Abstract: A method of processing a wafer includes a plasma activation processing step of performing plasma processing on at least either one surface of a first wafer or one surface of a second wafer to activate the surface, a bonded wafer forming step of forming a bonded wafer by provisionally joining the first wafer and the second wafer, a modified layer forming step of forming modified layers in an annular pattern inside the first wafer by applying a laser beam of a wavelength having transmissivity for the first wafer, an outer peripheral region removal step of removing an outer peripheral region of the first wafer by applying an external force, an anneal processing step of performing anneal processing to increase joint strength of the bonded wafer, and a grinding step of grinding the first wafer to thin it to a finish thickness.

Abstract: An impact tool includes a mechanism part, a main-body housing and a grip housing. The mechanism part strikes a tool bit. The main-body housing holds the mechanism part therein. The grip housing is continuously provided to a rear portion of the main-body housing. One end portion of the grip housing is displaceably connected to the main-body housing through an elastic member, and the other end portion of the grip housing is rotatably connected to the main-body housing through a rotary joint. A center of the rotary joint is disposed on a leading end side of the impact tool with respect to a center of the elastic member, when viewed in a strike direction of the impact tool.

Abstract: A latching relay system includes a latching relay that comprises a permanent magnet and a control electric coil and has a function of self-maintaining a state of an electric contact, at least one inductance component that is disposed close to the latching relay and has a function of generating magnetism when energized, and an assisting energization control unit that energizes the inductance component temporarily when the state of the electric contact of the latching relay is switched, and assists an operation of the latching relay by the magnetism generated by the inductance component.

Abstract: An impact tool includes a mechanism part, a main-body housing and a grip housing. The mechanism part strikes a tool bit. The main-body housing holds the mechanism part therein. The grip housing is continuously provided to a rear portion of the main-body housing. One end portion of the grip housing is displaceably connected to the main-body housing through an elastic member, and the other end portion of the grip housing is rotatably connected to the main-body housing through a rotary joint. A center of the rotary joint is disposed on a leading end side of the impact tool with respect to a center of the elastic member, when viewed in a strike direction of the impact tool.

Abstract: A battery pack includes a casing having an opening, an engaging member having a stopper, and a regulating member configured to regulate a movement of the engaging member. The engaging member is supported in a slidable and rotatable manner relative to the casing, and is applied with a biasing force such that the stopper projects from the opening. The regulating member includes a contact portion configured to block a rotation of the engaging member and an operating portion configured to displace the contact portion to release a blocking of the rotation of the engaging member. When the operating portion is a non-operated state, the engaging member is slidable against the biasing force to retract the stopper. When the operating portion is in an operated state, the engaging member is rotatable against the biasing force to retract the stopper.

Abstract: A latching relay system includes a latching relay that comprises a permanent magnet and a control electric coil and has a function of self-maintaining a state of an electric contact, at least one inductance component that is disposed close to the latching relay and has a function of generating magnetism when energized, and an assisting energization control unit that energizes the inductance component temporarily when the state of the electric contact of the latching relay is switched, and assists an operation of the latching relay by the magnetism generated by the inductance component.

Abstract: A battery pack includes a casing having an opening, an engaging member having a stopper, and a regulating member configured to regulate a movement of the engaging member. The engaging member is supported in a slidable and rotatable manner relative to the casing, and is applied with a biasing force such that the stopper projects from the opening. The regulating member includes a contact portion configured to block a rotation of the engaging member and an operating portion configured to displace the contact portion to release a blocking of the rotation of the engaging member. When the operating portion is a non-operated state, the engaging member is slidable against the biasing force to retract the stopper. When the operating portion is in an operated state, the engaging member is rotatable against the biasing force to retract the stopper.

Abstract: A hammering tool includes, within its tool main body, a piston which reciprocates by using a motor as its drive force, a hammering member which carries out its hammering operation in linking with the reciprocating motion of the piston, and an intermediate member which transmits a hammering force of the hammering member to a top end tool mounted on the top end of the tool main body. The tool main body further includes a measuring device which measures a hammering state of the hammering member and a control device which controls the number of rotations of the motor. The control device, according to measurement results of the measuring device, determines the limit number of times of hammering where the hammering member becomes unable to follow the reciprocating motion of the piston, and thus controls the number of rotations of the motor.

Abstract: A control apparatus for controlling a fuel pump includes: an electronic switch provided in a circuit for connecting a power supply to a motor for driving the fuel pump; a current detector which detects a current which flows through the motor; and a controller which controls the electronic switch in a first PWM mode of a first frequency and a first duty ratio in a normal operation; and change a PWM mode to control the electronic switch in a second PWM mode of a second frequency lower than the first frequency and a second duty ratio lower than the first duty ratio when the current flowing through the motor exceeds a threshold current value in the normal operation.

Abstract: In a driving tool, a diameter of an intermediate member is enlarged to increase a mass of the intermediate member and an outside diameter of a cylinder at a position where the intermediate member is internally provided is enlarged in accordance with the enlarged diameter of the intermediate member. Further, in the driving tool, a bearing thickness of a ball bearing is reduced correspondingly to a dimension of the enlarged outside diameter of the cylinder and a washer is provided at a part where the ball bearing abuts on the cylinder in the forward and backward moving direction thereof.

Abstract: A hammering tool includes, within its tool main body, a piston which reciprocates by using a motor as its drive force, a hammering member which carries out its hammering operation in linking with the reciprocating motion of the piston, and an intermediate member which transmits a hammering force of the hammering member to a top end tool mounted on the top end of the tool main body. The tool main body further includes a measuring device which measures a hammering state of the hammering member and a control device which controls the number of rotations of the motor. The control device, according to measurement results of the measuring device, determines the limit number of times of hammering where the hammering member becomes unable to follow the reciprocating motion of the piston, and thus controls the number of rotations of the motor.

Abstract: In a first space S1 formed upwardly of a brushless motor, there is arranged a power substrate 3 including an electronic part for controlling a rotation of the brushless motor, and, in a second space S2 formed backwardly of the brushless motor, there is arranged a heat sink for cooling the power substrate 3.

Abstract: In a driving tool, a diameter of an intermediate member is enlarged to increase a mass of the intermediate member and an outside diameter of a cylinder at a position where the intermediate member is internally provided is enlarged in accordance with the enlarged diameter of the intermediate member. Further, in the driving tool, a bearing thickness of a ball bearing is reduced correspondingly to a dimension of the enlarged outside diameter of the cylinder and a washer is provided at a part where the ball bearing abuts on the cylinder in the forward and backward moving direction thereof.

Abstract: A control apparatus for controlling a fuel pump includes: an electronic switch provided in a circuit for connecting a power supply to a motor for driving the fuel pump; a current detector which detects a current which flows through the motor; and a controller which controls the electronic switch in a first PWM mode of a first frequency and a first duty ratio in a normal operation; and change a PWM mode to control the electronic switch in a second PWM mode of a second frequency lower than the first frequency and a second duty ratio lower than the first duty ratio when the current flowing through the motor exceeds a threshold current value in the normal operation.

Abstract: An intermediate shaft 3 operatively coupled to a motor and a tool holding sleeve 11 for holding a tip end tool 22 are disposed in a housing 1 in parallel with each other. A motion converting member 5 for converting rotary motion to reciprocating motion thereby to operate the tip end tool 22 to hammer is rotatably provided on the intermediate shaft 3. A first clutch 6 is provided between the intermediate shaft 3 and the motion converting member 5. A clutch sleeve 25 which is coupled to the intermediate shaft 3 by way of a rotation transmitting member, and a second clutch 27 which rotates integrally with the tool holding sleeve 11 and can move in a longitudinal direction of the tool holding sleeve are arranged on an outer periphery of the tool holding sleeve 11. The second clutch 27 is provided so as to be engaged with and disengaged from the clutch sleeve 25.

Abstract: A nonconductor product is soaked in a solution suspending a semiconducting powder and is subjected to light irradiation in the solution so that polar group is formed on the surface of the nonconductor product, and then electroless plating is performed on the surface on which the polar group is formed. A resin product is subjected to electroless plating after ultraviolet treatment in which ultraviolet rays are irradiated through water or a solution is performed. Further, electroless plating or electroplating with a different or the same kind of metal is performed on the electroless-plated layer formed by electroless plating.

Abstract: A nonconductor product is soaked in a solution suspending semiconducting powder and is subjected to light irradiation in the solution so that the polar group is formed on the surface of the nonconductor product, and then electroless plating is performed on the surface on which the polar group is formed. A resin product is subjected to electroless plating after ultraviolet treatment in which ultraviolet rays are irradiated through water or a solution is performed. Further, electroless plating or electroplating with a different or the same kind of metal is performed on the electroless-plated layer formed by electroless plating.

Abstract: A first switching member, having a claw portion engageable with a claw portion of a first gear, is slidably mounted on a crank shaft without causing any relative rotation therebetween. A first urging member resiliently urges the first switching member so that the claw portion of the first switching member is engaged with the claw portion of the first gear. A second switching member, having a claw portion engageable with a claw portion of a second gear, is slidably mounted on an intermediate shaft without causing any relative rotation therebetween. A second urging member resiliently urges the second switching member so that the claw portion of the second switching member is engaged with the claw portion of the second gear.

Abstract: A first switching member, having a claw portion engageable with a claw portion of a first gear, is slidably mounted on a crank shaft without causing any relative rotation therebetween. A first urging member resiliently urges the first switching member so that the claw portion of the first switching member is engaged with the claw portion of the first gear. A second switching member, having a claw portion engageable with a claw portion of a second gear, is slidably mounted on an intermediate shaft without causing any relative rotation therebetween. A second urging member resiliently urges the second switching member so that the claw portion of the second switching member is engaged with the claw portion of the second gear.

Abstract: An apparatus is provided for automatically inserting an elastic tape into a binding tape, and simultaneously sewing the leading and trailing ends of the elastic tape with the binding tape to the hem of a workpiece. A pair of feed rollers and a tensioning device for the elastic tape are provided above a vertical cylindrical guide. An outlet of the vertical cylindrical guide is directed toward the presser foot of a sewing machine, and shifted between positions on and outside the sewing line of the sewing machine. A cutting device for the elastic tape in the direction crossing with the advancing direction is driven by a shaft vertically placed along the vertical cylindrical guide. An advancing speed of the trailing end of the cut elastic tape extending to the presser foot is reduced by a tape pressing device until the trailing end is fed under the presser foot.