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| Number | Title | Issue Date |
| 8079257 | Method and apparatus for balancing an electrically assisted turbocharger rotor A rotation is corrected by rotationally driving a supercharger rotor (a turbine impeller (2), a compressor impeller (6) and a shaft (12)) by an electric motor (18) in a state of detaching a turbine housing (4) and a compressor hous... | 12/20/2011 |
| 8056410 | Method for predicting imbalance of a propeller shaft assembly A method for determining an imbalance of a propeller shaft assembly can include establishing balancing planes relative to certain areas of the propeller shaft assembly and identifying each component of the propeller shaft assembly that could have a potential imbalan... | 11/15/2011 |
| 7832270 | Apparatus for measuring rotational imbalance of a turbocharger core assembly Apparatus for measuring rotational imbalance of a turbocharger core assembly, comprising a base frame (30) having a housing (31) in the form of an exhaust duct. Attached by leaf springs (33) to the housing (31) is a support part (35 | 11/16/2010 |
| 7775107 | Measuring rotor imbalance via blade clearance sensors A system and method can be utilized to determine an out of balance condition of a rotor having a plurality of blades. The system monitors a clearance between the blades and an associated housing. By looking at a center of that clearance information, a determination ... | 08/17/2010 |
| 7716982 | Propeller tuner assembly One embodiment of a propeller tuner assembly formed in accordance with the present disclosure includes a frame and a bearing assembly having a coupler adapted to selectively couple a propeller to the frame. The coupler is selectively movable from a first position wh... | 05/18/2010 |
| 7658107 | Rotatably supporting device for correcting balance of rotating body A rotatably supporting device for correcting balance of a rotating body includes a journal supporting part having a mandrel that rotatably supports the rotating body in a floating state about a vertical axis, a thrust supporting part that is provided at a lower end ... | 02/09/2010 |
| 7565838 | Propeller tuner assembly One embodiment of a propeller tuner assembly (10) formed in accordance with the present disclosure includes a frame (12) and a bearing assembly (64) having a coupler (90) adapted to selectively couple a propeller (20) to the frame ... | 07/28/2009 |
| 7415878 | Ball bearing turbocharger balancer An exemplary method for balancing a rotating assembly of a turbocharger, where the rotating assembly includes a shaft rotatably supported by a bearing cartridge, includes loading the rotating assembly to introduce a tilt between the rotational axis of an inner race ... | 08/26/2008 |
| 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 |
| 7365446 | Wind power plant having power module mounted on tower foundation and method for use in constructing same The invention relates to a method for constructing a wind energy plant and to a wind energy plant as such. An aim of one aspect of the invention is to provide a method for constructing wind energy plants at lower expenses and more rapidly. According to one aspect, a... | 04/29/2008 |
| 7234350 | Unbalance measuring apparatus A bearing 41 of a support portion 4 for rotatably supporting a shaft 11 of a rotating body 10 to be measured with respect to the magnitude of unbalance thereof is formed into a hollow U-shape and has formed therein an injection port 41... | 06/26/2007 |
| 7225062 | Device for indicating the vibration level of a vehicle A device for indicating at least a first vibration level VIB1 derived from a first acceleration signal γ1 includes: first analysis element FT1 for resolving the first acceleration signal γ1 into a plur... | 05/29/2007 |
| 7069654 | Rotor balancing A method of balancing a rotor (10), the said method comprising the steps of determining the position of the center of mass of a rotor (10) to be balanced prior to the rotor (10) being machined to its final dimensions, and machining the rotor ( | 07/04/2006 |
| 7011497 | Shaft/hub unit for wind turbine rotor A rotor shaft/hub unit for a wind energy plant with a rotor shaft provided with a rotor bearing seat which is connected to a rotor hub provided with a blade or blade bearing connection, the rotor hub and rotor shaft are manufactured in one piece from bonded fiber fa... | 03/14/2006 |
| 6940186 | Wind turbine having sensor elements mounted on rotor blades The invention relates to a wind power plant with a tower, a rotor having at least one rotor blade being substantially radially distant with respect to a rotor axis and being rotatably supported with respect to a substantially horizontal rotation axis in a portion at... | 09/06/2005 |
| 6909948 | Accelerometer configuration The present invention provides a system and method for using the external accelerometer in an aircraft engine configuration as a backup accelerometer, in the event the internally located production accelerometer fails. The sensor location of the external acceleromet... | 06/21/2005 |
| 5671051 | Helicopter blade tracking system A helicopter blade tracking system including an apparatus and method having a self-contained light unit on each blade; each light unit being of similar construction and matched in size and weight. Rings of light formed by the light units during blade rota... | 09/23/1997 |
| 5610332 | Self piloting balance arbor A self piloting balance arbor for use in the dynamic balancing of gas turbine engine components having shafts extending therefrom. The arbor includes a cylindrical sleeve for receiving the shaft, and an annular flange at one end. A conical compliant membe... | 03/11/1997 |
| 5475622 | Method and apparatus for balancing helicopter rotor blades The rotor blades of a helicopter are balanced both in the chordal direction and in the spanwise direction in a static balancing assembly. The assembly includes a support surface on which there are four weighing scales. The scales are positioned in close p... | 12/12/1995 |
| 5219454 | Method and apparatus for balancing wind turbine rotors A method for balancing the rotor of a wind turbine and a balancing weight. The weight is formed of a piece of steel or other material of sufficient weight bent in an L shape with holes that allow it to be bolted onto a flange at the root of the wind turbi... | 06/15/1993 |
| 5140856 | In situ balancing of wind turbines A slowly turning rotating mass, such as a wind turbine rotor, is balanced in situ by measuring the magnitude of a phenomenon, such as acceleration, created by rotor unbalance at a location on a mass support shaft which is close to the mass. The measuremen... | 08/25/1992 |
| 4991437 | Airfoil balancer The invention is a method and device for precisely balancing the mass and center of gravity of airfoils, one pair at a time. Airfoils are clamped between grooved clamps having a central pin, and their tip-to-tip and root-to-root moments are balanced. Thus... | 02/12/1991 |
| 4976147 | Device for measuring dynamic balance of a rotor A device for measuring dynamic balance of a rotor including a shaft to which an impeller is secured at its one end and which has a neck portion adjacent to the impeller so that the shaft may be rotatably supported by a bearing member at the neck portion. ... | 12/11/1990 |
| 4971641 | Method of making counterrotating aircraft propeller blades An aircraft propeller blade is constructed by forming two shells of composite material laminates and bonding the two shells to a metallic spar with foam filler pieces interposed between the shells at desired locations. The blade is then balanced radially ... | 11/20/1990 |
| 4937758 | Method and apparatus for reducing vibration over the full operating range of a rotor and a host device Disclosed is a system and method for minimizing vibration over the full operating range of a rotor of an apparatus. The system includes a transducer or an array of transducers for resolving up to six degrees of freedom of motion of a rotor support structu... | 06/26/1990 |
| 4879792 | Method of balancing rotors Given limitations on potential locations, weight sizes and amount of weights all possible applied unbalance magnitudes and angles are calculated after determining the initial unbalance magnitude and angle of the rotor this result is vector summed with all... | 11/14/1989 |
| 4716761 | Method and jig for dynamically balancing an assembly of the jig and rotor A method of dynamically balancing an assembly of a metal jig and a ceramic rotor attached thereto, the ceramic rotor having a shaft portion, and the metal jig having at its one axial end a fixing hole, comprising the steps of: inserting the shaft portion ... | 01/05/1988 |
| 4628733 | Method and apparatus for balancing a motor-fan system A method and apparatus for balancing of a motor armature and fan coupled thereto is disclosed. The apparatus includes a pair of spaced end brackets for supporting an armature of the motor and the fan for rotary movement. At least one motor bracket is coup... | 12/16/1986 |
| 4586225 | Apparatus for the transfer of a complete turbine module from a balancing machine to an engine and vice versa, and method for operating the said apparatus Apparatus for the transfer of a module, the module including an outer casing in which is held the stator stage and a turbine rotor constituted by disks supporting blade rows, the disks being held by tie bolts, the apparatus having a holding device of the ... | 05/06/1986 |
| 4583862 | Optical position and orientation sensing systems Orientation and/or position of a first body, such as the inboard end 42 of a helicopter blade 21, with respect to a second body, such as a rotor hub arm 36, is sensed by determining the position of the images 93, 95-97, of light from sources 80, 81 passed... | 04/22/1986 |
| 4573355 | Device for the determination of the unbalance of propellers A propeller 12 is supported by means of a propeller accommodation 10 comprising a fixing flange on a tubular hollow bending spring 16. A tubular transmitting member 24 coaxial to the hollow bending spring 16, is affixed to the propeller accommodation 10. ... | 03/04/1986 |
| 4531408 | Control of rotor blade stroboscopic display The invention concerns method and apparatus to obtain accurate tracking of rotor blades, as for example helicopter rotor blades, despite the existence of conditions transiently altering rotor angular velocity.... | 07/30/1985 |
| 4530239 | Universal balance plate A universal balancing plate is presented for balance of rotational parts. The plate is an aluminum plate which is webbed for strength and hard coated for wear. There are five slots in radial locations in which five steel details slide on rotary screws. Th... | 07/23/1985 |
| 4513619 | Testing the balance of a rotatable member Asymmetries of rotatable members such as aircraft propellers can be balanced out by the careful addition of counterweights at proper positions on the members. An accelerometer coupled to the mounting of an unbalanced rotating member produces a signal cont... | 04/30/1985 |
| 4489605 | Balancing machine for large rotatable parts A machine for balancing large rotatable parts such as marine propellers in the plane of rotation. A swing assembly hangs from a support assembly such as two spaced posts on a stand by means of two or more thin metal sheets which extend from the support as... | 12/25/1984 |
| 4465367 | Process and device for measuring and adjusting out-of-track distances of helicopter rotor blades An apparatus and procedure for measuring and regulating the relative vertical displacement of helicopter blades from a rotational plane, comprising a stroboscopic illuminating means, intended to be directed across a reflective tape placed at the extremity... | 08/14/1984 |
| 4372157 | Aerodynamic data collection procedure An improved procedure for collecting experimental data reflecting the behavior of a time varying aerodynamic parameter at an airfoil in a cascade of airfoils vibrating harmonically in a fluid stream including the steps of vibrating the center airfoil of t... | 02/08/1983 |
| 4305292 | Methods and apparatus for balancing ceiling fan blades to improve their aerodynamic performance Method and apparatus for use in balancing the blades of ceiling fans, wherein the pitch angles of the blades and the dihedral angles of the blades are measured and corrected, if necessary, by use of a beam of light reflected from a mirror temporarily flus... | 12/15/1981 |
| 4112774 | Aircraft rotor out-of-track correction method and apparatus Vibration of a bladed rotor is reduced by a method that includes: (a) rotating the rotor at a selected power level, at which vibration is produced, (b) detecting an out-of-track condition of a blade being rotated at that power level.... | 09/12/1978 |
| 4109549 | Dynamic balancer for rotating bodies and method of manufacturing same A rotating mechanism such as a model aircraft propeller shaft is balanced by a dynamic balancing apparatus comprising a disc rotating with the shaft and a stainless steel O-ring partly filled with mercury lodged in an undercut groove in the face of the di... | 08/29/1978 |
