the hub has at least one balancing portion disposed on hub and arranged with respect to a center of the hub. The balancing portion has at least one corner. The blades are disposed around the hub. In ad... | 10/16/2007 |
| 7234916 | Method and apparatus for balancing gas turbine engines A method and apparatus is provided for field balancing an assembly including a power turbine. The method includes coupling the power turbine to a load, identifying a first balancing plane that is aft of the power turbine, and identifying a second balancing plane tha... | 06/26/2007 |
| 7165941 | Method and apparatus for use in construction of wind power installation and wind power installation employing same One aspect of the present invention concerns a process for mounting rotor blades to a rotor hub of a wind power installation in situ. In order to avoid high torques in the mechanical train of the wind power installation in the operation of mounting the rotor blades,... | 01/23/2007 |
| 7160083 | Method and apparatus for wind turbine rotor load control Vertical and horizontal wind shears, yaw misalignment and/or turbulence act together to produce asymmetric loading across a wind turbine rotor. The resultant load produces bending moments in the blades that are reacted through the hub and subsequently to the low-spe... | 01/09/2007 |
| 7121368 | Bi-directional automotive cooling fan The instant invention pertains to a road vehicle's axial flow cooling fan which normally draws cooling air from in front of the vehicle and blows it into the engine bay. The instant invention includes a control circuit for the fan motor that provides variable speed ... | 10/17/2006 |
| 7118339 | Methods and apparatus for reduction of asymmetric rotor loads in wind turbines A method for reducing load and providing yaw alignment in a wind turbine includes measuring displacements or moments resulting from asymmetric loads on the wind turbine. These measured displacements or moments are used to determine a pitch for each rotor blade to re... | 10/10/2006 |
| 7108480 | Method and apparatus for balancing turbine rotors A method facilitates balancing a gas turbine rotor. The method includes providing a gas turbine rotor including a plurality of turbine blades, wherein at least one turbine blade includes a blade tip shroud that includes a leading edge and a trailing edge that is opp... | 09/19/2006 |
| 7097427 | Helicopter main rotor blade balance weight retention assembly A helicopter main rotor blade balance weight retention system and assembly having a base plate (105), at least one support post (107) integral with the base plate and extending out perpendicularly from the base plate, a plurality of balance weights ( | 08/29/2006 |
| 7090464 | Methods and apparatus for assembling rotatable machines A method and apparatus for ordering blades in a rotatable machine is provided. The machine includes a plurality of blades that extend radially outwardly from a rotor. The method includes determining a moment weight of each blade in a row of blades, determining a geo... | 08/15/2006 |
| 7063507 | Balance adjusted fan A balance adjusted fan mainly includes a hub, a shaft and a plurality of blades. The hub has a ring-wall and a top wall, and the shaft is connected to the top wall. The ring-wall has a plurality of socket holes that can be formed on the top edge, the bottom edge or ... | 06/20/2006 |
| 7061758 | Heat-dissipating fan device A fan impeller of a heat-dissipating fan device is mounted in a receiving space of a fan housing, and includes coupling ribs that extend radially and outwardly from an outer surrounding surface of a hub cap and that are spaced apart angularly from each other, a smal... | 06/13/2006 |
| 7040866 | System for retaining an annular plate against a radial face of a disk The system retains a plate against a disk presenting in its radial face an annular recess defined by a plurality of walls, one of which is formed by a face of a flange, said plate presenting an annular base pressing against the radially outer wall of the recess and ... | 05/09/2006 |
| 7025570 | Axial flow fan assembly An axial flow fan assembly is provided to prevent the backflow of fluid passing therethrough. The axial flow fan assembly includes a mounting panel having a through-hole to allow fluid flow, and an axial flow fan having a plurality of fan blades rotatably installed ... | 04/11/2006 |
| 7004724 | Method and apparatus for wind turbine rotor load control based on shaft radial displacement Vertical and horizontal wind shears, yaw misalignment and/or turbulence act together to produce asymmetric loading across a wind turbine rotor. The resultant load produces bending moments in the blades that are reacted through the hub and subsequently to the main sh... | 02/28/2006 |
