Patent application number | Description | Published |
20100278678 | SCREW COMPRESSOR - A screw compressor includes a casing having a cylinder, a cylindrical-shaped screw rotor disposed in the cylinder, a gate rotor and a seal portion. The screw rotor has a plurality of spiral-shaped groove portions formed in an outer peripheral surface. The gate rotor has a plurality of tooth portions engaged with the groove portions of the screw rotor to define compression chambers on one side of the gate rotor. The tooth portions are formed at an outer peripheral surface of the gate rotor. The seal portion is disposed on a side of the gate rotor opposite to the one side where the compression chambers are defined. The seal portion is arranged to block a space between a neighboring pair of the tooth portions of the gate rotor. | 11-04-2010 |
20100284848 | SCREW COMPRESSOR - A screw compressor includes a screw rotor having a plurality of helical grooves, a casing containing the screw rotor and a gate rotor. The casing includes a discharge port on an inner peripheral surface of the casing. The gate rotor has gates meshing with the helical grooves of the screw rotor to compress gas in compression chambers to discharge the gas from the discharge port after being compressed. The compression chambers are defined by the helical grooves, the casing, and the gates. The discharge port is divided into a first port and a second port when two adjacent helical grooves of the plurality of helical grooves is open to the discharge port as a result of rotation of the screw rotor, with one of the two adjacent helical grooves being open in the first port and the other of the two adjacent helical grooves being open in the second port. | 11-11-2010 |
20100329918 | SCREW COMPRESSOR - A screw compressor includes a screw rotor, a gate rotor and an injection mechanism. The screw rotor is provided with multiple helical grooves. The gate rotor is provided with multiple gates meshing with the helical grooves to form at least one compression chamber between at least one of the helical grooves and at least one of the gates. The compression chamber is configured and arranged such that refrigerant taken-in from a starting-end side of the helical groove is compressed and discharged from a dead-end side of the helical groove. The injection mechanism is configured and arranged to inject oil or refrigerant from a discharge hole of the injection mechanism into the compression chamber such that rotational torque is imparted in a direction in which the screw rotor is rotated at a time of compression. | 12-30-2010 |
Patent application number | Description | Published |
20090298629 | Rotation urging mechanism and pulley device - A rotation urging mechanism includes: an outer member which has an outer raceway surface on its inner periphery and is rotatable about a first axis; an inner member which has on its outer periphery an inner raceway surface disposed in face-to-face relation to a radially inner side of the outer raceway surface over an entire circumference thereof and is rotatable about the first axis; and a plurality of balls disposed rollably between the outer raceway surface and the inner raceway surface. The outer raceway surface is formed about a second axis which is inclined with respect to the first axis, and the inner raceway surface is formed about a third axis which is inclined with respect to the first axis. | 12-03-2009 |
20120283058 | ROTATION URGING MECHANISM AND PULLEY DEVICE - A rotation urging mechanism includes an outer member which includes an outer raceway surface on an inner periphery thereof and is rotatable about a first axis, an inner member which includes, on an outer periphery thereof, an inner raceway surface disposed on a radially inner side of the outer raceway surface and is rotatable about the first axis, and a ball disposed rollably between the outer raceway surface and the inner raceway surface. One of the outer and inner raceway surfaces is formed about a second axis which is inclined with respect to the first axis, and the other raceway surface is formed about a third axis which is inclined with respect to the second axis and is disposed so as to cross the one raceway surface. The ball is disposed at a portion of intersection between the outer and inner raceway surfaces. | 11-08-2012 |
20130062886 | POWER GENERATING DEVICE - A power generating device includes an input rotor that is provided to an output shaft of speed up gears so as to be capable of rotating together with the output shaft, an output rotor that is provided to a drive shaft of a generator so as to be capable of rotating together with the drive shaft, and a one-way clutch that is disposed between the input rotor and the output rotor. The one-way clutch connects the input rotor with the output rotor so as to rotate together with the input rotor and the output rotor when the rotation speed of the input rotor exceeds the rotation speed of the output rotor, and the one-way clutch is configured to release the connection between the input rotor and the output rotor when the rotation speed of the input rotor falls below the rotation speed of the output rotor. | 03-14-2013 |
20130278100 | POWER GENERATING APPARATUS - A wind power generator includes: an input rotor provided so as to be rotatable together with an output shaft of a speed increaser; an output rotor provided so as to be rotatable together with a drive shaft of a generator; and a one-way clutch arranged between the input and output rotors. The one-way clutch connects the input rotor to the output rotor such that the input rotor and the output rotor are rotatable together with each other when a rotation speed of the input rotor exceeds a rotation speed of the output rotor, and that disconnects the input rotor from the output rotor when the rotation speed of the input rotor falls below the rotation speed of the output rotor. The one-way clutch has a rotation speed limiter that disconnects the input rotor from the output rotor when the rotation speed of the output shaft exceeds a predetermined value. | 10-24-2013 |
20130283949 | ONE-WAY CLUTCH AND POWER GENERATING APPARATUS - A one-way clutch is arranged between an output shaft of a speed increaser and a drive shaft of a generator in a wind power generator. The one-way clutch includes an inner ring, an outer ring, a plurality of rollers arranged between an outer periphery of the inner ring and an inner periphery of the outer ring, a cage that retains the rollers at predetermined intervals in a circumferential direction, and a plurality of elastic members that is attached to the cage and that urges the corresponding rollers in one direction. The cage includes a pair of axially facing annular portions and a plurality of cage bar portions formed separately from the annular portions, both axial end portions of each of the cage bar portions being fitted to the respective annular portions. | 10-31-2013 |
20130308891 | ROLLING BEARING - A cage used in a large-size rolling bearing is formed of a plurality of cage segments having a circular-arc shape and arranged in a circular pattern. Each cage segment includes rims opposed to each other and separated from each other at a predetermined interval, and a plurality of cage bars that extend from one of the rims to the other rim and that define pockets which accommodate the rollers and which are arranged in the circumferential direction. Multiple pairs of hook portions, between which the inner ring is sandwiched, are formed so as to project from the rims, and are arranged at predetermined intervals in the circumferential direction. Distal ends of the hook portions are engaged with annular grooves formed in end portions of the inner ring so as be rotatable relative to the inner ring. | 11-21-2013 |
20130315521 | ROLLING BEARING CAGE, AND ROLLING BEARING INCLUDING THE SAME - A rolling bearing cage includes: multiple rod members each of which is provided between adjacent two of multiple rolling elements that are arranged in a circumferential direction of a rolling bearing; and multiple coupling members each of which couples corresponding two of the rod members, which are adjacent to each other in the circumferential direction. Each of the coupling members is configured to be pivotable about an axis of a corresponding one of the rod members, which is connected to the coupling member, the axis extending in a longitudinal direction of the rod member, such that a relative angle between corresponding two of the coupling members, which are adjacent to each other in the circumferential direction, is adjustable. | 11-28-2013 |
20140086521 | PIN-TYPE CAGE AND ROLLING BEARING INCLUDING THE PIN-TYPE CAGE - A pin-type cage includes a plurality of pins passed through respective through-holes formed along the central axes of a plurality of rolling elements that are arranged in the circumferential direction of a rolling bearing, and annular retaining members that connect the pins to each other at axially opposite ends of the pins. Each of the pins has a reservoir space that is formed in the pin and that is filled with lubricant, and supply holes used to supply the lubricant from the reservoir space to an outer periphery of the pin. | 03-27-2014 |
20140086744 | TORQUE LIMITER, WIND TURBINE AND WIND TURBINE GENERATOR - In a torque limiter, wedge-shaped spaces are formed between inner and outer rings so as to be arranged in the circumferential direction. In each wedge-shaped space, there are arranged a first roller and a second roller that transmit torque between the inner and outer rings by being brought into wedge-engagement when the inner and outer rings rotate relative to each other in one direction and in the other direction, respectively. Between the first and second rollers, there is arranged an urging device that urges the first and second rollers in such directions that the first and second rollers are brought into wedge-engagement. Each wedge-shaped space is formed such that when the torque becomes equal to or higher than a predetermined value, a first wedge angle of the first roller or a second wedge angle of the second roller becomes such an angle that wedge-engagement of the roller is cancelled. | 03-27-2014 |
20140090945 | POWER GENERATION DEVICE - A one-way clutch used in a wind turbine generator connects an input rotor with an output rotor so that the input rotor and the output rotor are rotatable together with each other when a main shaft rotates in a forward direction and rotation speed of the input rotor is higher than rotation speed of the output rotor, and disconnects the input rotor and the output rotor from each other when the rotation speed of the input rotor is lower than the rotation speed of the output rotor. Further, the wind turbine generator includes a second one-way clutch that permits transmission of force caused by the rotation of the main shaft, to the input rotor when the main shaft rotates in the forward direction, and restricts the rotation of the main shaft when the main shaft tries to rotate in a reverse direction. | 04-03-2014 |
20140093199 | BEARING UNIT FOR RAILWAY VEHICLE - A bearing unit for a railway vehicle, which is disposed in an axle box disposed at each of opposite ends of an axle of a railway vehicle, includes an inner ring secured to the axle; an outer ring disposed outside the inner ring, and secured to the axle box; and rolling elements rollably disposed between the inner ring and the outer ring. A displacement-load sensor is disposed at an inner peripheral surface of the outer ring. | 04-03-2014 |
20150061436 | POWER GENERATING DEVICE - A power generating device includes an input rotor that is provided to an output shaft of speed up gears so as to be capable of rotating together with the output shaft, an output rotor that is provided to a drive shaft of a generator so as to be capable of rotating together with the drive shaft, and a one-way clutch that is disposed between the input rotor and the output rotor. The one-way clutch connects the input rotor with the output rotor so as to rotate together with the input rotor and the output rotor when the rotation speed of the input rotor exceeds the rotation speed of the output rotor, and the one-way clutch is configured to release the connection between the input rotor and the output rotor when the rotation speed of the input rotor falls below the rotation speed of the output rotor. | 03-05-2015 |
Patent application number | Description | Published |
20090255489 | Straddle Type Vehicle - A motorcycle includes an engine, a radiator that cools a cooling liquid, a first piping that connects the engine to the radiator, and a second piping that connects the engine to the radiator. The second piping, engine, radiator and first piping form a circulating circuit through which cooling liquid circulates. At least one of the first and second pipings is substantially constituted by resin piping. The time required to warm up the engine is thereby reduced. | 10-15-2009 |
20090255748 | Motorcycle - A motorcycle including a radiator and having an engine offset, and in which increase in vehicle width is suppressed. A center of the engine is out of alignment with respect to a center of a head pipe toward one side in the vehicle width direction. The radiator is arranged in front of the engine. Cooling liquid flows in the radiator in the vehicle width direction. A first piping extends rearward from the other end portion of the radiator and a rear end portion of the first piping is connected to the engine. A second piping connects one end portion of the radiator in the vehicle width direction to the engine. The second piping extends from the one end portion of the radiator to the other side of the engine in the vehicle width direction, between the radiator and the engine, and extends rearward of the other side of the engine in the vehicle width direction. | 10-15-2009 |
20090260595 | Engine and Straddle-Type Vehicle Including the Engine - An engine that is lighter in weight includes a crankcase, a crankshaft, a body cylinder, a head cylinder, a piston, a piston ring and a cylinder fixing bolt. The piston ring is arranged on an outer peripheral surface of the piston. One end portion of the cylinder fixing bolt extends toward the head cylinder and an other end portion of the cylinder fixing bolt extends toward the crankcase. The cylinder fixing bolt connects the head cylinder, the body cylinder and the crankcase to one another. A lower section of the body cylinder is located within the crankcase. The piston ring abuts on the lower section when the piston is located at a bottom dead center. | 10-22-2009 |