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| Number | Title | Issue Date |
| 7237444 | Torque cell for determining a torque load on a rotary member A torque detection system is provided for detecting torque applied to a rotary shaft. A spring element is connected to an input and output shaft. As torque is applied to the shaft system, the input shaft is rotationally offset from the output shaft and a sensing sys... | 07/03/2007 |
| 7239728 | Fingerprint recognizing display and operating method thereof A fingerprint recognizing display system including fingerprint recognizing means in a panel of a display apparatus and an operating method thereof, wherein a fingerprint of an user is read and a program supported by a computer is allowed to be operated only if the r... | 07/03/2007 |
| 7104146 | Position sensor comprising elastomeric material The present invention relates to transducers for converting the spatial position of an object into an electrical signal, more specific to a novel position sensor which has advantages of simplicity, long-term stability and durability. According to the invention, a po... | 09/12/2006 |
| 6955097 | Radial movement capacitive torque sensor A radial movement capacitive torque sensor includes a pair of concentric capacitor plate rings lying in a common plane, a capacitor plate ring facing the pair of concentric capacitor plate rings, and a paddle assembly disposed between the pair of concentric capacito... | 10/18/2005 |
| 6948384 | Coupler for torque sensor A coupler acts as an interface between a torque element of a torque sensor and a shaft receiving an applied torque. A portion of the shaft is allowed to twist freely inside the element, and the coupler transfers a portion of the torsion forces in the shaft to the el... | 09/27/2005 |
| 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 |
| 6917695 | High contrast, low distortion optical acquisition system for image capturing Disclosed is an apparatus for forming a high contrast image of a patterned object, such as a fingerprint, including a first lens having a light receiving surface and a viewing surface and a second lens adjacent to the viewing surface of the first lens. A light sourc... | 07/12/2005 |
| 6892590 | Single-balanced shield electrode configuration for use in capacitive displacement sensing systems and methods A capacitive encoder includes a signal-balanced shield electrode configuration that does not require electrical ground connection or active sensing and control in order to maintain the shield electrode(s) at a sufficiently constant voltage during capacitive position... | 05/17/2005 |
| 6772646 | Differential capacitive torque sensor A differential capacitive torque sensor for a continuously rotating shaft such as the steering column of an automobile provides an apertured metal cage shielding a dielectric rotor. They are respectively mounted on opposite sides of a split shaft connected by a tors... | 08/10/2004 |
| 6601462 | Capacitive torque sensor and method of detecting torque A dielectric layer 32 variable in dielectric constant in dependence upon the strain is formed on at least a part of an outer peripheral surface of a bar 31 having a circular cross section. Interdigital electrodes are faced to the dielectric layer to there... | 08/05/2003 |
| 6581481 | Capacitive extensometer The present invention provides for measurements of the principal strain magnitudes and directions, and maximum shear strain that occurs in a porous specimen, such as plastic, ceramic or porous metal, when it is loaded (or subjected to a load). In one embo... | 06/24/2003 |
| 6564654 | Vertical movement capacitive torque sensor A vertical movement capacitive torque sensor for a rotating shaft such as the steering column of an automobile includes dielectric vanes interposed between capacitor plates which are moveable proportional to the angular displacement of two shaft portions ... | 05/20/2003 |
| 6401551 | Fingerprint reading device A fingerprint reading device is provided, which is capable of enhancing a versatility when actually used, increasing a productivity and reducing costs. The fingerprint reading device comprises an electrostatic capacity type fingerprint reading sensor prov... | 06/11/2002 |
| 6370968 | Unconnected capacitor type torque sensor A torque sensor having a simple structure and free from a torque detection error. The torque sensor comprises an elastic member for connecting a first shaft to a second shaft and generating torsion displacement between the first shaft and the second shaft... | 04/16/2002 |
| 6007728 | Design of a novel tactile sensor An apparatus for sensing an applied force comprising a deflectable bridge, formed in a substrate and spanning a recessed area. The deflectable bridge also has a sensing element. The force is applied to the bridge and in response thereto, an output charact... | 12/28/1999 |
| 5693886 | Pressure sensor A pressure sensor, having a simple structure for accurately measuring any one of pressure and weight, is provided. The pressure sensor includes a pair of electrode layers and a dielectric layer. The dielectric layer is composed of a rubber elastic body po... | 12/02/1997 |
| 5046371 | In-line rotating capacitive torque sensor A method and apparatus for measuring torques developed along a rotating mechanical assembly comprising a rotating inner portion and a stationary outer portion. The rotating portion has an electrically-conductive flexing section fitted between two coaxial ... | 09/10/1991 |
| 5010775 | Capacitive sensor of displacement and twist angle sensor including at least one such capacitive sensor Disclosed are capacitive sensors designed to measure the very low-amplitude displacements of two zones with respect to each other. It comprises a capacitive element formed by two elements that are fitted to each other by a shrink-on method, and respective... | 04/30/1991 |
| 4972725 | Torsion angle capacitive sensor and torque measuring The disclosed sensor has a sleeve which forms a section of an engine shaft. Pairs of plane electrodes, parallel to the axis of the shaft, are arranged in the sleeve. The two electrodes of one and the same pair are respectivley soldily joined to the ends o... | 11/27/1990 |
| 4941363 | Sensor for measurement of the torque acting on a rotating shaft A sensor for measuring the torque acting on a rotating shaft has two electrode structures which are respectively mechanically coupled to two axially spaced points on the shaft to be measured so that a relative movement between the two electrode structures... | 07/17/1990 |
| 4890501 | Torque transducer for electric motors The invention is a mechanism that measures, at any rotational speed, the torque transmitted from an electric motor rotor to an motor shaft and transfers the electrical characteristics representing the measured motor torque to slip rings external to the mo... | 01/02/1990 |
| 4866993 | Torque transducer for rotating machines The torque transducer for rotating machines enables precise measurement of the torque transmitted between a torquing means and a driven load at any rotational speed. A torsionally compliant means is concentrically attached between the torquing means and l... | 09/19/1989 |
| 4862752 | D.C. excited capacitive shaft rotation transducer A capacitive transducer for measuring the rotation of a shaft including relatively movable rotor and stator elements. A unique arrangement of capacitive plates is mounted on the stator and rotor for producing a signal indicative of shaft rotation using di... | 09/05/1989 |
| 4785675 | Method of and device for detecting torque The present invention relates to a method of and a device for detecting torque, and more particularly to a method of and a device for detecting torque which are suitable for use at the time of a high-velocity rotation or for detecting a very small torque.... | 11/22/1988 |
| 4522278 | Torque sensor A torque sensor generates an electric signal representing a change in the state of electromagnetic or electrostatic coupling between first and second rotors coupled together by a torsion spring. The change is caused with relative rotation of the two rotor... | 06/11/1985 |
| 4448275 | Torque sensor A torque sensor generates an electric signal representing a change in the state of electromagnetic or electrostatic coupling between first and second rotors coupled together by a torsion spring. The change is caused with relative rotation of the two rotor... | 05/15/1984 |
