公开(公告)号：US20130118632A1

公开(公告)日：2013-05-16

申请号：US13806415

申请日：2011-07-13

Applicant: Mitsuru Sawamura ,  Hitoshi Asahi ,  Eiji Tsuru ,  Jun Agata

Inventor： Mitsuru Sawamura ,  Hitoshi Asahi ,  Eiji Tsuru ,  Jun Agata

IPC: F16L9/02 ,  B21B23/00

CPC classification number: F16L9/02 ,  B21B23/00 ,  C21D8/0226 ,  C21D8/0263 ,  C21D8/105 ,  C21D9/14 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14

Abstract: A steel pipe with dual phase structure includes, as chemical composition, by mass %, C: 0.07% to 0.15%, Si: 0.1% to 0.5%, Mn: 0.8% to 1.9%, Nb: 0.020% to 0.10%, P: limited to 0.05% or less, S: limited to 0.01% or less, Al: limited to 0.1% or less, and a balance consisting of iron and unavoidable impurities, wherein, when [X] is amount of element X in mass %, carbon equivalent Ceq defined by Equation of Ceq=[C]+[Mn]/6 is 0.25 to 0.40 and [Nb]×[C]≧0.002 is satisfied, and includes, as metallographic structure, by area %, ferrite of 80% to 98% and martensite, residual austenite, or mixture thereof of 2% to 20% in total, wherein average grain size of ferrite is 1 μm to less than 8 μm and average grain size of martensite, residual austenite, or mixture thereof is 0.1 μm to 2 μm.

Abstract translation: 具有双相结构的钢管以质量％计含有C：0.07〜0.15％，Si：0.1〜0.5％，Mn：0.8〜1.9％，Nb：0.020〜0.10％，P ：限于0.05％以下，S：0.01％以下，Al：0.1％以下，余量由铁和不可避免的杂质构成，其中，[X]为质量％ ，Ceq = [C] + [Mn] / 6的等式定义的碳当量Ceq为0.25〜0.40，[Nb]×[C]> = 0.002，作为金相组织，以面积％计， 80％〜98％，马氏体，残余奥氏体或其混合物总计为2％〜20％，其中铁素体的平均粒径为1μm〜小于8μm，马氏体，残余奥氏体或其混合物的平均粒径 为0.1〜2μm。

公开(公告)号：US07967926B2

公开(公告)日：2011-06-28

申请号：US12462218

申请日：2009-07-30

Applicant: Eiji Tsuru ,  Hitoshi Asahi

Inventor： Eiji Tsuru ,  Hitoshi Asahi

IPC: C21D9/08

CPC classification number: C22C38/02 ,  B21C37/065 ,  B21C37/08 ,  B21C37/0822 ,  B21C37/0826 ,  C21D9/08 ,  C21D9/50 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  Y10T29/18

Abstract: The present invention relates to UOE steel pipe excellent in collapse characteristics formed by the UOE production method and a method for forming this UOE steel pipe, said UOE steel pipe characterized in that a ratio between compression and tension of yield strength in the circumferential direction is at least 1.05 near the inside surface and is at least 0.9 to not more to 1.0 from the center of plate thickness to the outside surface.

Abstract translation: 本发明涉及通过UOE制造方法形成的具有优异的塌陷特性的UOE钢管和形成该UOE钢管的方法，所述UOE钢管的特征在于，圆周方向的屈服强度的压缩与张力之比为 在内表面附近至少为1.05，并且从板厚中心到外表面为至少0.9至不大于1.0。

公开(公告)号：US07524001B2

公开(公告)日：2009-04-28

申请号：US10535415

申请日：2003-11-20

Applicant: Eiji Tsuru ,  Shinji Uchida

Inventor： Eiji Tsuru ,  Shinji Uchida

IPC: B62D55/24

CPC classification number: B62D55/253 ,  B62D55/21 ,  B62D55/244

Abstract: A rubber crawler has a structure in which connecting members are sequentially fitted onto wing portions adjacent to each other without using steel cords for resisting tensile force applied to the rubber crawler. Accordingly, the rubber crawler of the present invention has excellent characteristics in that breakage of steel cords due to the tensile force can be prevented, and torsion of the rubber crawler can be reduced.

Abstract translation: 橡胶履带具有这样的结构，其中连接构件依次装配到彼此相邻的翼部上，而不使用用于抵抗施加到橡胶履带的张力的钢丝绳。 因此，本发明的橡胶履带具有优异的特性，能够防止由于张力而导致的钢帘线的破损，能够降低橡胶履带的扭转。

公开(公告)号：US20080257008A1

公开(公告)日：2008-10-23

申请号：US11884860

申请日：2006-02-22

Applicant: Eiji Tsuru ,  Takuya Hara ,  Hitoshi Asahi ,  Hiroshi Morimoto ,  Yoshio Terada ,  Tatsuya Yoshida ,  Kouichi Shinada

Inventor： Eiji Tsuru ,  Takuya Hara ,  Hitoshi Asahi ,  Hiroshi Morimoto ,  Yoshio Terada ,  Tatsuya Yoshida ,  Kouichi Shinada

IPC: B21C37/08 ,  B23K9/02 ,  C21D3/06 ,  C21D9/08 ,  C22C38/00 ,  F16L9/02

CPC classification number: B23K31/027 ,  B21C37/08 ,  B23K33/006 ,  B23K2101/06 ,  C21D3/06 ,  C21D9/08 ,  C21D9/50 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/58 ,  Y10T29/5185

Abstract: The present invention provides a high strength welded steel pipe superior in weld zone embrittlement crack characteristics and a method of production of the same, that is, a method of production of a welded steel pipe superior in hydrogen embrittlement cracking resistance of weld metal characterized by seam welding from the inner and outer surfaces by a tensile strength of 850 MPa or more, then expanding or reducing the size of the pipe for correction, which method of production of welded steel pipe characterized in that the hydrogen concentration of the preceding weld metal is 0.2 cc or less per 100 g at ordinary temperature.

Abstract translation: 本发明提供了一种焊接区脆性裂纹特性优异的高强度焊接钢管及其制造方法，即以接缝为特征的焊接金属的耐氢脆裂纹性优异的焊接钢管的制造方法 从内外表面拉伸强度为850MPa以上，然后扩大或缩小用于校正的管道的尺寸，该焊接钢管的制造方法的特征在于，前述焊接金属的氢浓度为0.2 在常温下每100g 100g以下。

公开(公告)号：US20060142374A1

公开(公告)日：2006-06-29

申请号：US10526898

申请日：2003-09-05

Applicant: Eiji Tsuru ,  Michio Toda ,  Kazuma Hirata

Inventor： Eiji Tsuru ,  Michio Toda ,  Kazuma Hirata

IPC: A61K31/404 ,  A61K9/48 ,  A61K9/20 ,  C07D209/14

CPC classification number: A61K31/404 ,  C07D209/08

Abstract: A crystal for oral solid medicament comprised of indoline compound (KMD-3213) which exerts α1-adrenaline receptor blocking effect, is useful as a therapeutic agent for dysuria and is represented by the formula: (I) wherein in the powder X-ray diffraction pattern, the compound is characterized by main peaks of 5.5°±0.2°, 6.1°±0.2°, 9.8°±0.2°, 11.1°±0.2°, 12.2°±0.2°, 16.4°±0.2°, 19.7°±0.2° and 20.0°±0.2° as 2θ. There is further provided an oral solid medicament for dysuria treatment containing the crystal as an active ingredient.

Abstract translation: 用于口服固体药物的晶体，其由发挥α1-肾上腺素受体阻断作用的二氢吲哚化合物（KMD-3213）组成，可用作排尿困难的治疗剂，并由下式表示：（I）其中在粉末X射线衍射 该化合物的特征是主峰为5.5°±0.2°，6.1°±0.2°，9.8°±0.2°，11.1°±0.2°，12.2°±0.2°，16.4°±0.2°，19.7°±0.2 °和20.0°±0.2°为2θ。 还提供了含有晶体作为活性成分的排尿困难的口服固体药物。

公开(公告)号：US20050217768A1

公开(公告)日：2005-10-06

申请号：US10518663

申请日：2003-06-12

Applicant: Hitoshi Asahi ,  Eiji Tsuru

Inventor： Hitoshi Asahi ,  Eiji Tsuru

IPC: B21C37/08 ,  C21D8/10 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C21D9/08

CPC classification number: B21C37/08 ,  C21D8/10 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  Y10S148/909

Abstract: The present invention provides a method of production of oil country tubular goods having a small drop in collapse pressure after expansion and having a collapse pressure recovering by low temperature ageing at about 100° C. and oil country tubular goods obtained by this method of production. This method of production comprises hot rolling a steel slab having amounts of addition of C, Mn, P, S, Nb, Ti, Al, and N in specific ranges and having a balance of iron and unavoidable impurities and shaping the steel strip coiled at a temperature of not more than 300° C. as it is into a tube. Alternatively, it comprises heating steel pipe having amounts of addition of C, Mn, P, S, Nb, Ti, Al, and N in specific ranges and having a balance of iron and unavoidable impurities to a temperature of the Ac3 [° C.] to 1150° C., then cooling it in a range of 400 to 800° C. at a rate of 5 to 50° C./second.

Abstract translation: 本发明提供一种制造膨胀后的塌陷压力小而且在约100℃下通过低温老化回收的塌陷压力和通过该生产方法获得的油管制品的油井筒制品的生产方法。 这种生产方法包括在特定范围内热轧具有C，Mn，P，S，Nb，Ti，Al和N的添加量的钢坯，并且具有铁和不可避免的杂质的平衡，并将钢带卷绕在 温度不超过300℃，因为它进入管中。 或者，它包括加热具有特定范围内的C，Mn，P，S，Nb，Ti，Al和N的量的钢管，并且将铁和不可避免的杂质的余量添加到Ac 3 ℃至1150℃，然后以5〜50℃/秒的速率在400〜800℃的范围内进行冷却。

公开(公告)号：US06742852B2

公开(公告)日：2004-06-01

申请号：US10181382

申请日：2002-07-17

Applicant: Eiji Tsuru ,  Koji Nakayama

Inventor： Eiji Tsuru ,  Koji Nakayama

IPC: B62D5524

CPC classification number: B62D55/244

Abstract: A coreless rubber crawler which cancels the difference in the amounts of deformation strains in the main body to improve the durability and which ensures transverse rigidity to prevent coming off of wheels, wherein a peripheral main cord and a reinforcing cord disposed on an outer periphery thereof are embedded in a main body having a thickness T, wherein an embedded depth H of the cord embedded in an outermost peripheral layer of the main body, the depth being measured from an inner peripheral surface of the main body, satisfies H≧½×T.

Abstract translation: 一种无芯橡胶履带，其抵消主体中的变形应变量的差异，以提高耐久性，并且确保横向刚度以防止车轮脱落，其中外围主绳和设置在其外周上的增强帘线是 嵌入在具有厚度T的主体中，其中嵌入在主体的最外周层中的帘线的嵌入深度H从主体的内周面测量的深度满足H> =½xT。

公开(公告)号：US06705648B1

公开(公告)日：2004-03-16

申请号：US09355704

申请日：1999-08-03

Applicant: Kazushi Maruyama ,  Eiji Tsuru ,  Haruyuki Nagayoshi

Inventor： Kazushi Maruyama ,  Eiji Tsuru ,  Haruyuki Nagayoshi

IPC: F16L2500

CPC classification number: F16L15/001 ,  E21B17/042 ,  F16L15/002

Abstract: A pipe joint comprising: a pin having a tapered male screw section formed on an outer circumferential face of an end of a pipe; a box having a tapered female screw section, which can be screwed to the tapered male screw section, formed on an inner circumferential face of an end of a pipe, wherein the tapered male screw section is screwed into the tapered female screw section, a top face of a male thread ridge of the tapered male screw section and a top face of a female thread ridge of the tapered female screw section have a predetermined width like a square screw thread, trapezoidal screw thread and buttress screw thread, and top faces of both thread ridges are inclined in a direction opposite to a tapered face of screw threads with respect to a face parallel to the pipe axis.

Abstract translation: 一种管接头，包括：销，其具有形成在管的端部的外周面上的锥形外螺纹部; 具有锥形阴螺纹部的箱体，该锥形内螺纹部分可以与锥形外螺纹部分螺纹连接，形成在管的端部的内周面上，其中锥形外螺纹部分拧入锥形内螺纹部分，顶部 锥形内螺纹部分的阳螺纹脊面和锥形阴螺纹部分的内螺纹脊的顶面具有如方螺纹，梯形螺纹和支撑螺纹的预定宽度，以及两者的顶面 螺纹脊相对于与管轴平行的面与螺纹的锥面相反的方向倾斜。