Abstract: A rod body (30) is formed of magnetostrictive material and includes one end portion (30a) fixed, and a piston (35) is fixed to the other end portion (30b) of the rod body (30). The piston (35) is slidably disposed within a cylinder (36) in which there is formed a pump chamber (37). A suction port (39) for sucking lubricating oil into the pump chamber (37) is formed in the cylinder (36), while a suction valve (40) for preventing the lubricating oil from flowing out from the suction port (39) is disposed in the suction port (39). In the cylinder (36), there is disposed a nozzle (20) which communicates with the pump chamber (37) and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve (40). There is disposed a coil (43) outside the rod body (30) and, to the coil (43), there is connected a control device (6) for controlling the supply of a current to be supplied to the coil (43).

Abstract: A high-speed fluidic device has a friction roller type speed-increasing mechanism, an electric motor, and a high-speed fluidic machine, wherein: the friction roller type speed-increasing mechanism includes a housing, a low-speed side member having an outer ring provided at one end portion thereof, a high-speed side shaft rotatably supported by the housing so as to be eccentric to the low-speed side member and the outer ring, at least one guide roller rotatably supported between the outer ring and the high-speed side shaft, and at least one movable roller rotatably supported between the outer ring and the high-speed side shaft; the electric motor drives the friction roller type speed-increasing mechanism; and the high-speed fluidic machine is connected to the high-speed side shaft so as to be driven by the high-speed side shaft.

Abstract: A method of supplying a lubricant to a roller bearing of a high-speed spindle includes pressuring the lubricant in a pump chamber and discharging the pressurized lubricant within the pump chamber from the nozzle. Also, the method includes bringing a fine quantity of lubricant discharged from the nozzle into direct contact with a lubricating surface of a rotary body of the roller bearing.

Abstract: A high-speed fluidic device has a friction roller type speed-increasing mechanism, an electric motor, and a high-speed fluidic machine, wherein: the friction roller type speed-increasing mechanism includes a housing, a low-speed side member having an outer ring provided at one end portion thereof, a high-speed side shaft rotatably supported by the housing so as to be eccentric to the low-speed side member and the outer ring, at least one guide roller rotatably supported between the outer ring and the high-speed side shaft, and at least one movable roller rotatably supported between the outer ring and the high-speed side shaft; the electric motor drives the friction roller type speed-increasing mechanism; and the high-speed fluidic machine is connected to the high-speed side shaft so as to be driven by the high-speed side shaft.

Abstract: A speed increasing gear used in a supercharger has a center roller connected to an output shaft, an outer wheel arranged eccentric to the center roller, and a plurality of intermediate rollers arranged within an annular space in which a width of the center roller with respect to a diametrical direction is uneven with respect to a circumferential direction of the center roller. The annular space is provided between the center roller and the outer wheel, and a pivot of at least one intermediate roller is movably arranged in a circumferential direction and a radial direction of the center roller.

Abstract: A rod body (30) is formed of magnetostrictive material and includes one end portion (30a) fixed, and a piston (35) is fixed to the other end portion (30b) of the rod body (30). The piston (35) is slidably disposed within a cylinder (36) in which there is formed a pump chamber (37). A suction port (39) for sucking lubricating oil into the pump chamber (37) is formed in the cylinder (36), while a suction valve (40) for preventing the lubricating oil from flowing out from the suction port (39) is disposed in the suction port (39). In the cylinder (36), there is disposed a nozzle (20) which communicates with the pump chamber (37) and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve (40). There is disposed a coil (43) outside the rod body (30) and, to the coil (43), there is connected a control device (6) for controlling the supply of a current to be supplied to the coil (43).

Abstract: A rod body (30) is formed of magnetostrictive material and includes one end portion (30a) fixed, and a piston (35) is fixed to the other end portion (35b) of the rod body (30). The piston (35) is slidably disposed within a cylinder (36) in which there is formed a pump chamber (37). A suction port (39) for sucking lubricating oil into the pump chamber (37) is formed in the cylinder (36), while a suction valve (40) for preventing the lubricating oil from flowing out from the suction port (39) is disposed in the suction port (39). In the cylinder (36), there is disposed a nozzle (20) which communicates with the pump chamber (37) and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve (40). There is disposed a coil (43) outside the rod body (30) and, to the coil (43), there is connected a control device (6) for controlling the supply of a current to be supplied to the coil (43).

Abstract: A speed increasing gear used in a supercharger has a center roller connected to an output shaft, an outer wheel arranged eccentric to the center roller, and a plurality of intermediate rollers arranged within an annular space in which a width of the center roller with respect to a diametrical direction is uneven with respect to a circumferential direction of the center roller. The annular space is provided between the center roller and the outer wheel, and a pivot of at least one intermediate roller is movably arranged in a circumferential direction and a radial direction of the center roller.

Abstract: A rod body 30 is formed of magnetostrictive material and includes one end portion 30 fixed, and a piston 35 is fixed to the other end portion 30b of the rod body 30. The piston 35 is slidably disposed within a cylinder 36 in which there is formed a pump chamber 37. A suction port 39 for sucking lubricating oil into the pump chamber 37 is formed in the cylinder 36, while a suction valve 40 for preventing the lubricating oil from flowing out from the suction port 39 is disposed in the suction port 39. In the cylinder 36, there is disposed a nozzle 20 which communicates with the pump chamber 37 and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve 40. There is disposed a coil 43 outside the rod body 30 and, to the coil 43, there is connected a control device 6 for controlling the supply of a current to be supplied to the coil 43.

Abstract: A rod body 30 is formed of magnetostrictive material and includes one end portion 30 fixed, and a piston 35 is fixed to the other end portion 30b of the rod body 30. The piston 35 is slidably disposed within a cylinder 36 in which there is formed a pump chamber 37. A suction port 39 for sucking lubricating oil into the pump chamber 37 is formed in the cylinder 36, while a suction valve 40 for preventing the lubricating oil from flowing out from the suction port 39 is disposed in the suction port 39. In the cylinder 36, there is disposed a nozzle 20 which communicates with the pump chamber 37 and has a sectional area smaller than the lubricating oil passage sectional area of the suction valve 40. There is disposed a coil 43 outside the rod body 30 and, to the coil 43, there is connected a control device 6 for controlling the supply of a current to be supplied to the coil 43.

Abstract: A tube-pressed brake includes a tube for being injected with a pressure fluid to produce a pressure therein to permit transmission of a torque between two members arranged in a combination and rotating relative to each other. The tube has been applied with a coating.

Abstract: A friction engaging device capable of obtaining a large transfer torque capacity with a compact and simple construction and smoothly connecting and disconnecting friction engaged members. A wet type multi-disc clutch has a clutch case, a hub and a main clutch. A variable length joint is provided between an inner cylindrical portion of the clutch case and a cylindrical portion of the hub. The variable length joint is constructed mainly of a first cam plate so held as to be slidable in the axial direction on the hub, a second cam plate so held as to be rotatable relatively to the clutch case, and a plurality of rollers interposed between the first and second cam plates. A tube type clutch for making the second cam plate and the clutch case frictionally engage with each other, is provided in a gap between the second cam plate and the inner cylindrical portion of the clutch case.

Abstract: An elastic-tube-operated brake band is used by arranging it between an inner member and an outer member. The brake band includes a ring-shaped strap with a friction material fixedly secured on a circumferential surface thereof. The brake band is also with an elastic tube which is arranged on a side of an opposite circumferential surface of the ring-shaped strap. By a pressure produced by charging pressure fluid into the tube, the friction material is brought into engagement with a counterpart via the ring-shaped strap to transmit a torque between the inner member and the outer member. The ring-shaped strap is fixed at opposite ends thereof with play in a circumferential direction, respectively.

Abstract: A tube-pressed brake band is arranged between inner and outer rings having a common center to stop rotation of one of the inner and outer rings as a counterpart by inflating a ring-shaped tube, which is inflatable in a radial direction of the brake band, into engagement with the counterpart. The tube-pressed brake band has a ring-shaped strap arranged between the counterpart and the tube and relative to an angular direction, is fixed at an end thereof on the other one of the inner and outer rings.

Abstract: A damper device for rotary motion is disclosed which is small in size, has an excellent durability and can optionally change damping characteristics from the outside. Rotation of an input shaft is transmitted to a cylinder tube through a rotation transmitting device of loading cam type, thereby rotating an output shaft engaged with the cylinder tube through splines. When the rotational speed and torque of power to be transmitted is fluctuated, the cylinder tube is displaced against the resiliency of a conical plate spring and the volume of a pressure chamber is reduced. A viscous liquid in the pressure chamber is then discharged to the outside through a throttle hole. A relative displacement between the input and output shafts absorbs vibrations in terms of energy corresponding to the product of the mass and changes in the angular speed of members which are displaced in synch with the input shaft.

Abstract: In addition to a first oil pump directly connected to an engine, a second oil pump is provided which is driven by an electric motor. Accordingly, a start clutch engaging pressure is applied through first and second solenoid-operated valves. The electric motor-driven pump is of the constant pressure type, and therefore its start, at the start of the automobile, can be achieved with a simple control program. After the start of the automobile, the solenoid-operated valve is switched over to the other one, so that the oil pressure is applied from the first oil pump directly connected to the engine, whereby the battery power consumption is minimized. This oil circuit is applied to various kinds of friction engagement clutches.