209results about How to "Accurate and reliable positioning" patented technology

A tissue penetrating catheter that is usable to advance a tissue penetrator from within a blood vessel, through the wall of the blood vessel to a target location. The catheter includes at least one stabilizing device thereon for stabilizing catheter prior to advancing the tissue penetrator. The tissue penetrator may extend through a lumen in the body of the catheter and project transversely through an exit port. The stabilizing device may be located closely adjacent to the exit port, or may surround the exit port. The stabilizing device may be one or more balloons, or other mechanical structure that is expandable into contact with the inner luminal wall of the blood vessel. Desirably, the exit port is forced into contact with the blood vessel wall to shorten the distance that the tissue penetrator projects from the catheter body to the target location. The catheter is particular useful for forming blood flow tracts between blood vessels, in particular in coronary revascularization procedures. Methods of utilizing such a catheter to bypass an arterial obstruction is also disclosed.

A liquid container detachably mountable to a mounting portion of an ink jet recording apparatus in a slot-like mounting configuration where the liquid container is supported between a pair of engaging portions that respectively engage with a corresponding pair of locking portions on the mounting portion of the recording apparatus. The liquid container is supported in an upright configuration and includes a display portion on an upper side thereof, and a light emitting portion which emits light for display by the display portion. Because the display portion is disposed on an upper side, a user can confirm the display despite the mounting arrangement of the liquid container in the recording apparatus.

An optical device mounted substrate assembly includes a ceramic substrate having a first recess, an optical device mounted on the ceramic substrate and having one of a light emitting portion and a light receiving portion, the optical device being to be optically connected to one of an optical waveguide and an optical fiber connector in way as to align optical axes of the optical wave guide or the optical fiber connector with each other, a resin layer disposed in the first recess and having a second recess smaller in diameter than the first recess, and an alignment guide member fitted in the second recess and having a protruded portion protruding from a front surface of the ceramic substrate and fittingly engageable in an alignment hole of one of the optical waveguide and the optical fiber connector. A fabrication method of such a substrate assembly is also provided.

A positioning system adjusts a position of an optical element within an optical device, such as a variable-zoom lens system. A frame supports the optical element, and an elongated surface of each of one or more elongated support structures supports the frame. The frame also supports one or more piezoelectric actuators that, respectively, engage one of the elongated support structures. A controller supplies a control signal to activate each of the one or more actuator modules. Upon activation, a piezoelectric element of each of the activated actuator modules applies a combination of a first force and a second force to an elongated surface of the respective elongated support structures to position the frame along the elongated surface. The combination of forces applied by the piezoelectric element advances the piezoelectric actuator module along the elongated support structure.

The invention relates to a polarizing beam splitter device, an interferometer module system, a lithographic apparatus, and a device manufacturing method. The polarizing beam splitter device includes an optical element and a polarizing beam splitter layer. The optical element includes a retroreflector surface having three mutually perpendicular faces of high optical quality, a radiation beam passage surface and a handling surface. By designing the optical element, in particular the handling portion, to the shape of a beam splitter element, such as a prism, the handling portion, and thus the polarizing optical beam splitter device etc. itself, may be made more compact and with fewer surfaces to be polished and/or antireflection-coated. The positioning of the parts in a beam splitter is more reliable. Devices, systems in which the polarizing beam splitter device has been incorporated, such as a polarizing beam splitter device with quarter wave plates and a reference mirror fixed thereto, may also be made more compact, accurate and reliable.

Position finding system having a sensor unit and a transmitter unit. The sensor unit comprises a first RFID transponder reader unit, a first inductive detector unit, and an analysis unit connected to the RFID transponder reader unit and the inductive detector unit; the transmitter unit comprises an RFID transponder and a metallic material. The sensor unit is movable relative to the transmitter unit. The RFID transponder reader unit is configured for absolute position finding and outputs a first position value, and the inductive detector unit is configured for absolute position finding and outputs a second position value. The analysis unit is configured to determine, from the data acquired from the transmitter unit, an absolute position of the sensor unit from the first and second position values.

A gripper (42) for gripping an object (14), intended for a transfer device includes two jaws (64, 66). Each of the jaws includes: a recess (92), and a first clamping portion (94) and a second locking portion (96). The first clamping portion (94) of each jaw (64, 66) of the gripper (42) includes a supporting surface and, when the gripper (42) is closed around an object (14) occupying a predetermined reference position, the supporting surface is intended to engage with a portion of a bearing surface of a radial collar of the object.

The invention belongs to a component of a locking structure of a nuclear fuel assembly, particularly relates to a joint of an upper tube socket of a nuclear fuel assembly. The invention comprises an upper tube socket and a joint positioned in the upper tube socket, wherein a convex shoulder, a convex lug and a boss are arranged on the joint, a locking ring with a cylindrical hollow structure is also installed in the upper tube socket, the lower end of the locking ring is an inwards convex step, the upper end of the locking ring is provided with an outwards convex component which is matched with a mounting groove at the upper end of the upper tube socket, and the step of the locking ring is clamped in a groove formed between a convex tongue and the convex lug on the joint. Compared with the detachable upper tube socket of the domestic traditional nuclear fuel assembly, the structure is simple, the positioning is accurate and firm, a loose component can not be generated in the processes of disassembly and assembly, and the safety and the reliability are higher. The invention does not have spare parts, is convenient and quick for removing and reassembling the upper tube socket, saves the man-hour and has favorable maintainability.

A host computer 80 for wholly controlling an electronic component mounting line displays a surface side image and a reverse side image which respectively show a surface side and a reverse side of a board having components mounted thereon, with the images being superposed; displays components mounted on the surface side of the board and components mounted on the reverse side in visually different modes; and designates and determines the positions of support places of a backup device on the displayed superposed image (step 108).

The invention relates to a navigation system for dental and cranio-maxillofacial surgery, comprising a surgical handpiece (2), an imaging unit (4) which is movably attached to the surgical handpiece (2), and a marker member (6; 44, 46) which is attachable to a cranial bone, a facial bone (26), a tooth or teeth of a patient. The marker member (6; 44, 46) comprises a plurality of marker elements (8, 10; 46) which are detectable by the imaging unit (4). Further, the invention relates to a positioning tool (40) for use with the navigation system, wherein the positioning tool (40) is configured for positioning the marker member (44, 46) on a patient's cranial bone, facial bone (26), tooth or teeth and comprises a die element (42) and the marker member (44, 46). The marker member (44, 46) comprises a deformable material (44), the deformable material (44) is releasably received in the die element (42) and the plurality of marker elements (46) are arranged on a surface of the deformable material (44) which faces the die element (42), The invention further relates to a navigation method for dental and craniomaxillofacial surgery using the navigation system and to a method of positioning a marker member (44, 46) on a patient's cranial bone, facial bone (26), tooth or teeth using the positioning tool (40).

An apparatus including a portable receiver with an acoustic sensor and a magnetic field sensor is adapted for locating a fault in an underground electrical line by evaluating ground-borne acoustic signals and electromagnetic signals emitted from a succession of sparking arc-overs caused at the fault location by voltage pulses fed into the electrical line. The apparatus further includes an arrangement for eliminating interference noises from the acoustic signals, wherein the acoustic received signals are delivered to and stored in a memory, and then a respective acoustic signal is processed with reference to a previous stored acoustic signal by a processing algorithm in a processing unit. Start time points of the individual acoustic signals are synchronized with reference to associated electromagnetic signals. A result of the processing algorithm is supplied to an evaluating unit.

The invention provides a fuse mounting structure. The fuse mounting structure comprises an electric appliance box main body and a fuse holder, wherein slots are formed in the two sides of the electric appliance box main body; first bosses and second bosses are arranged inside the slots; the fuse holder comprises a fuse mounting part, clamping parts positioned on the two sides of the fuse mounting part, and two insertion parts positioned below the fuse mounting part; the insertion parts comprise sliding chutes with sealed upper ends and lower ends, and bulges protruded in the directions far away from the sliding chutes; the insertion parts of the fuse holder are inserted in the slots of the electric appliance box main body; the second bosses are positioned in the sliding chute; under the working condition, the first bosses are buckled with the bulges, and meanwhile the second bulges are not in contact with the lower ends of the sliding chutes; under the out-of-service condition, the first bosses squeeze the bulges to enable the insertion parts to be deformed towards the sliding chutes, and meanwhile the second bosses are in contact with the lower ends of the sliding chutes. The fuse mounting structure disclosed by the invention is convenient to operate and high in safety.

The invention relates to a method and system for reading data on a data layer (105) of an information carrier (101) comprising one or more servo marks (108, 109) positioned relative to said data layer (105), the system comprising: probe array generation means (104, 102) for generating a probe array comprising an array of light spots (103) intended to be applied to said information carrier (101) so as to generate output beams representative of said one or more servo marks (108, 109) and said data, wherein the distance between the focal point of one or more light spots of a portion of said probe array and a respective portion of said information carrier corresponding to at least one servo mark is different to the distance between the focal points of the light spots of the rest of the probe array and the rest of said information carrier; an image sensor (106) for receiving said output beams and generating a corresponding image; means (116) for deriving a contrast value in respect of at least of a portion of said image corresponding to said at least one servo mark (108, 109) and generating a control signal (125) derived from said contrast value, said control signal (125) being for application to actuation means (AC6) for adjusting the distance between said information carrier (101) and said array of light spots (103).

The invention discloses a clamp used for self-positioning of the processing surfaces. The clamp is provided with a central positioning hole (15) and a central positioning bolt (9); when a workpiece (18) is positioned on the clamp, the central positioning bolt (9) is inserted into the central positioning hole (15) and the central through hole (7) of the workpiece (18) at the same time, so as to lead the central positioning hole (15) and the central through hole to be coaxial; the central positioning bolt (9) is removed when the workpiece (18) is being clamped and processed. The invention also discloses an operation method used for the clamp. By adopting the technical proposal and using the self-positioning of the processing surfaces, the positioning is exact and reliable; the usage is convenient and fast in combination with the clamping of the cylinder; by adopting the steps of initial positioning and precise positioning, the positioning is convenient and the final poison is exact; a plurality of processing surfaces can be processed by one-step clamping, and the position precision is easier to be ensured.

The invention relates to a coin blank conveying and positioning device for edge knurling and grooving (embossing) of coin blanks, which mainly comprises at least two rolling extrusion turntables. The coin blank conveying and positioning device is characterized in that a coin blank conveying device and a coin blank positioning device are respectively arranged in a direction perpendicular to the center link of the two rolling extrusion turntables, and the two rolling extrusion turntables are respectively provided with coin blank kick-out discharging devices. The coin blank positioning devices can be symmetrically distributed around the center in a grouping manner so as to improve production efficiency of the integral device. The coin blank conveying and positioning device meets requirements for coin blank conveying and positioning in processes of edge knurling (embossing) of special-shaped coin blanks and edge grooving (embossing) of circular coin blanks, and accordingly can not only produce special-shaped coin blank products stably but also produce circular coin blank products stably, and has the advantages of accurate and reliable conveying and positioning, wide applicability and fine universality.

The invention is a shoulder harness with an article carrier pocket, and more particularly to such a shoulder harness especially suited for accurately positioning a magnet on the body for triggering an implanted electronic device in a patient's body. The harness includes an important feature in an open-topped flexible pocket or pouch dimensioned to receive a magnet for switching a neurostimulator, with releasable fastening means for closing the open top to retain the magnet in the pocket. A first flexible pocket support strap has a length to extend around the patient's chest under the arms, with length adjusting means to adapt the strap to the size of the patient, and a quick-release fastener for releasably securing the first strap in position. The open-topped pocket has its bottom portion secured to the first strap, as by stitching, and a second flexible strap has a loop on one end slidably received on the first strap in position to extend over the patient's shoulder from the back and a free end received in a buckle carried on one upper corner portion of the pocket for adjusting the vertical position of the pocket on the patient. The length adjusting buckle may be attached, as by stitching, to the pocket by a short third strap. A gusset preferably extends from the opposite upper corner of the pocket to the first strap to assist in retaining the pocket in a substantially flat condition on the wearer's chest overlaying the implanted neurostimulator.

A clamping mechanism for welding an automobile exhaust pipe end flange comprises a base (1) and is characterized in that a flange positioning panel (2) is installed on the base (1) and connected with a supporting plate (3), a quick clamping mechanism (4) is installed on the supporting plate (3), a driving rod (5) of the quick clamping mechanism (4) is connected with a connecting plate (6) capable of performing parallel movement with the flange positioning panel (2) under the driving effect of the driving rod, an exhaust pipe positioning pin (7) capable of penetrating an exhaust pipe positioning hole of the flange positioning panel (2) is installed at the middle position of the connecting plate (6), two sides of the connecting plate (6) are respectively provided with one press claw pushing block (8), press claws (9) are installed on the flange positioning panel (2) in a pivoted mode, and the diving ends of the press claws (9) are in hinged connection with the press claw pushing blocks (8). The clamping mechanism for welding the automobile exhaust pipe end flange is simple in structure and high in welding efficiency.

The invention provides a welding and positioning jig for a flat cable. The welding and positioning jig comprises a holding handle, a connecting piece, limiting posts and positioning needles; the connecting piece is fixedly connected with the holding handle; the limiting posts are fixedly connected at two sides of the lower end surface of the connecting piece; and the positioning needles are fixedly arranged at the two sides of the lower end surface of the connecting piece and are arranged between the limiting posts. The positioning needles pass through positioning holes in the flat cable and a circuit board, so that the flat cable and the circuit board are aligned to each other and are positioned; the inserting depth of each positioning needle is limited by the limiting posts, so that the inserting depth of each positioning needle is less than the thickness of the circuit board. The welding and positioning jig for the flat cable, provided by the invention, can be used for limiting by increasing the positioning depth that each positioning needle is inserted, so that the inserting depth of each positioning needle is less than the thickness of the circuit board. Therefore, an element on the back surface of the circuit board is prevented from being damaged through the collision of the positioning needles. Meanwhile, the welding and positioning jig for the flat cable, provided by the invention, has the advantages of simple structure, relatively low cost, firmness and high efficiency of clamping and the like.

The invention discloses a method for monitoring hydrological area pollutant, and the method includes: 1, integrating a SWAT soil water evaluation model and a geographic information model, and evaluating and calculating NH4, TN, TP, COD and sediment content in the hydrology area by using area geographic information; 2: according to the content of pollutants, dividing the color of the sub-region into four levels: green, light green, yellow and red according to the classification rules of pollutants; 3: according to the content of pollutants, drawing out the change trend of pollution index of specified river and specified pollution points and sources; 4: according to the geographic information model, obtaining and adjusting of parameters of the pollution points and sources and new added pollution points and sources, and executing the step 1 until required pollution points and sources are completed; implementing data calculation, display, data output and early warning of hydrological area. The soil water evaluation model is combined with the geographic information model, which improves the calculation accuracy, solves the problem that general data model is not intuitive and is difficult to govern, so that the early warning is clear and intuitive.