Abstract: There is provided a high-speed tele-communication method and a high-speed tele-communication system which can be easily realized with a simple configuration, with good operability, at low cost, and in a short term without considerably improving or substituting existing communication-related equipment by improving the foregoing problems of technologies in the related art. A high-speed tele-communication method high-speed tele-communication system 100 causes a waveform within a unit period time in an analog waveform signal of a carrier wave or basic frequency wave 400 to respond to a digital signal 300 of information BD to be transmitted and deform the waveform.

Abstract: A bicycle hub transmission includes a hub axle, a driver, a hub shell, a power transmission mechanism and an auxiliary power transmission mechanism. The driver is rotatably supported by the hub axle. The hub shell is rotatably supported by the hub axle with the power transmission mechanism is operatively disposed therebetween to transmit rotational power from the driver to the hub shell through power transmission paths. The shift mechanism is operatively coupled to the power transmission mechanism to select one of the power transmission paths. The auxiliary power transmission mechanism is disposed between the driver and the hub shell to transmit rotational power from the driver to the hub shell through an auxiliary power transmission path during shifting such that a load path of the power transmission mechanism for the power transmission path being shift to is placed in a substantially unloaded state with the auxiliary power transmission path carrying the load.

Abstract: A device to mount a control lever to a bicycle handlebar includes a bracket, an expanding bolt, and a fixing member. The bracket is configured to be connected to the control lever and includes an inlet opening with a center axis, a first tapered portion extending along an axial direction, and at least one tapered outer serration formed on the first tapered portion. The expanding bolt includes a tubular portion and a second tapered portion extending along the axial direction. The tubular portion includes an outer threaded surface. The fixing member is disposed on the tubular portion of the expanding bolt. The first and second tapered portions are configured to operate so as to push the fixing member against an inner surface of the bicycle handlebar when the device is mounted to the bicycle handlebar.

Abstract: A bicycle brake apparatus comprises a securing bracket with an axle opening dimensioned to receive a bicycle wheel hub axle therethrough, a braked member that has a braking surface and is adapted to rotate with a bicycle wheel hub rotatably supported by the hub axle, a braking member adapted to contact the braking surface, and an operating unit that selectively causes the braking member to contact the braking surface. A locking unit is structured for attachment to the securing bracket, wherein the locking unit extends in an axial direction of the hub axle and is dimensioned to nonrotatably engage the bicycle frame radially inwardly of a rotating portion of the brake apparatus.

Abstract: A multi-speed internal bicycle hub transmission assembly includes a hub axle, a driver, a hub shell, a power transmission mechanism and a shift control mechanism. The driver and the hub shell are rotatably supported to the hub axle. The power transmission mechanism is disposed between the driver and the hub shell for transmitting rotational power from the driver to the hub shell. The shift control mechanism includes a shift controller and a positioner. The shift controller is movable in rotational directions relative to the hub axle to a plurality of orientations. Each orientation of the shift controller corresponds to selection of a corresponding one of plurality of power transmission paths of the power transmission mechanism. The positioner is non-movable in the rotational direction relative to the hub axle and is biased into contact with the shift controller.

Abstract: A bicycle hub transmission includes a hub axle, a driver, a hub shell, a power transmission mechanism and an auxiliary power transmission mechanism. The driver is rotatably supported by the hub axle. The hub shell is rotatably supported by the hub axle with the power transmission mechanism is operatively disposed therebetween to transmit rotational power from the driver to the hub shell through power transmission paths. The shift mechanism is operatively coupled to the power transmission mechanism to select one of the power transmission paths. The auxiliary power transmission mechanism is disposed between the driver and the hub shell to transmit rotational power from the driver to the hub shell through an auxiliary power transmission path during shifting such that a load path of the power transmission mechanism for the power transmission path being shift to is placed in a substantially unloaded state with the auxiliary power transmission path carrying the load.

Abstract: A bicycle brake apparatus comprises a securing bracket with an axle opening dimensioned to receive a bicycle wheel hub axle therethrough, a braked member that has a braking surface and is adapted to rotate with a bicycle wheel hub rotatably supported by the hub axle, a braking member adapted to contact the braking surface, and an operating unit that selectively causes the braking member to contact the braking surface. A locking unit is structured for attachment to the securing bracket, wherein the locking unit extends in an axial direction of the hub axle and is dimensioned to nonrotatably engage the bicycle frame radially inwardly of a rotating portion of the brake apparatus.

Abstract: A cable installation aiding device is used to aid in the installation of cable members (e.g., brake cables or the like) in a steerer tube of a bicycle. The cable installation aiding device has an attachment part and a first cable guide part. The attachment part is preferably attached to the inner circumferential surface of the steerer tube. The first cable guide part is configured and dimensioned to guide cable members passing through the steerer tube between a first axial end of the steerer tube and an outer circumferential side opening of the steerer tube that is spaced from a second axial end of the steerer tube.

Abstract: A bicycle chain wheel structure is configured with a right crank arm portion and an axle portion that are integrally formed together as a one-piece, unitary member. The right crank arm portion has an inner end integrally formed with the axle portion. The right crank arm portion has an outer end with a pedal mounting arrangement. The axle portion has a first end that is integrally formed with the right crank arm portion and a second end with a crank arm mounting arrangement. The axle portion has external threads disposed between the first and second ends of the axle portion. Thus, a portion of a bottom bracket is partially integrated into the bicycle chain wheel structure. Preferably, the chain guard is integrated into the right crank arm as a one-piece, unitary member. This arrangement reduces parts and manufacturing costs of the bicycle chain wheel structure.

Abstract: A bicycle brake apparatus comprises a securing bracket with an axle opening dimensioned to receive a bicycle wheel hub axle therethrough, a braked member that has a braking surface and is adapted to rotate with a bicycle wheel hub rotatably supported by the hub axle, a braking member adapted to contact the braking surface, and an operating unit that selectively causes the braking member to contact the braking surface. A locking unit is structured for attachment to the securing bracket, wherein the locking unit extends in an axial direction of the hub axle and is dimensioned to nonrotatably engage the bicycle frame radially inwardly of a rotating portion of the brake apparatus.

Abstract: A device to mount a control lever to a bicycle handlebar includes a bracket, an expanding bolt, and a fixing member. The bracket is configured to be connected to the control lever and includes an inlet opening with a center axis, a first tapered portion extending along an axial direction, and at least one tapered outer serration formed on the first tapered portion. The expanding bolt includes a tubular portion and a second tapered portion extending along the axial direction. The tubular portion includes an outer threaded surface. The fixing member is disposed on the tubular portion of the expanding bolt. The first and second tapered portions are configured to operate so as to push the fixing member against an inner surface of the bicycle handlebar when the device is mounted to the bicycle handlebar.

Abstract: A handlebar is disclosed that includes a handlebar main body, a pair of support walls, a first slit, and a brake lever. The handlebar main body is hollow and is mounted to the handlebar stem. The hollow interior of the handlebar main body is formed with the support walls that extend along at least a portion of the length of the interior of the handlebar main body. The brake lever has a lever body and a brake cable attachment portion. The lever body is pivotally supported by the support walls proximate the first slit. The lever body includes a brake operating portion that extends away from the handlebar main body and a pivot support portion that is pivotally mounted to the support walls.

Abstract: A torque sensor insertion tool is provided for installing a torque sensor disposed on an axle and a torque sensor deinsertion tool is provided for removing a torque sensor unit disposed on the axle. These tools are designed to avoid applying an excessive tension force or an excessive compression force that will distort the torque sensor unit during installation and removal of the torque sensor unit disposed on the axle. Basically, the tools contact the torque sensor at two axially spaced apart points and support the torque sensor unit both internally and externally during installation and removal. The torque sensor insertion tool basically has an axle attachment structure, a tubular sensor supporting structure and a tubular sensor moving structure. The torque sensor deinsertion tool basically has an outer member, an inner member and a nut member.

Abstract: A multi-speed internal bicycle hub transmission assembly includes a hub axle, a driver, a hub shell, a power transmission mechanism and a shift control mechanism. The driver and the hub shell are rotatably supported to the hub axle. The power transmission mechanism is disposed between the driver and the hub shell for transmitting rotational power from the driver to the hub shell. The shift control mechanism includes a shift controller and a positioner. The shift controller is movable in rotational directions relative to the hub axle to a plurality of orientations. Each orientation of the shift controller corresponds to selection of a corresponding one of plurality of power transmission paths of the power transmission mechanism. The positioner is non-movable in the rotational direction relative to the hub axle and is biased into contact with the shift controller.

Abstract: A bicycle hub cover assembly is installed on a bicycle hub to provide a hard, rigid protective cover for the bicycle hub. In one embodiment, the bicycle hub cover assembly has a hub shell cover, a first hub end cover, a second hub end cover and a pair of fasteners that attach the hub end covers to the axle of the bicycle hub. The hub shell cover is configured and arranged to be mounted concentrically around a center portion of the hub shell of the bicycle hub, while the hub end covers overlie the axial ends of the bicycle hub. Thus, the bicycle hub is completely enclosed, except for a small gap located between the hub shell cover and each of the first and second hub end covers. In another embodiment, the hub shell cover is eliminated.

Abstract: A bicycle hub cover assembly is installed on a bicycle hub to provide a hard, rigid protective cover for the bicycle hub. In one embodiment, the bicycle hub cover assembly has a hub shell cover, a first hub end cover, a second hub end cover and a pair of fasteners that attach the hub end covers to the axle of the bicycle hub. The hub shell cover is configured and arranged to be mounted concentrically around a center portion of the hub shell of the bicycle hub, while the hub end covers overlie the axial ends of the bicycle hub. Thus, the bicycle hub is completely enclosed, except for a small gap located between the hub shell cover and each of the first and second hub end covers. In another embodiment, the hub shell cover is eliminated.

Abstract: A bicycle seat post fixing structure includes a tubular attachment member and a tightening member. The tubular attachment member is configured to be fixed to the frame. The tubular attachment member includes a first threaded component and a first inner peripheral surface configured to receive the seat post. The tubular tightening member includes a second threaded component that mates with the first threaded component and a second inner peripheral surface configured to receive the seat post. One of the first and second threaded components is a female threaded component and the other of the first and second threaded components is a male threaded component having at least one slit formed therein. At least one of the male and female threaded components has tapered threads such that rotation of the tightening member in a tightening direction squeezes the male threaded component to hold the seat post.

Abstract: A bicycle suspension assembly elastically supports a first frame member to a second frame member. The suspension assembly preferably forms a bottom bracket unit that allows the rear frame member to pivot about the axis of the bicycle crank axle without any adverse affects to the drive train assembly. Preferably, the suspension assembly includes a first suspension member, a second suspension member, a first bearing unit, and a shock-absorbing structure. The first bearing unit is operatively disposed between the first and second suspension members to movably support the first suspension member for rotation relative to the second suspension member about a center pivot axis. In the preferred embodiment, each of the shock-absorbing structure includes a plurality of biasing members. Preferably, the suspension assembly includes a second bearing unit that is axially spaced from the first bearing unit along the center pivot axis.

Abstract: A cable installation aiding device is used to aid in the installation of cable members (e.g., brake cables or the like) in a steerer tube of a bicycle. The cable installation aiding device has an attachment part and a first cable guide part. The attachment part is preferably attached to the inner circumferential surface of the steerer tube. The first cable guide part is configured and dimensioned to guide cable members passing through the steerer tube between a first axial end of the steerer tube and an outer circumferential side opening of the steerer tube that is spaced from a second axial end of the steerer tube.

Abstract: A bicycle hub cover assembly is installed on a bicycle hub to provide a hard, rigid protective cover for the bicycle hub. In one embodiment, the bicycle hub cover assembly has a hub shell cover, a first hub end cover, a second hub end cover and a pair of fasteners that attach the hub end covers to the axle of the bicycle hub. The hub shell cover is configured and arranged to be mounted concentrically around a center portion of the hub shell of the bicycle hub, while the hub end covers overlie the axial ends of the bicycle hub. Thus, the bicycle hub is completely enclosed, except for a small gap located between the hub shell cover and each of the first and second hub end covers. In another embodiment, the hub shell cover is eliminated.