公开(公告)号：US4777008A

公开(公告)日：1988-10-11

申请号：US797810

申请日：1985-11-13

申请人： Isao Shirasu

发明人： Isao Shirasu

IPC分类号： G21C13/06 ,  F22B37/02 ,  F22B37/22 ,  G21C13/067 ,  G21D1/02 ,  G21C13/00

CPC分类号： F22B37/222 ,  G21C13/067 ,  Y02E30/40

摘要： In a steam generator for a pressurized water type nuclear reactor, for the purpose of isolating a water chamber in the steam generator from a coolant piping communicating with the water chamber, a plug is disposed in a nozzle section of the coolant piping, the plug is supported by a support arm having an angle adjusting screw and fixedly secured to a mount seat at a manhole communicating with the water chamber, and preferably, a cover is provided on the mount seat at the manhole.

摘要翻译： 在用于加压水型核反应堆的蒸汽发生器中，为了将蒸汽发生器中的水室与与水室连通的冷却剂管道隔离，在冷却剂管道的喷嘴部分中设置塞子，塞子 由具有角度调节螺钉的支撑臂支撑并且固定地固定到与水室连通的人孔处的安装座上，并且优选地，在所述安装座上设置有在所述人孔处的盖。

公开(公告)号：US4744251A

公开(公告)日：1988-05-17

申请号：US913305

申请日：1986-09-30

申请人： Isao Shirasu ,  Toshio Sanagawa

发明人： Isao Shirasu ,  Toshio Sanagawa

IPC分类号： G01N29/04 ,  G01M99/00 ,  G01N21/84 ,  G01N29/26 ,  G01N29/265 ,  G21C17/003 ,  G21C17/007 ,  G01N29/00

CPC分类号： G01N29/265 ,  G21C17/007 ,  G01N2291/02854 ,  G01N2291/044

摘要： An apparatus for examining a circumferential surface of each of a plurality of tubular members disposed in axially parallel relationship with each other has a rail adapted to extend between adjacent tubular members; a truck movable on and along the rail, a support frame having mounts at each end tiltably mounting the support frame on the truck for tilting around an axis extending along the rail, and a tilting mechanism connected to the support frame for tilting the support frame. A semi-circular shaped beam is mounted on the support frame for rotation around an axis through the center of the circle on which the semi-circular shaped beam lies and open laterally of the rail, and a sensing element is disposed at a predetermined position on the semi-circular shaped beam. The semi-circular shaped beam is tilted down by tilting the support frame when the truck is moved along the rail from one tubular member to the next, and is tilted up so as to partially surround the tubular member for carrying out the examination.

摘要翻译： 用于检查彼此轴向平行关系设置的多个管状构件中的每一个的圆周表面的装置具有适于在相邻的管状构件之间延伸的轨道; 在轨道上和沿轨道移动的卡车，支撑框架，每个端部可倾斜地将支撑框架安装在卡车上，用于围绕沿着轨道延伸的轴线倾斜;以及倾斜机构，其连接到支撑框架以倾斜支撑框架。 半圆形梁安装在支撑框架上，用于围绕通过半圆形梁所在的圆的中心的轴线旋转并且在轨道的横向上打开，并且感测元件设置在预定位置上 半圆形梁。 当卡车沿着轨道从一个管状部件移动到下一个管状部件时，半圆形梁通过倾斜支撑框架而向下倾斜，并且向上倾斜以部分地围绕管状部件进行检查。

公开(公告)号：US5097110A

公开(公告)日：1992-03-17

申请号：US558238

申请日：1990-07-26

申请人： Shoichi Hamada ,  Isao Shirasu ,  Tadashi Nagashima ,  Takashi Akaba ,  Shuhei Kuri ,  Takuya Kidera ,  Yasumi Nagura ,  Seiichi Kawaguchi ,  Takashi Ishide ,  Yoshio Hashimoto

发明人： Shoichi Hamada ,  Isao Shirasu ,  Tadashi Nagashima ,  Takashi Akaba ,  Shuhei Kuri ,  Takuya Kidera ,  Yasumi Nagura ,  Seiichi Kawaguchi ,  Takashi Ishide ,  Yoshio Hashimoto

IPC分类号： B23K26/06 ,  B23K26/10 ,  B23K26/14 ,  B23K26/28 ,  B23K37/02 ,  G02B5/08 ,  G02B5/28

CPC分类号： B23K37/0276 ,  B23K26/0643 ,  B23K26/106 ,  B23K26/142 ,  B23K26/1476 ,  B23K26/282 ,  G02B5/0808 ,  G02B5/0858 ,  G02B5/282 ,  B23K2201/06 ,  B23K2201/14

摘要： The known reflecting mirror for a laser beam conisting of a mirror base member and a high-reflectivity metal coating layer formed on the mirror base member for reflecting a laser beam, is improved so as to maintain a high mirror reflectivity without necessitating a cooling facility. The improvements reside in that a coating layer having a small diffusion coefficient is provided on the back surface side of the high-reflectivity metal coating layer, and/or in that at least one layer of dielectric coating layer or layers are provided on the surface of the high reflectivity metal coating layer. Also, an improved laser beam welding apparatus for an inner circumferential surface of a tube is provided by employing the aforementioned improved reflection mirror as a reflecting mirror in an optical condensing system included in a laser beam welding apparatus for an inner circumferential surface of a tube, which apparatus comprises a flexible tube including an optical fiber extended therethrough for transmitting a welding laser beam, said flexible tube being insertable into a work tube, a position detector for detecting a relative position of the flexible tube with respect to the work tube and fixing means of internally expansible type for fixing the flexible tube within the work tube, respectively provided at the front end portion of the flexible tube, a rotary cylinder rotatably supported from the flexible tube, guide support means mounted to the rotary cylinder in a relatively rotatable manner and being able to be held in contact with the inner wall surface of the work tube for holding the rotary cylinder concentrically with the work tube, rotary drive means having its output shaft disposed coaxially with said rotary cylinder for rotationally driving the rotary cylinder, an optical condensing system disposed within said rotary cylinder for leading the welding laser beam emanating from the front end of the optical fiber to the inner wall surface of the work tube in a condensed state, gas scavenging means for discharging metal vapor produced upon welding of the work tube, and gas cooling means for cooling the optical condensing system.

公开(公告)号：US4839495A

公开(公告)日：1989-06-13

申请号：US222170

申请日：1988-07-21

申请人： Takuya Kitera ,  Shoichi Urushibata ,  Masatoshi Sato ,  Tadashi Nagashima ,  Shoichi Hamada ,  Isao Shirasu ,  Yasumi Nakura ,  Michito Sakamoto ,  Takashi Ishide ,  Naruo Sakamoto ,  Masahiko Meka ,  Masaru Tomeoka

发明人： Takuya Kitera ,  Shoichi Urushibata ,  Masatoshi Sato ,  Tadashi Nagashima ,  Shoichi Hamada ,  Isao Shirasu ,  Yasumi Nakura ,  Michito Sakamoto ,  Takashi Ishide ,  Naruo Sakamoto ,  Masahiko Meka ,  Masaru Tomeoka

IPC分类号： B23K26/14 ,  B23K26/28

CPC分类号： B23K26/106 ,  B23K26/0665 ,  B23K26/123 ,  B23K26/142 ,  B23K26/1438 ,  B23K26/1476 ,  B23K26/206 ,  B23K26/282

摘要： An improved laser beam welding apparatus for an inner circumferential surface of a tube is disclosed herein, which apparatus comprises an elongated flexible tube containing an optical fiber extended along the length thereof so as to transmit a laser beam, position detecting means disposed in the vicinity of the top end of the flexible tube to determine relative positioning thereof with respect to a work tube in which the flexible tube is inserted, holding means provided with an expander and disposed adjacent to the position detecting means for holding the tip end of the flexible tube in the work tube, rotary drive means disposed closer to the tip end of the flexible tube than the holding means, a rotary cylinder connected to the rotary drive means to be rotated with respect to the flexible tube, guide means mounted on the rotary cylinder in a relatively rotatable manner with respect to the rotary cylinder and held in contact with the inner surface of the work tube for supporting the rotary cylinder in a concentric relation to the work tube, and an optical train arranged with the rotary cylinder for receiving a laser beam emitted from the optical fiber and focusing a reflected laser beam onto the inner surface of the work tube.

公开(公告)号：US5218258A

公开(公告)日：1993-06-08

申请号：US754516

申请日：1991-09-04

申请人： Isao Shirasu ,  Takashi Akaba ,  Tadashi Nagashima ,  Yoshimasa Tsukamoto ,  Kyoichi Yoshioka ,  Toshiiku Sashida

发明人： Isao Shirasu ,  Takashi Akaba ,  Tadashi Nagashima ,  Yoshimasa Tsukamoto ,  Kyoichi Yoshioka ,  Toshiiku Sashida

IPC分类号： H02N2/00 ,  B23K26/28 ,  H01L41/09 ,  H02N2/16

CPC分类号： H02N2/16 ,  B23K26/282

摘要： A small-sized ultrasonic motor can produce a high torque and a stable turning force. The ultrasonic motor has: a cylindrical casing, a hollow output shaft extending coaxially through the cylindrical casing supported rotatably by the casing a ring-like stator fixedly mounted on the inner surface of the cylindrical casing having piezoelectric elements fixed on the back surface thereof, a ring-like rotor mounted on the hollow output shaft and facing the front surface of the stator, and springs for pushing the rotor toward the stator. Also disclosed is a laser beam welding apparatus for welding the inner circumferential surface of a tube by using the ultrasonic motor.

公开(公告)号：US5177808A

公开(公告)日：1993-01-05

申请号：US604628

申请日：1990-10-29

申请人： Takeshi Satake ,  Tokuji Hayashi ,  Masayoshi Hachiwaka ,  Masakatsu Kimura ,  Koichi Suzuki ,  Takeji Akutsu ,  Yoshimasa Tsukamoto ,  Isao Shirasu

发明人： Takeshi Satake ,  Tokuji Hayashi ,  Masayoshi Hachiwaka ,  Masakatsu Kimura ,  Koichi Suzuki ,  Takeji Akutsu ,  Yoshimasa Tsukamoto ,  Isao Shirasu

IPC分类号： G02B6/38 ,  G02B6/42

CPC分类号： G02B6/3855 ,  G02B6/3814 ,  G02B6/3825 ,  G02B6/3847 ,  G02B6/3869 ,  G02B6/4296 ,  G02B6/3894

摘要： The present invention provides an optical energy beam transmission path structure comprising at least one pair of optical fibers each having a connection end, and at least one fiber connector for connecting the connection ends of the paired fibers substantially coaxially. A small axial air gap is formed between the connection ends of the paired fibers, and an annular clearance is formed immediately around the connection end of the glass body of each fiber.

公开(公告)号：US4883185A

公开(公告)日：1989-11-28

申请号：US57908

申请日：1987-11-02

申请人： Takashi Fujitani ,  Hiromi Uemura ,  Toshiaki Kishimoto ,  Masayuki Uchiyama ,  Isao Shirasu ,  Hideyuki Kurokawa ,  Takashi Nishioka ,  Kenji Kikukawa ,  Yoshinori Sato

发明人： Takashi Fujitani ,  Hiromi Uemura ,  Toshiaki Kishimoto ,  Masayuki Uchiyama ,  Isao Shirasu ,  Hideyuki Kurokawa ,  Takashi Nishioka ,  Kenji Kikukawa ,  Yoshinori Sato

IPC分类号： B23P19/00 ,  B25B29/02 ,  B66C13/04 ,  G21C13/06

CPC分类号： G21C13/06 ,  B23P19/001 ,  B25B29/02 ,  B66C13/04 ,  Y02E30/40

摘要： A suspension type transporter suspends a bolt drawing machine through a trolley and a hoist above a pressure container having many bolt attached thereto and transports the bolt drawing machine to a target position. A track settling portion having a guide is provided on an outer periphery of a lid of the pressure container. The suspension type transporter for the bolt drawing machine comprises a guide mechanism which restricts movement of the bolt drawing machine in the air by the guide. The guide mechanism of the transporter is provided with a position detector which can detect a position of the bolt drawing machine. A positioning controller of the suspension type transporter controls the transporter so that the transporter starts at slow speed, is then accelerated to a prescribed speed and is gradually decelerated near the target position.

摘要翻译： PCT No.PCT / JP85 / 00474 Sec。 371日期1987年11月2日 102（e）日期1987年11月2日PCT申请日1985年8月28日PCT公开号 出版物WO87 / 01364 日期：1987年3月12日。悬挂式运输机通过手推车和在其上附着许多螺栓的压力容器上方的提升机悬挂螺栓拉丝机，并将螺栓拉丝机运送到目标位置。 具有引导件的轨道沉降部分设置在压力容器的盖的外周上。 用于螺栓拉拔机的悬挂式运输机包括一个引导机构，该引导机构通过引导件限制螺栓拉丝机在空气中的移动。 运送器的引导机构设置有能够检测螺栓拉拔机的位置的位置检测器。 悬挂式运输机的定位控制器控制运输车，使运输车以低速开始，然后加速到规定的速度，并在目标位置附近逐渐减速。