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| Number | Title | Issue Date |
| 8074527 | Monitoring system for a hybrid drive The invention relates to a method for the continuous torque monitoring of a hybrid drive composed of an internal combustion engine with an engine control unit and an inherently safe electric drive with a control unit, wherein a permissible total torque is compared w... | 12/13/2011 |
| 7707900 | Torque detecting device having magnetic shield for shielding magnetic noise A magnetic shield made of magnetic material in the shape of a thin cylinder is externally fitted and fixed on a cylindrical mold member holding magnetic flux collecting rings so that it has extended sections with appropriate length on both sides in the axial directi... | 05/04/2010 |
| 7654158 | Real time torque system Apparatus and methods for measuring in-situ applied torque in tubular operations. A torque cylinder has a first end and a second end. A torque rod is at least partially contained in the torque cylinder and is coupled to the first end of the torque cylinder. The torq... | 02/02/2010 |
| 7415896 | Capacitive force and angle sensor The invention relates to a force and angle sensor for measuring the angle of rotation of a shaft (3) and a force exerted on a torsion rod (303), which interconnects two shaft parts (32, 33) of the shaft (3). In a housing (2), throu... | 08/26/2008 |
| 7362066 | Overload protection system An overload protection system and method of protecting a drive unit includes a torque arm assembly mounted to a fixture and a gear reducer. The reducer includes a bracket mounted to an axle of the reducer which is positioned adjacent to a measuring device. The torqu... | 04/22/2008 |
| 7339344 | Self tuning method and apparatus for permanent magnet sensorless control A plurality of parameters of a Permanent Magnet Synchronous Motor (PMSM) is determined by a motor controller for differentiating between a plurality of PMSMs. This is achieved by first applying regulated DC motor currents at a commanded fixed rotor angle and measuri... | 03/04/2008 |
| 7334606 | Valve tester suspension enhancements A valve tester assembly is disclosed that includes an articulated arm assembly having a first end and a second end, with the second end of the articulated arm assembly being movable away from and toward the first end such that when the first end of the articulated a... | 02/26/2008 |
| 7318589 | Sealing device and rotation detector A pulser ring and a second seal ring are separately formed. When a multipolar magnetic rotor of the pulser ring is bonded to an outer circumferential face of an outer cylindrical portion of an annular core portion, the multipolar magnetic rotor is opposed to a magne... | 01/15/2008 |
| 7299708 | Rotor angle estimation for permanent magnet synchronous motor drive A method of determining a rotor angle in a drive control for a motor, comprising the steps of (a) determining a rotor magnetic flux in the motor; (b) estimating the rotor angle on the basis of the rotor magnetic flux; and (c) correcting the estimated rotor angle on ... | 11/27/2007 |
| 7287541 | Method, apparatus and system for controlling fluid flow A system, apparatus and method of controlling the flow of a fluid are provided. In accordance with one embodiment of the present invention, a flow control device includes a valve having a flow path defined therethrough and a valve seat in communication with the flow... | 10/30/2007 |
| 7270017 | Torque measuring device for rotating body A torque measuring device for a rotating body is provided, which includes: a stationary section; a rotary section; a rotary transformer composed of a primary coil disposed at the stationary section, and a secondary coil disposed at the rotary section, wherein an ele... | 09/18/2007 |
| 7249527 | System for sensing absolute torque and a module comprising it A system for determining the absolute torque applied to a rotating shaft includes a sensitive element that is deformable under torsion and a measuring device having first and second coders that are intended to be rotationally fixed, respectively, in the vicinity of ... | 07/31/2007 |
| 7219564 | Magnetised transducer element for torque or force sensor A magnetic torque transducer for a structure such as a disc through which torque is transmitted between a central shaft to which the disc is mounted and an outer periphery such as a gear wheel. The intervening region through which torque is transmitted is magnetized... | 05/22/2007 |
| 7201070 | Rotational angle detecting apparatus and torque detecting apparatus A rotational angle detecting apparatus, in which first targets and second targets, the number thereof is coprime with each other, are provided at the rotors rotating coaxially with each other. Rotational angle of the rotor is detected based on the detection signals ... | 04/10/2007 |
| 7181983 | Torque sensor malfunction diagnostic system A system to diagnose a malfunction of a torque sensor in a vehicle steering system includes a voltage difference generator that outputs a voltage difference by comparing a voltage of a contact part between a temperature correcting coil and a torque detecting coil in... | 02/27/2007 |
| 7180263 | Synchronous motor control method and device Synchronous motor controlling apparatus and method controls power applied to minimize or eliminate speed variations of a synchronous motor due to variations in load imposed the motor. The rotational position of a rotor of the synchronous motor based on the input ter... | 02/20/2007 |
| 7171861 | Device for measuring loads applied to rotating components The invention relates to a measuring device for detecting loads, especially torque, bending moment, and axial force applied to rotating components such as shafts, spindles, and/or pins with which changes if length caused by load are measured and determined in a non-... | 02/06/2007 |
| 7155985 | Torque sensor for vehicle steering system A torque sensor for a vehicle steering system includes a voltage boosting circuit that boosts a voltage supplied from a power source, an oscillator, a current amplifier, an inverting current amplifier, first and second coils, first and second resistors, a differenti... | 01/02/2007 |
| 7107861 | Encoder An encoder includes an encoder body adapted to detect the rotation of an object to be measured, a cover that covers a rear part of the encoder body, and a connector that connects an inner circuit of the encoder body to an outer circuit. The connector is mounted on t... | 09/19/2006 |
| 7091427 | Apparatus using resonance of a cavity to determine mass of a load A scale is provided, the scale including a cavity having a resonant frequency which is alterable with variations in mass of a load applied to the cavity. The scale also typically includes a comparator operatively coupled with the cavity to detect actual resonant fre... | 08/15/2006 |
| 7083544 | Method and apparatus for monitoring a transmission part A control device for electric motors and a method for monitoring the serviceability of a transmission part arranged for transmission of torque between an electric motor and a load during operation. The method comprises the steps of initiating at least one test seque... | 08/01/2006 |
| 7073874 | Vehicle drive A rotatable assembly for a vehicle road wheel includes a vehicle suspension knuckle (16), a drive shaft (24), a first bearing (30) carried by the knuckle for rotatably supporting the drive shaft, a wheel hub (13) drivingly connected to th... | 07/11/2006 |
| 7076352 | Electric power steering apparatus and angle compensating method therefor An electric power steering apparatus includes a first resolver whose pole pair number is ‘m’ and a second resolver whose pole pair ‘n’. The electric power steering apparatus further includes a torsion calculating means which calculates the a torsion angle of... | 07/11/2006 |
| 7066034 | Start-up method and system for permanent magnet synchronous motor drive A method of determining a rotor angle in a drive control for a motor, comprising the steps of (a) determining a rotor magnetic flux in the motor; (b) estimating the rotor angle on the basis of the rotor magnetic flux; and (c) correcting the estimated rotor angle on ... | 06/27/2006 |
| 7062979 | Tool and associated methods for controllably applying torque to a fastener A torque tool and an associated method are provided which apply operator-defined levels of torque to a threaded fastener. In one aspect, a portable, battery powered torque tool controls the motor to slow further advancement of the threaded fastener once the torque t... | 06/20/2006 |
| 7051601 | Torque sensor for vehicle steering system A torque sensor for a vehicle steering system having a power source, an oscillator and an offset voltage circuit part includes a current amplifier, first and second coils that are in series and connected at both ends thereof to output terminals of said current ampli... | 05/30/2006 |
| 7044003 | Torque measuring device for electric motors A torque measuring device for electric motors comprising a stator and a rotor is disclosed in which a holding apparatus to hold the stator of a test electric motor is provided, a drive apparatus for the rotor is provided and a torque sensor that is coupled to the dr... | 05/16/2006 |
| 6998631 | Dual-headed, adjustable optoelectronic image reader An optoelectronic sensing device detects two contrasting marks arranged next to each other along two reading tracks on a moving web. An optical head is arranged above each reading track. Each head has a lighting source and a lens, by means of which the contrast mark... | 02/14/2006 |
| 6992278 | Homing process The present invention relates to a method for determining a home position by means of a home position mark on a special microfluidic device type used in a microfluidic system. The method for determining a home position by means of a home position mark on a microflui... | 01/31/2006 |
| 6948385 | Rotational angle detecting apparatus and torque detecting apparatus One or plural rotors are coaxially provided on a first shaft and a second shaft connected with each other by a connection shaft. Plural targets are provided at each rotor. Two detecting means disposed opposite to the targets output detection signals having phases di... | 09/27/2005 |
| 6935195 | Rotational angle detecting apparatus, torque detecting apparatus and steering apparatus A rotational angle detecting apparatus wherein one or more first targets 3a are provided on a steering shaft 13 so that first detecting means 1A outputs a detection signal as the steering shaft 13 rotates, second detecting means | 08/30/2005 |
| 6931311 | Torque sensing for a steering system A steering assembly for a vehicle, including an input shaft connectable to a steering input system, an output shaft connectable to a steering output system, a torsion device connecting the input shaft and the output shaft and allowing relative rotation movement betw... | 08/16/2005 |
| 6910389 | Rotor angle estimation for permanent magnet synchronous motor drive A method of determining a rotor angle in a drive control for a motor, comprising the steps of (a) determining a rotor magnetic flux in the motor; (b) estimating the rotor angle on the basis of the rotor magnetic flux; and (c) correcting the estimated rotor angle on ... | 06/28/2005 |
| 6904813 | System and method for monitoring torque in an electric motor A method for monitoring torque in an electric motor is provided. First, the motor current is measured and the AC torque is determined based on the measured current. The speed of the motor and the DC motor power are then determined. The DC torque is calculated as a f... | 06/14/2005 |
| 6892587 | Rotation detecting device and wheel support bearing assembly utilizing the same To provide a rotation detecting device with a function of transmitting a rotational speed detection signal wireless and enable the rotation detecting device to be assembled compact in size without requiring any anti-rusting treatment to a multi-pole magnet assembly ... | 05/17/2005 |
| 6536293 | Rotational angle detecting apparatus, torque sensor and steering apparatus A rotational angle detecting apparatus includes targets provided on a rotor to output a signal which repeats periodical increase and decrease in accordance with rotation of the rotor; a first detector for detecting an adjacent part of a target; and a seco... | 03/25/2003 |
| 6474146 | Rotary sensor capable of high-precision detection of rotation angle transmitted from outside A rotary sensor comprises: a drive shaft having a flat portion at a forward end portion; a rotator provided with an engagement hole having a flat portion in which the forward end portion of the drive shaft is inserted; an elastic member having an elastic ... | 11/05/2002 |
| 6450044 | Torque transducer A torque transducer having a rotating shaft with first and second substantially rigid torque input members connected by a torsionally compliant coupling that enables angular deflection of the first torque input member relative to the second torque input m... | 09/17/2002 |
| 6412356 | Magnetostrictive torque sensor A torque sensor has a magnetostrictive member fixed to a shaft. The magnetostrictive member is strained by the torque applied to the shaft. Exciting coils generate flux running through the magnetostrictive member. The flux varies in accordance with the st... | 07/02/2002 |
| 6389910 | Transmission path torque transducer A torque transducer comprises a rotating shaft having first and second torque input members connected by a torsionally compliant coupling thereby enabling angular deflection of the torque input members relative to each other as a function of the magnitude... | 05/21/2002 |
