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45 条记录 (耗时 0.031 秒)

    Rolling bearing
    1.
    发明授权
    Rolling bearing 失效
    滚动轴承

    公开(公告)号：US5137375A

    公开(公告)日：1992-08-11

    申请号：US699901

    申请日：1991-05-14

    申请人： Yasuo Murakami ,  Kyozaburo Furumura ,  Shinichi Shirota ,  Shigeru Okita

    发明人： Yasuo Murakami ,  Kyozaburo Furumura ,  Shinichi Shirota ,  Shigeru Okita

    IPC分类号： C21D9/36 ,  C22C38/00 ,  C22C38/44 ,  C23C8/38 ,  C23C8/80 ,  F16C33/30 ,  F16C33/62

    CPC分类号： C21D9/36 ,  C23C8/80 ,  F16C33/30 ,  F16C33/62 ,  Y10S384/912

    摘要： A rolling bearing having bearing rings and rolling members wherein at least one of the bearing rings and the rolling members essentially consists of an alloy steel which contains carbide-forming elements. The bearing rings and the rolling members are subjected to carburizing or carbo-nitriding and then hardening to form a rolling surface layer. The content of retained austenite (.gamma..sub.R vol %) in the rolling surface layer is from 20 to 45% by volume and the hardness (Hv) of the rolling surface layer reinforced by dispersion of fine carbides or carbonitrides with an average grain size of from 0.5 to 1.5 .mu.m with regard to the content of the retained austenite (.gamma..sub.R vol %) is within the range of:-4.7.times.(.gamma..sub.R vol %)+920.ltoreq.Hv.ltoreq.-4.7.times.(.gamma..sub.R vol %)+1020.

    摘要翻译： 一种具有轴承环和滚动件的滚动轴承，其中至少一个轴承环和滚动件基本上由含有碳化物形成元件的合金钢组成。 对轴承圈和滚动体进行渗碳或碳氮化，然后进行硬化以形成滚动表面层。 滚动面层中的残留奥氏体含量（γR vol％）为20〜45体积％，通过将碳化硅或碳氮化钛的平均粒径分散而得到的滚动面层的硬度（Hv） 相对于残留奥氏体（γR vol％）的含量为0.5〜1.5μm的范围为：-4.7×（γR vol％）+ 920

    Ball-and-roller bearing
    3.
    发明授权
    Ball-and-roller bearing 失效
    滚珠轴承

    公开(公告)号：US5147140A

    公开(公告)日：1992-09-15

    申请号：US799437

    申请日：1991-11-26

    申请人： Yasuo Murakami ,  Shinichi Shirota ,  Shigeru Okita

    发明人： Yasuo Murakami ,  Shinichi Shirota ,  Shigeru Okita

    IPC分类号： F16C33/32 ,  C21D7/06 ,  C21D9/40 ,  C23C8/32 ,  F16C33/30 ,  F16C33/58 ,  F16C33/62

    CPC分类号： C21D9/40 ,  F16C33/30 ,  F16C33/62 ,  Y10S384/912

    摘要： A ball-and-roller bearing provided with a bearing ring and rolling element has the surface hardness of at least one of the bearing ring and rolling element of Hv 900 or more and the minimal compression residual stress of 100 kgf/mm.sup.2 or more in the depth from the surface of the bearing ring and/or rolling element to the depth equivalent to a 2% of the mean diameter of the rolling element and at the same time, the bearing is closely sealed to prevent any foreign particles from being ingressed thereinto, thus making possible a significant improvement of its longevity.

    摘要翻译： 设有轴承圈和滚动体的滚珠轴承具有Hv900以上的轴承环和滚动体中的至少一个的表面硬度，并且在最小的压缩残余应力为100kgf / mm 2以上的情况下 从轴承圈和/或滚动元件的表面的深度到相当于滚动元件的平均直径的2％的深度，并且同时密封轴承以防止任何外来的颗粒进入其中， 从而可以显着改善其寿命。

    Rolling bearing
    4.
    发明授权
    Rolling bearing 有权
    滚动轴承

    公开(公告)号：US06342109B1

    公开(公告)日：2002-01-29

    申请号：US09420836

    申请日：1999-10-19

    申请人： Hiromichi Takemura ,  Kazuo Sekino ,  Shigeru Okita ,  Yasuo Murakami

    发明人： Hiromichi Takemura ,  Kazuo Sekino ,  Shigeru Okita ,  Yasuo Murakami

    IPC分类号： C23C822

    CPC分类号： F16C33/62 ,  F16C2240/54 ,  Y10S384/913

    摘要： As a steel material for an inner race, an outer race and a rolling element constituting a rolling bearing, there is used one containing carbon (C) and chromium (Cr) in an amount of 0.65 wt % to 1.10 wt % and 2.0 wt % to 6.0 wt %, respectively. At least one of the inner race, the outer race and the rolling element is formed from the steel material. The inner race, outer race and the rolling element thus formed is then subjected to hardening, tempering and polishing. Further, a chromium oxide layer (Cr2O3) having a thickness of 5 nm to 300 nm is formed on a race track surface of at least one of the inner race, the outer race and the rolling element. If the rolling bearing is used in operation under the lubrication at a high traction coefficient with water mixed therein, finely particulate molybdenum carbide and/or vanadium carbide having a particle diameter of 50 nm to 300 nm is distributed in the matrix.

    摘要翻译： 作为构成滚动轴承的内圈，外圈和滚动体的钢材，使用含有0.65重量％〜1.10重量％的碳（C）和铬（Cr），2.0重量％ 至6.0重量％。 内圈，外圈和滚动体中的至少一个由钢材形成。 然后将如此形成的内圈，外圈和滚动元件进行硬化，回火和抛光。 此外，在内圈，外圈和滚动体中的至少一个的座圈表面上形成有厚度为5nm〜300nm的氧化铬层（Cr 2 O 3）。 如果在与水混合的高牵引系数的润滑下使用滚动轴承，则在基体中分布有粒径为50nm〜300nm的微细的碳化钼和/或碳化钒。

    Rolling bearing
    5.
    发明授权
    Rolling bearing 有权

    公开(公告)号：US07137741B2

    公开(公告)日：2006-11-21

    申请号：US10310900

    申请日：2002-12-06

    申请人： Shinji Fujita ,  Youichi Matsumoto ,  Yasuo Murakami ,  Nobuaki Mitamura ,  Shigeru Okita

    发明人： Shinji Fujita ,  Youichi Matsumoto ,  Yasuo Murakami ,  Nobuaki Mitamura ,  Shigeru Okita

    IPC分类号： F16C33/58 ,  F16C33/32 ,  F16C33/00

    CPC分类号： F16C33/30 ,  F16C33/62

    摘要： A rolling bearing intended for longer life by improving seizure resistance and wear resistance in the circumstance with slip contact or in the circumstance where lubricant tends to be exhausted, which is manufactured by applying carburization or carbonitridation to an Si-added material to disperse and precipitate carbides or carbonitrides containing Si or Si—X (X=one or more of Mn, Mo, and Cr) thereby improving the seizure resistance and the wear resistance by the self-lubrication effect thereof, the size of the carbides or carbonitrides being preferably 10 μm or less for preventing flaking, and the area ratio for the carbides or carbonitrides being preferably 1.0–30% for obtaining sufficient self-lubrication effect.

    Strength evaluating method for aluminum die cast part, aluminum die cast part, and defect detecting method for the same
    6.
    发明授权
    Strength evaluating method for aluminum die cast part, aluminum die cast part, and defect detecting method for the same 有权
    铝压铸件的强度评估方法，铝压铸件及其缺陷检测方法

    公开(公告)号：US09383343B2

    公开(公告)日：2016-07-05

    申请号：US13581185

    申请日：2011-10-28

    申请人： Munetaka Mitsumura ,  Shigeru Okita

    发明人： Munetaka Mitsumura ,  Shigeru Okita

    IPC分类号： G01N29/44 ,  B62D1/16 ,  C22C21/00 ,  G01N23/04 ,  G01N29/07 ,  G01N3/20

    CPC分类号： G01N29/4445 ,  B62D1/16 ,  C22C21/00 ,  G01N3/20 ,  G01N23/046 ,  G01N29/07 ,  G01N2203/0658 ,  G01N2223/419 ,  G01N2291/0289

    摘要： There is provided an aluminum die cast part strength evaluating method is provided for correctly evaluating strength of an actual aluminum die cast part. Strength of the actual aluminum die cast part will be correctly evaluated by conducting ultrasonic inspection of a predetermined range of a high stress region of an aluminum die cast part, which is found out through stress analysis beforehand, for an internal defect, and evaluating that the aluminum die cast part has a predetermined strength if the maximum internal defect area within the predetermined range is equal to or less than a predetermined value. Moreover, an actual aluminum die cast part with a predetermined strength will be evaluated correctly by: evaluating strength using the aluminum die cast part strength evaluating method and setting the maximum-possible internal defect area within the predetermined range of the high stress region to 0.8 mm2 or less.

    摘要翻译： 提供了一种用于正确评估实际铝压铸件的强度的铝压铸部件强度评估方法。 对于内部缺陷，通过预先通过应力分析发现的铝压铸件的高应力区域的预定范围的超声波检查来对实际的铝压铸部件的强度进行正确评价， 如果在预定范围内的最大内部缺陷面积等于或小于预定值，则铝压铸件具有预定的强度。 此外，通过以下方式，可以正确地评价具有规定强度的实际的铝压铸部件：使用铝压铸部件强度评价方法评价强度，将高应力区域的规定范围内的最大可能的内部缺陷面积设定为0.8mm 2 或更少。

    Rolling bearing and heat treatment method therefor
    8.
    发明授权
    Rolling bearing and heat treatment method therefor 失效
    滚动轴承及其热处理方法

    公开(公告)号：US06325867B1

    公开(公告)日：2001-12-04

    申请号：US08251575

    申请日：1994-05-31

    申请人： Shigeru Okita ,  Yasuo Utsumi ,  Akihiro Kiuchi

    发明人： Shigeru Okita ,  Yasuo Utsumi ,  Akihiro Kiuchi

    IPC分类号： C23C834

    CPC分类号： F16C33/30 ,  C21D1/18 ,  C21D1/78 ,  C21D9/40 ,  C23C8/32 ,  F16C33/64 ,  Y10S148/906 ,  Y10T428/12458

    摘要： A rolling bearing contains no more than 0.3 wt % of nitrogen in a grinding allowance portion after carbonitriding and hardening heat treatments, contains from 0.9 wt % (inclusive) up to 1.6 wt % (inclusive) of carbon and from 0.05 wt % (inclusive) up to 0.3 wt % (inclusive) of nitrogen in the surface layer of the finished part and has a nitrogen gradient of no more than 0.5 wt %/mm in the surface layer of the finished part. The rolling bearings are improved in grinding efficiency and which have their rolling life extended significantly.

    摘要翻译： 在碳氮共渗和硬化热处理之后，滚动轴承在研磨余量部分中含有不超过0.3重量％的氮，含有0.9重量％（含）至1.6重量％（含）的碳和0.05重量％（含） 在最终部件的表层中最多含有0.3重量％（含氮）氮，并且在成品部件的表面层中具有不超过0.5重量％/ mm 3的氮梯度。 滚动轴承的研磨效率提高，滚动寿命显着延长。

    Apparatus and method for trellis decoder
    10.
    发明授权
    Apparatus and method for trellis decoder 失效
    网格解码器的装置和方法

    公开(公告)号：US5651032A

    公开(公告)日：1997-07-22

    申请号：US334349

    申请日：1994-11-02

    申请人： Shigeru Okita

    发明人： Shigeru Okita

    IPC分类号： H03M13/41 ,  H04L1/00

    CPC分类号： H03M13/6502 ,  H03M13/256 ,  H03M13/3961 ,  H03M13/41

    摘要： A digital data processing apparatus capable of reducing a circuit scale without deteriorating error-correcting capability, and capable of reducing the bit number of a branch metric calculating circuit. The apparatus includes: a region determining portion which determines an optimal bit number corresponding to the number of representative symbol groups; a delaying portion which delays an output from the region determining portion for as long as a coded bit is decoded by a Viterbi decoding portion; and a decoding portion which inputs and decodes an output from the delaying portion and a coded bit that is decoded by the Viterbi decoding portion so as to be decoded, and which outputs the uncoded bit.

    摘要翻译： 一种数字数据处理装置，能够在不恶化纠错能力的情况下降低电路规模，能够减少分支量度计算电路的位数。 该装置包括：区域确定部分，其确定对应于代表符号组的数量的最佳比特数; 只要编码比特被维特比解码部分解码，延迟部分就延迟来自区域确定部分的输出; 以及解码部分，其输入和解码来自延迟部分的输出和由维特比解码部分解码的编码比特，以便被解码，并且其输出未编码比特。