Abstract: This information processing system includes: a controller including an operation element, a restriction member, a resistance section using a magnetorheological fluid whose viscosity changes with an applied-magnetic-field intensity and which serves as a resistance corresponding to the viscosity when the position of the operation element is displaced, and a magnetic field generation section to provide the magnetic field; and a circuit capable of controlling the magnetic field generation section. In a first state, a movable area of a position of the operation element is restricted to a basic movable area. In a second state, the magnetic field generation section is controlled so that the viscosity becomes a first viscosity, when the operation element is in a first area, and so that the viscosity becomes a second viscosity when the operation element is in a second area.

Abstract: A power tool includes a motor and a gear speed reducer. The motor has a motor shaft that is rotatable in a normal direction and in a reverse direction. The gear speed reducer is operably coupled to the motor shaft. The gear speed reducer is configured such that a reduction ratio of the gear speed reducer is changed in response to a change of a rotation direction of the motor shaft.

Abstract: A tube expansion tool that expands an end portion of a synthetic resin made fluid pipe includes an electric motor that is housed in a main body housing. A screw shaft is located in the main body housing and is movable in a front-rear direction. A female screw member is configured to move the screw shaft in the front-rear direction by engaging with and rotating around the screw shaft. A gear that engages the female screw member transmits a rotation output of the output shaft of the electric motor to the female screw member. A wedge extends forward from the screw shaft. A plurality of jaws are coupled to the main body housing so as to be openable/closable. When the wedge moves forward integrally with the screw shaft, the plurality of jaws are pushed by the wedge so as to be opened radially outward relative to each other.

Abstract: In an Ising model calculation device for computing a generalized Ising model expressed by a Hamiltonian having a magnetic field term, the magnetic field term is applied to spins simulated by state monitoring light pulses, and a response of the obtained light pulses is determined by fitting to perform state monitoring during application of a magnetic field term.

Abstract: The present invention provides an optical phase synchronization method characterized by involving applying a small phase modulation signal (dither signal) to local oscillator light, acquiring an error signal that is dependent on a phase shift, and controlling the phase shift. The present invention further provides an optical phase synchronization method characterized by involving inducing a specific phase pattern in dummy pulses in an optical resonator using injection light, applying phase modulation to the local oscillator light, and thereby acquiring a part of the measurement result of the dummy pulses as the error signal. The present invention is further characterized by arranging calculation pulses and phase synchronization dummy pulses in a distributed manner (for example, alternately) and increasing a pulse width using a narrow band electrical filter.

Abstract: A pipe expanding tool includes a wedge, a plurality of jaws, a spring and a first rotary member. The wedge is movable in a reciprocating manner between a first position and a second position along a first axis. The jaws are rotatable around the first axis and movable to a closed position and to an open position. The jaws are configured to move from the closed position to the open position as the wedge moves from the first position to the second position, and to move from the open position to the closed position as the wedge moves from the second position to the first position. The first rotary member is engaged with the jaws such that the first rotary member is integrally rotatable with the jaws, and is configured to be rotated only in one direction around the first axis by an elastic force of the spring.

Abstract: A screw-tightening tool includes a housing, a motor, a spindle, a first clutch and a second clutch. The first clutch is operably coupled to an output shaft and the spindle, and is configured to transmit power from the output shaft to the spindle only when the output shaft is rotationally driven in a first direction. The second clutch is operably coupled to the output shaft and the spindle, and is configured to transmit the power from the output shaft to the spindle only when the output shaft is rotationally driven in a second direction. An output rotation speed of the spindle when the power is transmitted via the first clutch is different from an output rotation speed of the spindle when the power is transmitted via the second clutch, in response to the same rotation speed of the output shaft of the motor.

Abstract: A work tool includes a housing, a spindle, a motor, a power-transmitting mechanism and a restricting member. The power-transmitting mechanism includes a sun member, a ring member, a carrier member and a planetary roller. One of the sun member and the ring member is configured to move together with the spindle in the front-rear direction relative to the other of the sun member and the ring member. The power-transmitting mechanism is configured to transmit power of the motor to the spindle when the sun member and the ring member relatively move toward each other in response to rearward movement of the spindle and the planetary roller gets into frictional contact with the sun member and the ring member. The restricting member is configured to restrict the planetary roller from moving in the front-rear direction relative to the housing.

Abstract: A work tool includes a motor, a tool-mounting part, a rotary shaft, a rotating member, a switch, an operation member and a lock mechanism. The rotating member is held rotatably around a rotation axis of the rotary shaft and configured to transmit torque to and from the rotary shaft while being allowed to rotate relative to the rotary shaft. The rotating member is configured to rotate together with the rotary shaft by action of transmitting the torque when the operation member is moved from the OFF position to the ON position and the lock mechanism allows the rotating member to rotate, and configured to apply a braking force to the rotary shaft by action of transmitting the torque when the operation member is moved from the ON position to the OFF position and the lock mechanism non-rotatably locks the rotating member.

Abstract: An example of a controller includes a housing including an opening, and an operation member, a part of which is exposed through the opening. The operation member includes a key top exposed through the opening and operated by a user, a shaft portion extending downward from the key top, and a protruding portion protruding from the shaft portion. Further, in the housing, a pedestal with which the protruding portion of the operation member comes into contact when the operation member is tilted is provided. The tilt of the operation member is limited by the protruding portion coming into contact with the pedestal.

Abstract: A power tool includes a motor, a speed reducer and a speed-reducing-ratio change mechanism. The speed reducer includes planetary gear mechanisms arranged in multiple stages. The speed-reducing-ratio change mechanism is configured to change a speed reducing ratio of the speed reducer in response to a change of a rotating direction of a motor shaft. At least two stages of the planetary gear mechanisms are configured such that an internal gear in each stage selectively functions as a fixed element. The speed-reducing-ratio change mechanism includes a one-way clutch and a lock mechanism configured to non-rotatably lock the internal gears of the at least two stages when the one-way clutch does not transmit rotation, and to rotate the internal gears of the at least two stages when the one-way clutch transmits rotation. The at least two stages include a speed-increasing planetary gear mechanism and a speed-reducing planetary gear mechanism.

Abstract: A fastening tool includes a motor, a fastening mechanism, a tool body and a main handle. The motor includes a motor body and a motor shaft. The fastening mechanism is configured to fasten workpieces via a fastener by pulling a pin of the fastener rearward relative to a tubular part of the fastener along a driving axis defining a front-rear direction of the fastening tool. The tool body houses the motor and the fastening mechanism. The main handle extends in a direction crossing the driving axis and connected to the tool body such that the main handle and the tool body together form an annular part. A rotational axis of the motor shaft extends parallel to the driving axis. A portion of the main handle is located in a rear space extending behind the motor body.

Abstract: An example of a controller includes a housing including an opening, and an operation member, a part of which is exposed through the opening. The operation member includes a key top exposed through the opening and operated by a user, a shaft portion extending downward from the key top, and a protruding portion protruding from the shaft portion. Further, in the housing, a pedestal with which the protruding portion of the operation member comes into contact when the operation member is tilted is provided. The tilt of the operation member is limited by the protruding portion coming into contact with the pedestal.

Abstract: A work tool includes a housing, a spindle, a clamp shaft, a biasing member, an operation member, a motion-converting mechanism and a pushing-down member. The spindle is supported to be rotatable around a driving axis. The clamp shaft is movable in the up-down direction relative to the spindle. The biasing member is configured to bias the clamp shaft upward relative to the spindle so as to apply to the clamp shaft a clamping force for clamping a tool accessory between a head part of the clamp shaft and a lower end portion of the spindle. The motion-converting mechanism is configured to move the pushing-down member in the up-down direction along with turning of the operation member around the driving axis. The pushing-down member is configured to be moved downward so as to push the tool accessory downward when the operation member is turned in a first direction.

Abstract: A fastening tool includes a housing, a handle, an anvil, a pin-gripping part, a motor, and a driving mechanism. The driving mechanism is configured to move the pin-gripping part along a first axis defining a front-rear direction, relative to the anvil. The driving mechanism includes a rotary member, a movable member, a driving gear and an idler gear. The rotary member has a driven gear formed on its outer periphery and is rotatable around the first axis. The movable member is connected to the pin-gripping part and configured to be linearly moved in the front-rear direction by rotation of the rotary member. The driving gear is configured to be rotated around a second axis extending in parallel to the first axis below the first axis. The idler gear is engaged with the driving gear and the driven gear.

Abstract: A fastening tool includes a housing, a handle, an anvil, a pin-gripping part, a motor, and a driving mechanism. The driving mechanism is configured to move the pin-gripping part along a first axis defining a front-rear direction, relative to the anvil. The driving mechanism includes a rotary member, a movable member, a driving gear and an idler gear. The rotary member has a driven gear formed on its outer periphery and is rotatable around the first axis. The movable member is connected to the pin-gripping part and configured to be linearly moved in the front-rear direction by rotation of the rotary member. The driving gear is configured to be rotated around a second axis extending in parallel to the first axis below the first axis. The idler gear is engaged with the driving gear and the driven gear.

Abstract: A power tool includes a motor and a gear speed reducer. The motor has a motor shaft that is rotatable in a normal direction and in a reverse direction. The gear speed reducer is operably coupled to the motor shaft. The gear speed reducer is configured such that a reduction ratio of the gear speed reducer is changed in response to a change of a rotation direction of the motor shaft.

Abstract: A non-limiting example training instrument comprises a hollow main body formed of an aluminum alloy. The main body is constituted by two gripping portions opposite to each other with a space therebetween and a coupling portion coupling the two gripping portions. A load sensor is arranged in the coupling portion inside the main body. The load sensor is a load cell, a strain gauge affixed to an interior of the main body, and a part of the main body to which the strain gauge is affixed functions as a strain body. Therefore, if a user applies a force so as to bring the two gripping portions close to each other or a force so as to move the two gripping portions away from each other, a load thereof is detected by the load sensor.

Abstract: A screw-tightening tool includes a housing, a spindle, a motor, and a power-transmitting mechanism including a sun member, a ring member, a carrier member and a planetary roller. The power-transmitting mechanism is configured such that, when the ring member moves rearward to be closer to the sun member in response to rearward movement of the spindle, the planetary roller transmits power of the motor to the spindle owing to frictional force between the planetary roller and each of a first tapered surface of the sun member and a second tapered surface of the ring member. The sun member is configured to move from a first position to a second position, which is forward of the first position, when the frictional force reaches a threshold, and to move from the second position to the first position when the frictional force falls below the threshold.

Abstract: A fastening tool includes a tool body, an anvil, a pin-gripping part, a motor, a rotation member, a moving member, a gear part and a receiving member. The rotation member is configured to be rotationally driven around the driving axis. The moving member is coupled to the pin-gripping part and engaged with the rotation member. The moving member is configured to move along a driving axis defining a front-rear direction, in response to rotational driving of the rotation member. The gear part is shaped like a flange projecting radially outward from an outer peripheral surface of the rotation member, and has gear teeth on an outer circumference thereof. The receiving member is disposed rearward of the gear part and configured to receive, via a rear surface of the gear part, a rearward reaction force applied to the rotation member when the pin-gripping part moves frontward.