40results about How to "Sufficient precision" patented technology

Methods and systems for determining position of one or more portions of a seismic streamer, which portions may be seismic receivers, are disclosed. One method includes measuring one or more characteristics of one or more steering devices positioned at known distances along a marine seismic streamer; using the measured characteristic to calculate a force on at least a portion of the streamer exerted by one or more steering devices from the characteristics; and using the calculated force to estimate position of at least a portion of the streamer. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

An LSI package having an optical interface is mounted on a surface of a photoelectric wiring board. The photoelectric wiring board and the optical interface are optically connected with sufficient precision. A wiring board side guide member including socket pins and guide pins is soldered and fixed onto the photoelectric wiring board including an optical transmission line, a guide pin, and a mirror. An optical interface side guide member having a fitting hole is glued to the optical interface. The optical interface is mounted on an interposer of the LSI package. The guide pin of the photoelectric wiring board is fitted into the fitting hole formed through the interposer. The guide pin of the guide member is fitted into the fitting hole of the guide member. As a result, position alignment between the optical interface and the photoelectric wiring board is conducted with high precision.

A halftone type phase shift mask blank including, on a transparent substrate, at least a phase shifter film having a predetermined transmittance for an exposed light and a predetermined phase difference for the transparent substrate, wherein the phase shifter film is formed by a multilayer film in which films including at least two layers having an upper layer formed on the most surface side and a lower layer formed thereunder are provided, and a thickness of the upper layer is adjusted in such a manner that a refractive index of the film to be the upper layer is smaller than that of the film to be the lower layer and a surface reflectance for the inspecting light of the phase shifter film is maximized and approximates to a maximum.

[Problem] To provide a manual surveying instrument that allows easily performing a collimating operation and allows performing a high precision measurement in a short time,

[Solution Means] The manual surveying instrument includes a collimation assist device (70) having a collimation light transmitting system that emits a collimation light (R) along a collimation axis (O) toward a target installed at a measurement point, an area sensor (80) that obtains an image of a scene captured within a field of view of a collimating telescope (3), a display unit (48) that displays the image, a collimation light detecting unit (82) that detects the target as a result of receiving the collimation light reflected on the target by the area sensor, and an arithmetic control unit (46) that displays an area (94) being within a predetermined deviation from the collimation axis and where distance measurement is possible and a symbol indicating the target on the display unit as an animation image, judges that collimation has been completed when the target has been captured, by a manual operation of the collimating telescope, within the area where distance measurement is possible to perform a distance and angle measurement, and corrects an angle measurement value according to a deviation from the collimation axis of the target.

A leveling system for a workpiece comprises a vise for holding the workpiece and a multimember support structure for positioning the vise. The multimember support structure comprises at least two joints and provides at least five independent degrees of freedom in angular motion for positioning the vise and leveling the workpiece.

In a tunnel-like region of a sterilizing tunnel, containers are advanced by means of a conveyor device. For sterilization, a heated air flow oriented vertically in the region of the containers is used, which is generated by means of a fan and a heater. To prevent particles from being torn out of a sterile filter during the heating phase, there is a provision for adapting the rpm of the fan during the heating phase. According to the invention, this rpm adaptation is done by ascertaining the requisite rotary speeds of the fan beforehand at both room temperature and the sterilization temperature, whereupon a control unit of the sterilizing tunnel, on the basis of a predetermined functional relationship, raises the rpm of the fan as the temperature of the air flow is raised.

A laser device of a so-called laser ignition is provided, in which the heat dissipation is improved between a combustion chamber window and a housing, and the cooling or temperature of the combustion chamber window is able to be adjusted within broad limits by simple modifications.

Catching grooves (34) extending in the axial direction are formed in the cylindrical outer surface of a brush base (35) that has a slender, substantially cylindrical shape and made of a twistable material. Brush attaching portions (43) of brush members (41) and blade attaching portions (47) of scraping members (42) are respectively secured in the catching grooves (34) so that axially aligned bristles (44) of each brush member (41) and an axially extending blade (46) of each scraping member (42) project from the cylindrical outer surface of the brush base (35). Receiving members (53) are respectively fitted to both ends of a shaft (51) inserted through a shaft insertion hole (39) of the brush base (35). By rotating the receiving members (53) in opposite directions, the brush base (35) is twisted in a spiral and secured. By eliminating the necessity of forming the brush base (35) in a twisted shape beforehand by means of twist extrusion molding, the invention facilitates production of the brush base (35). Adjusting the degree of twisting the brush base (35) ensures a sufficient twisting precision.

A microfluidic sensor formed by stacking a plurality of substantially non-electrically conductive layers, typically formed from thin polymer films. Certain layers may carry patterned electrodes that are arranged to permit their connection to an electrical interrogation circuit. Electrodes may be disposed in a 3-dimensional array in the sensor. A fluid path through the sensor includes an orifice sized to promote single-file travel of particles. The orifice may be defined by a tunnel passing through at least one layer. Particles entrained in an electrolytic carrier fluid may be detected, or otherwise characterized, by interrogation circuitry connected to certain embodiments of the sensor. Sensors generally include portions of a fluid path disposed parallel to the layers. Sensors may operate under the Coulter principle, and/or Stokes' shift phenomena. In certain embodiments, the sensor may be carried by a cartridge, which is adapted to couple with an interrogation platform. In any case, coupling desirably places the sensor in-circuit with operable interrogation structure, as well as with a fluid-flow control device. Structure included in a cartridge may provide fluid sample loading, routing, and storage capabilities.

This optical encoder includes a light emitting section and a plurality of light receiving elements placed so as to be aligned in one direction in an area where a light beam from the light emitting section may reach. A moving object includes a light-ON section, a light-OFF section and an index pattern section. The light receiving element outputs a first light receiving signal when the light-ON section and the light-OFF section of the moving object pass through a predetermined position corresponding to the light receiving element. The light receiving element outputs a second light receiving signal when the index pattern section of the moving object passes through a predetermined position corresponding to the light receiving element. The output section outputs an incremental channel signal indicating movement information of the moving object based on the first light receiving signal while outputting an index channel signal indicating reference position of the moving object based on the second light receiving signal. The incremental channel signal and the index channel signal are out of phase with each other.

The present invention relates to a method for reprofiling wheel disks (7) or brake disks of a railway wheel or wheelset (6), rotatably mounted in bearing housings (9), by machining using a machine tool (12), which is designed to be portable, a wheel disk (7) of the railway wheel or the wheelset (6) being pressed against backup rolls (16) on its circumference by a clamping element (14, 15), which engages on at least one bearing housing (9), at least one of the backup rolls setting the railway wheel or the wheelset (6) into rotation, while simultaneously a tool (20) machines one of the wheel (7) or brake disks. The invention also relates to a machine tool (12) for carrying out the method. This machine tool (12) has a portable support frame (11) having a clamping element (14, 15) for engaging on a closed inner and/or outer bearing housing (9) of the railway wheel or wheelset (6), and at least one backup roll (16), which may be pressed against the outer circumference of the wheel disk (7), on whose bearing housing(s) (9) the clamping element (14, 15) engages, at a mutual distance to one another opposite to the clamping element (14, 15), a drive for at least one of the backup rolls (16), and a tool (20) for machining wheel (7) or brake disks (23) of the railway wheel or wheelset (6).

Described herein is a read/write transducer for a hard disk drivewith dual actuation stage, comprising at least one hard disk and at least one suspension carrying the read/write transducer. The read/write transducer comprises a supporting body having a substantially parallelepipedal shape, a read/write head arranged on a front face of the supporting body, and a grating defined on one of the side faces of the supporting body during the process of manufacture of the read/write transducer. The grating enables measurement of the position of the read/write transducer with respect to the corresponding suspension in an optical way using a laser transmitter emitting and directing towards the grating a laser beam, and a laser receiver arranged to intercept the laser beam reflected by the grating and outputting a position signal on the basis of which it is possible to calculate, in a simple way, the position of the read/write transducer with respect to the corresponding suspension.

In a technique for dividing an object, which is to be analyzed numerically and is made up of a plurality of components, into grids to generate fundamental elements, grid setting according to the situation becomes possible, and the time required for grid division or analysis can be shortened while securing sufficient precision of analysis. This invention involves a setting step of, in a data converting process, setting an allowable range of an aspect ratio of fundamental elements for numerical analysis to each of the components, a cube dividing step of, in the data converting process, dividing each of the components into a plurality of cubes within the aspect ratio allowable range to generate a cube division model, and a grid dividing step of dividing each of the components into grids according to the cube division model to generate fundamental elements for numerical analysis.

An optical pickup apparatus for shining light on an optical disk having two recording layers and for detecting reflected light from the optical disk includes a light source, an optical system situated on a path of a light beam returning from the optical disk inclusive of light reflected by a first recording layer of the optical disk and light reflected by a second recording layer of the optical disk, the optical system including a light condensing optical unit to turn the returning light beam into a condensing light beam, and a light beam regulating unit to extract from the condensing light beam a partial light beam corresponding to part of a cross section of the condensing light beam, and one or more photo detectors, situated between a position where the light reflected by the first recording layer contained in the partial light beam is condensed and a position where the light reflected by the second recording layer contained in the partial light beam is condensed, the one or more photo detectors having a first photo detecting section to detect the light reflected by the first recording layer and a second photo detecting section to detect the light reflected by the second recording layer.

Integrated closed-loop real-time limb neuro-prosthetic system comprising an artificial limb, a microprocessor, sensors, a signal conditioner, a stimulator, at least one EMG electrode and at least one sensory feedback electrode, characterized by the fact that said sensory feedback electrode is an intraneural electrode which is adapted to be implanted in an intact and healthy portion of a nerve.

The invention relates to the contactless measurement of a linear textile formation such as yarn, thread, textile fiber, sliver, etc. in which a linear textile formation moves in a radiation flux between a radiation source and a radiation sensor consisting of a plurality of radiation-sensitive elements arranged next to each other in at least one row and in which the diameter and/or the hairiness and/or the density of the linear textile formation is determined on the basis of the number of overshadowed radiation-sensitive elements of the radiation sensor and/or on the basis of the irradiation degree of the radiation-sensitive elements. In order to measure a high degree of the total length of the moving textile formation it is proposed to match the dimensions of the radiation-sensitive elements such that the dimension of the radiation-sensitive elements of the radiation sensor in the direction of the motion of the measured linear textile formation is superior to their dimension in the direction normal to the direction of the motion of the measured linear textile formation.

An adhesive element for adhesion tests, comprising a bi-adhesive layer including a first adhesive surface, designed to co-operate in a relation of adhesion with a surface undergoing testing, and a second adhesive surface. The adhesive element further comprises a support layer having a comparative adhesion surface designed to co-operate in a relation of adhesion with the second adhesive surface. The bi-adhesive layer has a fragmented structure.

A three-dimensional image of a semiconductor device identification pattern is obtained by measuring the distance of at least one sensor to the surface of the semiconductor device. The apparatus includes a source of radiation for deriving the distance from properties of the reflected light. A unit for determining the distance and an image processing unit are used to establish the three-dimensional picture. Positional information can be achieved in a scanning movement from motors being controlled by a control unit. By applying a threshold value, a two-dimensional image is derived and by a pattern recognition algorithm, the identification pattern can be analyzed.

A system for estimating or calculating grade variations of a ground surface is provided that is convenient to use and provides data of sufficient precision for the estimating or calculating process. The system can be deployed for estimating or calculating grade variations in connection with the placement and installation of fences, gates, pools, drainage, steps, decks, patios, contour features, ponds, driveways, and other site improvements. In addition to a deployment of the system to quickly establish and/or verify elevations of outdoor features, the system can be deployed to quickly establish and/or verify elevations in a building structure for installing cabinets, countertops, or alternating current outlets.

The invention relates to a tubular element of a fall pipe used for the purpose of depositing materials underwater from a fall pipe vessel. The fall pipe element comprises a male and a female coupling part for coupling to another element of the same form. The coupling parts are provided on respectively an outer periphery and inner periphery thereof with an annular flange which is divided in peripheral direction into segments which leave recesses clear therebetween. For coupling purposes segments of a male coupling part are placed through recesses of a female coupling part and slid by rotation under segments of the female coupling part. The invention likewise relates to a fall pipe and a method for assembly thereof. The fall pipe is particularly suitable for depositing material at great water depth.

With the method in accordance with the invention at least one monitoring limit value is defined in advance for an operating variable to be monitored of the technical device. During the operation of the technical device the current value of the operating variable to be monitored is recorded at least twice at least within a finite time interval, and within the time interval a current monitoring reference value is determined by means of an interpolation between the monitoring limit value and the current value of the operating variable to be monitored. A particular advantage of the method in accordance with the invention is that monitoring of the operating variable is possible immediately after the technical device has gone into operation for the first time and that the quality of the monitoring is refined as a kind of learning process as operation proceeds.

An automatic paper feed apparatus includes a paper pickup roller (21), a paper feed roller (31) and a paper separation device (10). The paper separation device is a compound gear consisting of a first paper separation gear (11) and a second paper separation gear (12). The first and second paper separation gears are rotatably and mutually drivably coupled with each other by the engagement between a projection (13) and a protrusion (14) respectively formed thereon. The paper pickup roller and the paper feed roller are respectively actuated to rotate by the second and first paper separation gears through a paper pickup gear mechanism (23) and a paper feed gear mechanism (33, 34) each mounted on a same shaft and engaged therebetween. At the initial stage, the first paper separation gear drives the second paper separation gear to rotate, and thus the paper pickup roller and the paper feed roller are respectively actuated to rotate by the second and first paper separation gears. By then making the linear velocity of the paper feed roller to be higher than that of the paper pickup roller, a predetermined angular clearance is formed between the projection and protrusion of are separated from each other, one by one, by a predetermined interval.

A device for three-dimensional representation of horsebacks through measurement points, comprising: plural vertically telescoping and column shaped segments which are connected with a frame and which include flexible transversal elements at their upper end which flexible transversal elements are bent like an umbrella and have flexible curvatures, wherein the vertical segments are configured to be variably offset from one another in the frame and configured fixable in a temporary manner and the curvature of the transversal elements that are bent in the shape of an umbrella is adjustable and fixable in a temporary manner, wherein the transversal elements include measuring points which are configured variably arrangeable in a vertical plane through devices for adjusting the curvature of the transversal elements, and wherein the measuring points of the transversal elements are arranged in the surface of the three-dimensional contour of the horseback.