Abstract: A vehicle height adjusting apparatus according to one aspect includes: a vehicle height adjusting member that adjusts height of a seat of a saddle-type vehicle, using hydraulic pressure; an oil supplying portion that supplies oil to the vehicle height adjusting member, using a motor; and a control section that estimates a load applied to the vehicle height adjusting member, from a current supplied to the motor and a stroke correspondence quantity of the vehicle height adjusting member, and controls the oil supplying portion based on the load to adjust the height of the seat.

Abstract: A vehicle height adjusting apparatus according to one aspect includes: a vehicle height adjusting member that adjusts height of a seat of a saddle-type vehicle, using hydraulic pressure; an oil supplying portion that supplies oil to the vehicle height adjusting member, using a motor; and a control section that estimates a load applied to the vehicle height adjusting member, from a current supplied to the motor and a stroke correspondence quantity of the vehicle height adjusting member, and controls the oil supplying portion based on the load to adjust the height of the seat.

Abstract: In some examples, a ball nut includes a first end and an outer cylindrical surface having a first diameter. A pulley may be mounted on the first end of the ball nut. The pulley may include an inner cylindrical surface having a second diameter larger than the first diameter of the ball nut and sized to engage with the outer cylindrical surface in a press fit. Furthermore, a circumferential groove may be formed in a portion of the first end of the ball nut extending beyond the pulley when the pulley is mounted on the first end of the ball nut. A retaining ring is disposed in the circumferential groove to prevent removal of the pulley from the first end of the ball nut. Furthermore, a portion of the ball nut may engage with a portion the pulley to prevent relative rotation between the pulley and the ball nut.

Abstract: In some examples, a ball nut includes a first end and an outer cylindrical surface having a first diameter. A pulley may be mounted on the first end of the ball nut. The pulley may include an inner cylindrical surface having a second diameter larger than the first diameter of the ball nut and sized to engage with the outer cylindrical surface in a press fit. Furthermore, a circumferential groove may be formed in a portion of the first end of the ball nut extending beyond the pulley when the pulley is mounted on the first end of the ball nut. A retaining ring is disposed in the circumferential groove to prevent removal of the pulley from the first end of the ball nut. Furthermore, a portion of the ball nut may engage with a portion the pulley to prevent relative rotation between the pulley and the ball nut.

Abstract: The present invention provides a plasma processing method that uses a plasma processing apparatus including a plasma processing chamber in which a sample is plasma processed, a first radio-frequency power supply that supplies a first radio-frequency power for generating plasma, and a second radio-frequency power supply that supplies a second radio-frequency power to a sample stage on which the sample is mounted, wherein the plasma processing method includes the steps of modulating the first radio-frequency power by a first pulse; and controlling a plasma dissociation state to create a desired dissociation state by gradually controlling a duty ratio of the first pulse as a plasma processing time elapses.

Abstract: A power steering system is provided with a communicating hole and yet ensures the strength of a housing. Space between the housing and a wheel turning shaft is divided into two. Space located on one axial side of the bearing supporting a nut and the plurality of balls disposed in the nut is a first chamber, and space located on the other side is a second chamber. The communicating hole allowing communication between the first and second chambers is formed in the nut to open in the nut-side ball screw groove, avoiding a region in which the balls circulate, or in a member disposed radially further outside than the nut and radially inside than the inner wall of the housing.

Abstract: A power steering system is provided with a communicating hole and yet ensures the strength of a housing. Space between the housing and a wheel turning shaft is divided into two. Space located on one axial side of the bearing supporting a nut and the plurality of balls disposed in the nut is a first chamber, and space located on the other side is a second chamber. The communicating hole allowing communication between the first and second chambers is formed in the nut to open in the nut-side ball screw groove, avoiding a region in which the balls circulate, or in a member disposed radially further outside than the nut and radially inside than the inner wall of the housing.

Abstract: A fixation member is circularly formed to surround a wheel turning shaft and includes an abutment surface in abutment with an end surface of a bearing on one axial side. The fixation member fixes the bearing to a housing by being fixed in the housing with the abutment surface in abutment with the end surface of the bearing. When being mounted, the fixation member is provided by being moved from an opposite axial end side to one axial end side of the nut. The abutment surface of the fixation member is formed on at least a radially inner side of the fixation member. The fixation member includes a cutout portion provided on the radially inner side of the fixation member and formed to prevent interference with a circulation member when the fixation member is inserted in the housing.

Abstract: A nut is formed by a die forging process in which a die used for the die forging process is released in a direction along the direction of the axis of rotation of the nut.

Abstract: The present invention provides a plasma processing method that uses a plasma processing apparatus including a plasma processing chamber in which a sample is plasma processed, a first radio-frequency power supply that supplies a first radio-frequency power for generating plasma, and a second radio-frequency power supply that supplies a second radio-frequency power to a sample stage on which the sample is mounted, wherein the plasma processing method includes the steps of modulating the first radio-frequency power by a first pulse; and controlling a plasma dissociation state to create a desired dissociation state by gradually controlling a duty ratio of the first pulse as a plasma processing time elapses.

Abstract: A nut is formed by a die forging process in which a die used for the die forging process is released in a direction along the direction of the axis of rotation of the nut.

Abstract: The present invention provides a plasma processing method that uses a plasma processing apparatus including a plasma processing chamber in which a sample is plasma processed, a first radio-frequency power supply that supplies a first radio-frequency power for generating plasma, and a second radio-frequency power supply that supplies a second radio-frequency power to a sample stage on which the sample is mounted, wherein the plasma processing method includes the steps of modulating the first radio-frequency power by a first pulse; and controlling a plasma dissociation state to create a desired dissociation state by gradually controlling a duty ratio of the first pulse as a plasma processing time elapses.

Abstract: A flat surface portion is formed on a nut so as to extend to a region where an output pulley attachment portion is formed in an axial direction, and extend substantially in parallel with a tangential direction of a rotational axis of the nut. A ball circulation groove one end side opening, and a ball circulation groove opposite end side opening are formed on the nut. The ball circulation groove one end side opening is in communication with one end of a ball circulation groove and is formed so as to be opened to the flat surface portion in the region where the output pulley attachment portion is formed. The ball circulation groove opposite end side opening is in communication with an opposite end of the ball circulation groove and is formed so as to be opened to the flat surface portion.

Abstract: The present invention provides a plasma processing method that uses a plasma processing apparatus including a plasma processing chamber in which a sample is plasma processed, a first radio-frequency power supply that supplies a first radio-frequency power for generating plasma, and a second radio-frequency power supply that supplies a second radio-frequency power to a sample stage on which the sample is mounted, wherein the plasma processing method includes the steps of modulating the first radio-frequency power by a first pulse; and controlling a plasma dissociation state to create a desired dissociation state by gradually controlling a duty ratio of the first pulse as a plasma processing time elapses.

Abstract: A fixation member is circularly formed to surround a wheel turning shaft and includes an abutment surface in abutment with an end surface of a bearing on one axial side. The fixation member fixes the bearing to a housing by being fixed in the housing with the abutment surface in abutment with the end surface of the bearing. When being mounted, the fixation member is provided by being moved from an opposite axial end side to one axial end side of the nut. The abutment surface of the fixation member is formed on at least a radially inner side of the fixation member. The fixation member includes a cutout portion provided on the radially inner side of the fixation member and formed to prevent interference with a circulation member when the fixation member is inserted in the housing.

Abstract: A flat surface portion is formed on a nut so as to extend to a region where an output pulley attachment portion is formed in an axial direction, and extend substantially in parallel with a tangential direction of a rotational axis of the nut. A ball circulation groove one end side opening, and a ball circulation groove opposite end side opening are formed on the nut. The ball circulation groove one end side opening is in communication with one end of a ball circulation groove and is formed so as to be opened to the flat surface portion in the region where the output pulley attachment portion is formed. The ball circulation groove opposite end side opening is in communication with an opposite end of the ball circulation groove and is formed so as to be opened to the flat surface portion.

Abstract: An electric power steering device includes a rack bar; a pinion shaft meshing with the rack bar; a worm wheel provided on the pinion shaft; a worm shaft meshing with the worm wheel; an electric motor provided on the worm shaft; a first housing accommodating at least a part of the rack bar and the pinion shaft and includes a first bolt boss formed with a through-hole; a second housing; and a bolt. The second housing includes a worm-wheel accommodating portion accommodating the worm wheel, and a second bolt boss provided to have a shorter distance to the first housing than that of the worm-wheel accommodating portion, and formed with a female-threaded portion. The second bolt boss is opposed to the first bolt boss to cause the female-threaded portion to be continuous with the through-hole of the first bolt boss. The bolt fastens the first housing to the second housing.

Abstract: An electric power steering device includes a rack bar; a pinion shaft meshing with the rack bar; a worm wheel provided on the pinion shaft; a worm shaft meshing with the worm wheel; an electric motor provided on the worm shaft; a first housing accommodating at least a part of the rack bar and the pinion shaft and includes a first bolt boss formed with a through-hole; a second housing; and a bolt. The second housing includes a worm-wheel accommodating portion accommodating the worm wheel, and a second bolt boss provided to have a shorter distance to the first housing than that of the worm-wheel accommodating portion, and formed with a female-threaded portion. The second bolt boss is opposed to the first bolt boss to cause the female-threaded portion to be continuous with the through-hole of the first bolt boss. The bolt fastens the first housing to the second housing.

Abstract: The invention provides a plasma processing apparatus for measuring the etching quantity of the material being processed and detecting the end point of etching using optical interference on the surface of a sample being processed, so as to simultaneously realize long life and ensure sufficient light to be received via a light transmitting unit, to enable long term stable operation and to improve the processing accuracy via accurate etching quantity detection.

Abstract: The invention provides a plasma processing apparatus for measuring the etching quantity of the material being processed and detecting the end point of etching using optical interference on the surface of a sample being processed, so as to simultaneously realize long life and ensure sufficient light to be received via a light transmitting unit, to enable long term stable operation and to improve the processing accuracy via accurate etching quantity detection.