Abstract: A damper device including an input element to which power from a motor is transmitted; a first elastic body to which power is transmitted from the input element; a first intermediate element to which power is transmitted from the first elastic body; a second elastic body to which power is transmitted from the first intermediate element; a second intermediate element to which power is transmitted from the second elastic body; a third elastic body to which power is transmitted from the second intermediate element; and an output element to which power is transmitted from the third elastic body. A stiffness of the third elastic body is higher than a stiffness of the second elastic body.

Abstract: A torque fluctuation reducing apparatus includes a first main damper provided on a power transmission path between a drive source and a transmission, and reducing fluctuation torque generated between the drive source and the transmission, a second main damper provided at a transmission-side relative to the first main damper to be in series with the first main damper and reducing the fluctuation torque, the second main damper including a vibration damping property which is different from a vibration damping property of the first main damper, a dynamic damper provided between the first main damper and the second main damper, and restricting vibration at a specific resonance point of a drive system on the power transmission path by using an inertia body and an elastic force, a chamber accommodating the first and the second main dampers, and the dynamic damper, and a viscous medium enclosed in part of the chamber.

Abstract: A damper device including an input element to which power from a motor is transmitted; a first elastic body to which the power is transmitted from the input element; a first intermediate element to which the power is transmitted from the first elastic body; a second elastic body to which the power is transmitted from the first intermediate element; a second intermediate element to which the power is transmitted from the second elastic body, a third elastic body to which the power is transmitted from the second intermediate element; and an output element to which the power is transmitted from the third elastic body. The second elastic body is lighter than the first elastic body.

Abstract: In a damper apparatus, power is transferred, in order, from a motor, to an input, to a first elastic body, to a first element, to a second elastic body, to a second element, to a third elastic body, and to an output. The first and second elastic bodies are disposed radially outward of the third elastic body, and adjacent to each other on a single circumference. The first element has an annular outer peripheral portion that surrounds the first and second elastic bodies, and a pair of contact portions that are formed on peripheral edges on respective sides of the outer peripheral portion to protrude from the peripheral edges radially inward and to face each other, and that are between and in contact with the first elastic body and the second elastic body.

Abstract: A damper device including an input element to which power from a motor is transmitted; a first elastic body to which power is transmitted from the input element; a first intermediate element to which power is transmitted from the first elastic body; a second elastic body to which power is transmitted from the first intermediate element; a second intermediate element to which power is transmitted from the second elastic body; a third elastic body to which power is transmitted from the second intermediate element; and an output element to which power is transmitted from the third elastic body. A stiffness of the first elastic body is higher than a stiffness of the second elastic body.

Abstract: A damper device including an input element to which power from a motor is transmitted; a first elastic body to which power is transmitted from the input element; a first intermediate element to which power is transmitted from the first elastic body; a second elastic body to which power is transmitted from the first intermediate element; a second intermediate element to which power is transmitted from the second elastic body; a third elastic body to which power is transmitted from the second intermediate element; and an output element to which power is transmitted from the third elastic body. A stiffness of the third elastic body is higher than a stiffness of the second elastic body.

Abstract: A damper device including an input element to which power from a motor is transmitted; a first elastic body to which power is transmitted from the input element; a first intermediate element to which power is transmitted from the first elastic body; a second elastic body to which power is transmitted from the first intermediate element; a second intermediate element to which power is transmitted from the second elastic body; a third elastic body to which power is transmitted from the second intermediate element; and an output element to which power is transmitted from the third elastic body. The first and second elastic bodies are coil springs, and the third elastic body is an arc spring that is arranged radially inward of the first and second elastic bodies.

Abstract: A centrifugal-pendulum vibration absorbing device, including a member attached coaxially with a rotary element; and mass bodies swingably coupled to the support member and disposed adjacent to each other in a circumferential direction. The mass bodies are configured such that when a first mass body, which is one of two mass bodies disposed adjacent to each other, and a second mass body, which is the other of the two mass bodies, move with respect to the support member so as to approach each other, the first mass body and the second mass body overlap each other as seen from an axial direction of the rotary element.

Abstract: A fluid transmission apparatus including a pump impeller that is connected to an input member coupled to a motor; a turbine runner that is rotatable together with the pump impeller; a damper mechanism that includes an input element, an intermediate element engaged with the input element via a first elastic body and an output element engaged with the intermediate element via a second elastic body; a lock-up clutch mechanism; a dynamic damper that includes a mass body and a third elastic body engaged with the mass body; and a centrifugal pendulum vibration absorber that includes a support member and a plurality of mass bodies each oscillatable with respect to the support member. The third elastic body of the dynamic damper is engaged with one of the intermediate element and the output element. The centrifugal pendulum vibration absorber's support member is connected to the intermediate element or the output element.

Abstract: A starting apparatus including an input member coupled to a motor; a damper mechanism having an input element, an elastic body and an output element; a lock-up clutch mechanism for performing lockup where the input member is coupled to an input shaft of a transmission via the damper mechanism and for canceling lockup, and a dynamic damper including an elastic body and a mass body engaged with the elastic body. The mass body of the dynamic damper is an elastic body support member that is supported rotatably around an axis of the starting apparatus and that supports the elastic body of the damper mechanism. With this arrangement, the dynamic damper is easily adjustable while reducing the overall size of the starting apparatus.

Abstract: A compact fluid transmission apparatus that is able to effectively damp vibrations transmitted to an input member with a dynamic damper and a centrifugal pendulum vibration absorber. The apparatus includes a pump impeller that is connected to an input member coupled to a motor, and a turbine runner that is rotatable together with the pump impeller. The elastic body of the damper mechanism and the elastic body of the dynamic damper overlap each other with respect to an axial direction of the fluid transmission apparatus when viewed in a radial direction of the fluid transmission apparatus, and are arranged between the turbine runner and the centrifugal pendulum vibration absorber when viewed in the radial direction.

Abstract: In a disclosed backup path bandwidth keeping method for keeping bandwidth of a backup path to which an active path is switched when the active path becomes unavailable in nodes of a communication network, each node is connected to the same destination, and the method includes a backup path bandwidth keeping phase, for M (M is a natural number equal to or less than L) channels in L (L is a natural number) channels kept as backup path bandwidth, for notifying a destination-side node existing in a destination side of the backup path of identification number information of the M channels to be kept and identification information indicating that a path for which the bandwidth is to be kept is a backup path.

Abstract: A hydraulic transmission apparatus including a pump impeller connected to an input member that is coupled to a motor; a turbine runner for rotating with the pump impeller; a damper mechanism having an input element coupled to the turbine runner, an elastic body engaging with the input element, and an output element engaging with the elastic body and coupled to an transmission device input shaft; a lockup clutch for performing lockup in which the input member is engaged with the input element of the damper mechanism, and for releasing lockup; and an engagement mechanism engaging the turbine runner with the output element of the damper mechanism so that the turbine runner and the output element of the damper mechanism rotate integrally, when the lockup is released by the lockup clutch, and that does not engage the turbine runner with the output element of the damper mechanism so that the turbine runner and the output element of the damper mechanism do not rotate integrally, when the lockup is performed by the l

Abstract: A hydraulic power transmission includes a pump impeller connected to an input member coupled to a prime mover, a turbine runner rotatable coaxially with the pump impeller, a damper mechanism having an input element, a resilient member engaged with the input element, an output element, and a lockup clutch capable of engaging the input member and the input element of the damper mechanism and releasing the engagement therebetween. The transmission also includes a dynamic damper configured in such a manner that oscillations transmitted to the input member when the input member and the input element of the damper mechanism are engaged by the lockup clutch are absorbed from the input element.

Abstract: A drill including a columnar body that is rotated about an axis, a cutting edge that is formed at the tip end of the body, and a thinning edge that is formed continuously with the cutting edge close to the axis of the body, by having a thinning at the tip end of the body. The thinning edge is formed such that a rake angle of the thinning edge relative to the axis of the body changes depending on a location of the thinning edge, where the rake angle of the thinning edge close to the cutting edge is a positive angle larger than that close to the axis of the body.

Abstract: A shift lever device includes a shift lever having a pivot shaft formed at a base end of the shift lever integrally and a base having an opening formed to allow the shift lever to be inserted into the base and a pair of bearing parts formed so as to lie on opposing sides of the opening. The pivot shaft extends along a direction intersecting with a longitudinal direction of the shift lever. Each of the bearing parts has a bearing hole formed in the bearing part to adjoin the opening, a guide groove formed in the bearing part to communicate with the bearing hole, for introducing the pivot shaft into the bearing hole and a bearing bush which is to be inserted between the pivot shaft and the bearing hole. The bearing bush has a latch hook provided to engage with an interior of the bearing hole.

Abstract: A shift lever assembly includes a shift lever for shifting a gear position of a transmission, an operated member housed within the shift lever slidably along a longitudinal direction, a shift knob provided at a top of the shift lever for being held by a driver, a knob button coupled with the shift knob for shifting the operated member according to an operation thereof and pivotally supported between a temporarily-held position and an operative position, a cam plate integrally formed on an inside of the knob button, a cam pin provided on the operated member and cooperative with the cam plate, and a boss for holding the knob button at the temporarily-held position by contacting with the cam plate while assembling. The shift lever assembly can have a relatively simple structure and can decrease the number of components. In addition, the shift lever assembly can also improve assembling workability.

Abstract: A drill which includes a cylindrical main body and a shank contiguous to each other, and which is to be rotated about an axis of the cylindrical main body in a predetermined rotating direction, for enlarging a hole previously formed in a workpiece through a die-casting process. The cylindrical main body has flutes which are formed in the cylindrical mainbody and extend from an axially distal end portion of the cylindrical main body toward the shank, so as to provide cutting edges in the axially distal end portion of the cylindrical main body. The cutting edges cooperate with each other to define a point angle which is larger than 170° and is smaller than 180°. Each of the cutting edges is substantially straight or is curved to be convexed as seen in the direction perpendicular to the axis.

Abstract: A shift lever apparatus for an automatic transmission includes: a lever main body including a rod insertion hole provided thereto and a receiving member insertion hole, and swingably supported by a shifter main body; a compression rod inserted in the rod insertion hole from a lower end of the lever main body; a spring, inserted into the rod insertion hole from the lower end of the lever main body, for pressing the compression rod toward an upper end of the lever main body; and a spring receiving member inserted into the receiving member insertion hole, and including a concave portion for holding a lower end of the spring.

Abstract: A drill including a columnar body that is rotated about an axis, a cutting edge that is formed at the tip end of the body, and a thinning edge that is located in conjunction with the cutting edge and that is formed nearer the axis of the body, by providing a thinning at the tip end of the body. The thinning edge is provided such that a rake angle that is an angle formed by the thinning edge and the axis of the body and that is located nearer the axis of the body is different from one that is located nearer the cutting edge, and at the same time, the rake angle of the thinning edge nearer the cutting edge is set at a positive angle larger than that nearer the axis of the body.