Abstract: A male rotor of a screw compressor has a cooling flow path extending in an axial direction inside a discharge-side shaft section. A groove structure is provided at at least a part of a region on a wall surface of the cooling flow path between the position of a discharge-side end face of the male rotor and a mounting position of a discharge-side bearing. The groove structure includes grooves or a groove that has a lengthwise component in a circumferential direction of the screw rotor and that are spaced apart in the axial direction. A nozzle which is a stationary member is arranged inside the cooling flow path with a gap between the nozzle and the wall surface of the cooling flow path. The nozzle is arranged in such a manner as to overlap at least a part of the groove structure in the axial direction.

Abstract: A variable focus lens device includes: a first variable focus lens; a second variable focus lens disposed behind the first variable focus lens; a third variable focus lens disposed behind the second variable focus lens; a fixed focus lens disposed behind the third variable focus lens; a first conjugate point that is disposed at a first focus before the first variable focus lens; a second conjugate point that is disposed at a fourth focus behind the fixed focus lens; and a third conjugate point that is disposed at a second focus behind the second variable focus lens, and at a third focus before the third variable focus lens, a first partial optical system is an infinite conjugate system in relation to the first conjugate point, and a second partial optical system is an infinite conjugate system in relation to the third conjugate point.

Abstract: Provided is an air compressor that suppresses a rise in delivery temperature due to a change in atmospheric pressure, and consequently improves the life of parts. The air compressor 1 includes a motor 2, a compressor main body 3 driven by the motor 2 to compress air, a delivery pressure sensor 12 that senses a delivery pressure of the compressor main body 3, an atmospheric pressure sensor 13 that senses an atmospheric pressure, and a controller 15. The controller 15 compares the delivery pressure sensed by the delivery pressure sensor 12 with a set pressure, and performs operation control based on a result of the comparison. The controller 15 corrects the set pressure such that a ratio between the atmospheric pressure sensed by the atmospheric pressure sensor 13 and the set pressure becomes a set value set in advance.

Abstract: In order to reduce operation in a rotation-prohibited frequency range and to prevent resonance in a gas compressor wherein inverter control is performed, this gas compressor has: a compressor main body that compresses a gas; a motor that rotationally drives the compressor main body; an inverter that changes the rotational speed of the motor; a check valve arranged downstream from the compressor main body; a pressure detection means that detects load-side pressure downstream from the check valve; and a control device that, in accordance with the pressure detected by the pressure detection means, controls the frequency output by the inverter.

Abstract: Disclosed is lateral pressure control of a continuously variable transmission (CVT) with a transmission ratio changed by changing groove widths of a drive pulley and a driven pulley, a drive force from a drive source being transmitted to a wheel. A control part controlling respective lateral pressures of the drive pulley and the driven pulley is provided. The control part sets an increase correction amount of the lateral pressure of the drive pulley to a first lateral pressure increase correction amount if the CVT is not in an in-gear state or a shift position is consistent with a traveling direction of the vehicle, and, sets said amount to a second lateral pressure increase correction amount smaller than the first lateral pressure increase correction amount if the CVT is in the in-gear state and the shift position is not consistent with the traveling direction of the vehicle.

Abstract: A cutting insert may include a first surface, a second surface and a third surface. The first surface may include a corner having a convex curvilinear shape and an inclined surface. The inclined surface may include a first inclined surface, a second inclined surface and a third inclined surface. The first inclined surface may be inclined at a first angle. The second inclined surface may be inclined at a second angle. The third inclined surface may be inclined at a third angle. The first inclined surface may have a concave curvilinear shape in a cross section orthogonal to a bisector of the corner. The second inclined surface may be a flat surface. The second angle may be smaller than either of the first angle and the third angle in a cross section which includes the bisector and is orthogonal to the reference plane.

Abstract: Disclosed is lateral pressure control of a continuously variable transmission (CVT) with a transmission ratio changed by changing groove widths of a drive pulley and a driven pulley, a drive force from a drive source being transmitted to a wheel. A control part controlling respective lateral pressures of the drive pulley and the driven pulley is provided. The control part sets an increase correction amount of the lateral pressure of the drive pulley to a first lateral pressure increase correction amount if the CVT is not in an in-gear state or a shift position is consistent with a traveling direction of the vehicle, and, sets said amount to a second lateral pressure increase correction amount smaller than the first lateral pressure increase correction amount if the CVT is in the in-gear state and the shift position is not consistent with the traveling direction of the vehicle.

Abstract: In a plane perpendicular to the optical axis (10) of a lens (2), the direction in which the cylindrical surface has zero curvature is the direction of generatrix of the lens (2), and the direction in which the cylindrical surface has non-zero curvature and that is orthogonal to the direction of generatrix is the direction of curvature of the lens (2). A light source (1) is disposed at the focal position (21) in the direction of generatrix on the side of the incident surface (3) of the lens (2), and emits light toward the incident surface (3) of the lens (2), the light having a difference between the divergence angle in the direction of generatrix of the lens (2) and the divergence angle in the direction of curvature of the lens (2).

Abstract: A cutting insert includes an upper surface, a lower surface, a side surface, and a cutting edge. The upper surface includes a first side part, a second side part, and a corner part located between the first side part and the second side part. The side surface is located between the upper surface and the lower surface. The cutting edge is located at an intersection of the upper surface and the side surface. The cutting edge includes a first cutting edge located at the corner part, and a second cutting edge adjacent to the first cutting edge and located at the first side part. A height of the first cutting edge relative to the lower surface is constant. The second cutting edge is inclined toward the lower surface as going toward the corner part.

Abstract: A lens (10) has an incidence surface (11) having a cylindrical shape and forming a concave shape, and an emitting surface (12) forming a convex shape with respect to an optical axis (10a). A light source (20) has a large divergence angle in a vertical direction, and a divergence angle in a horizontal direction which is smaller than that in the vertical direction. The light source (20) is located at a position of focal length of the lens (10) in the vertical direction on a side of the incidence surface. The horizontal direction of the light source (20) is aligned with a curvature direction of the cylindrical shape of the lens (10).

Abstract: In order to reduce operation in a rotation-prohibited frequency range and to prevent resonance in a gas compressor wherein inverter control is performed, this gas compressor has: a compressor main body that compresses a gas; a motor that rotationally drives the compressor main body; an inverter that changes the rotational speed of the motor; a check valve arranged downstream from the compressor main body; a pressure detection means that detects load-side pressure downstream from the check valve; and a control device that, in accordance with the pressure detected by the pressure detection means, controls the frequency output by the inverter.

Abstract: In a plane perpendicular to the optical axis (10) of a lens (2), the direction in which the cylindrical surface has zero curvature is the direction of generatrix of the lens (2), and the direction in which the cylindrical surface has non-zero curvature and that is orthogonal to the direction of generatrix is the direction of curvature of the lens (2). A light source (1) is disposed at the focal position (21) in the direction of generatrix on the side of the incident surface (3) of the lens (2), and emits light toward the incident surface (3) of the lens (2), the light having a difference between the divergence angle in the direction of generatrix of the lens (2) and the divergence angle in the direction of curvature of the lens (2).

Abstract: A cutting insert may include a first surface, a second surface, a third surface, and a cutting edge. The first surface may include a first side part, a second side part, and a third side part. The cutting edge may be located at an intersection of the first surface and the third surface. The cutting edge may include a first cutting edge, a second cutting edge, and a third cutting edge. The third cutting edge may be located between the first cutting edge and the second cutting edge and have a convex curvilinear shape. The first cutting edge may be located asymmetrically relative to a bisector of an angle formed by the first side part and the second side part. The first surface may include a first inclined surface located along the first cutting edge and inclined toward the second surface at a first inclination angle.

Abstract: A hydraulic control device and hydraulic control method of a transmission are provided. The hydraulic control device of a transmission, which includes a forward clutch engaged in a Drive range, a reverse brake engaged in a Reverse range, and a switching valve that is able to selectively switch supply of a hydraulic pressure to the forward clutch and the reverse brake, wherein the hydraulic control device receives a shift position of a vehicle on which the transmission is mounted and idling stop information. When the range is switched to the Reverse range from the Drive range during idling stop, and the switching valve is positioned at a position at which a hydraulic pressure is able to be supplied to the reverse brake, rotational speed increase control with a rotational speed of an electric oil pump higher than a normal rotational speed is performed.

Abstract: A cutting insert may include a first surface, a second surface and a third surface. The first surface may include a corner having a convex curvilinear shape and an inclined surface. The inclined surface may include a first inclined surface, a second inclined surface and a third inclined surface. The first inclined surface may be inclined at a first angle. The second inclined surface may be inclined at a second angle. The third inclined surface may be inclined at a third angle. The first inclined surface may have a concave curvilinear shape in a cross section orthogonal to a bisector of the corner. The second inclined surface may be a flat surface. The second angle may be smaller than either of the first angle and the third angle in a cross section which includes the bisector and is orthogonal to the reference plane.

Abstract: Provided are a control device and a control method of a continuously variable transmission capable of preventing an endless member from slipping even when a parking lock is released. On a condition that a vehicle is in an idling stop state and a parking lock mechanism is in a parking lock state, rotation speed increase control configured to increase a rotation speed of an electric oil pump is executed so that the endless member can be prevented from slipping with respect to a driven pulley even when the parking lock mechanism is switched to a parking lock released state.

Abstract: A lens (10) has an incidence surface (11) having a cylindrical shape and forming a concave shape, and an emitting surface (12) forming a convex shape with respect to an optical axis (10a). A light source (20) has a large divergence angle in a vertical direction, and a divergence angle in a horizontal direction which is smaller than that in the vertical direction. The light source (20) is located at a position of focal length of the lens (10) in the vertical direction on a side of the incidence surface. The horizontal direction of the light source (20) is aligned with a curvature direction of the cylindrical shape of the lens (10).

Abstract: A cutting insert includes an upper surface, a lower surface, a side surface, and a cutting edge. The upper surface includes a first side part, a second side part, and a corner part located between the first side part and the second side part. The side surface is located between the upper surface and the lower surface. The cutting edge is located at an intersection of the upper surface and the side surface. The cutting edge includes a first cutting edge located at the corner part, and a second cutting edge adjacent to the first cutting edge and located at the first side part. A height of the first cutting edge relative to the lower surface is constant. The second cutting edge is inclined toward the lower surface as going toward the corner part.

Abstract: Provided are a control device and a control method of a continuously variable transmission capable of preventing an endless member from slipping even when a parking lock is released. On a condition that a vehicle is in an idling stop state and a parking lock mechanism is in a parking lock state, rotation speed increase control configured to increase a rotation speed of an electric oil pump is executed so that the endless member can be prevented from slipping with respect to a driven pulley even when the parking lock mechanism is switched to a parking lock released state.

Abstract: A hydraulic control device and hydraulic control method of a transmission are provided. The hydraulic control device of a transmission, which includes a forward clutch engaged in a Drive range, a reverse brake engaged in a Reverse range, and a switching valve that is able to selectively switch supply of a hydraulic pressure to the forward clutch and the reverse brake, wherein the hydraulic control device receives a shift position of a vehicle on which the transmission is mounted and idling stop information. When the range is switched to the Reverse range from the Drive range during idling stop, and the switching valve is positioned at a position at which a hydraulic pressure is able to be supplied to the reverse brake, rotational speed increase control with a rotational speed of an electric oil pump higher than a normal rotational speed is performed.