Abstract: A rotary joint according to an aspect of the present disclosure includes a first microstrip line, a second microstrip line, a transmitting circuit connected to one end of the first microstrip line and configured to output a communication signal, a transmitting-side terminator connected to the other end of the first microstrip line, a receiving-side terminator connected to one end of the second microstrip line, and a receiving circuit connected to the other end of the second microstrip line and configured to receive the communication signal, in which the first and second microstrip lines and are set along at least a part of a circular ring having a circumferential length equal to an integral multiple of a wavelength of a traveling wave with which the communication signal propagates through the microstrip lines.

Abstract: A first slider and a fifth-speed driving gear are arranged along an axial direction on a driving shaft. A shift fork has an end located in a guide groove of a shift drum, and another end connected to the first slider. In gear-shifting to a fifth speed, the first slider moves on the driving shaft so that a plurality of fifth-speed dog projections and a plurality of fifth-speed dog recesses mesh with each other. At least four of the plurality of fifth-speed dog projections and at least four of the plurality of fifth-speed dog recesses mesh within a range of 90 degrees at one side in the circumferential direction of the fifth-speed driving gear and a range of 90 degrees at another side in the circumferential direction of the fifth-speed driving gear with respect to a reference line.

Abstract: A transmission 20 includes gears 421 through 426 and 441 through 446, sliders 451 through 453, an electric motor 58, a shift drum 50, shift forks 491 through 493, and a control unit 83. The sliders 451 through 453 are members different from the gears 421 through 426 and 441 through 446. The shift drum 50 includes guide grooves 61 through 63 each including a linear portion 64 and a tilt portion 65. An end of each of the shift forks 491 through 493 is located in a corresponding one of the guide grooves 61 through 63. The control unit 83 controls the electric motor 58 to rotate the shift drum 50 in such a manner that a gear-shift rotation angle is less than 60 degrees. With rotation of the shift drum 50 by the gear-shift rotation angle, the shift forks 491 through 493 move the sliders 451 through 453 in the axial direction of the shaft 21 or 22.

Abstract: Incongruity sense of a driver due to dog clunking noise can be reduced with reduction of dog clunking noise. A fifth-speed driving gear (425) and a sixth-speed driving gear (426) are arranged on a driving shaft (41) along an axial direction. A first slider (451) is disposed to be movable in the axial direction between the fifth-speed driving gear (425) and the sixth-speed driving gear (426). The first slider (451) is not rotatable on the driving shaft (41). In the axial direction, the sum of the widths of the fifth-speed driving gear (425) and the sixth-speed driving gear (426) is smaller than the maximum width of the first slider (451).

Abstract: A rotary joint according to an aspect of the present disclosure includes a first microstrip line, a second microstrip line, a transmitting circuit connected to one end of the first microstrip line and configured to output a communication signal, a transmitting-side terminator connected to the other end of the first microstrip line, a receiving-side terminator connected to one end of the second microstrip line, and a receiving circuit connected to the other end of the second microstrip line and configured to receive the communication signal, in which the first and second microstrip lines and are set along at least a part of a circular ring having a circumferential length equal to an integral multiple of a wavelength of a traveling wave with which the communication signal propagates through the microstrip lines.

Abstract: A first slider and a fifth-speed driving gear are arranged along an axial direction on a driving shaft. A shift fork has an end located in a guide groove of a shift drum, and another end connected to the first slider. In gear-shifting to a fifth speed, the first slider moves on the driving shaft so that a plurality of fifth-speed dog projections and a plurality of fifth-speed dog recesses mesh with each other. At least four of the plurality of fifth-speed dog projections and at least four of the plurality of fifth-speed dog recesses mesh within a range of 90 degrees at one side in the circumferential direction of the fifth-speed driving gear and a range of 90 degrees at another side in the circumferential direction of the fifth-speed driving gear with respect to a reference line.

Abstract: A transmission 20 includes gears 421 through 426 and 441 through 446, sliders 451 through 453, an electric motor 58, a shift drum 50, shift forks 491 through 493, and a control unit 83. The sliders 451 through 453 are members different from the gears 421 through 426 and 441 through 446. The shift drum 50 includes guide grooves 61 through 63 each including a linear portion 64 and a tilt portion 65. An end of each of the shift forks 491 through 493 is located in a corresponding one of the guide grooves 61 through 63. The control unit 83 controls the electric motor 58 to rotate the shift drum 50 in such a manner that a gear-shift rotation angle is less than 60 degrees. With rotation of the shift drum 50 by the gear-shift rotation angle, the shift forks 491 through 493 move the sliders 451 through 453 in the axial direction of the shaft 21 or 22.

Abstract: Incongruity sense of a driver due to dog clunking noise can be reduced with reduction of dog clunking noise. A fifth-speed driving gear (425) and a sixth-speed driving gear (426) are arranged on a driving shaft (41) along an axial direction. A first slider (451) is disposed to be movable in the axial direction between the fifth-speed driving gear (425) and the sixth-speed driving gear (426). The first slider (451) is not rotatable on the driving shaft (41). In the axial direction, the sum of the widths of the fifth-speed driving gear (425) and the sixth-speed driving gear (426) is smaller than the maximum width of the first slider (451).

Abstract: An automated shift control device suppresses overload of the shift motor and reduces the time from beginning to completion of a gear shifting operation. A transmission has a plurality of pairs of speed change gears and a gear selecting mechanism. A shift motor drives the gear selecting mechanism. A shift power transmission mechanism transmits power from the shift motor to the gear selecting mechanism. A torque limiter has a third reduction gear and a third shaft forming a part of the shift power transmission mechanism. The torque limiter transmits power from the shift motor as torque. When the transmitted torque is not more than a predetermined limit torque, the third reduction gear co-rotates with the third shaft. When the transmitted torque exceeds the predetermined limit torque, the third reduction gear rotates relative to the third shaft to limit the transmitted torque to the predetermined limit torque or less.

Abstract: There is provided a time-division duplex transmit-receive apparatus in which the respective amplitude and phase characteristics of N sets of transmitting unit-receiving unit pair connected with N antenna elements are corrected all together and at the same time. At the time of reception, the reference signal from reference signal generator is branched into N reference signals. The branched reference signal is applied to the reception system through the transmit-receive switching switch. The reception-side error detector detects the error between the output signal of the reception-side amplitude-phase correction circuit and the reference signal to control the reception-side amplitude-phase correction circuit so that the error becomes zero. At the time of transmission, a part of transmitting signal is applied to the reception system through the antenna path.

Abstract: An automatic change gear control device for a motorcycle having a manually operated clutch operation member achieves both easy clutch operation and secure freedom of drive. A clutch is connected and disconnected to change gears in a transmission capable of freely changing gears in plural stages. A clutch actuator drives the clutch. A clutch operation unit has a manually-operated clutch lever. An ECU controls the clutch actuator based on driver operation of the clutch lever.

Abstract: There is provided a time-division duplex transmit-receive apparatus in which the respective amplitude and phase characteristics of N sets of transmitting unit-receiving unit pair connected with N antenna elements are corrected all together and at the same time. At the time of reception, the reference signal from reference signal generator is branched into N reference signals. The branched reference signal is applied to the reception system through the transmit-receive switching switch. The reception-side error detector detects the error between the output signal of the reception-side amplitude-phase correction circuit and the reference signal to control the reception-side amplitude-phase correction circuit so that the error becomes zero. At the time of transmission, a part of transmitting signal is applied to the reception system through the antenna path.

Abstract: A bearing system can reduce the relative velocity between a bearing member and a rotation shaft and a rotating member to decrease a load on the bearing member although the rotation shaft and the rotating member rotate in opposite directions with the bearing member therebetween. The bearing system includes a case and a rotation shaft supported by the case. A rotating member is disposed coaxially outside the rotation shaft and rotates in the direction opposite to that of the rotation shaft. A housing is interposed between the rotation shaft and the rotating member and is fixed to the case. A bearing member that rotatably supports the rotating member is interposed between the housing and the rotating member.

Abstract: A wired-circuit-board assembly sheet is provided having removable portions that are easily removable without any generation of metal powder. The wired-circuit-board assembly sheet comprises a plurality of suspension boards with circuits, distinguishing marks for distinguishing defectiveness of the suspension boards with circuits, and a supporting sheet for supporting the suspension boards with circuits and the distinguishing marks, wherein openings are formed in the supporting sheet, and removable portions which are to be removed when the suspension boards with circuits are judged defective are located in the openings and also supported by the supporting sheet via joint portions formed of resin.

Abstract: A clutch failure detector is provided for detecting failure of an automatic clutch system. The clutch failure detector can include a current value detector and a determination device. Upon turning ON a main switch, an operation to disengage and engage a clutch can be performed by a clutch actuator, and a totalized value of current supplied to a clutch actuator can be calculated for a specific period of time while the clutch is in the process of engaging in the operation to disengage and engage the clutch. The totalized value can be compared with a preset threshold, and if a difference between the totalized value and the threshold is equal to or greater than a given value, it is determined that an automatic clutch system has a failure.

Abstract: An automated shift control device suppresses overload of the shift motor and reduces the time from beginning to completion of a gear shifting operation. A transmission has a plurality of pairs of speed change gears and a gear selecting mechanism. A shift motor drives the gear selecting mechanism. A shift power transmission mechanism transmits power from the shift motor to the gear selecting mechanism. A torque limiter has a third reduction gear and a third shaft forming a part of the shift power transmission mechanism. The torque limiter transmits power from the shift motor as torque. When the transmitted torque is not more than a predetermined limit torque, the third reduction gear co-rotates with the third shaft. When the transmitted torque exceeds the predetermined limit torque, the third reduction gear rotates relative to the third shaft to limit the transmitted torque to the predetermined limit torque or less.

Abstract: An automatic transmission control apparatus that shortens the time from starting to finishing a shift motion and suppresses overload applied to a shift actuator. A transmission apparatus has a plurality of shift gear pairs with different transmission gear ratios, and a gear selecting mechanism that selects a shift gear pair transmitting power. A shift motor drives the gear selecting mechanism. A shift power transmission mechanism transmits power of the motor to the gear selecting mechanism. A mechanical fuse within the shift power transmission mechanism generates an irreversible state change such that the transmission power becomes equal to or less than a predetermined value if the transmission power exceeds the predetermined value.

Abstract: An automatic change gear control device for a motorcycle having a manually operated clutch operation member achieves both easy clutch operation and secure freedom of drive. A clutch is connected and disconnected to change gears in a transmission capable of freely changing gears in plural stages. A clutch actuator drives the clutch. A clutch operation unit has a manually-operated clutch lever. An ECU controls the clutch actuator based on driver operation of the clutch lever.