公开(公告)号：US5961291A

公开(公告)日：1999-10-05

申请号：US921475

申请日：1997-09-02

申请人： Seiji Sakagami ,  Masahiro Mase ,  Chiaki Urano ,  Shinji Koyano ,  Yuichi Kinoshita ,  Takashi Nagaoka, deceased

发明人： Seiji Sakagami ,  Masahiro Mase ,  Chiaki Urano ,  Shinji Koyano ,  Yuichi Kinoshita ,  Takashi Nagaoka, deceased

IPC分类号： F04D27/00 ,  F04D19/04 ,  F04D29/70 ,  F04B49/02

CPC分类号： F04D19/048 ,  F04D17/168 ,  F04D23/008 ,  F04D29/70

摘要： A turbo vacuum pump has a rotor and magnetic bearings. The magnetic bearings are held in a housing having a suction port and an exhaust port, and support the rotor rotatably. A peripheral flow pump stage and screw pump stage are formed in the rotor, so that the pressure at the exhaust port can be at or near atmospheric pressure level. Before starting the turbo vacuum pump, the magnetic bearings are operated to displace a rotor position and to scrape off the reaction products which have deposited inside the pump. In addition, before starting the turbo vacuum pump, a stator of the pump is heated up to decrease a binding force of the reaction products. Therefore, the pump can be restarted, even if the rotor has locked by the solidification of deposited reaction products formed during stopping of the pump.

摘要翻译： 涡轮真空泵具有转子和磁性轴承。 磁性轴承保持在具有吸入口和排气口的壳体中，并且可旋转地支撑转子。 在转子中形成有外围流动泵级和螺杆泵级，使得排气口处的压力可处于或接近大气压力水平。 在启动涡轮真空泵之前，操作磁性轴承以移动转子位置并刮掉沉积在泵内的反应产物。 另外，在启动涡轮真空泵之前，泵的定子被加热以降低反应产物的结合力。 因此，即使转子已经通过在泵的停止期间形成的沉积的反应产物的凝固而被锁定，泵也可以重新启动。

公开(公告)号：US5451147A

公开(公告)日：1995-09-19

申请号：US767666

申请日：1991-09-30

申请人： Seiji Sakagami ,  Shinjiro Ueda ,  Masahiro Mase ,  Takashi Nagaoka

发明人： Seiji Sakagami ,  Shinjiro Ueda ,  Masahiro Mase ,  Takashi Nagaoka

IPC分类号： F04D29/056 ,  F04D19/04 ,  F04D29/04 ,  F04D29/057 ,  F04D29/059 ,  F01D1/36

CPC分类号： F04D29/057 ,  F04D17/168 ,  F04D19/04 ,  F04D23/008 ,  F04D29/0513

摘要： A compact, easy-to-handle turbo vacuum pump includes a housing having an inlet port and an outlet port; a cylindrical rotor disposed in the housing and having a stepped peripheral surface and a plurality of blades secured to protruding corners of the steps; and a pumping mechanism portion in which a pumping stage is formed by a stator which faces the blades of the rotor across a narrow gap, and in which peripheral pump flow paths are provided in step-like recessions inside the stator. The turbo vacuum pump further includes a rotating shaft which is connected to the rotor and is rotatably supported by a radial gas bearing and a thrust gas bearing; and a motor portion for operating the rotor. Gas sucked in through the inlet port can be discharged into the atmosphere through the outlet port.

摘要翻译： 紧凑，易于操作的涡轮真空泵包括具有入口和出口的壳体; 设置在所述壳体中并且具有阶梯状周面的圆柱形转子和固定到所述台阶的突出角部的多个叶片; 以及泵送机构部，在该泵机构部分中，通过定子面对泵送级，所述定子面对转子的叶片横跨狭窄的间隙，并且其中在定子内部的阶梯状凹陷中设置有周边泵流路。 所述涡轮真空泵还包括旋转轴，其连接到所述转子并且由径向气体轴承和推进气体轴承可旋转地支撑; 以及用于操作转子的马达部分。 通过入口吸入的气体可以通过出口排出到大气中。

公开(公告)号：US5536148A

公开(公告)日：1996-07-16

申请号：US297017

申请日：1994-08-29

申请人： Akira Nishiuchi ,  Masahiro Mase ,  Noboru Matsumura ,  Katsuaki Kikuchi ,  Takashi Nagaoka ,  Seiji Sakagami

发明人： Akira Nishiuchi ,  Masahiro Mase ,  Noboru Matsumura ,  Katsuaki Kikuchi ,  Takashi Nagaoka ,  Seiji Sakagami

IPC分类号： F04D17/16 ,  F04D19/04 ,  F04D29/58 ,  F04B23/14

CPC分类号： F04D19/046 ,  F04D17/168 ,  F04D23/008 ,  F04D29/582

摘要： A turbo vacuum pump for compressing a low-pressure gas to discharge the compressed gas into atmosphere comprises pump stator having a gas flow passage comprising a plurality of annular flow passages on an inner surface thereof arranged stepwise diameters of which become smaller toward downstream and passages intercommunicating with adjacent annular flow passages and a gas discharge port communicated with one of the plurality of annular flow passages disposed at the most downstream. The pump stator includes a cylindrical spiral grooved pump impeller and a plurality of peripheral flow pump impellers facing the annular flow passages provided downstream of the cylindrical spiral grooved pump impeller and having stepwise diameters which become smaller toward downstream to form a peripheral flow pump stage. The suction casing has a spiral groove on a cylindrical inner surface thereof arranged with a predetermined clearance in relation to the spiral grooved pump impeller of the pump rotor so as to form a spiral grooved pump stage and a gas suction port communicated with the spiral grooved pump stage.

摘要翻译： 用于压缩低压气体以将压缩气体排放到大气中的涡轮真空泵包括具有气体流动通道的泵定子，所述气体流动通道在其内表面上包括多个环形流动通道，所述内部表面的逐步直径向下游变小并且通过相互通信 与相邻的环形流动通道相连接，气体排出口与设置在最下游的多个环形流动通道中的一个连通。 泵定子包括圆柱形螺旋槽泵叶轮和面向环形流动通道的多个周向流动泵叶轮，其设置在圆柱形螺旋槽泵叶轮的下游，并且具有朝向下游变小的逐步直径以形成外围流动泵级。 抽吸壳体在其圆柱形内表面上具有相对于泵转子的螺旋槽泵叶轮设置有预定间隙的螺旋槽，以形成螺旋槽泵台和与螺旋槽泵连通的吸气口 阶段。

公开(公告)号：US5020969A

公开(公告)日：1991-06-04

申请号：US409720

申请日：1989-09-20

申请人： Masahiro Mase ,  Seiji Sakagami ,  Takeshi Okawada ,  Shinjiroo Ueda ,  Yoshihisa Awada ,  Takashi Nagaoka

发明人： Masahiro Mase ,  Seiji Sakagami ,  Takeshi Okawada ,  Shinjiroo Ueda ,  Yoshihisa Awada ,  Takashi Nagaoka

IPC分类号： F04D19/04

CPC分类号： F04D17/168 ,  F04D23/008

摘要： Since a peripheral-flow pump according to the present invention has a peripheral-flow impeller having a cylindrical staircase shape whose outer diameter increases in one direction only like a staircase, a stator, which conventionally has been of a complicated configuration composed of two pieces, can be formed into an integral molding without any deterioration in pump performance. Accordingly, the production of pumps is facilitated.

摘要翻译： 由于根据本发明的外围流量泵具有外圆流动叶轮，其圆筒状的台阶形状的外径仅在阶梯方向上增加一个方向，所以常规地由两部分组成的复杂构造的定子， 可以形成一体成型，而不会使泵性能下降。 因此，促进了泵的生产。

公开(公告)号：US4603480A

公开(公告)日：1986-08-05

申请号：US733760

申请日：1985-05-14

申请人： Seiji Sakagami

发明人： Seiji Sakagami

IPC分类号： G01D5/36 ,  G01B21/02 ,  G01D5/347 ,  G01B11/04

CPC分类号： G01D5/34753

摘要： In a linear scale type displacement measuring instrument including: a case fixed to one of relatively movable members; a main scale; a carriage; index scales and a detector; the carriage and the other of the relatively movable members are connected to each other through a connecting mechanism, one end of which is connected to the carriage, the other end of which is connected to the other of the relatively movable members in a location where a section standard length of the main scale is maintained as it is when the main scale is straight, i.e. within the neutral planes of the case as a whole including the main scale mounted, and capable of permitting the carriage to change the posture thereof such that the index scales can be held in a state of perpendicularly intersecting the normal line of the surface of a warp of the main scale.

摘要翻译： 一种线性刻度型位移测量仪器，包括：固定在相对移动部件之一上的壳体; 主要规模; 一个马车 指标和检测器; 托架和另一个可相对移动的构件通过连接机构彼此连接，该连接机构的一端连接到滑架，其另一端连接到另一个相对可移动的构件， 主刻度的截面标准长度保持原样，主刻度是直的，即在包括主刻度安装在内的整个壳体的中性平面内，并且能够允许滑架改变其姿势，使得 索引刻度可以保持在与主刻度的翘曲的表面的法线垂直相交的状态。

公开(公告)号：US4376543A

公开(公告)日：1983-03-15

申请号：US268402

申请日：1981-05-29

申请人： Seiji Sakagami

发明人： Seiji Sakagami

IPC分类号： G01B7/00 ,  G01B21/02 ,  G01D5/347 ,  G05G25/04 ,  F16J15/16

CPC分类号： G05G25/04 ,  G01D5/34769

摘要： A dust excluding device for a linear scale type measuring instrument which comprises; flexible shield members disposed at opposite sides of an opening formed in a hollow casing along a line of movement of a movable member and having the forward ends thereof being brought into abutting contact with each other; and a neck adapted to locally push open the abutting contact portions of the shield members, for imparting a displacement of the movable member at the outside of said hollow casing to the interior of said hollow casing through said opening; characterized in that the end portions of said neck in the moving directions thereof are each formed into a letter `V` shape, the tip of which obliquely recedes from inside to outside of said hollow casing.

摘要翻译： 一种线性刻度型测量仪的除尘装置，包括： 柔性屏蔽构件，其设置在沿着可动构件的移动线形成在中空壳体中的开口的相对侧，并且其前端彼此抵接; 以及颈部，其适于局部地推开所述屏蔽构件的所述抵接接触部分，以通过所述开口将所述中空壳体的外部的所述可动构件移动到所述中空壳体的内部; 其特征在于，所述颈部在其移动方向上的端部各自形成为字母“V”形，其尖端从所述中空壳体的内部向外倾斜地退缩。

公开(公告)号：US07225555B2

公开(公告)日：2007-06-05

申请号：US11179663

申请日：2005-07-13

申请人： Hiroaki Kawada ,  Seiji Sakagami ,  Hiroatsu Mori

发明人： Hiroaki Kawada ,  Seiji Sakagami ,  Hiroatsu Mori

IPC分类号： A45B3/08

CPC分类号： G01D5/34707 ,  G01B3/004

摘要： A linear scale attachment device for holding and securely attaching a linear scale on an object to be measured is disclosed. The device includes an aluminum base formed with a holding groove having a larger opening than the width of a linear scale that is fitted in this groove, and a retainer for preventing the linear scale fitted in the holding groove from falling off. The base is permanently attached to the object at one location in the lengthwise direction, and resiliently attached at one or more other locations such as to be pressed in the X and Y directions using a cantilever plate spring. While using an aluminum base, the attachment device allows easy attachment and maintenance of the scale and relieves the effect of thermal stress caused by a difference in the thermal expansion coefficient between the aluminum base and the object.

摘要翻译： 公开了一种用于将线性刻度保持并牢固地附着在被测量物体上的线性刻度附着装置。 该装置包括形成有具有比安装在该槽中的线性标尺的宽度大的开口的保持槽的铝基座和用于防止装配在保持槽中的线性标尺脱落的保持器。 基座在长度方向的一个位置处永久地附接到物体，并且在一个或多个其它位置处弹性地附接，以便使用悬臂板簧在X和Y方向上被按压。 在使用铝基座的情况下，附接装置能够容易地附着和维持标尺，并且减轻由铝基体和物体之间的热膨胀系数的差异引起的热应力的影响。

公开(公告)号：US06635863B1

公开(公告)日：2003-10-21

申请号：US09626923

申请日：2000-07-27

申请人： Shingo Nihommori ,  Seiji Sakagami ,  Toru Yaku

发明人： Shingo Nihommori ,  Seiji Sakagami ,  Toru Yaku

IPC分类号： G01D534

CPC分类号： G01D5/34715

摘要： An optical encoder comprises a main scale (1) having scale gratings (11) formed thereon with a certain angular pitch along a measurement axis (x1) that describes a circular arc. It also comprises a detection bead (2) having photoreceptive optical gratings (7) formed thereon. The detection head is arranged relatively movable along the measurement axis (x1), opposing to the main scale (1). The photoreceptive optical gratings (7) on the detection head (2) have transparent and opaque portions alternately arranged with a certain distance pitch along a straight, grating arrangement axis (x2).

摘要翻译： 光学编码器包括主刻度尺（1），其上形成有沿着描述圆弧的测量轴线（x1）以一定角度间距形成的刻度光栅（11）。 它还包括在其上形成有感光光栅（7）的检测珠（2）。 检测头沿着与主秤（1）相对的测量轴（x1）相对移动。 检测头（2）上的感光光栅（7）具有透明和不透明部分，沿着直的光栅排列轴线（x2）以一定距离间距交替布置。

公开(公告)号：US4985623A

公开(公告)日：1991-01-15

申请号：US490389

申请日：1990-03-08

申请人： Souji Ichikawa ,  Hideki Oka ,  Naoyoshi Terao ,  Seiji Sakagami

发明人： Souji Ichikawa ,  Hideki Oka ,  Naoyoshi Terao ,  Seiji Sakagami

IPC分类号： G01D5/36

CPC分类号： G01D5/36

摘要： In an optical encoder using a collimated lighting system, an index scale is inclined toward a main scale by a predetermined value. With this arrangement, a component of variation in the detection signal due to variations in the grating gap can be offset or integrated to be removed from a geometric image of the first grating in the detection signal, whereby the dependence of an S/N ratio of the detection signal on the grating gap can be avoided.

公开(公告)号：US20060016089A1

公开(公告)日：2006-01-26

申请号：US11179663

申请日：2005-07-13

申请人： Hiroaki Kawada ,  Seiji Sakagami ,  Hiroatsu Mori

发明人： Hiroaki Kawada ,  Seiji Sakagami ,  Hiroatsu Mori

IPC分类号： B26D7/28

CPC分类号： G01D5/34707 ,  G01B3/004

摘要： A linear scale attachment device for holding and securely attaching a linear scale on an object to be measured is disclosed. The device includes an aluminum base formed with a holding groove having a larger opening than the width of a linear scale that is fitted in this groove, and a retainer for preventing the linear scale fitted in the holding groove from falling off. The base is permanently attached to the object at one location in the lengthwise direction, and resiliently attached at one or more other locations such as to be pressed in the X and Y directions using a cantilever plate spring. While using an aluminum base, the attachment device allows easy attachment and maintenance of the scale and relieves the effect of thermal stress caused by a difference in the thermal expansion coefficient between the aluminum base and the object.

摘要翻译： 公开了一种用于将线性刻度保持并牢固地附着在被测量物体上的线性刻度附着装置。 该装置包括形成有具有比安装在该槽中的线性标尺的宽度大的开口的保持槽的铝基座和用于防止装配在保持槽中的线性标尺脱落的保持器。 基座在长度方向的一个位置处永久地附接到物体，并且在一个或多个其它位置处弹性地附接，以便使用悬臂板簧在X和Y方向上被按压。 在使用铝基座的情况下，附接装置能够容易地附着和维持标尺，并且减轻由铝基体和物体之间的热膨胀系数的差异引起的热应力的影响。