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| Number | Title | Issue Date |
| 7272476 | Universal automotive maintenance component controller apparatus A computer-implemented universal automotive maintenance component controller apparatus that may be used as common core enabling a user to interface with, control, and analyze data from, various modular automotive maintenance or diagnostic equipment and/or components... | 09/18/2007 |
| 7096746 | Method for determining the power of a test specimen, measuring device, and power test bench for the test specimen A method for determining the power of a test specimen, in particular of an internal combustion engine, includes a measuring device for registering the time profile of the rotational speed of an output shaft of the test specimen. To determine the power at a specific ... | 08/29/2006 |
| 7034522 | Method and apparatus for measuring movement, displacement and/or deformation A non-contact rotation speed and torque sensing device which uses the natural inhomogeneities in the magnetic properties of a rotating element (4) to measure movement, displacement and deformation of the rotating element. An alternating magnetic field is appl... | 04/25/2006 |
| 6925893 | Rotation sensor A rotation sensor includes a first rotor constituted by a magnetic material and having an outer face that has first conductive layers disposed in two levels as viewed in the direction of a rotation axis and second conductive layers disposed outwardly of and between ... | 08/09/2005 |
| 6915710 | Method and apparatus for correcting attenuation in an optical torque sensor An optical torque sensor comprises a radiation source emitting radiation of at least one wavelength. At least one sensor senses the emitted radiation and generates at least one intensity signal indicative of the intensity of the emitted radiation. At least one signa... | 07/12/2005 |
| 6907793 | Method and device for determining a torque of an electrical machine A method and an apparatus for determining a torque (MGL) of an electrical machine (19), in particular a generator (19) in a motor vehicle, are proposed. The method and the apparatus are characterized in that by a unit (43), the torque... | 06/21/2005 |
| 6901815 | Engine torque sensor An optical sensing system is used to measure engine torque. A pair of patterns are formed on a driveshaft between a transmission and axle differential. The patterns are spaced apart from one another by a predetermined distance and are formed about the circumference ... | 06/07/2005 |
| 6360156 | Method and system of determining an acceptable torque level to be applied to at least one clutch pack of an automobile A method is provided for determining an acceptable torque level to be applied to at least one clutch pack (of an automobile) which includes the requirement of internal slip to transmit torque. The automobile includes a plurality of wheels. A velocity is s... | 03/19/2002 |
| 6356847 | Method and device for determining the torque exerted on a rotating body which can be rotationally driven around a rotational axis The invention relates to a method and a device for determining the torque exerted on a body of revolution 2 capable of being driven rotatably about an axis of rotation 1. The device possesses a first and a second measurement generator 3 and 4 which are ar... | 03/12/2002 |
| 6041285 | AC motorized wheel control system Torque is distributed by calculating first and second torque commands using a requested torque and a ratio of speeds of first and second wheels and limiting them in accordance with respective torque command approved ranges and approved change rates; conve... | 03/21/2000 |
| 5979248 | Method and device for determining a power A power in a mechanical energy transfer between one of several stationary machines and a shaft assembly is determined. The shaft assembly traverses the machine along a given axis and it rotates about the axis with an angular velocity. The torsion angle by... | 11/09/1999 |
| 5895867 | Device for measuring torque A device for measuring the torque, released or received through a shaft, of machinery or apparatus, in particular an engine or a machine, comprises a first holding part, which is essentially firmly connected to a base. This first holding part is equipped ... | 04/20/1999 |
| 5796014 | Torque sensor Two coaxial circumferential grooves formed apart from each other in an axial direction are provided for a coil bobbin made of a non-conductive material, such as plastic, and arranged to be secured in a housing coaxially with an input shaft and an output s... | 08/18/1998 |
| 5789914 | Onboard digital locomotive horsepower multimeter The present invention relates to a digital DC voltage and horse power multimeter device unitized in determining the voltage and horse power on a locomotive system. The meter is permanently mounted onboard the locomotive and is capable of instantaneous det... | 08/04/1998 |
| 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 |
| 5437195 | Mechanical sensor produced from a polymer film The invention is a mechanical sensor produced from a polymer film whose upper part (A) is made conductive, the lower part (B) remaining an insulator. When a strain is applied, the mechanical sensor according to the invention distorts, varying the resistan... | 08/01/1995 |
| 5429004 | Inertia flywheel assembly for a dynamometer An inertia flywheel assembly for a dynamometer is portable and provides for accurate testing of the performance of automotive vehicles. In a motorcycle application a flywheel (15) is mounted between swing arms (14) and supported on axle (18) by eccentric ... | 07/04/1995 |
| 5323659 | Multifunctional torque sensor A multifunctional torque sensor comprises a torque transmission shaft, a rectangle-shaped or parallelogram-shaped magnetic material strip bonded on the surface of the torque transmission shaft so that opposite sides of the rectangle or parallelogram face ... | 06/28/1994 |
| 5135062 | Strain gage transducer system with guard circuit A strain gage transducer system, such as a load cell based weighing system, is protected against moisture related errors by an electrically conducting guard circuit for terminals and other parts subject to wet or humid conditions. The guard circuit is con... | 08/04/1992 |
| 5031455 | Bicycle power meter A bicycle power meter having components which replace the rear axle hub assembly of a conventional chain driven bicycle. Inner and outer hubs are coupled to the usual freewheel chain drive cluster and to the rear wheel, respectively. The hubs are intercon... | 07/16/1991 |
| 4891975 | Method and apparatus for remote monitoring of valves and valve operators A method and apparatus for providing a previously unattainable yet desirable function of monitoring at a remote location and/or in a remote (non-intrusive) manner the condition of a valve operator to signal a need for more thorough inspection and for poss... | 01/09/1990 |
| 4831873 | Method and apparatus for remote monitoring of valves and valve operators A method and apparatus for providing a previously unattainable yet desirable function of monitoring at a remote location and/or in a remote (non-intrusive) manner the condition of a valve operator to signal a need for more thorough inspection and for poss... | 05/23/1989 |
| 4693077 | Closed-loop engine control with feedback torque error compensation A closed-loop engine control system is disclosed in which an engine is controlled to provide power to a load as a function of measured feedback torque. A programmable digital controller modifies the feedback torque by adding to it a synthesized correction... | 09/15/1987 |
| 4603582 | Inertial dynamometer system and method for measuring and indicating gross horsepower The Inertial Dynamometer System measures and indicates the gross horsepower being produced by a vehicle's prime mover at any instant, accounting for aerodynamic, frictional and viscous drag in addition to gravitational and inertial acceleration factors. T... | 08/05/1986 |
| 4548079 | Method and apparatus to automatically determine the weight or mass of a moving vehicle This invention teaches a method and apparatus for the determination of the weight of a moving vehicle driven by an internal combustion engine. The invention provides means for the determination of a value corresponding to the driving torque of the engine,... | 10/22/1985 |
| 4530248 | Dynamometer having torque and horsepower readout The dynamometer has a fixed frame in which a Hall effect generator measures the flux density at a location indicative of the flux in the gap between the rotor and the inductor rings. The gap flux density is influenced by the flux induced by the field and ... | 07/23/1985 |
| 4520681 | Apparatus for measuring torque on a rotating shaft A mobile dynamometer includes a slotted disk (12) and slotted disk (14) disposed on a rotating shaft (10) a predetermined distance apart. A slot (16) is formed in the periphery of the disk (12) and a slot (18) is formed in the periphery of the disk (14). ... | 06/04/1985 |
| 4450728 | Vehicle force measurement system A vehicle force measurement system for determining the force output of a vehicle independent of the radius dimensions of the driving wheels of the vehicle. A fifth wheel is utilized to provide an accurate vehicle speed reading. Torque and RPM sensors moun... | 05/29/1984 |
| 4416161 | Method and apparatus for measuring torque A magnetic field is generated in the vicinity of a rotatably driven, loaded shaft. A Wiegand device in the shaft is differentially displaced by twisting of the shaft. Changes in magnetization in the regions during rotation of the shaft are detected by a c... | 11/22/1983 |
| 4406168 | System for measuring torque and/or speed of rotating shaft A magnetic transducer fits over a rotatable shaft and has a multi-pole magnetic core, one primary winding being wound on half of the poles while a second primary winding is wound on the other half. Direct current pulses are alternately supplied to the two... | 09/27/1983 |
| 4347748 | Torque transducer Apparatus for measuring torque (or functions derived therefrom or related thereto) transmitted by a shaft driven to rotate and connected to a load. The apparatus includes first and second optically flat, radiation reflecting, surfaces located on the shaft... | 09/07/1982 |
| 4306462 | System for measuring torque and speed of rotating shaft A magnetic transducer fits over a rotatable shaft and has a primary winding that is a-c energized by an a-c excitation signal to produce a magnetic field, adjacent to the shaft, which changes as the shaft is torsionally stressed when torque is applied the... | 12/22/1981 |
| 4286324 | Prime mover fuel efficiency control system A system for determining and controlling the power being transmitted through a rotated shaft from a fuel-consuming engine, which includes a husk assembly associated with the shaft and providing electrical signals proportional to shaft torque, a tachometer... | 08/25/1981 |
| 4157658 | Engine horsepower measurement system An apparatus for producing an indication of the horsepower produced by a motor, engine or the like in which a load beam mounted on the motor produces a signal which is applied to a torque circuit which includes an A/D converter operating as a dual slope i... | 06/12/1979 |
| 4152645 | Method and apparatus for producing an analogue output proportional to rotational speed employing digital to analogue conversion A system and method for measuring the rotational speed of a variable speed drive shaft for a ship or the like with high accuracy over a wide range of speeds. Means associated with the shaft sense the time interval for each turn of the shaft, or fraction t... | 05/01/1979 |
| 4106334 | Torque transducer with closely coupled primary windings A system for indicating torque and/or speed of a rotatable shaft includes a transducer positioned adjacent the shaft. The transducer has two primary windings wound in a bifilar arrangement on the same magnetic core structure. The primary windings are conn... | 08/15/1978 |
| 4100794 | System for measuring torque and speed of rotating shaft A transducer is provided for fitting over a rotating shaft to produce a magnetic field about the adjacent area of the shaft when the transducer is energized with an a-c voltage. The transducer includes secondary coils which provide an output signal that v... | 07/18/1978 |
| 4064748 | Power indicating means and method for an internal combustion engine The torque produced by an internal combustion engine is measured by algebraically combining averaged cylinder pressure with inlet manifold pressure, and manifesting the sum thereof. By multiplying the summed result by a factor representing engine speed, a... | 12/27/1977 |
| 3978718 | Electronic dynamometer Device for instant, continuing meter display of relative engine torque and tachometer output together with power indication. The engine torque and power read-out derives from electro-mechanically coupling the engine to the dynamometer to sense the motion ... | 09/07/1976 |
| 3960012 | Shaft horsepower and efficiency monitoring system A system for continuously providing direct readouts of horsepower and efficiency of a rotating shaft, which includes a husk assembly associated with the shaft and providing electrical signals proportional to shaft torque, a tachometer for providing electr... | 06/01/1976 |
