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    • 24. 发明授权
    • Ball-and-roller bearing
    • 滚珠轴承
    • US5338377A
    • 1994-08-16
    • US946638
    • 1992-09-18
    • Nobuaki MitamuraShigeru Okita
    • Nobuaki MitamuraShigeru Okita
    • C21D9/36C21D9/40C22C38/00C23C8/32C23C30/00F16C33/30F16C33/32F16C33/62C22C38/22C22C38/24
    • C21D9/40C21D9/36C23C8/32F16C33/30F16C33/62F16C2204/62F16C2204/64Y10S148/906Y10S384/912
    • In order to provide a ball-and-roller bearing that has a longer life and which exhibits higher reliability than the prior art products not only under lubrication in the presence of foreign matter but also under lubrication in clean conditions, according to the present invention, a bearing material that contains 0.2 to 1.0 wt % of carbon and at least 1 wt % in total of one or more elements selected from among chromium, molybdenum and vanadium is subjected to a carbonitriding treatment and a hardening heat treatment to make an alloy steel in which the area ratio of carbonitrides present in the surface layer of said bearing material per unit area is adjusted to be at least 10%, a maximum grain size of carbonitrides present in said surface layer being no more than 3 .mu.m, the content of retained austenite (.gamma..sub.R) in said surface layer being 25 to 45 vol %, and said surface layer having a surface hardness of at least 750 Hv. At least one of the races and rolling elements of the bearing is made of this alloy steel.
    • 为了提供一种滚珠轴承,其具有比现有技术的产品具有更长的使用寿命并且具有比现有技术的产品更高的可靠性,不仅在异物存在下的润滑下,而且在清洁条件下的润滑下,根据本发明, 将含有0.2〜1.0重量%碳和至少1重量%的一种或多种选自铬,钼和钒的元素的轴承材料进行碳氮共渗处理和硬化热处理,以使合金钢 其中存在于每单位面积的所述轴承材料的表面层中的碳氮化物的面积比被调节为至少10%,所述表面层中存在的碳氮化物的最大晶粒尺寸不大于3μm,保留的含量 所述表面层中的奥氏体(γR)为25〜45体积%,所述表面层的表面硬度为750Hv以上。 轴承中的至少一个座圈和滚动元件由该合金钢制成。
    • 28. 发明申请
    • OPTICAL RECEPTACLE
    • 光学接收器
    • US20080124029A1
    • 2008-05-29
    • US11779330
    • 2007-07-18
    • Nobuaki Mitamura
    • Nobuaki Mitamura
    • G02B6/38
    • G02B6/4246G02B6/3874G02B6/3893
    • The present invention relates to an optical receptacle which prevents the occurrence of a large impact by collision of a plug body with an optical propagation member. The optical receptacle includes a solid sleeve having a cavity hole into which the plug body is inserted from its one end side and which has an even inner diameter so as not to substantially define a gap with respect to an outer diameter of the plug body and an optical propagation member fixedly secured to the other end side of the cavity hole, with the solid sleeve being formed such that a length from an end portion of the cavity hole on the plug body insertion side to the optical propagation member is longer than a maximum length of extension due to the elastic body of the terminal member.
    • 光插座技术领域本发明涉及防止插头体与光传播部件的碰撞产生大的冲击的光插座。 光学插座包括具有空腔孔的实心套管,插塞体从其一端侧插入其中,并且具有均匀的内径,以便不相对于插塞本体的外径基本上限定间隙, 固定在空腔孔的另一端侧的光传播部件,其中实心套筒形成为使得从塞体主体插入侧的孔洞的端部到光传播部件的长度比最大长度长 由于端子构件的弹性体的延伸。
    • 29. 发明授权
    • Wavelength selective optical switch
    • 波长选择光开关
    • US07340126B2
    • 2008-03-04
    • US11319643
    • 2005-12-29
    • Nobuaki Mitamura
    • Nobuaki Mitamura
    • G02B6/24G02B26/08
    • G02B6/3588G02B6/2931G02B6/29395G02B6/3512G02B6/3556G02B6/356
    • A wavelength selective optical switch according to the present invention detects wavelengths of signal lights input to a signal light input port in a main body portion which performs the switching of optical paths for each wavelength by an angular control of a plurality of mirrors, and also, monitors the intensity of a monitor light which is generated in an internal light source and is given from a monitor light input port disposed in the main body portion to be led to a monitor light output port, to feedback control a reflecting surface angle of the mirror corresponding to the wavelength of the signal light which is not input to the signal light input port, so that the output intensity of the monitor light becomes maximum. As a result, it is possible to reliably control the reflective surface angle of the mirror corresponding to the wavelength of the signal light which is not input, and therefore, the crosstalk doe not occur even when the signal light is newly input.
    • 根据本发明的波长选择光开关,通过多个反射镜的角度控制来检测输入到主体部分中的信号光输入端口的波长,该信号光输入端口执行每个波长的光路的切换, 监视在内部光源中产生的监视光的强度,并且从设置在主体部分中的监视光输入端口给出以引导到监视器光输出端口,以反馈控制反射镜的反射表面角度 对应于未输入到信号光输入端口的信号光的波长,使得监视光的输出强度变得最大。 结果,可以可靠地控制与没有输入的信号光的波长相对应的反射镜的反射面角度,因此即使当新输入信号光时也不会发生串扰。