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公开(公告)号：US5163884A
公开(公告)日：1992-11-17
申请号：US694094
申请日：1991-05-01
CPC分类号： F16H15/14 , F16H37/0853
摘要： A friction-type stepless speed change device includes a frictional transmission elements composed of a pair of driving discs connected to an input shaft, and an annular driven disc connected to an output shaft and embraced between and urged against opposite conical surfaces of the driving discs into wedge-engagement to generate frictional force and allow power transmission from the driving discs to the driven disc. The driving discs are at a variable eccentricity relative to the driven disc, with which an effective pitch diameter of the driving discs is varied to effect a stepless speed change. For reducing the size of the frictional transmission elements while preserving a required torque capacity, the device further comprises a driving rotary unit for transmitting power from the input shaft to the driving discs at an increased rotational speed, and a driven rotary unit for transmitting power from the driven disc to the output shaft at a reduced rotational speed.
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公开(公告)号：US4920827A
公开(公告)日：1990-05-01
申请号：US317181
申请日：1989-02-28
申请人： Kikuzo Takamiya , Yoshitaka Tamura , Yoichi Shibayama , Ritsuo Nishimura , Kiyofumi Hirai , Hiromitsu Serizawa
发明人： Kikuzo Takamiya , Yoshitaka Tamura , Yoichi Shibayama , Ritsuo Nishimura , Kiyofumi Hirai , Hiromitsu Serizawa
CPC分类号： F16H37/086 , F16H15/54
摘要： A stepless speed change device has an input shaft and an output shaft. The device inlcudes a planetary carrier proviced at an inner end of the input shaft, a sun gear provided at an inner end of the output shaft to be in mesh with planet gears carried on the planetary carrier, and an internal gear in mesh with the planet gears to form a planetary gear. The device further includes a driven rotor rotatable about the input shaft and in the form of a hollow cylinder having flanges at both ends and concentrically connected to the internal gear, a driving rotor enclosing the driven rotor and including two members connected to the input shaft on both sides of the driven rotor, and an intermediate friction transmission ring whose eccentricity is adjustable and interposed between the flanges of the driven rotor and between the two members of the driving rotor for transmitting rotating power therebetween.
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公开(公告)号：US5045037A
公开(公告)日：1991-09-03
申请号：US544618
申请日：1990-06-27
CPC分类号： F16H15/14 , F16H37/084
摘要： A friction stepless speed change device includes an input shaft, a driven shaft and an output shaft arranged on a common axis, and a countershaft rotatably provided in parallel with the common axis. The device further includes tow rockable arms rockable about the countershaft, a cylindrical driving rotary assembly rotatably provided on free ends of the rockable arms to enclose the driven shaft, a set of driving friction discs rotating together with the driving rotary assembly, and a set of driven friction discs rotating together with the driven shaft. The countershaft includes a first gear in mesh with a gear fixed to the input shaft, a second gear in mesh with a gear fixed to the driving rotary assembly, and a third gear in mesh with a sun gear of a planetary gear provided on the driven shaft. The output shaft is integrally formed with an internal gear in mesh with planet gears of the planetary gear.
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公开(公告)号：US5030183A
公开(公告)日：1991-07-09
申请号：US535066
申请日：1990-06-08
CPC分类号： F16H37/0853
摘要： A friction stepless speed change device includes an input shaft, an output shaft, a countershaft provided in parallel with the input and output shafts on one side thereof, two rocking arms rockable about the countershaft, a cylindrical driven rotary assembly rotatably supported on free ends of the rocking arms to enclose the input shaft, a set of driving friction discs rotating together with the input shaft, and a set of driven friction discs rotating together with the driven rotary assembly. The sets of the driving and driven friction discs are wedge-engaged with each other. A gear fixed to the driven rotary assembly is in mesh with one gear of an intermediate gear assembly, and a gear arranged on a planet carrier is in mesh with the other gear of the intermediate gear assembly. Planet gears journaled on the planet carrier are in mesh with an internal gear integrally fixed to the input shaft, and a sun gear integrally formed on the output shaft is in mesh with the planat gears.
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公开(公告)号：US4934205A
公开(公告)日：1990-06-19
申请号：US284407
申请日：1988-12-14
CPC分类号： F16H15/14
摘要： The invention relates to a stepless speed change device which comprises: an input shaft and an output shaft concentric to each other, a disc progressively thinner toward its outer periphery and fixed to the input shaft, a hollow cylinder fixed to the output shaft for enclosing the disc, a ring progressively thinner toward its inner periphery opposite to that of the disc and fixed to an inner circumference of the hollow cylinder in the same plane as that of the disc, and an intermediate transmitting device having two discs for embracing the ring and the disc on both sides thereof and being movable from a concentric position with the input and output shafts to eccentric positions with desired eccentricities therefrom in a stepless manner. With the above arrangement, the input shaft may be used as an output shaft, and the output shaft may be used as an input shaft.
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公开(公告)号：US5056630A
公开(公告)日：1991-10-15
申请号：US320823
申请日：1989-03-07
申请人： Yoshihiko Fujii , Bunji Mutoh , Yoshitaka Tamura , Kiyofumi Hirai
发明人： Yoshihiko Fujii , Bunji Mutoh , Yoshitaka Tamura , Kiyofumi Hirai
摘要： A wheel rim for a two-wheeled vehicle has a spray coated metallic and/or ceramic layer covering at least a part of a rim surface with which a brake shoe is brought into contact when a brake is applied.
摘要翻译： 用于两轮车辆的轮辋具有覆盖金属和/或陶瓷层的喷涂金属和/或陶瓷层，其覆盖当施加制动器时制动蹄与其接触的边缘表面的至少一部分。
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公开(公告)号：US4931796A
公开(公告)日：1990-06-05
申请号：US271963
申请日：1988-11-16
申请人： Yoshinori Hasegawa , Kiyofumi Hirai
发明人： Yoshinori Hasegawa , Kiyofumi Hirai
CPC分类号： H03M1/70
摘要： In a digital-to-analog conversion circuit, a level detector is used to determine when the digital signal is lower than a predetermined value. When a predetermined time has expired, after the level detection, an inversion detector detects an inversion in polarity of the digital signal. As a result, a control signal is produced to shift the digital signal input to the digital-to-analog (D/A) converter and to attenuate the output analog signal.
摘要翻译： 在数模转换电路中，使用电平检测器来确定数字信号何时低于预定值。 当预定时间到期时，在电平检测之后，反相检测器检测数字信号的极性反转。 结果，产生控制信号以将输入的数字信号移位到数模（D / A）转换器并衰减输出模拟信号。
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