Abstract: A technique is provided that can further reduce power at the time of “unload operation control” in a gas compressor that generates a compressed gas at a set pressure by constant-speed control. The gas compressor includes a compressor main unit, a drive source, an intake throttle valve, a gas release valve, rotation speed converting means, a pressure detecting device that detects a discharge pressure, and a controller that, the relationship between an upper-limit pressure H and a lower-limit pressure L being H>L, carries out opening the intake throttle valve and closing the gas release valve and operating the drive source at a full-load rotation speed until the discharge pressure reaches the upper-limit pressure H. The controller carries out at least one of closing the intake throttle valve and opening the gas release valve to reduce the discharge pressure to within a predetermined range when the discharge pressure reaches the upper-limit pressure H.

Abstract: A screw compressor includes a screw rotor, a casing, and a fluid supply portion to supply fluid in a membrane form into a compression chamber in the casing. The screw rotor has a male and female rotors. A male bore covering the male rotor and a female bore covering the female rotor are formed on the inner surface of the casing. An intersection line, on a higher pressure side, of the male and female bores is defined as a compression cusp. In a bore development view, a trajectory made by the first intersection of an extension line of a female lobe ridge and a male lobe ridge being moved, along with the rotation of the male and female rotors, is defined as a trajectory line. An opening of the fluid supply section to the compression chamber is positioned between the compression cusp and the trajectory line.

Abstract: A screw compressor includes: a screw rotor including a rotor section and a shaft section; a casing having a shaft hole through which the shaft section is inserted, the casing housing the screw rotor; and a delivery side shaft sealing unit configured to seal a clearance between the shaft section and the shaft hole against leakage of a working fluid. The delivery side shaft sealing unit includes an annular groove provided in the shaft section, a seal ring disposed movably in an axial direction of the shaft section within the annular groove, the seal ring being capable of sliding contact with the shaft hole and a side wall surface of the annular groove, and a shaft sealing fluid supply passage communicating with the shaft hole and supplying a fluid to one side, in an axial direction, of the seal ring.

Abstract: A disc-type centrifuge is configured to use clean water as sealing water to be supplied at high pressure to a sealing mechanism unit. A pump is disposed on a circulation pathway connecting a sealing water tank, in which the sealing water is stored, and the sealing mechanism unit. The sealing water (clean water) is circulated between the sealing water tank and the sealing mechanism unit by the pump. The pump is connected to the drive shaft of a motor that supplies a driving force to a rotating shaft and bowl and is configured so that the pump is operated by receiving the driving force of the motor.

Abstract: An image processing apparatus in which identification of a corresponding target point between images is easily performed, and physically appropriate registration can be performed by using the identification is provided. The image processing apparatus obtains coordinate transformation for respectively transforming a first image and a second image obtained by imaging an object to a first transformed image and a second transformed image, obtains correspondence information that serves as information of a corresponding point included in each of the first transformed image and the second transformed image, respectively transforms the correspondence information to positions in the first image and the second image, and obtains deformation transformation for performing registration of the first image and the second image on the basis of information of the corresponding points in the first image and the second image.

Abstract: A sheet conveyance apparatus having a motor and a detector to detect a sheet conveyance abnormality. The motor includes a discriminator to determine whether motor rotation is abnormal, and a controller having a first mode to reduce a deviation between a determined motor rotation phase and an instructed phase, and a second mode to control a driving current based on a current having a previously determined magnitude. The controller switches from the second to the first mode if a motor rotor target speed value becomes larger than a predetermined value during the second mode after motor driving is started in the second mode. Where the motor was stopped due to the detector detecting a sheet conveyance abnormality and the discriminator determine that motor rotation is abnormal, the controller starts and maintains the motor driving in the second mode, even if the target speed value becomes larger than the predetermined value.

Abstract: A liquid-feed-type gas compressor that can monitor the liquid surface height in a gas-liquid separator is provided.

Abstract: A projection device is configured to enable more suitable recognition of a display object. The projection device includes a projector configured to project light, a reflector configured to reflect light emitted from the projector, a screen, to which the light reflected by the reflector is projected, and through which at least some of the projected light transmits, and a housing in which the projector, the reflector and the screen are installed, wherein the reflector is inclined with respect to the screen and is installed in the housing.

Abstract: A stand support structure of a saddle riding vehicle has a main frame, a pivot block configured to swingably support a rear wheel-supporting swing arm, and a stand-supporting bracket. The pivot block has a first plate and a second plate attached to the main frame. The first plate and the second plate are coupled to each other. The first plate has a protrusion protruding outward farther than an extension end of the second plate. The stand-supporting bracket is coupled to a surface of the protrusion facing in a vehicle width direction.

Abstract: An image processing apparatus in which identification of a corresponding target point between images is easily performed, and physically appropriate registration can be performed by using the identification is provided. The image processing apparatus obtains coordinate transformation for respectively transforming a first image and a second image obtained by imaging an object to a first transformed image and a second transformed image, obtains correspondence information that serves as information of a corresponding point included in each of the first transformed image and the second transformed image, respectively transforms the correspondence information to positions in the first image and the second image, and obtains deformation transformation for performing registration of the first image and the second image on the basis of information of the corresponding points in the first image and the second image.

Abstract: A shovel includes a lower-part traveling body, an upper-part turning body mounted on the lower-part traveling body, a hydraulic actuator mounted on the upper-part turning body, an internal combustion engine disposed in the upper-part turning body, provided with a supercharger, and configured to be controlled at a constant rotational speed, a hydraulic pump connected to the internal combustion engine, and a controller configured to control horsepower absorbed by the hydraulic pump. The controller is configured to increase a load on the internal combustion engine with the hydraulic pump before a load on the hydraulic actuator increases.

Abstract: An image capturing apparatus includes: a casing having an opening; a light source arranged inside the casing; a sensor arranged inside the casing and configured to capture, through the opening, an image of an object present outside the casing while the light source is on; and a distance calculator to calculate a distance between the casing and the object, based on an image that has been captured by the sensor and contains, within an image region of the object defined by the opening, a high-luminance region and low-luminance regions located more outside than the high-luminance region.

Abstract: A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.

Abstract: A cover fastening structure for a motorcycle, including a cover member around a headlight that can be made smaller in size and, at the same time, with highly accurate fastening. The cover fastening structure for the motorcycle includes: a headlight for lighting the front side of the motorcycle; middle cowls as exterior parts for covering lateral sides of the motorcycle; a headlight under cover disposed under the headlight such as to be continuous with the middle cowls; and a center upper cowl disposed rearwardly of the headlight under cover such as to cover the lower side of the headlight. The headlight under cover includes a rearward extending wall fitted to the center upper cowl, and the rearward extending wall is provided with a cutout. The center upper cowl is provided with a solid cylindrical fitting-receiving section. The cutout of the headlight under cover and the fitting-receiving section of the center upper cowl are fastened together by being fitted to each other.

Abstract: A cover fastening structure for a motorcycle, including a cover member around a headlight that can be made smaller in size and, at the same time, with highly accurate fastening. The cover fastening structure for the motorcycle includes: a headlight for lighting the front side of the motorcycle; middle cowls as exterior parts for covering lateral sides of the motorcycle; a headlight under cover disposed under the headlight such as to be continuous with the middle cowls; and a center upper cowl disposed rearwardly of the headlight under cover such as to cover the lower side of the headlight. The headlight under cover includes a rearward extending wall fitted to the center upper cowl, and the rearward extending wall is provided with a cutout. The center upper cowl is provided with a solid cylindrical fitting-receiving section. The cutout of the headlight under cover and the fitting-receiving section of the center upper cowl are fastened together by being fitted to each other.

Abstract: A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.

Abstract: A shovel includes a boom cylinder that drives a boom and an arm cylinder that drives an arm. A hydraulic pump supplies operating oil to the boom cylinder and the arm cylinder. An engine is connected to the hydraulic pump and equipped with a supercharger. The engine is controlled to maintain a revolution speed within a certain definite range. A controller controls a rotating speed of the supercharger. The controller performs a process of increasing the rotating speed of the supercharger so as to increase a supercharging pressure generated by the supercharger before a hydraulic load is applied to the engine.

Abstract: A distance measuring device includes: an imaging unit that captures a test pattern image including a pair of first markers and a second marker that is formed under a condition different from a condition applied to the first markers; a position detecting unit that detects a position of each of the pair of first markers and the second marker in a captured image captured by the imaging unit; a ratio calculating unit that calculates a ratio of a distance between the pair of the first markers in the captured image and an actual distance between the pair of the first markers; and an actual distance calculating unit that calculates an actual distance between one of the first markers as the pair and the second marker by multiplying a distance between the one of the first markers as the pair and the second marker in the captured image by the ratio.

Abstract: A stand support structure of a saddle riding vehicle has a main frame, a pivot block configured to swingably support a rear wheel-supporting swing arm, and a stand-supporting bracket. The pivot block has a first plate and a second plate attached to the main frame. The first plate and the second plate are coupled to each other. The first plate has a protrusion protruding outward farther than an extension end of the second plate. The stand-supporting bracket is coupled to a surface of the protrusion facing in a vehicle width direction.