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WO/2003/050576 |
A chiral fiber sensor (10) implemented in a chiral fiber (12) is provided that mimics advantageous optical properties of a cholesteric liquid crystal structure. In a passive sensor embodiment (10), the chiral fiber sensor of the present ...
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WO/2003/044478 |
A method of using a magnetic fluid clutch for torque measurement comprises steps of modulating electric current through a coil of the magnetic fluid clutch to maintain a steady-state quasi-solid phase of a magnetic fluid medium contained...
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WO/2003/043162 |
A geared motor drive for a vehicle window lifter comprises an electric motor with a motor shaft; a transmission system comprising an input driven by the motor shaft and a drive output; a shock absorber (6) coupling the input to the outpu...
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WO/2003/034013 |
A surface acoustic wave (SAW) sensor comprises a transducer (24) provided on a substrate (23), wherein the transducer (24) is orientated on the substrate (23) so that the direction of acoustic wave propagation is such that the variation ...
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WO/2003/022658 |
The invention relates to an assembly consisting of a steering wheel (2) and a torsion module (3) of a torque detection device in a power-assisted steering system or a steering system. The invention is characterised in that the torsion mo...
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WO/2003/023345 |
The invention relates to a torsion module for a torque-sensing device on a steering system or steering servo system, comprising a spoked wheel (1) with an inner rim (2) which may be fixed to the steering shaft and an external rim (4), co...
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WO/2003/019117 |
The invention relates to a method for determining, for example, optical angles, a torque or a distance, using a first pair of periodic line patterns (2a, b) with n periods and a second pair (2c, d) with n+1 periods. The inventive method ...
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WO/2003/014686 |
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 ...
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WO/2003/014685 |
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 or pins. Said measuring device measures and determines the chang...
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WO/2003/010427 |
A torque calculator (10) and method for providing real time data that measures net torque output of a running engine (100) in a motor vehicle. Gross torque production (24) is calculated using engine speed and fueling data. Torque losses ...
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WO/2003/000465 |
A power torque tool has an output shaft (18) along which torque pulses are transmitted to a load (28) such as a bolt. The shaft is driven by a mechanism (16) which can be of the impact-type or piston-and-cylinder type. The torque in the ...
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WO/2002/101346 |
A torque transducer system comprises a disc (20) through which torque is transmitted in a radial direction and which has a magnetised annular region (26) which emanates a torque-dependent magnetic field. A non-contacting magnetic field s...
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WO/2002/099374 |
The invention relates to a method for fixing a torque measuring device (4) in order to detect a relative moment between the input shaft (2) and the output shaft (3) of a steering system (1), in particular of a toothed rack power steering...
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WO/2002/093121 |
A flux-gate magnetometer torque sensor is provided having a rotatble shaft (26) to which a torque force is to be applied, a sleeve of conductive foil (84) afixed to the surface of the shaft over the magnetically active regions, a plurali...
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WO/2002/090891 |
An interface unit (30) responds to a signal (Vt dependent on a measured parameter, such as torque, and provides an output to an auxiliary unit (40) under the control of a microprocessor (35). The auxiliary unit (40) is connected to the i...
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WO/2002/082031 |
A sensor head (2) for an eddy current sensor (4) is radially directed at a shaft (1). The electrical conductivity of the shaft (1) changes corresponding to the torque placed on the shaft. Said change leads to a change in the coupling pow...
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WO/2002/077574 |
An optical displacement sensor (200) comprises a source of optical radiation (230), an array of radiation detectors (240), at least one modulating element (204, 205) having alternating first and second modulating regions (206, 207) circu...
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WO/2002/076807 |
The invention relates to a steering wheel for a motor vehicle comprising a steering wheel module (1), which supports electrical/electronic subassemblies and which is attached to the steering wheel (13). The steering wheel is characterize...
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WO/2002/077595 |
The invention relates to a torsion module for a torque detection device of a steering system or of a steering power-assist system of a motor vehicle. The torsion module comprises a spoked wheel (8), which can be fastened to a steering wh...
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WO/2002/071019 |
The invention concerns a position sensor, designed in particular for detecting a steering column torsion, consisting of a first magnetic structure including a plurality of magnets and a second magnetic structure including two ferromagnet...
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WO/2002/068922 |
Compensation is provided for changes in the stored magnetisation of a magnetic-based transducer having a transducer region (12) of permanent magnetisation which emanates a magnetic field that is a function of an applied stress such as to...
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WO/2002/065080 |
A torsion load measuring device that provides for a mounting block to which torque measuring device is fixed. The mounting block is interposed between the gearbox of a ground boring auger and pendulum mounting means of a parent machine a...
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WO/2002/063262 |
A region (22) of a shaft (10) may be given a permanent or stored longitudinal magnetisation by locating it within a helical coil (60) and rotating (28) the shaft about its axis (A-A) when applying a pulse of direct current (I) to magneti...
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WO/2002/062602 |
A steering assembly for a vehicle, including an input shaft (22) connectable to a steering input system (12), an output shaft (23) connectable to a steering output system, a torsion device (34) connecting the input shaft and the output s...
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WO/2002/059555 |
A hand-held unit for measuring torque has a magnetic structure (40) with two-spaced pole ends (44a:44b) of opposite polarity applicable at or adjacent to the surface of a portion (32) of a rotating shaft (30) of ferromagnetic material, t...
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WO/2002/059556 |
A magnetic transducer element comprises at least one magnet (54a-c) which is axially disposed along the axis of a tubular or bored shaft (30) along which torque is transmitted. The wall (34) of the shaft (30) is of ferromagnetic material...
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WO/2002/048667 |
A method and system for monitoring torque in a rotating shaft (12) is disclosed. Two peripheral bands (18, 20) having equally spaced toothed projections (22) are axially disposed along the length of a shaft and laser sensors (26, 28) are...
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WO/2002/047551 |
The invention relates to an ergometer for equipment, in particular for bicycles (10). Said ergometer comprises a shaft (11), on which at least two drive elements (14, 15) that are offset in an axial direction (12, 13) are mounted and at ...
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WO/2002/033279 |
A power-assisted bicycle is provided with a one-way clutch that can also be used as a torque detection apparatus. The one-way clutch has a tooth part (112) mounted on a driven means and a piece part (100) mounted slidably yet non-rotatab...
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WO/2002/023146 |
A shaft (40) subject to torque about its axis (A-A) has an axial bore (42). A region (44) of the shaft (40) has a stored magnetisation, the region (44) being permanently magnetised with circumferential magnetisation about the axis (A-A) ...
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WO/2002/018894 |
The invention relates to a method for determining a rotational angle ($g(F)) and/or an angle differential ($g(d)) on a divided shaft (3), on which several coded phase tracks (1a, 1b, 2a, 2b) are arranged. Each group of tracks (1a, 1b and...
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WO/2002/019457 |
A rotary signal coupler for providing signal coupling to a Surface Acoustic Wave (SAW) device (4) mounted on a shaft (5) comprises a first electrically conducting loop (21) mounted on a disc (23) and connected to the SAW device (4), and ...
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WO/2002/018895 |
The present invention relates to the torque tester which is very precise with simple operation. Since the torque tester in accordance with the present invention includes a torque sensor for sensing the torque applied; an adaptor for adju...
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WO/2002/016881 |
The invention relates to a method for the computational correction of angular position measurements, using two coded wheels (1a, 1b). The method allows assembly and production errors, in particular, to be retrospectively corrected. The m...
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WO/2002/016188 |
The invention relates to method for self-calibrating a torsion angle detected by a torque/angle sensor, according to which two code wheels (1a, 1b) with an interposed torsion element (9) are mounted on a shaft (3). The two code wheels (1...
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WO/2002/016879 |
The invention relates to a method for phase angle correction during the scanning of a code track by means of sensor elements, said sensor elements providing a sinusoidal and a cosinusoidal signal, wherein the phase difference between the...
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WO/2002/014817 |
The invention relates to a method and device for determining a torque (M¿GL?) of an electrical machine (19), especially of a generator (19) in a motor vehicle. The method and device are characterized in that a unit (43) determines the t...
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WO/2002/014818 |
The invention relates to a measuring device and to a method for the contactless measurement of an angle of rotation or a torsion angle. The measuring device comprises a first resonator (2) and a second resonator (4). The two resonators (...
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WO/2002/008048 |
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 t...
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WO/2001/096826 |
A magnetic transducer element (22) is formed by rotating an integral region of a shaft (20) about an axis (A-A) in the presence of a magnetic source (30). An annulus (42) of magnetisation results in having its magnetisation in the axial ...
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WO/2001/090711 |
Torque is measured in the chain wheel (50) of a pedal cycle by a non-contacting magnetic-based transducer. A magnetising source (70), a D.C. type of source such as a permanent magnet is positioned adjacent the chain wheel (50) to induce ...
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WO/2001/086244 |
A power sensing device for bicycles has a wheel member (4) and a displacement sensor (6), the wheel member comprising a hub portion (12), an outer ring portion (14) and a plurality of flexible beam elements (16) interconnecting the hub a...
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WO/2001/081151 |
A modular pinion gear housing subassembly (16) and method for making same, wherein the modular concept allows for testing and calibration of critical steering gear components prior to final assembly onto a electrically assisted rack and ...
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WO/2001/079801 |
A magnetic transducer element is formed in a portion (22) of a shaft (20) by an axially-oriented magnetic source (30) comprising a U-shape permanent magnet or electromagnet assembly, the gap (g) between the poles of which is small compar...
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WO/2001/073390 |
A force transducer element (20) comprises a body (22) of magnetisable material having at least one magnetised region (30) at an angle, say 45°, to the force-sensing direction (P-P). Preferably there are a plurality of parallel magnetise...
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WO/2001/071288 |
The torsional quantity measuring device is such that for the purpose of providing a torque measuring device that is simple in construction and small in size and can be produced at low cost, and to achieve this purpose, the torsional quan...
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WO/2001/067058 |
The invention relates to a method and to a device for measuring especially a torque acting upon an engine shaft. At least three surface acoustic waves with different propagation directions are generated on the piezoelectric substrate of ...
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WO/2001/067059 |
A rotation sensor for sensing a relative angle of rotation with less variation of measurement accuracy even in presence of various disturbances. The rotation sensor measures the impedance variations occurring in two exciting coils (12b) ...
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WO/2001/065226 |
A method of controlling a chassis dynamometer (10) to simulate actual road conditions experienced by a vehicle (12) is disclosed. The chassis dynamometer (10) includes at least one actuator (14) coupled to a roller (16). The actuator (14...
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WO/2001/064499 |
A power steering mechanism (10) for turning steerable wheels of a vehicle comprises a rotatable input member (22), a rotatable output member (26), and a torsion bar (28) connecting the input member and the output member. The torsion bar ...
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