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| Number | Title | Issue Date |
| 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 |
| 7323843 | Method and device for treating signals for detection of stator and rotor errors in magnetic circuits in a synchronous machine It is possible to determine the types and values of stator and rotor errors in magnetic circuits in a synchronous machine by measuring the induced voltage (ui) for the terminals of measurement loops which can capture an image of the induction in the measu... | 01/29/2008 |
| 7222522 | Method for measuring at least one characteristic property of a pneumatic tire for a vehicle wheel A method for measuring at least one characteristic property of a pneumatic tire for a vehicle wheel includes arranging at least one array of deformable sensors along a first direction; making the tire pass at speed over the sensors along a second direction; generati... | 05/29/2007 |
| 7168308 | Methods for detecting, monitoring, and/or controlling behaviour of a tire in motion A system for determining interaction between a tire and a contact surface during movement of a motor vehicle includes at least one first sensor and processing means. The at least one first sensor includes one or more first elongated piezoelectric elements which exte... | 01/30/2007 |
| 7148648 | Controller for controlling actuator device installed on vehicle so as to maintain silence and comfort in vehicle A controller for controlling an actuator device which is installed on a vehicle and operated by a motor. The controller includes: a motor control portion operable to control the motor on the basis of a target value; and a target-value determining portion operable to... | 12/12/2006 |
| 7080436 | Method of manufacturing an axially collapsible driveshaft A method for manufacturing a driveshaft for use in a vehicle drive train system that is axially collapsible in the event of a collision to absorb energy. A workpiece, such as a hollow cylindrical tube, is deformed by hydroforming to provide an axial collapse initiat... | 07/25/2006 |
| 7055379 | Method and apparatus for checking the uniformity of a pneumatic tire In a method and apparatus for checking the uniformity of a pneumatic tire of a vehicle wheel, first and second unbalance measuring operations are performed to determine unbalance vectors of the vehicle wheel, which are ascertained at differing wheel speeds and/or wi... | 06/06/2006 |
| 7053586 | Brushless repulsion motor speed control system A system for controlling the speed of a brushless repulsion motor having a series of switches mounted on a rotating armature for shorting circumferentially spaced armature coils comprising first stationary signaling means and a plurality of rotating detectors for ac... | 05/30/2006 |
| 7050892 | Diagnostic tool security key A diagnostic tool includes a security system which prevents the unauthorized downloading of updated software. In one embodiment, a first external storage device includes a first security signature and is electrically coupled to the diagnostic tool. A second external... | 05/23/2006 |
| 6959593 | System, tire, wheel, vehicle, and method for determining the behavior of a tire in motion A system for determining interaction between a tire and a contact surface during movement of a motor vehicle includes at least one first sensor and processing means. The at least one first sensor includes one or more first elongated piezoelectric elements which exte... | 11/01/2005 |
| 6954685 | Aircraft vehicular propulsion system monitoring device and method Methods and systems for monitoring rotating shaft shafts and couplings in an aircraft propulsion system is described. The measurement system/method provides for accurate and precise monitoring of a rotating shaft flexible coupling in a fixed wing aircraft vehicle pr... | 10/11/2005 |
| 6948781 | Balance weight assembly The present invention relates to a balance weight assembly for a vehicle wheel, including a portion designed to attach and fix the balance weight to the flange edge of a wheel rim and a portion designed to retain a weight made from a high-density material, such as t... | 09/27/2005 |
| 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 |
| 6631640 | Method and apparatus for measuring dynamic balance A method and an apparatus for accurately measuring an initial imbalance deviating from a predetermined imbalance, when the predetermined imbalance is to be left in a body of rotation. In the method and apparatus, data relating to the predetermined imbalan... | 10/14/2003 |
| 6590960 | Computed tomography apparatus with integrated unbalanced mass detection A computed tomography apparatus has a gantry that is rotatable around a rotational axis and a detector permanently disposed relative to the gantry, for determining an unbalanced mass of the gantry and a calculating unit for calculating the location or loc... | 07/08/2003 |
| 6523407 | Apparatus and method for balancing a vehicular driveshaft An apparatus for quickly and efficiently balancing an article includes a pair of supports that are adapted to engage and support the ends of the driveshaft tube and to effect selective rotational and axial movement thereof. A system is provided for genera... | 02/25/2003 |
| 6490540 | Method and apparatus for measuring driveline angles A system measures multiple operational angles of a driveline assembly and compares the signals to each other to determine whether the angles and the respective driveline components are properly balanced. Different types of sensor assemblies can be used to... | 12/03/2002 |
| 6208240 | Misalignment sensor In a disclosed embodiment, a steering axle wheel assembly for a vehicle is provided with a system for actively sensing and alerting a vehicle user of wheel misalignment. The wheel assembly includes an elongated tie rod extending between two wheels and a r... | 03/27/2001 |
| 6155113 | Stirring shaft monitoring comparator In a preferred embodiment, there is an electronic comparator that monitors and exhibits on one or more video displays current information measured and monitored as to physical attributes relating to a revolvably rotating linearly-extending stirring shaft ... | 12/05/2000 |
| 6131454 | Transportable vehicle tester A transportable apparatus for detecting drive line system imbalances in an automotive vehicle includes an angular position and speed sensor located at a position spaced from, but associated with the drive shaft in non-contacting relationship therewith, th... | 10/17/2000 |
| 6027239 | On-board engine trim balance display and interface A display and user interface incorporated into an on-board engine vibration monitoring and trim balance system. The interface consists of an alphanumeric display and a number of push buttons integrally formed with a front panel of the system. The user ope... | 02/22/2000 |
| 6006599 | Method and apparatus for testing tires on a wheel balancing machine In the tire examination method before and after an alteration in the tire pressure a respective interferogram is produced of the tire surface using coherent radiation and the interferogram is converted into a modulo 2π image, which for its part is proces... | 12/28/1999 |
| 5703796 | Driveline alignment apparatus and method An apparatus and method for aligning a driveline in a motor vehicle, including supporting a transmission and a rear axle with the body of the motor vehicle. A driveshaft is supported at a first end with the transmission and supported at a second end with ... | 12/30/1997 |
| 5641904 | Method and apparatus for detecting drive line system imbalance An apparatus for detecting drive line system imbalances in an automotive vehicle includes an angular position and speed sensor located at a preselected position spaced from, but associated with the drive shaft in non-contacting relationship therewith, the... | 06/24/1997 |
| 5544073 | Rotor balancing calculator A portable, hand-held, battery-powered rotor balancing calculator has a data port, which includes a host communications port to down-load set-up data from, and upload collected data to a host computer. A rotation sensor communications port receives data f... | 08/06/1996 |
| 5479821 | Method and apparatus for measuring unbalance of a motor vehicle wheel on a motor vehicle A method and apparatus for measuring unbalance of a vehicle wheel that is freely rotatable and mounted on a motor vehicle. The wheel is rotated during the measuring operation at a measurement speed and a mark on the wheel is sensed to provide accurate inf... | 01/02/1996 |
| 5477728 | Method and apparatus for driving a motor vehicle wheel on a motor vehicle for unbalance measurement thereof A method and apparatus for driving a motor vehicle wheel mounted on a motor vehicle. The wheel is freely rotatable for unbalance measurement thereof a friction wheel driven by an electric motor that is pressed against the tire with varying pressure force.... | 12/26/1995 |
| 5443537 | Method of balancing and aligning wheels on trucks A method of balancing and aligning wheels on trucks which includes the steps of removing the bearing slack from the truck wheels by tightening the bearings; trimming or "trueing" the tires of the elevated drive tandem to the center of each axle as the cen... | 08/22/1995 |
| 5431049 | Vehicle driveline balancing A method and system for balancing an automotive vehicle driveline (10) after it has been installed into a vehicle (8). An impact hammer and a system analyzer (36) are used to determine a frequency response function at each end of a driveshaft (16). From t... | 07/11/1995 |
| 5277063 | Single plane trim balancing A method for balancing a rotor of an alternator in a diesel-electric locomotive in which the rotor is drivingly coupled to a power output shaft of a diesel engine. A speed sensor and a vibration sensor are coupled to the rotor for providing output signals... | 01/11/1994 |
| 5269186 | Apparatus and method for detecting rotational imbalance of vehicle roadwheels An apparatus for detecting dynamic rotational imbalance of vehicle roadwheel assemblies includes a force measurement sensor for sensing a combined force exerted between the surface upon which the vehicle is traveling and the vehicle sprung mass and furthe... | 12/14/1993 |
| 5195369 | Apparatus for determining the unbalance of wheels mounted on a vehicle An apparatus for determining the unbalance of wheels mounted on a vehicle comprises at least one measuring rack for supporting a vehicle wheel, a sensor provided in the measuring rack for sensing vibrations caused by the unbalance and for issuing a sensor... | 03/23/1993 |
| 5197010 | Apparatus for continuously actively balancing rotors Apparatus for continuously actively balancing rotors by controlling the mass-distribution of a rotor (24) relative to an axis-of-rotation (27) about which the rotor rotates in a stator (26) is disclosed. The mass-distribution of the rotor is adjustable vi... | 03/23/1993 |
| 5058428 | Process for the determination of unbalance A method and apparatus is provided for determining the unbalance of the wheels of a motor vehicle under test by means of unbalance measuring equipment. Such equipment is operated with a d.c. voltage supply in the form of the battery of the vehicle under t... | 10/22/1991 |
| 4959991 | Vehicle chassis support A support for mounting a vehicle chassis on an alignment bench. The support has a threaded bushing telescopically received in a sleeve fixed to a carrier arm. In use, the axial length of the bushing and sleeve assembly can be adjusted so that when receive... | 10/02/1990 |
| 4956998 | Apparatus for driving a motor vehicle wheel for determining unbalance thereof An apparatus for driving a motor vehicle wheel while it is fitted to the motor vehicle for detecting unbalance thereof comprises a friction wheel which is driven by a drive motor and which is pressed against the motor vehicle wheel for driving same at a s... | 09/18/1990 |
| 4926341 | Method and apparatus for calibration of balancing unit An unbalance measuring procedure and circuitry therefor employs correction weights for the compensation of unbalance of a rotating component under test. After a measuring run, stored and displayed unbalance information is compensated by a compensating wei... | 05/15/1990 |
| 4907452 | System for detecting rotational imbalance of vehicle roadwheels A system for detecting dynamic rotational imbalance of vehicle roadwheels includes a force measurement sensor for sensing the force required to steer the roadwheel and further includes a device for generating a force signal corresponding to the sensed for... | 03/13/1990 |
| 4882932 | Lift with transducer for balancing tires on a vehicle A lifting unit with an incorporated piezoelectric transducer comprises an extendable trolley (1-4) with a frontwardly tapered plan profile and is upperly provided with a flat vertical compass structure (5) which is symmetrically disposed about the main ax... | 11/28/1989 |
| 4864858 | Wheel unbalance correction method and wheel unbalance detecting apparatus A wheel attached to a vehicle body via a suspension mechanism including an unsprung member is placed on and rotated by a rotating drum. A phase detector detects the rotational phase of the rotating wheel. A support table positioned adjacent the rotating d... | 09/12/1989 |
