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    • 54. 发明授权
    • Drain mechanism for hydraulic power transmission joint
    • 液压传动接头排水机构
    • US06336539B1
    • 2002-01-08
    • US09571357
    • 2000-05-15
    • Hiroyuki NakanoKazuhisa ShimadaTadahiko KatoToshiharu TakasakiHirotaka KusukawaShigeo Murata
    • Hiroyuki NakanoKazuhisa ShimadaTadahiko KatoToshiharu TakasakiHirotaka KusukawaShigeo Murata
    • F16D3102
    • F16D43/284F16D31/02
    • A drain plug is disposed in a drain hole through which oil is discharged from a high-pressure chamber formed in a valve block. Within the drain plug there is arranged a drain pin that slidably opens and closes the drain hole. A fixed pin serves to restrict a displacement of the drain pin. A thermo-switch is located within a low-pressure chamber behind the drain pin in such a manner as to be urged by a return spring so that the drain pin is pressed to keep the drain hole closed. When a predetermined temperature is reached, the thermo-switch allows its head pin to extend, with the reaction force as a result of abutment of the head pin against the fixed pin causing the thermo-switch to retreat to release the pressing force exerted on the drain pin. In consequence, the drain pin is displaced by a high pressure toward the direction in which the drain hole is opened, allowing high-pressure oil to be drained into the low pressure side.
    • 排水塞设置在排水孔中,通过该排水孔从形成在阀块中的高压室排出油。 在排水塞内设有可滑动地打开和关闭排水孔的排水销。 固定销用于限制排水销的位移。 热开关位于排水管后面的低压室内,以便由复位弹簧推动,以便排水管被压紧以保持排水孔闭合。 当达到预定温度时,热敏开关允许其头销延伸,由于头销与固定销的邻接而产生反作用力,导致热敏开关退回以释放施加在该固定销上的压力 漏极引脚。 因此,排水销朝着排水孔打开的方向高压移位,允许将高压油排入低压侧。
    • 55. 发明授权
    • Optical transmission device and optical transmission system employing the same
    • 光传输装置及采用该传输装置的光传输系统
    • US06314217B1
    • 2001-11-06
    • US09663378
    • 2000-09-15
    • Junya KosakaTakayuki SuzukiHiroyuki Nakano
    • Junya KosakaTakayuki SuzukiHiroyuki Nakano
    • G02B628
    • H04B10/2935H04B2210/256Y10S372/703
    • An optical transmission device which reduces optical noise in an optical transmission system. The optical transmission device includes a core light amplifying unit, and a first buffer light amplifying unit for amplifying a first signal light from a first transmission path and an amplified second signal light from the core light amplifying unit. The first buffer light amplifying unit supplies the core light amplifying unit with the first signal light, and supplies the first transmission path with the amplified second signal light. Also provided is a second buffer light amplifying unit for amplifying a second signal light from a second transmission path and an amplified first signal light from the core light amplifying unit. The second buffer light amplifying unit supplies the core light amplifying unit with the second signal light, and supplies the second transmission path with the amplified first signal light.
    • 一种降低光传输系统中的光噪声的光传输装置。 光传输装置包括核心光放大单元和用于放大来自第一传输路径的第一信号光和来自核心光放大单元的放大的第二信号光的第一缓冲光放大单元。 第一缓冲光放大单元向核心光放大单元提供第一信号光,并且向第一传输路径提供放大的第二信号光。 还提供了用于放大来自第二传输路径的第二信号光和来自核心光放大单元的放大的第一信号光的第二缓冲光放大单元。 第二缓冲光放大单元向核心光放大单元提供第二信号光,并且向第二传输路径提供放大的第一信号光。
    • 59. 发明授权
    • Optical amplifier
    • 光放大器
    • US6091540A
    • 2000-07-18
    • US69772
    • 1998-04-30
    • Hiroyuki Nakano
    • Hiroyuki Nakano
    • G02F1/35H01S3/06H01S3/067H01S3/07H01S3/10H04B10/2525H04B10/291H04J14/02G02B6/26H01S3/091
    • H01S3/06758H04B10/25133H04B10/2525H04B10/291H04B10/2912H01S2301/06H04B2210/256H04J14/0221
    • An optical amplifier which amplifies a signal light, wherein a pumping light source outputting a pumping light, a first wavelength multiplexer multiplexing the signal light and the pumping light and providing a multiplexed light to a first doped fiber. A first doped fiber amplifying the signal light, a wavelength demultiplexer receiving the multiplexed light from the first doped fiber and separately outputting the amplified signal light and the pumping light. An optical component receiving the amplified signal light form the demultiplexer and attenuating the amplified signal light and a second wavelength multiplexer multiplexing the attenuated signal light received from the optical component and the demultiplexed pumping light received from the wavelength demultiplexer. A second doped fiber amplifying the attenuated signal light.
    • 一种放大信号光的光放大器,其中输出泵浦光的泵浦光源,第一波长多路复用器对信号光和泵浦光进行复用,并向第一掺杂光纤提供多路复用的光。 第一掺杂光纤放大信号光,波长解复用器接收来自第一掺杂光纤的复用光,并分别输出放大的信号光和泵浦光。 接收放大的信号光的光学部件形成解复用器并衰减放大的信号光,并且第二波长多路复用器将从光学部件接收的衰减信号光和从波长解复用器接收的解复用的泵浦光复用。 放大衰减信号光的第二掺杂光纤。