公开(公告)号：US5154592A

公开(公告)日：1992-10-13

申请号：US598413

申请日：1990-10-18

申请人： Iwao Ohtani ,  Takayuki Ando ,  Yoshifumi Fukuhara

发明人： Iwao Ohtani ,  Takayuki Ando ,  Yoshifumi Fukuhara

IPC分类号： F04C25/02 ,  F01C17/06 ,  F04C18/02

CPC分类号： F01C17/06 ,  F01C17/063 ,  F04C18/0215

摘要： A scroll type fluid apparatus, such as a scroll vacuum pump or a scroll compressor, does not require lubrication by an external lubricating device. The scroll type fluid apparatus includes a casing, a stationary scroll member fixed to the casing, an orbiting scroll member cooperating with the stationary scroll member to form sealed chambers therebetween, and a restraining mechanism for restraining the orbiting scroll member from rotating about its own axis. The restraining mechanism employs prelubricated sealed bearings which support its component parts so that the component parts are in rolling contact with the corresponding portions of the orbiting scroll member, so that the component parts and the corresponding portions of the orbiting scroll member are not radially abraded, and portions of the scroll type fluid apparatus exposed to the fluid need not be lubricated by an external lubricating device.

摘要翻译： 诸如涡卷真空泵或涡旋压缩机之类的涡旋式流体装置不需要外部润滑装置的润滑。 涡旋式流体装置包括壳体，固定在壳体上的固定涡旋件，与固定涡旋件配合以在其间形成密封室的动涡旋件，以及用于限制绕动涡旋件围绕其自身轴线旋转的约束机构 。 限制机构采用预润滑密封轴承，其支撑其组成部件，使得部件与绕动涡旋件的相应部分滚动接触，使得绕动涡旋件的部件和对应部分不被径向磨损， 暴露于流体的涡旋型流体设备的部分不需要被外部润滑装置润滑。

公开(公告)号：US4662826A

公开(公告)日：1987-05-05

申请号：US724284

申请日：1985-04-17

申请人： Michio Nitta ,  Hiroyuki Suzuki ,  Yoshifumi Fukuhara

发明人： Michio Nitta ,  Hiroyuki Suzuki ,  Yoshifumi Fukuhara

IPC分类号： F04B37/10 ,  F04B41/06 ,  F04C23/00 ,  F04C28/26 ,  F04C29/00 ,  F04B23/10

CPC分类号： F04C28/26 ,  F04B37/10 ,  F04B41/06 ,  F04C23/005 ,  F04C29/005

摘要： A vacuum pump includes a rotary vacuum pump including a pair of rotors cooperating to suck gas, a driving source connected to a shaft of one of the pair of rotors, timing gears connected to respective shafts of the rotors and transmitting the driving force of the driving source between the shafts of the pair rotors, and a reciprocating vacuum pump connected to the driving source and connected to the downstream side of the rotary vacuum pump for sucking gas therefrom.

摘要翻译： 真空泵包括旋转式真空泵，其包括一对与吸气相配合的转子，连接到一对转子之一的轴的驱动源，连接到转子的相应轴的正时齿轮，并传递驱动力的驱动力 并且连接到驱动源的往复式真空泵连接到旋转式真空泵的下游侧，用于从其中吸入气体。

公开(公告)号：US5648014A

公开(公告)日：1997-07-15

申请号：US569764

申请日：1995-12-08

申请人： Mitsuaki Hatatani ,  Osamu Okimoto ,  Toshitada Shigemura ,  Yoshifumi Fukuhara ,  Hideaki Sadamura

发明人： Mitsuaki Hatatani ,  Osamu Okimoto ,  Toshitada Shigemura ,  Yoshifumi Fukuhara ,  Hideaki Sadamura

IPC分类号： C01G49/08 ,  C01G49/00 ,  G11B5/706 ,  H01F1/11 ,  H01F1/36 ,  C09C1/22

CPC分类号： H01F1/112 ,  G11B5/70647 ,  G11B5/70689 ,  Y10T428/2991

摘要： Acicular magnetic iron oxide particles comprise:acicular magnetite particles having 10 to 24% by weight of ferrous as core particles;a magnetite coating which is formed on the surfaces of said acicular magnetite particles by epitaxial growth and which has maghemite at least in a part of the surface of said magnetite coating; anda cobalt-containing oxide layer which is formed on said magnetite coating and which contains cobalt of 1.5 to 2.5 wt % based on the total weight of said acicular magnetic iron oxide particles.

摘要翻译： 针状磁性氧化铁颗粒包括：具有10至24重量％的作为核心颗粒的亚铁的针状磁铁矿颗粒; 磁铁矿涂层，其通过外延生长形成在所述针状磁铁矿颗粒的表面上，并且至少在所述磁铁矿涂层的表面的一部分中具有磁赤铁矿; 以及形成在所述磁铁矿涂层上并含有基于所述针状磁性氧化铁颗粒的总重量为1.5至2.5重量％的钴的含钴氧化物层。