Abstract: A torque detector includes: a magnetic flux collecting unit including a magnetic flux collecting holder formed in an annular shape by resin molding and a magnetic shield formed by bending a metal plate and attached to an outer peripheral face of the magnetic flux collecting holder; and a sensor housing formed integrally with the magnetic flux collecting unit. The magnetic shield has a shield body, a shield end portion, and a bent portion. A second angle formed between an outer side face of the shield end portion and a radial direction is smaller than a first angle formed between an outer peripheral face of the shield body and the radial direction.

Abstract: A torque detector includes: a magnetic flux collecting unit including a magnetic flux collecting holder formed in an annular shape by resin molding and a magnetic shield formed by bending a metal plate and attached to an outer peripheral face of the magnetic flux collecting holder; and a sensor housing formed integrally with the magnetic flux collecting unit. The magnetic shield has a shield body, a shield end portion, and a bent portion. A second angle formed between an outer side face of the shield end portion and a radial direction is smaller than a first angle formed between an outer peripheral face of the shield body and the radial direction.

Abstract: An electric power steering device includes a power transmission joint (21) which coaxially couples an output shaft of a steering assist electric motor to an input shaft of a speed reduction mechanism for power transmission. The power transmission joint (21) includes first and second engagement members (41, 42) and an elastic member (43) disposed between the first and second engagement members (41, 42). The elastic member (43) includes an annular main body (44) and a plurality of engagement arms (45) provided at a predetermined interval circumferentially of the main body (44). The engagement arms (45) are engaged with engagement projections (55, 56) of the first and second engagement members (41, 42) circumferentially (X1) of the main body (44). Power transmission faces (46, 460) of the engagement arms (45) include power transmission faces (460) each having a relatively great interference (d1) and power transmission faces (46) each having a relatively small interference (d2).

Abstract: A shaft coupling mechanism for an electric power steering apparatus includes a coupling base body coupled to a rotating shaft; a coupling base body coupled to a steering shaft serving as a rotating shaft; and a rotation transmitting member which is disposed between the both coupling base bodies and transmits the rotation of the coupling base body in a direction about the axis, i.e., in an R direction, to the coupling base body as rotation in the R direction.

Abstract: Aimed at providing an ion implantation apparatus elongated in period over which failure of a target work, due to deposition and release of ion species typically to and from the inner surface of a through-hole shaping a beam shape of ion beam, may be avoidable, reduced in frequency of exchange of an aperture component, and consequently improved in productivity, an aperture component shaping a beam shape has a taper opposed to the ion beam, in at least a part of inner surface of at least the through-hole, and has a thick thermal-sprayed film formed so as to cover the inner surface and therearound of the through-hole.

Abstract: Aimed at providing an ion implantation apparatus elongated in period over which failure of a target work, due to deposition and release of ion species typically to and from the inner surface of a through-hole shaping a beam shape of ion beam, may be avoidable, reduced in frequency of exchange of an aperture component, and consequently improved in productivity, an aperture component shaping a beam shape has a taper opposed to the ion beam, in at least a part of inner surface of at least the through-hole, and has a thick thermal-sprayed film formed so as to cover the inner surface and therearound of the through-hole.

Abstract: A shaft coupling mechanism for an electric power steering apparatus includes a coupling base body coupled to a rotating shaft; a coupling base body coupled to a steering shaft serving as a rotating shaft; and a rotation transmitting member which is disposed between the both coupling base bodies and transmits the rotation of the coupling base body in a direction about the axis, i.e., in an R direction, to the coupling base body as rotation in the R direction.

Abstract: An electric power steering device includes a power transmission joint (21) which coaxially couples an output shaft of a steering assist electric motor to an input shaft of a speed reduction mechanism for power transmission. The power transmission joint (21) includes first and second engagement members (41, 42) and an elastic member (43) disposed between the first and second engagement members (41, 42). The elastic member (43) includes an annular main body (44) and a plurality of engagement arms (45) provided at a predetermined interval circumferentially of the main body (44). The engagement arms (45) are engaged with engagement projections (55, 56) of the first and second engagement members (41, 42) circumferentially (X1) of the main body (44). Power transmission faces (46, 460) of the engagement arms (45) include power transmission faces (460) each having a relatively great interference (d1) and power transmission faces (46) each having a relatively small interference (d2).

Abstract: An oilless reciprocating fluid machine has a piston mounted to a connecting rod by inserting a piston pin in a pin bore of a cylinder. The piston is reciprocally moved up and down in the cylinder with reciprocating of the connecting rod. A reinforcement plate is embedded in the top wall of the piston or attached on the lower surface of the top wall to increase strength of the piston. The reinforcement plate may be formed in various shapes.

Abstract: An inert gas is fed from an inert gas source to a piston-reciprocating compressor and compressed therein. The compressed gas is sent to a high-pressure storage tank. Pressure of the gas in the high-pressure storage tank is detected. When it reaches an upper limit, the piston-reciprocating compressor is stopped by a controller. At the same time, the gas is not fed from the inert gas source into the piston-reciprocating compressor and the gas from the compressor is released to outside. Meanwhile, when the pressure of the gas in the high-pressure storage tank reaches to a lower limit, the compressor starts. At the same time, the inert gas source is allowed to communicate with the compressor, and the gas which reaches to a desired density after the gas is released is sent from the compressor to the tank.

Abstract: In a wafer transfer apparatus for transferring a semiconductor wafer, a wafer gripper is composed of a pair of gripper arms, and a gripper guide is attached to each of the gripper arms. A driving unit operates the gripper arms such that the semiconductor wafer is releasably gripped with the gripper guides of the gripper arms. Each of the gripper guides is formed with a groove for receiving a peripheral edge of the semiconductor wafer, and the groove is configured as a generally V-shaped groove featuring a ridge element protruded from an outer side edge thereof.

Abstract: An oilless reciprocating fluid machine has a piston mounted to a connecting rod by inserting a piston pin in a pin bore of a cylinder. The piston is reciprocally moved up and down in the cylinder with reciprocating of the connecting rod. A reinforcement plate is embedded in the top wall of the piston or attached on the lower surface of the top wall to increase strength of the piston. The reinforcement plate may be formed in various shapes.

Abstract: The present invention provides an electric pump apparatus which can be assembled easily by providing a groove having a shape corresponding to that of an opening of a bottomed-cylindrical tank cylinder on pump side end surface of a bracket for supporting the pump and electric motor on its both ends so that the tank cylinder constitutes a reservoir for operating fluid, detachably attaching an opening-side-end portion of the tank cylinder into the groove, and engaging a snap ring with a side wall of the groove; and which is designed to be compact in which a Suppression chamber for pulsation-reduction of discharged fluid is integrally provided, by constituting the suppression chamber with the opening side of the groove is sealed by an intermediate plate provided in-between the opening side and pump.

Abstract: A gear pump is provided with a drive gear rotated via a drive shaft; a slave gear; a gear housing containing a gear chamber housing these gears therein; and a pump housing composed of a cylindrical housing main body with a bottom which contains the gear housing for serving as a low pressurized chamber, the inside of which communicates with the gear chamber, and an opening being defined thereon, and a covering member for closing the opening, wherein an eccentric pitted portion being eccentric with respect to the axis of the drive shaft is defined on the covering member, and the fluid return port is allowed to face to the eccentric pitted portion to function the eccentric pitted portion as a return fluid passage for return fluid, whereby it is possible to reduce a size of the gear pump without accompanying any cavitation.

Abstract: A motor-driven hydraulic pump for use in motor vehicles and a driving coupler used therein, in which the pump includes a driving gear and a follower gear, an intake chamber and an outlet chamber formed on opposite sides of the meshed gears, a housing for enclosing the intake chamber and the outlet chamber, the housing being supported by a first support on one side and a second support on the other side, and a noise damper including a space inside for reducing noise occurring during the delivery of a working oil, the noise damper communicating with the outlet chamber and being fixed to the second support of the housing, and wherein the driving coupler includes a protruding, undulated sleeve including a mortise mating with a tenon formed on the end of either the driving shaft or the driven shaft, and a sleeve counterpart including a mortise mating with a tenon formed on the end of the other shaft, and a protruding, splined projection which includes splines shaped to fit into the undulated sleeve, with spaces be

Abstract: In a method and apparatus for withdrawing a strand in a horizontal continuous casting installation, the strand is withdrawn from a mold by a predetermined stroke and then retracted by a smaller stroke corresponding to shrinkage of the strand. This cycle of withdrawal and retraction is repeated intermittently. A strand withdrawing and retracting characteristic of a cycle is set in a control unit, and pinch rolls for withdrawing and retracting the strand are controlled based on the set characteristic. Actual withdrawing and retracting strokes of the strand are detected by a detecting device and the detected signal is compared with the set characteristic to produce an instruction signal which is fed back to the pinch rolls, so that the positional accuracy of the strand and the quality of the strand are improved.

Abstract: The present invention relates to an oilless reciprocating compressor and expansion apparatus each comprising a piston body to which a piston ring made of a self-lubricating material is fitted and a metal cylinder, and in the first invention and the second invention a self-lubricating material can be formed on the piston itself or on the circumferential surface side thereof without influencing adversely the durability of the piston itself by the compression heat at the piston top, and in the third invention a ring groove formed into the shape of the letter C whose ends are spaced a little is provided in the piston circumferential surface at least whose surface side is made of a self-lubricating material, and said ring groove is positioned on the side thrust line orthogonal to the piston pin, so that the compression efficiency is improved.