Abstract: A roller screw is provided having a structure suitable for circulating rollers. The roller screw has a screw shaft 5 with a spiral roller rolling groove 5a formed on an outer peripheral surface thereof; a nut 6 with a spiral roller rolling groove 6a opposed to the roller rolling groove of the screw shaft and formed on an inner peripheral surface thereof; and a plurality of rollers 7 arranged in a load roller rolling path 9 between the roller rolling groove 5a of the screw shaft 5 and the roller rolling groove 6a of the nut 6. Inside the nut 6 is provided a roller return path 11 extending linearly in parallel with an axis line of the nut 6. To opposite end faces in an axis line direction of the nut 6 are attached direction change path forming members 13 in which direction change paths 10 to connect the load roller rolling path 9 and the roller return path 11 are formed. The roller return path 11 is twisted to rotate an attitude of each of the rollers 7 while the rollers 7 move in the roller return path 11.

Abstract: An endoscope insertion assistant probe is inserted into a body cavity prior to insertion of an insertion portion of an endoscope into the body cavity, to assist the insertion of the endoscope, and includes a flexible, elongated probe; and a distal end guiding element that is arranged at a distal end portion of the probe. The distal end guiding element is made of a thin-film resin member and expandable by fluid.

Abstract: A fluid dynamic bearing device which exhibits high bearing performance at low cost has a highly accurate bearing gap. At least a region in the outer circumferential surface of a shaft, which faces the radial bearing gap, is constituted of an electroformed part, and the region of the shaft excluding the electroformed part is constituted of a resin portion.

Abstract: A weld line formed by injection molding of a sealing member is formed at a circumferential position out of deepest portions of axial grooves, which form thinned portions of the sealing member (optimally, in a region of a cylindrical surface between the axial grooves in a circumferential direction). Thus, the sealing member is prevented from being provided with parts having locally markedly low strength, and hence damage to be caused by press-fitting is prevented.

Abstract: A method for manufacturing a multilayer printed circuit board including providing a core substrate having a penetrating-hole, forming an electroless plated film on a surface of the substrate and an inner wall surface of the penetrating-hole, electrolytically plating the substrate while moving with respect to the surface of the substrate an insulating member in contact with the surface of the substrate such that an electrolytic plated film is formed on the electroless plated film, an opening space inside the penetrating-hole is filled with an electrolytic material, and a through-hole conductor structure is formed in the penetrating-hole, forming an etching resist having an opening pattern on the electrolytic plated film, and removing an exposed pattern of the electrolytic plated film exposed by the opening pattern and a pattern of the electroless plated film under the exposed pattern such that a conductor circuit is formed on the surface of the substrate.

Abstract: An endoscope inserted-shape detecting apparatus 8 includes a sense coil unit 23 in which multiple sense coil groups of sense coil groups 23A to 23I for detecting magnetic fields generated by multiple source coils 21 in an inserted-shape detecting probe 6 are placed as a part of the endoscope inserted-shape detecting apparatus 8, a signal detecting section 33, a source coil position analyzing section 35 and a signal control section 37 that selects a magnetic-field detecting element to be used for detection of a magnetic field signal based on the magnetic field generated by each of the source coils 21 from the sense coil groups 23A to 23I in a control section based on positional information signals outputted from the source coil position analyzing section 35.

Abstract: A driving block includes a plurality of magnetic-field generating elements and a driving signal generating section, and the magnetic field generated by the plurality of magnetic-field generating elements is detected by a plurality of magnetic-field detecting elements. A shape calculating block calculates a shape of an insertion portion of an endoscope based on a frequency component corresponding to a frequency of the driving signal in a detection signal detected by the plurality of magnetic-field detecting elements. Oscillation frequency of the reference clock for deciding the frequency of the driving signal is changeably set by the frequency setting section, and the reference clock with oscillation frequency set by the frequency setting section is supplied to both of the driving block and the shape calculating block.

Abstract: Provided is a screw device capable of preventing occurrence of any elevation change at a joint between a ball return path of a circulation member and a loaded ball rolling groove of a nut. The circulation member 12 has end parts 14 and 15 each of which the periphery includes a rolling groove connecting part 22 positioned to the side of a loaded ball rolling groove 11a of a nut 11 and connected to the loaded ball rolling groove 11a of the nut 11 and a scooping part 23 positioned to the side of a ball rolling groove of a screw shaft 1 and scoops up balls 3 from a loaded ball rolling path. The rolling groove connecting part 22 of each of the end parts 14 and 15 is made of resin and formed integral with the nut 11.

Abstract: A method for manufacturing a multilayer printed circuit board including providing a core substrate having a penetrating-hole, forming an electroless plated film on a surface of the substrate and an inner wall surface of the penetrating-hole, electrolytically plating the substrate while moving with respect to the surface of the substrate an insulating member in contact with the surface of the substrate such that an electrolytic plated film is formed on the electroless plated film, an opening space inside the penetrating-hole is filled with an electrolytic material, and a through-hole conductor structure is formed in the penetrating-hole, forming an etching resist having an opening pattern on the electrolytic plated film, and removing an exposed pattern of the electrolytic plated film exposed by the opening pattern and a pattern of the electroless plated film under the exposed pattern such that a conductor circuit is formed on the surface of the substrate.

Abstract: A flatness of a part of a component formed of a resin material that faces a thrust bearing gap is easily increased. A housing (7) is injection-molded using a resin material and has a bottomed-cylindrical shape integrally including a cylindrical side portion (7a) and a flat bottom portion (7b). The resin material to be used for the injection molding of the housing (7) contains, as filler, a reinforcing fiber having a fiber diameter of 6 to 8 ?m and an aspect ratio of 10 to 40.

Abstract: Provided is a screw device capable of reducing noise generated therefrom. The screw device has a screw shaft 5 having a rolling-element rolling groove 5a spirally formed on an outer peripheral surface of the screw shaft; a nut 6 having a loaded rolling-element rolling groove 6a spirally formed on an inner peripheral surface of the nut and facing the rolling-element rolling groove 5a of the screw shaft 5 and a rolling-element return path connecting an end of the loaded rolling-element rolling groove 6a with an other end thereof; and a plurality of rolling elements 7 arranged in a rolling-element circulation path. A low-noise plate 12 is mounted on a flange 9 provided at an axial end of the nut 6 so that the low-noise plate 12 covers at least a part of an end surface of the flange 9.

Abstract: A plating method includes providing an article in a plating bath, covering a surface of the article with an insulating member in the plating bath, and electrolytically plating the article while moving one of the insulating member and the article relative to each other.

Abstract: The object is to provide a reclining device for a seat such as an automotive seat including a differential transmission mechanism (Taumel mechanism) which makes it possible to eliminate precision machining of the inner surface of an external gear into which a slide bearing is pressed, in which the freedom of design of the reclining device is not restricted by the standards of a bearing bush, and which can be manufactured at a low cost. The reclining device includes a differential transmission mechanism for adjusting the opening angle of a hinge through which the seating portion and the backrest portion of the seat are coupled together. The differential transmission mechanism includes an internal gear and an external gear having a slightly smaller number of teeth than the internal gear and meshing with the internal gear. An arcuate gap is defined between a shaft hole of the external gear and a small-diameter portion of a cam integral with a shaft of the internal gear.

Abstract: The invention relates to a ball screw device in which a screw shaft and a nut member are threadedly engaged with each other through a number of balls. In such a ball screw device, an inner surface of a cover plate contacting an end surface of a nut main body is provided with a projecting return piece adapted to be fit-engaged with a recess cut in an inner peripheral surface of the nut main body, the return piece being provided with a scoop portion for dislodging the balls from the ball rolling groove of the screw shaft and a direction switching passage for guiding the dislodged balls to the entrance of a ball return hole. The projecting return piece is divided into a first piece formed integral with the cover plate and a second piece fixed to the first piece by a curved plane including the center line of the direction switching passage.

Abstract: A source coil drive circuit section of an endoscope shape detection device includes, an oscillator that generates a sine wave and an amplifier that amplifies the sine wave and generates (drives) an alternating magnetic field to source coils through a switch section. The switch section is configured to switch a direct current to an output of the amplifier and supply to the source coils. In the source coil drive circuit section, a direct current resistance value detection section for measuring a direct current resistance value of the source coils by voltage drop when the switch section is supplying the direct current to the source coils is provided.

Abstract: An inserting shape detecting probe has a long and slender core wire, a plurality of shape detecting devices, signal lines, and an outer sheath. The plurality of shape detecting devices extended from the signal lines are fixed to the core wire at a predetermined interval. The core wire is inserted in the outer sheath. The inserting shape detecting probe has a thermal radiating member which is arranged along the outer circumference of at least one of the shape detecting devices.

Abstract: There is provided a roller screw comprising a screw shaft 1 having an outer peripheral surface in which a spiral roller rolling groove 1a is formed, a nut member 2 having an inner peripheral surface in which a spiral loaded roller rolling groove 2a is formed so as to oppose to the roller rolling groove of the screw shaft, a return pipe 4 in which a roller return passage 5 is formed so as to connect one and another ends of a loaded roller rolling passage 3 between the roller rolling groove 1a of the screw shaft 1 and the loaded roller rolling groove 2a of the nut member 2, a number of rollers 6 disposed in the loaded roller rolling passage 3 and the roller return passage 5, wherein the roller return passage 5 is twisted so that an attitude of the roller 6 changes as the roller moves in an axial direction of the return pipe 4. Such roller screw enables to provide an easy assembling and compact structure and to realize smooth circulation of the roller.

Abstract: An insertion shape detecting probe includes shape detecting elements for generating or detecting magnetic field or magnetic; signal lines connected to the shape detecting elements; supporting members that support the shape detecting elements; inner sheaths into which the signal lines and the supporting members are inserted; and an outer sheath into which the inner sheaths, the shape detecting elements, and at least one portion of the supporting members are inserted. The inner sheaths are each formed from a multiple-lumen tube that has a first lumen formed at a substantially central portion of each inner sheath and second lumens formed around an exterior periphery portion of the first lumen, and the supporting members are elongated wire rods one portion of which is arranged along exterior peripheries of the shape detecting elements in an axial direction and other portion runs through the second lumens.

Abstract: Provided is a screw device capable of reducing noise generated therefrom. The screw device has a screw shaft 5 having a rolling-element rolling groove 5a spirally formed on an outer peripheral surface of the screw shaft; a nut 6 having a loaded rolling-element rolling groove 6a spirally formed on an inner peripheral surface of the nut and facing the rolling-element rolling groove 5a of the screw shaft 5 and a rolling-element return path connecting an end of the loaded rolling-element rolling groove 6a with an other end thereof; and a plurality of rolling elements 7 arranged in a rolling-element circulation path. A low-noise plate 12 is mounted on a flange 9 provided at an axial end of the nut 6 so that the low-noise plate 12 covers at least a part of an end surface of the flange 9.

Abstract: To facilitate a connection operation between a signal processing device and an endoscope apparatus in which a processing system that performs signal processing of image pickup signals of an electronic endoscope and a processing system that calculates an insertion shape of the endoscope are integrated, a scope connector 41 of the endoscope has a connector for inputting signals from UPD coils 58, and can be connected to an endoscope system controlling device 5 via an adaptor 42 together with other video signals and the like.