Abstract: A threaded joint is adapted for tubes where the stress or the strain concentration hardly occur at a threaded corner portion of box side even when the threaded joint receives repeated tensile-compressive forces or repeated bending forces. In a radial seal type threaded joint, tensile efficiency TE (%) defined by a ratio Sc/Sp between a cross-sectional area Sc, an area of Critical Cross Section (CCS) including a portion where a tensile stress and a strain become the highest in a tube circumferential cross section of a box and a cross-sectional area Sp of a tube body satisfies formula TE (%)?2.25×t/?+99.9 having a ratio t/? between an internal thread height t of the box and a radius of curvature ? of a corner portion of internally-threaded bottom load surface side.

Abstract: An operation device includes an operation unit including an operation body worked by an operator's manipulation; a position detecting part detecting a position of the operation body; and a display unit displaying a position of the operation body. The display unit includes an operation member, a supporting body, and a movable load applying mechanism including a movable member, a magnetic generating mechanism, a magnetorheological fluid, and an operation controlling part. The display unit includes a display part displaying the operation position. A display controlling part PS controls a display. A controller is included to control the operation controlling part and the display controlling part. In a control method of the operation device, the controller controls to display a state of the operation position of the operation body on the display part.

Abstract: In a joint for oil country tubular goods, a pitch change is made such that an internally-thread pitch has the same value as an externally-thread pitch from a thread end portion on a box end side to a pitch change position taken on a box center side with respect to a position away from the thread end portion by ½ of an entire length of the threaded portion, and the internally-thread pitch is changed to a value less than the externally-thread pitch at the pitch change position so that a thread gap is gradually decreased from the pitch change position to a position of the thread end portion on the box center side, and the thread gap is eventually set to a value which is 0.2 to 0.8 times as large as the thread gap before the pitch change is made.

Abstract: A manipulation device has a manipulation body operated by the manipulator in a manipulation direction, a support body freely supporting the operation of the manipulation body, and a movable load imparting mechanism imparting a load to the manipulation body. The movable load imparting mechanism has a movable member engaged with the movable axis of the manipulation body, a magnetism generating mechanism having a coil that generates a magnetic field and a first yoke provided so as to enclose the coil, and a magnetic viscous fluid, its viscosity changing according to the strength of a magnetic field. The magnetic viscous fluid is filled in a first gap between the first yoke and the movable member. In the gap, a first buffering layer not harder than the movable member is provided on at least one of the opposing plane of the first yoke and the opposing plane of the movable member.

Abstract: A manipulation device has a manipulation body rotationally operated by the manipulator, a support body rotatably supporting the manipulation body, and a rotational load imparting mechanism. The rotational load imparting mechanism has a movable member engaged with the rotational axis of the manipulation body, a magnetism generating mechanism facing the movable member with a gap intervening, and a magnetic viscous fluid, its viscosity changing according to the strength of a magnetic field. The magnetism generating mechanism has a coil generating a magnetic field and a first yoke provided so as to enclose the coil. The first yoke has a first opposing part and second opposing part, which are separated by slits, on a side facing the movable member. The magnetic viscous fluid is filled in the gap, which is between the first opposing part and the movable member and between the second opposing part and the movable member.

Abstract: A threaded joint for an oil country tubular goods includes pins each of which occupies a pipe end portion of a steel pipe for an oil country tubular goods, and includes an externally-threaded portion, a nose extending toward a pipe end side from the externally-threaded portion, and a shoulder forming a distal end of the nose; and a box including internally-threaded portions each forming a threaded portion by being threadedly joined with the externally-threaded portion, and shoulders brought into contact with the shoulders of the pins, wherein the pins and the box being joined to each other by the threaded joining so that portions between the threaded portions and the shoulders are brought into metal-to-metal contact with each other to thereby form seal portions at the contact portions, and the shoulders of the pins and the shoulders of the box forming shoulder faces are brought into contact with each other at the time of make-up of the threaded joint, and a ratio of a chamfer length of pin thread to a thread

Abstract: A premium threaded joint has a pin-side shoulder angle ?1, a box-side shoulder angle ?2, a seal interference quantity ? and a seal point distance xp satisfying ?2??1=?×?/xp, ?=7 to 14, and a pin distal end thickness tp1 defined by a difference Re?Ri between a radius Re of a pin most distal end portion and an inner radius Ri of a pin distal end portion is 0.25 times or more as large as a pin raw pipe thickness tp0.

Abstract: The present disclosure makes it possible to perform a failure diagnosis of an electric two-wheeled vehicle easily, conveniently, and immediately. The electric two-wheeled vehicle includes an electric equipment unit having an IC tag and a host unit. The host unit is capable of communicating with the IC tag, and obtains failure information of the electric equipment unit while electric power is supplied from the battery to the electric equipment unit. The information communication terminal obtains the failure information by communicating with the electric two-wheeled vehicle in a non-contact manner, and transmits the failure information to the server via the network. The server performs a failure diagnosis on the electric two-wheeled vehicle based on the failure information.

Abstract: An input device includes a first part and a second part configured to move relative to each other according to an input operation, a magnetic viscous fluid whose viscosity changes according to a magnetic field, and a magnetic-field generator that generates the magnetic field applied to the magnetic viscous fluid. The second part includes a first surface and a second surface that are arranged in a direction orthogonal to a direction of relative movement between the first part and the second part. Gaps are formed between the first surface and the first part and between the second surface and the first part, and the magnetic viscous fluid is present in at least a part of the gaps.

Abstract: A rotating body is rotatably supported on a holding section. The holding section includes a rotation detection unit, a torque-applying unit, and a brake-applying unit. The torque-applying unit includes an A-phase torque-applying coil and a B-phase torque-applying coil, and a resistance torque and a pull-in torque applied to a rotor (magnet) are caused to vary as a result of controlling supply of current to each of the coils. In addition, a braking force can be controlled by supplying current to a brake-applying coil included in the brake-applying unit.

Abstract: A threaded pipe joint, when acted upon by a tensile load, does not break on the female thread-side of a first thread section of a second thread series that extends from an intermediate shoulder. The threaded pipe joint reliably undergoes tensile rupture on the female thread-side of a first thread section of a first thread series, which is the original critical cross-section site. The threaded pipe joint is configured so that when the male and female threads of the intermediate shoulder are screwed together, the load flank-side thread gaps L1G and L2G of a first thread series, which is the radially inward thread series, and a second thread series, which is the radially outward thread series, on the two sides of the intermediate shoulder always satisfy the relationship L1G<L2G.

Abstract: A threaded joint for heavy-walled oil country tubular goods can both ensure sealability and prevent galling in a state where a high external pressure is also applied to the threaded joint in addition to a high compressive force. A surface of a pin side forming a seal portion and a surface of a box side forming a seal portion are formed into a convex curved surface and a tapered surface, respectively. A seal thickness ts of the pin is 15 mm or less, a shape parameter ts/D (D: outer diameter of a pin raw pipe portion) is 0.045 or more, and a complete thread length ratio L/t (L: complete thread length of the pin, t: wall thickness of the pin raw pipe portion) is 4.0 or less.

Abstract: A threaded joint for steel pipes that includes a pin and a box. The pin has an externally threaded portion, a nose, and a shoulder portion. The box has an internally threaded portion, a sealing surface, and a shoulder portion. The outer circumferential surface of the nose of the pin has an outward convex curved shape, and the sealing surface of the box has a tapered shape. Additionally, the cross-sectional area of the pin at a seal point is 35% or more of the cross-sectional area of an original pipe portion corresponding to an unprocessed portion of the pin, the seal point being a portion on the pin that first comes into contact with the sealing surface of the box when the pin and the box are joined.

Abstract: Provided is a sensing system that performs set control with high sensing accuracy. The sensing system that outputs an object signal includes a solid-state imaging device that senses a first physical target from an object and a second physical target different from the first physical target, and an arithmetic operation unit that calculates an object signal using a first signal from the first physical target and a second signal from the second physical target. The arithmetic operation unit calculates an object signal using a reference signal from a device mounted with the sensing system.

Abstract: A threaded joint is adapted for tubes where the stress or the strain concentration hardly occur at a threaded corner portion of box side even when the threaded joint receives repeated tensile-compressive forces or repeated bending forces. In a radial seal type threaded joint, tensile efficiency TE (%) defined by a ratio Sc/Sp between a cross-sectional area Sc, an area of Critical Cross Section (CCS) including a portion where a tensile stress and a strain become the highest in a tube circumferential cross section of a box and a cross-sectional area Sp of a tube body satisfies formula TE (%)?2.25×t/?+99.9 having a ratio t/? between an internal thread height t of the box and a radius of curvature ? of a corner portion of internally-threaded bottom load surface side.

Abstract: The present disclosure makes it possible to perform a failure diagnosis of an electric two-wheeled vehicle easily, conveniently, and immediately. The electric two-wheeled vehicle includes an electric equipment unit having an IC tag and a host unit. The host unit is capable of communicating with the IC tag, and obtains failure information of the electric equipment unit while electric power is supplied from the battery to the electric equipment unit. The information communication terminal obtains the failure information by communicating with the electric two-wheeled vehicle in a non-contact manner, and transmits the failure information to the server via the network. The server performs a failure diagnosis on the electric two-wheeled vehicle based on the failure information.

Abstract: A threaded joint for heavy-walled oil country tubular goods can both ensure sealability and prevent galling in a state where a high external pressure is also applied to the threaded joint in addition to a high compressive force. A surface of a pin side forming a seal portion and a surface of a box side forming a seal portion are formed into a convex curved surface and a tapered surface, respectively. A seal thickness ts of the pin is 15 mm or less, a shape parameter ts/D (D: outer diameter of a pin raw pipe portion) is 0.045 or more, and a complete thread length ratio L/t (L: complete thread length of the pin, t: wall thickness of the pin raw pipe portion) is 4.0 or less.

Abstract: In the threaded joint for pipes, a coating having a Vickers hardness greater than or equal to 310 is formed on a threaded portion of the box and an inner face of the box corresponding to a seal portion. The seal interference amount ratio ?/D of the seal portion in a pipe circumferential direction is greater than or equal to 0.002, where D is a seal diameter defined as an outside diameter of the pin at a seal point that is a point on the outer peripheral face of the nose of the pin at which the outer peripheral face first comes into contact with the inner peripheral face of the nose of the box and ? is an interference amount defined as an amount by which the outside diameter at the seal point is reduced by the box when the pin and the box are threadedly connected with each other.

Abstract: A premium threaded joint has a pin-side shoulder angle ?1, a box-side shoulder angle ?2, a seal interference quantity ? and a seal point distance xp satisfying ?2??1=?×?/xp, ?=7 to 14, and a pin distal end thickness tp1 defined by a difference Re?Ri between a radius Re of a pin most distal end portion and an inner radius Ri of a pin distal end portion is 0.25 times or more as large as a pin raw pipe thickness tp0.

Abstract: In a joint for oil country tubular goods, a pitch change is made such that an internally-thread pitch has the same value as an externally-thread pitch from a thread end portion on a box end side to a pitch change position taken on a box center side with respect to a position away from the thread end portion by ½ of an entire length of the threaded portion, and the internally-thread pitch is changed to a value less than the externally-thread pitch at the pitch change position so that a thread gap is gradually decreased from the pitch change position to a position of the thread end portion on the box center side, and the thread gap is eventually set to a value which is 0.2 to 0.8 times as large as the thread gap before the pitch change is made.