Class / Patent application number | Description | Number of patent applications / Date published |
073862338 | Resistance strain gage | 26 |
20090013803 | TORQUE MEASUREMENT WITHIN A POWERTRAIN - A method is provided for measuring torque in a shaft of a drive line including a disc coupling component such as a flexplate | 01-15-2009 |
20090031822 | ROTATING BODY DYNAMIC QUANTITY MEASURING DEVICE AND SYSTEM - A single crystal semiconductor including a Wheatstone bridge circuit formed of an impurity diffusion layer whose longitudinal direction is aligned with a particular crystal orientation is connected to a rotating body. A rotating body dynamic quantity measuring device and a system using the measuring device are fatigue- and corrosion-resistant because of the single crystal semiconductor used and are not easily affected by temperature variations because of the bridge circuit considering a single crystal anisotropy. | 02-05-2009 |
20090120210 | BICYCLE TORQUE MEASURING SYSTEM - Strain gauges are mounted on each crank arm of the bicycle and provide a measure of the torque applied to each crank arm. In a preferred embodiment, strain gauges are mounted on opposite edges of each crank arm, which includes a self-contained power, electrical circuitry, and a wireless transmitter for transmitting the strain measurement information to a main controller. The main controller includes a wireless transceiver for transmitting and receiving data from both the left and right crank arms and external devices. Memory is also included for storing such data for subsequent analysis to determine the individual leg performance of a cyclist during a race or training session. | 05-14-2009 |
20090314104 | TORQUE MEASUREMENT WITHIN A POWERTRAIN - Aspects of the present invention are directed to using surface acoustic wave (SAW) sensors mounted on a disc coupling component in a powertrain to measure the torque generated by an automobile engine. The sensor may be positioned and oriented on the disc coupling component so that the phase velocities of SAWs propagating through active elements of the SAW sensors are aligned with principal strain components due to torque in the disc coupling component. The torque may be calculated by determining the difference between resonant frequencies of the active elements to suppress common-mode interference factors. In addition, SAW resonant frequencies may be communicated in a non-contacting manner by utilizing rotary and stationary couplers employing radio frequency (RF) signals. Moreover, SAW sensors may be activated and interrogated by employing targeted RF pulses having different carrier frequencies at or near respective resonant frequencies of each resonator in a SAW sensor. | 12-24-2009 |
20090320614 | MOTOR PUMP TORQUE TRANSDUCER - An apparatus can be assembled between a pump and a motor driving the pump for a measuring torque and speed. The apparatus can include a housing having a motor attachment port and a pump attachment port. A primary coil is supported by the housing. A shaft has a first outer end and second outer end and an inner portion located within the housing. The first and second outer ends are connectible to a motor and a pump to suspend the shaft between the motor and the pump only by the outer ends of the shaft. A strain gauge transducer component is operably associated with the shaft. A secondary induction coil is mounted on the shaft and is located sheathed within the primary coil for providing power to the strain gauge transducer component. A wireless output of readings from the strain gauge transducer component is provided. | 12-31-2009 |
20100192705 | ANTI-VIBRATION TORQUE SENSING AND CONTROL DEVICE FOR TOOLS - A torque sensing and control device for tools comprises: a torque sensing and transmitting adapter fabricated with rib structure and mounted on or built in a fastening tool; at least a torque sensor secured on at least a rib evenly spaced and formed on the adapter and operatively sensing a torque signal when applying a torque on a work or object when rotatably operating the fastening tool; and a digital display control module operatively receiving the torque signal, displaying a torque data and generating an audio or visual warning signal for reminding the user for stopping operation of the fastening tool, or for switching off power or air supply to the fastening tool, and or actuating a delay control to restart a next fastening operation in a pre-determined time interval. | 08-05-2010 |
20110000320 | Pressure isolated strain gauge torque sensor - A fluid parameter measuring instrument relies upon a torque transmitting member comprising an integrally joined and substantially concentric shaft within a tube to transfer torsional stress across a pressure differential barrier without a penetration aperture seal. On one environmental side of the barrier, a pair of thin wall beams having strain gauges secured thereto are secured proximate of the beam mid-points to the torque transmitting member and the opposite ends to barrier structure. The strain gauges are connected in an electrical balance circuit to measure torque as a function of stress on the beams. | 01-06-2011 |
20110041625 | Torque measurement device and arrangement composed of a torque measurement device and a drive shaft - The invention relates to a torque measurement device having a torque measurement shaft disposed between two flanges, whereby an intermediate shaft is provided between at least one of the two flanges and the measurement shaft, which intermediate shaft is disposed axially at the same height as the measurement shaft, on a different radius. | 02-24-2011 |
20110120233 | ADAPTER FOR MEASURING TORQUE VALUE - An adapter of the present invention includes a torsion rod for transferring torsion force between two tools/workpieces. The torsion rod has at least one arc surface disposed on its periphery. The arc surface and the torsion rod are concentric. A strain meter is disposed on the arc surface, and a displayer connects to the strain meter. As such, the adapter of the present invention can measure the torque value more precisely. | 05-26-2011 |
20110239788 | TORQUE SENSOR AND ROBOT APPARATUS - Provided is a torque sensor including a first rotating body, a second rotating body, a strain body, and a detection element. The first rotating body is rotatable around an input shaft. The second rotating body is rotatable around an output shaft. The strain body includes a first engaging portion. The first engaging portion is separated from at least one of the rotating bodies in a first direction parallel to the input shaft, a second direction perpendicular to the first direction, and a third direction around the input shaft and is capable of engaging to the at least one of the rotating bodies in the third direction. The strain body transmits a rotational torque to the third direction between the first rotating body and the second rotating body. The detection element is provided to the strain body to measure a strain of the strain body due to the rotational torque. | 10-06-2011 |
20110283815 | Measuring Device And Robot - The invention relates to a measuring device ( | 11-24-2011 |
20120024081 | TRAILER HITCH MONITORING APPARATUS AND METHOD - A trailer hitch assembly is provided for monitoring trailer hitch loads comprising a hitch support and a hitch coupled to the hitch support including a hitch base having a hitch base radius, a hitch ball disposed on and above the hitch base, and a lug extending downwardly from the hitch base. An instrument spacer is disposed between the hitch base and the hitch support defining a cylindrical bore receiving the lug. The cylindrical bore extends along a central bore axis and has a bore radius that is less than the hitch base radius. At least one strain gauge is disposed on the instrument spacer at a radial distance from the central bore axis that is less than or equal to the hitch base radius and greater than or equal to the bore radius. | 02-02-2012 |
20120137790 | TORQUE DETECTOR - A torque detector includes an output body, an input body adapted to permit a torque to be applied thereto, a torque beam unit, and a detecting unit disposed between the input and output bodies for converting a relative rotation of the input and output bodies into an electric signal. The torque beam unit includes a shaft, at least one flexible first beam extending radially and outwardly from the shaft and having a proximate end portion connected to the shaft, and a distal end portion connected to and co-rotatable with the output body, and at least one second flexible beam extending radially and outwardly from the shaft in a direction different from that of the first beam and having a proximate end portion connected to the shaft, and a distal end portion connected to and co-rotatable with the input body. | 06-07-2012 |
20120204658 | TORQUE-MEASURING HUB, POWER-MEASURING SYSTEM, AND CYCLE WHEEL EQUIPPED WITH SUCH A HUB OR SYSTEM - A hub for measuring the driving power of a cycle wheel including a central shaft defining an axis of rotation of the wheel, a hub body mounted to rotate freely about the shaft, a flange mounted to rotate freely about the hub body and axially aligned with the hub body, as well as a torque sensor including a test body which supports at least one strain gauge. The torque sensor is housed in a two-part housing which includes a cutout, arranged in an outer radial surface of the hub body, and a notch, arranged in an outer radial surface of the flange. | 08-16-2012 |
20120234108 | ISOLATED TORQUE SENSOR - An isolated torque sensing device is described having a torque tube that may be configured in an axle of a bicycle or e-bike. A strain gauge is configured on either the inner or outer diameter of the torque tube. The torque sensor system may be configured in a 4-point bending configuration, wherein force from bearings within the axle, apply force to the torque tube. | 09-20-2012 |
20130167662 | PHOTOELECTRIC POWERED WIRELESS SENSOR UNIT - This disclosure is directed to techniques for detecting one or more indications of rotational movement of a rotatable member. According to one example, at least one movement sensor is associated with the rotatable member and is configured to detect at least one measurement of rotational motion of the rotatable member. The at least one movement sensor is configured to be powered via at least one photoelectric element secured to the rotatable member. The at least one movement sensor is configured to communicate the at least one indication of the detected at least one measurement from the rotatable member via at least one wireless communications module associated with the rotatable member and powered via the at least one photoelectric element. | 07-04-2013 |
20140000386 | SINGLE EAR STATOR ANTENNA FOR WIRELESS TORQUE MEASUREMENT SYSTEM | 01-02-2014 |
20140033831 | ROTATIONAL TORSION TESTER - A rotational torsion tester, comprising: a first drive shaft; a second drive shaft; a load applying unit that applies a torsional load to a workpiece; at least one bearing unit including a first bearing unit that supports the load applying unit to be rotatable about a rotation axis; a rotation drive unit having a first electric motor that drives the second drive shaft and the load applying unit to rotate in phase; and a torque sensor that detects the torsional load, wherein the load applying unit comprises: a second electric motor that drives the first drive shaft; the torque sensor is attached to a part at which the first drive shaft is inserted into the shaft part; the torque sensor is disposed between a pair of first bearings; and the torque sensor includes a strain gauge adhered to a narrowed part to detect the torsional load. | 02-06-2014 |
20140083208 | VANE ARM TESTING RIG - An example vane arm testing rig includes a base having a first attachment configured to receive a first end of a vane arm when the vane arm is in an engaged position, and a torque member having a second attachment configured to receive an opposing, second end of the vane arm when the vane arm is in the engaged position. The vane arm extends along a longitudinal axis from the first end to the second end. The first and second attachments are configured to rotate relative to each other about the axis. The first and second attachments are configured to move laterally relative to each other. | 03-27-2014 |
20140144252 | TORQUE SENSOR - Disclosed herein is a torque sensor. The torque sensor includes a cylindrical upper case having one open end and an overload prevention member that is fixed to the upper case to prevent overload. A lower case covers the open end of the upper case and an elastic structure member is disposed on the lower case to detect deformation. Additionally, a silicon structure member is disposed on the elastic structure member to detect deformation. | 05-29-2014 |
20140165744 | APPARATUS, SYSTEM AND METHOD FOR POWER MEASUREMENT AT A CRANK AXLE AND CRANK ARM - A power measurement assembly mounted within an axle. In a specific example, the axle is a spindle that is interconnects the cranks of a bicycle, exercise, bicycle, or other fitness equipment. The power measurement assembly may include strain gauges connected with an appropriate circuit (e.g., Wheatstone bridge) that provides an output of the force on the axle by a rider pedaling the crank. In the case of an axle, the strain gauges measure the torsion due to the applied torque on the crank. The value is converted to a power value by a processor and that value is then wirelessly transmitted for display. The processor and/or the transmitter may be mounted within the axle. A separate power measurement assembly may be mounted on one of the cranks, which may include its own processor and transmitter or may take advantage of the processor and transmitter within the axle. | 06-19-2014 |
20140202262 | TORQUE-MEASURING HUB, POWER-MEASURING SYSTEM, CYCLE WHEEL EQUIPPED WITH SUCH A HUB OR SYSTEM, AND MEASURING METHOD USING SUCH A HUB - A hub for measuring the driving torque of a cycle wheel, the hub including a central shaft defining an axis of rotation of the wheel, and a hub body mounted to rotate freely about the shaft, the hub body including a central portion bordered on both sides by respective flanges, the flanges fastening at least one connecting element to connect the hub body to a rim of the wheel. The hub includes a system for measuring the driving torque of the wheel including strain gauges fixed on the hub body. | 07-24-2014 |
20140216173 | DETERMINING TORQUE IN A SHAFT - The present invention relates to an apparatus for determining torque in a shaft, the apparatus comprising an elongate member with a weakened region partway along its length, and means for securing the member to the shaft either side of the weakened region, preferably adjacent each end of the elongate member. The invention extends to a method of localising the twist a shaft undergoes, comprising securing an elongate member to a shaft, wherein the elongate member comprises a weakened region partway along its length. | 08-07-2014 |
20140331789 | WHEEL COMPONENT FORCE DETECTING APPARATUS - A wheel component force detecting apparatus for detecting a component force on a wheel includes a cylindrical axle flange, an electric motor, and a wheel unit. The electric motor includes a stator and an armature. The wheel component force detecting apparatus includes a pair of sensing units each including a cylinder and a bridge circuit. The cylinder is mounted outside the circumferential surface of the axle flange and has a first end fixed to the axle flange and a second end fixed to the stator. The bridge circuit includes a plurality of strain gages disposed on the cylinder. The pair of sensing units is symmetrical in the axial direction of the axle flange with respect to the stator. | 11-13-2014 |
20150330851 | ADAPTIVE WIRELESS TORQUE MEASUREMENT SYSTEM AND METHOD - An adaptive wireless torque measurement system includes a rotor, a rotor antenna, a stator antenna, stator electronics, and rotor electronics. The rotor antenna is attached to the rotor. The stator antenna is configured to be inductively coupled to the rotor antenna. The stator electronics are coupled to receive, via the stator antenna, feedback data and are configured, in response thereto, to generate and transmit, via the stator antenna, power signals at a power level magnitude based in part on the feedback data. The rotor electronics are attached to the rotor and are coupled to receive, via the rotor antenna, the power signals transmitted by the stator electronics. The rotor electronics are configured to determine the power level magnitude of the power signals, generate the feedback data, the feedback data at least including information representative of the determined power level magnitude, and transmit, via the rotor antenna, the feedback data. | 11-19-2015 |
20160131543 | TORQUE-MEASURING SHAFT - A torque-measuring shaft includes a measuring shaft disposed on a shaft axis of the torque-measuring shaft, loadable in torsion and having at least one rotationally symmetric surface region disposed coaxially with the shaft axis as well as a measuring device disposed on the measuring shaft for measuring a torsion of the measuring shaft, wherein the torque-measuring shaft has a material weakening disposed in radial direction inside the measuring shaft, eccentrically relative to the shaft axis. | 05-12-2016 |