Nitta Corporation

Nara-shi, Japan

Nitta Corporation

Nara-shi, Japan

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Patent
Nitta Corporation | Date: 2017-03-22

An endless flat belt includes an inner rubber layer 1, a cord core 11 buried in the inner rubber layer 1 and spirally wound at a predetermined pitch in a width direction of the belt, and a reinforcement fabric 2 stuck to the inner rubber layer 1. The cord core comprises polyamide fiber. Opposite ends of the reinforcement fabric 2 are connected with each other into an endless form by adhesion or sewing. A surface rubber layer 3 is stuck to a surface of the reinforcement fabric 2 which is opposite a surface thereof stuck to the inner rubber layer 1.


Patent
Nitta Corporation | Date: 2017-01-30

A shaft structure installed in a shaft capable of making a power-transmission includes a male component having splines and spline bottoms on an outer periphery, a female component having splines and spline bottoms on an inner periphery and allows the male component to be slidably inserted in an axial direction thereby making up the shaft structure, and an elastic member covering the outer or inner periphery of the male or female component, wherein the female component has substantially U or V-shaped cross-section grooves on the outer periphery as opposed to splines, and a shape defined by the spline of the female component and the groove is such a shape that when the male or female component is twisted and a stress is applied to the spline in a direction around the shaft, the spline could be elastically deformed and absorb a maximum design stress within an elastic region.


Patent
Nitta Corporation | Date: 2017-06-07

A shaft structure installed in a shaft capable of making a power-transmission includes a male component having splines and spline bottoms on an outer periphery, a female component having splines and spline bottoms on an inner periphery and allows the male component to be slidably inserted in an axial direction thereby making up the shaft structure, and an elastic member covering the outer or inner periphery of the male or female component, wherein the female component has substantially U or V-shaped cross-section grooves on the outer periphery as opposed to splines, and a shape defined by the spline of the female component and the groove is such a shape that when the male or female component is twisted and a stress is applied to the spline in a direction around the shaft, the spline could be elastically deformed and absorb a maximum design stress within an elastic region.


Patent
Nitta Corporation | Date: 2017-08-09

A heat-insulated pipe assembly (1) includes a pipe (2) allowing a fluid to flow therethrough, and a heat insulating member (3) covers at least a part of the pipe (2). The pipe (2) is used in an exhaust gas purification system using an SCR catalyst. The heat insulating member (3) has a closed-cell structure and suppresses an increase in a temperature of the fluid due to heat exchange with air. In the exhaust gas purification system using the SCR catalyst, the interior of the pipe (2) is thermally insulated from the exterior by the heat insulating member (3). Thereby an increase in the temperature of the fluid flowing through the pipe (2) due to heat exchange with air is suppressed.


There are provided an easily producible structure holding catalyst particles used for production of carbon nanotubes, and a method for producing the same. The method for producing the structure (11) holding catalyst particles of the present invention used for production of carbon nanotubes includes a step of forming a catalyst particle forming layer (3) containing Si, Al, and Fe, and a step of performing a heat treatment on the catalyst particle forming layer (3) in an atmosphere containing oxygen, to form catalyst particles (2) containing Fe. The catalyst particles are held by the catalyst particle forming layer so that the catalyst particles are partially embedded in the catalyst particle forming layer (3). The size and the number of the catalyst particles (2) containing Fe are controlled by adjusting the amount of oxygen contained in the atmosphere for the heat treatment. Thus, the structure (11) holding catalyst particles is formed easily.


Patent
Nitta Corporation | Date: 2016-03-25

A male member and tool changer for downsizing and preventing damage to proximity sensors; a male member includes a cam adapted to pivot between an engagement position at which the cam engages with a lock pin of a female member and a disengagement position at which the cam moves out of the engagement, and a cylinder unit adapted to pivot the cam between the engagement position and the disengagement position. A first proximity sensor and the second proximity sensor are assembled onto a cylinder sidewall of the cylinder unit and first and second detection surfaces of the proximity sensors are revealed in a cylinder chamber. The first detection surface is placed at a position facing on a piston when the cam is located at the disengagement position and the second detection surface is placed at a position facing on the piston when the cam is located at the engagement position.


Patent
Nitta Corporation | Date: 2016-06-29

There is provided a resin composite material in which problems, such as a decrease in mechanical strength of a resin and a decrease in processabilities due to an increase in resin viscosity, are overcome by using a small amount of CNTs, and in which, in spite of using a small amount of CNTs, the functions derived from the formation of a composite of CNTs and other effective functions can be exhibited. The resin composite material comprises: a resin used as a base material; and a plurality of CNTs, the plurality of CNTs forming a composite with the resin, wherein the concentration of the CNTs relative to the base material is 2.0% by volume or less; and when volume resistivity of a molded test piece of the resin composite material is measured at a plurality of predetermined points on a surface of the test piece by a four-point probe method, a ratio of a maximum value R1 of the volume resistivity to a minimum value R2 thereof is 4.0 or less.


Patent
Nitta Corporation | Date: 2016-03-28

A connector apparatus which can keep an electrical connection between signal pins in good condition; when a male member and female member are coupled together, first bumps of a first contact portion and second bumps of a second contact portion are brought into contact with each other, electrically connecting the first signal pins wand second signal pins with each other. Measures are taken to bring tops and ridge lines of the second bumps into contact with lateral faces of the first bumps. Also, the first signal pins and second signal pins are configured to be pivotable. During connection, contact area is increased by contact between the lateral faces of the first bumps and the tops and ridge lines of the second bumps, causing rubbing between the lateral faces and the tops and ridge lines, and thereby pushing aside and rubbing off sticking spatter, oxide films, contamination, and the like.


Patent
Nitta Corporation | Date: 2016-05-04

Provided is a rack manufacturing method capable of easily manufacturing even a rack such as a helical rack or a herringbone rack that is more difficult to work than a spur rack. A rack manufacturing method comprising a step for laminating a plurality of thin plates (3) in each of which rack teeth are formed, the rack manufacturing method comprising: a step for laminating and securing the thin plates (3) to each other while the axial positions of the rack teeth of the thin plates (3) adjacent to each other are displaced; and a step for covering the rack teeth (2) of the laminated thin plates (3) with a member having excellent wear resistance and rub resistance.


Patent
Nitta Corporation | Date: 2016-04-13

A thermosensitive adhesive contains a side chain crystal polymer having a melting point of 20-30C, and a tackifier. The side chain crystal polymer is obtainable by adding a metal chelate compound in the following amount of addition (A) into the following copolymer, followed by a crosslinking reaction. Adhesive strength is to be deteriorated at a temperature below the melting point. The copolymer is obtainable by polymerizing 25-30 parts by weight of (meth)acrylate having a straight-chain alkyl group having 16 to 22 carbon atoms, 60-65 parts by weight of (meth)acrylate having an alkyl group having 1 to 6 carbon atoms, 1-10 parts by weight of a polar monomer, and 1-10 parts by weight of a reactive fluorine compound. The amount of addition (A) is 3-10 parts by weight with respect to 100 parts by weight of a copolymer.

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