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| Number | Title | Issue Date |
| 8181539 | 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. ... | 05/22/2012 |
| 8161828 | Load cell for monitoring torsion and having over load protection A load cell structure for receiving strain gages to monitor applied torsional forces wherein the opposing force-receiving ends have a plurality of sensing beams spaced about an axis of rotation. Limit posts located between the ends each have a discontinuity therein ... | 04/24/2012 |
| 8146443 | 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 devic... | 04/03/2012 |
| 8065926 | Crankset based bicycle power measurement The present application relates to an input torque measuring device for a drive train of a bicycle. The drive train includes a first crank arm and a second crank arm. An inboard end of each crank arm is rotatably mounted to the bicycle at a bottom bracket of the bic... | 11/29/2011 |
| 8015886 | 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 co... | 09/13/2011 |
| 7975561 | Chain ring power sensor for a bicycle A torque sensing arrangement has a set of strain sensors, such as strain gauges, mounted to an adapter that can be mounted to a chain ring of the crank set of a bicycle wheel. The adapter may have an annular body that can be used to retrofit the original crank set o... | 07/12/2011 |
| 7886620 | Method and apparatus for measuring force particularly torque A method and apparatus for measuring the force applied by a first member coupled to a second member by a connecting body, by: transmitting a cyclically-repeating energy wave through the connecting body from a first location thereon to a second location thereon; meas... | 02/15/2011 |
| 7836782 | 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... | 11/23/2010 |
| 7806006 | 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 circ... | 10/05/2010 |
| 7779704 | 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 a... | 08/24/2010 |
| 7770471 | 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 1 or a flanged coupling 13, as well as a drive coupling system for carrying out the method. The disc coupling component 1, 1... | 08/10/2010 |
| 7721610 | 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 devic... | 05/25/2010 |
| 7665373 | Torque measuring device with redundant torque transmission paths and fail-safe mechanism A torque transferring and monitoring device includes a coupling having a hub portion, a first rim portion, a first set of spokes radially extending between the hub portion and the first rim portion, a second rim portion spaced apart from the first rim portion and a ... | 02/23/2010 |
| 7395724 | Torque sensor packaging systems and methods A torque sensor packaging system and method includes a torque member that includes one or more holes formed therein for receiving one or more respective fasteners associated with a sensing element. The sensing element can be connected to the torque member to the sen... | 07/08/2008 |
| 7299703 | Bearing balls escape and wear annunciator arrangement for ball screw An arrangement for detecting a load bearing failure includes a primary load-carrying system for bearing axially translatably a coaxial load, said primary load-carrying system having a rotor portion and an axially displaceable stator portion. A plurality of bearing b... | 11/27/2007 |
| 7267030 | Bicycle crank assembly A bicycle sprocket crank assembly is comprised of first and second crank arms joined to a spindle. One of the crank arms and the spindle may be fabricated as a unitary structure, or both cranks arms may be formed as separate structures and joined together. In either... | 09/11/2007 |
| 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 |
| 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 |
| 7103518 | Embedded sensor steering shaft A steer-by-wire assembly 10 is provided, including a flexible polymer steering column shaft 12 having a fixed end 14 and a free rotational end 16, and a control feature 22 in communication with said free rotational end 16. T... | 09/05/2006 |
| 7093477 | Torque sensor for calibrating screwing tools The invention relates to a torque sensor for calibrating screwing tools such as dynamometric keys or impact screw drivers. A torque sensor for calibrating screwing tools has an inner body defining an axis with respect to which a torque is to be measured. The inner b... | 08/22/2006 |
| 7043999 | Contactless measurement of the stress of rotating parts The invention relates to a method for measuring mechanical stresses of a rotating part (1) in an essentially closed metal housing. The rotating part comprises a sensor (2) which reflects electromagnetic waves and which can be measurably deformed as a r... | 05/16/2006 |
| 7032465 | Rotational angle detecting device for a wave gear device A driving mechanism includes a motor and a wave gear device. Three sets of torque sensors are attached at intervals of 120° on a diaphragm of a flexible external gear of the wave gear device. In the rotational angle detecting part of the signal processing circuit, ... | 04/25/2006 |
| 7011326 | Piezoresistive torque sensor An automotive steering system with a torque sensor is disclosed. The steering system comprises a shaft linked to a set of road wheels; a sensor connected to the shaft for sensing torque applied to the shaft and operative to provide as output a signal indicative of s... | 03/14/2006 |
| 6962088 | Torque detection device for wave gearing The torque detection device for a wave gearing comprises a strain gauge unit having a strain gauge pattern. The strain gauge pattern includes circular-arc shaped detection segments A and B, and three terminal portions for external wiring with one being formed betwee... | 11/08/2005 |
| 6945126 | Rotation sensor A rotation sensor functioning as both a rotation-angle sensor and a torque sensor is provided which, when applied to a steering sensor for an automobile, for example, permits reduction in the number of components and thus in the weight of the automobile and contribu... | 09/20/2005 |
| 6840118 | Wave gear device torque detection method A wave gear device torque detection method in which the gain of the output of each of a plurality of strain gauge sets affixed to the diaphragm of a flexible external gear is amplified and the outputs are then combined to form a detection signal. Adjusting the gain ... | 01/11/2005 |
| 6826970 | Method and apparatus for detecting bearing failure A device is presented having an optical emitter/receiver device. The device has a light pipe connected with the optical emitter/receiver device. Also a rotating shaft having at least one opening. The light pipe is situated within the rotating shaft. At least one bea... | 12/07/2004 |
| 6807871 | Torque detector Disclosed herein is a torque detector. The torque includes a synchronous detector, a bridge circuit and a signal converter. The synchronous detector detects an AC voltage signal having a preset DC voltage level and a certain frequency, and generates a detection outp... | 10/26/2004 |
| 6799481 | Torsion module of a torque detection device A torsion module includes first and second rings (9, 9′) and a spoked wheel (8). The first ring is attachable to a steering wheel (13). The spoked wheel is attached on top and bottom sides to the rings and has bending spokes which join a rim t... | 10/05/2004 |
| 6688185 | System and method for microstrain measurement A microstrain sensor is provided for measuring deformation, and indirectly, other parameters such as acceleration, temperature, pressure, and force. Rather than providing several discreet resistance paths, the microstrain sensor utilizes input and output ... | 02/10/2004 |
| 6644135 | Torque sensor for a bicycle bottom bracket assembly A torque sensor for a bicycle bottom bracket assembly having a bottom bracket axle includes an axle supporting member for supporting the axle for rotation around a support axis. The axle supporting member has a first sensor mounting location, and a first ... | 11/11/2003 |
| 6595074 | Torque detecting device and electromotive power steering apparatus mounting the torque detecting device thereon A torque detecting device includes a pair of fixed portions are provided on a rotating shaft to have a predetermined distance in an axially longitudinal direction, a permanent strain portion which changes a magnetostrictive characteristic corresponding to... | 07/22/2003 |
| 6532833 | Torque measuring piezoelectric device and method A method and apparatus are described for noncontact measurement of torque applied to a torque-bearing member such as a shaft. The method involves the use of a piezoelectric transducer mechanically coupled to the shaft for rotation therewith, and having el... | 03/18/2003 |
| 5907106 | Method and apparatus for measuring strain and load on rotating shafts An optical strain gauge for measuring strain and torque on a rotating member. The apparatus includes a plurality of electrically resistive torque sensing elements secured to a rotating shaft which generate an output signal to a light. The magnitude of the... | 05/25/1999 |
| 5874682 | Torque measuring device particularly for a multishaft extruder An assembly for applying a torque from an output shaft to an input shaft of an apparatus, such as a multishaft extruder, and for measuring the applied torque. The assembly includes a connecting sleeve for torque-transmittingly coupling the output shaft wi... | 02/23/1999 |
| 5837909 | Telemetry based shaft torque measurement system for hollow shafts A hollow shaft torque measurement and telemetry system is provided for race cars. The system provides information on the torque delivered to each drive wheel of a race car while the race car is in motion. That information is valuable in attempting to maxi... | 11/17/1998 |
| 5798641 | Torque magnetometer utilizing integrated piezoresistive levers A torque magnetometer employing integrated piezoresistive levers to measure magnetization of very small anisotropic samples. A sample holding platform is cantilevered from the substrate by parallel legs on which piezoresistors have been applied. A Wheatst... | 08/25/1998 |
| 5753828 | Shaft torque measuring system A shaft torque measuring device in the form of a compact sleeve may be slid on the steering shaft of an automobile and requires only about the same axial space as the diameter of the shaft itself. Two collars are integrally interconnected by four cross me... | 05/19/1998 |
| 5705757 | Apparatus and method for measuring torque and power An apparatus and method for measuring torque imposed on a drive shaft and horsepower transmitted to a drive shaft are provided. The apparatus includes four strain gauges mounted onto the drive shaft. The strain gauges are connected to a transmitter which ... | 01/06/1998 |
| 5672834 | Torgue indicating device A torque indicating device comprising first and second parts connected in torque transmitting relationship, torque transmitting means connecting said first and second parts, torque sensing means, provided on said torque transmitting means and responsive to tor... | 09/30/1997 |
