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| Number | Title | Issue Date |
| 8186955 | Rotating machine balancing member assembly including multiple interlocking balancing members A rotating machine includes a stationary member and a rotating member moveable relative to the stationary member. The rotating member includes at least one balancing member assembly receiving portion having a plurality of internal threads. The rotating machine also ... | 05/29/2012 |
| 8123484 | Torsional dynamic damper for a wind turbine and method of using same A wind turbine includes a tower, a nacelle located adjacent a top of the tower, a rotor coupled to the nacelle, and a dynamic vibration damper coupled to the tower and configured to dampen vibrations induced in the tower in a torsional direction while negligibly eff... | 02/28/2012 |
| 8066486 | Method and apparatus for vibration-based automatic condition monitoring of a wind turbine Method and apparatus for vibration-based automatic condition monitoring of a wind turbine, comprising the steps of: determining a set of vibration measurement values of the wind turbine; calculating a frequency spectrum of the set of vibration measurement values; ca... | 11/29/2011 |
| 8021115 | Active force generation system for minimizing vibration in a rotating system A method and device for reducing vibratory noise in a system with an integral rotating member includes independently operable drive systems for controlling the angular velocity of at least two independently rotatable masses. Control signals manipulate the drive syst... | 09/20/2011 |
| 7753651 | Balancing flyweight, rotor disk equipped therewith, rotor and aircraft engine comprising them The balancing flyweight of a turbomachine rotor includes two pyramid shaped end parts each one having a base and an apex, and an intermediate part which connects the two bases of the end parts together. The two apexes are aligned on a longitudinal axis. The two end ... | 07/13/2010 |
| 7581929 | Rotational airfoil balance system A balance system for a rotational airfoil assembly includes a bulkhead, an elongated member, a support member and at least one balance weight. The elongated member extends through the bulkhead along a bore toward an airfoil tip segment of the airfoil assembly. The b... | 09/01/2009 |
| 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 |
| 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 |
| 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 |
| 7360996 | Wind blade assembly and method for damping load or strain The transducers are incorporated in or laminated to wind blades and electrically connected to a self-powered electrical circuit. The transducers in combination with the self-powered electrical circuit improve the wind blades' response to changing wind conditions by ... | 04/22/2008 |
| 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 |
| 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 |
| 7300256 | Damping arrangement for a blade of an axial turbine A damping arrangement for a blade (20) of an axial turbine, in particular a gas turbine, includes a damping element (17) which is arranged in a recess (16) in the blade aerofoil (10) of the blade (20) and frictionally dampens the v... | 11/27/2007 |
| 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 |
| 7270517 | Turbine blade with vibration damper A blade assembly (10) for a turbine (16) including a vibration damper (12) having a mounting base (38) sealingly disposed at an inlet end (24) of a cooling fluid passageway (22) within the root section (20) of the bla... | 09/18/2007 |
| 7252477 | Rotating blade body A rotating blade body is provided that can restrain vibrations of rotating blades effectively. The rotating blade body comprises a rotor disc, a plurality of rotating blades being assembled so as to extend from the outer circumference of the rotor disc in a radial p... | 08/07/2007 |
| 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 |
| 7229252 | Rotor assembly retaining apparatus A rotor stage (13, 14, 15, 17, 18, 19) of a gas turbine engine (10) comprises an annular retaining plate (38) capable of preventing axial movement of blades (30). The retaining plate (38) is secured to the disc (32) via a ba... | 06/12/2007 |
| 7220104 | Vibration reduction system for a wind turbine A wind turbine includes a tower, a nacelle supported at an upper end of a tower, a rotor having at least one blade and being arranged at the nacelle, and a vibration load reduction system disposed at either the tower or the nacelle. The vibration load reduction syst... | 05/22/2007 |
| 7214034 | Control of leak zone under blade platform A system for controlling a leakage zone under platforms of blades of a turbomachine blade-wheel by liners having edges that flare radially inwards, and that are disposed in inter-blade cavities defined by the platforms, by upstream and downstream radial walls of the... | 05/08/2007 |
| 7189061 | Cooling fan for vehicles A cooling fan having a circumferential ring. In ordinary fans of this type, deformation of fan blades causes the ring to buckle inward at locations between the blades. In one form of the invention, mass is added to the ring between the blades to counteract the buckl... | 03/13/2007 |
| 7153094 | Rotor system vibration absorber A rotor system vibration absorber for use with a helicopter of other rotorcraft is disclosed in which spring forces are provided by a plurality of elongated rods arranged in a selected pattern. The rods are coupled at one end to a fixed base that is coupled to a rot... | 12/26/2006 |
| 7134731 | Balance weight cartridge with enclosed balance media A weight comprising a cartridge having at least one interior chamber, the interior chamber at least partially filled with a flowable balance media, and wherein the cartridge is attached to the wheel in a position oblique to the radial centerline of a tire/wheel asse... | 11/14/2006 |
| 7132760 | Wind turbine device A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal... | 11/07/2006 |
| 7118343 | Trailing edge adjustable weight system for helicopter main rotor blades A system of adjustable balancing weights is provided for a helicopter main rotor blade. The trailing edge of the rotor blade is formed with a plurality of recesses that each receive an aerodynamically shaped weight to adjust and balance the weight of the rotor blade... | 10/10/2006 |
| 7105939 | Electrical generator having an oscillator containing a freely moving internal element to improve generator effectiveness An apparatus and method for providing electrical energy to an electrical device by deriving the electrical energy from motion of the device. In one embodiment, the inventive apparatus includes a novel kinetic electrical power generator (KEPG) consisting of an invent... | 09/12/2006 |
| 7102850 | Balancing a rotatable body in multiple planes using invertible balancing plugs Multiple balancing plugs (114) preferably have a common length and a common offset center of gravity (130) in the length dimension for providing dual plane balancing of a rotatable body (100). The rotatable body (100) includes a plurality... | 09/05/2006 |
| 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 |
| 7063515 | Radial fan An air compressor includes a valve plate with cooling fins and a piston also having cooling fins. The valve plate includes an integral and angled valve plate outlet. The angling of the valve plate outlet reduces turbulence and improves compressed air flow. The pump ... | 06/20/2006 |
| 7065469 | Manufacturing apparatus and method for predicting life of a manufacturing apparatus which uses a rotary machine A manufacturing apparatus which includes a rotary machine, includes: a plurality of accelerometers configured to measure diagnosis time series data attached to the rotary machine at locations where variations of the rotary machine are different; a frequency analysis... | 06/20/2006 |
| 7040859 | Wind turbine A wind turbine operable as either a vertical axis wind turbine or a horizontal axis wind turbine is disclosed. ... | 05/09/2006 |
| 7014417 | Auto suction hybrid pump A hybrid pump (1) with a housing (2) comprising at least one suction port (10) and at least one pressure port (11). A rotor (5) is eccentrically arranged in the housing chamber (3) which is substantially enclosed in a circul... | 03/21/2006 |
| 6947253 | Method for balancing a rotating assembly using eccentric rings A method for balancing a spindle assembly for compensating for dynamic imbalance of the spindle assembly. The method uses a plurality of adjustable eccentric rings for dynamically balancing the spindle assembly. The plurality of eccentric rings are preassembled with... | 09/20/2005 |
| 6935167 | Harmonic cantilevers and imaging methods for atomic force microscopy A harmonic cantilever for use in a tapping-mode atomic force microscope includes a cantilever arm and a probe tip. The cantilever arm has a shape selected to tune the fundamental resonance frequency or a resonance frequency of a selected higher order mode so that th... | 08/30/2005 |
| 6931861 | Anti-score plates A gas turbine engine flanged shaft (120) is provided with a plurality of anti-score plates (6a, 6b) each of which has two openings which are aligned with corresponding apertures on the flange. Bolts (4) pass through the open... | 08/23/2005 |
| 6932575 | Blade damper A turbomachine blade damper has a damper member with first and second damping surfaces for respectively engaging first and second surfaces of adjacent first and second blades. The damper has a seal having a first portion engaged in the damper member to resist relati... | 08/23/2005 |
| 6920794 | Method and apparatus for rotary machine vibration control A vibration control system for a rotary machine having a rotor, includes a sensor disposed within the rotary machine for sensing vibration of the rotor, a vibration damping device disposed within the rotary machine for imparting a reaction force to the rotor, and a ... | 07/26/2005 |
| 6908284 | Fan attachment with dynamic out-of-balance equalization The invention is based on an axial fan with a hub region (4, 27) for connecting the axial fan with a driven shaft (20) of an electrical drive (21), whereby the axial fan is statically balanced by means of a balancing weight (26). A flexur... | 06/21/2005 |
| 6901821 | Stator damper anti-rotation assembly An assembly for preventing rotation of a damper in a stator system includes a slot in the damper and a block for engaging the slot to prevent rotation of the damper. The block is positioned within a groove located at a mid span portion of an inner air seal. ... | 06/07/2005 |
| 6827551 | Self-tuning impact damper for rotating blades A self-tuning impact damper is disclosed that absorbs and dissipates vibration energy in the blades of rotors in compressors and/or turbines thereby dramatically extending their service life and operational readiness. The self-tuning impact damper uses the rotor spe... | 12/07/2004 |
