公开(公告)号：US09659695B2

公开(公告)日：2017-05-23

申请号：US15216900

申请日：2016-07-22

Applicant: SHIN-ETSU CHEMICAL CO., LTD.

Inventor： Takanobu Inoue ,  Dai Higuchi

IPC: H01F7/02 ,  G01R33/383

CPC classification number: H01F7/021 ,  G01R33/383 ,  H01F7/0221 ,  H01F7/0268 ,  H01F7/0273 ,  H01F7/0278

Abstract: Provided is a dipole ring magnetic field generator capable of generating a substantially unidirectional magnetic field in the internal space of a ring without using permanent magnet pieces having fan-shaped or trapezoidal sections, and as a result, a smaller skew angle therein is achieved. The sections of the permanent magnet pieces are shaped to be rectangular, and a plurality of the rectangular permanent magnet pieces are circularly placed at predetermined positions. Each of first, second, third and fourth permanent magnet units, which are main permanent magnet units, comprises five or more permanent magnet pieces. The first and third permanent magnet units, as well as the second and fourth permanent magnet units, are positioned oppositely from each other with respect to a central axis of the magnetic field generator and have hollow shapes or E-shapes facing against each other in a section perpendicular to the central axis.

公开(公告)号：US07618496B2

公开(公告)日：2009-11-17

申请号：US11229660

申请日：2005-09-20

Applicant: Koji Sato ,  Mitsuo Kawabata ,  Takehisa Minowa

Inventor： Koji Sato ,  Mitsuo Kawabata ,  Takehisa Minowa

IPC: H01F1/32 ,  H01F1/057

CPC classification number: H01F7/0268 ,  H01F41/0266 ,  H01F41/028

Abstract: A radial anisotropic sintered magnet formed into a cylindrical shape includes a portion oriented in directions tilted at an angle of 30° or more from radial directions, the portion being contained in the magnet at a volume ratio in a range of 2% or more and 50% or less, and a portion oriented in radial directions or in directions tilted at an angle less than 30° from radial directions, the portion being the rest of the total volume of the magnet. The radial anisotropic sintered magnet has excellent magnet characteristics without occurrence of cracks in the steps of sintering and cooling for aging, even if the magnet has a shape of a small ratio between an inner diameter and an outer diameter.

Abstract translation: 形成为圆筒状的径向各向异性烧结磁体包括从径向倾斜30°以上的方向取向的部分，磁体中的部分以2％以上的体积比容纳在50％以上 ％以下的部分，以及沿径向方向或以与径向小于30°的角度倾斜的方向的部分，该部分是磁体总体积的其余部分。 径向各向异性烧结磁体即使磁体具有内径和外径之间的小比例的形状，也具有优异的磁体特性，而不会在老化烧结和冷却步骤中产生裂纹。

公开(公告)号：US20050084297A1

公开(公告)日：2005-04-21

申请号：US10979394

申请日：2004-11-02

Applicant: Michael Dixon ,  Robert Hackett ,  Joe McGuire

Inventor： Michael Dixon ,  Robert Hackett ,  Joe McGuire

IPC: G03G15/08 ,  F16C13/00 ,  G03G15/09 ,  H01F7/02

CPC classification number: H01F7/0268 ,  G03G15/0921

Abstract: A magnetic roller for electrophotography comprises a foamed resin magnetic material. A method of producing a magnetic roller comprises the steps of providing magnetic filler, a resin binder and a foaming agent in a closed mold; activating the foaming agent in the closed mold; and removing the resulting formed roller from the mold.

公开(公告)号：US06861935B1

公开(公告)日：2005-03-01

申请号：US10914786

申请日：2004-08-04

Applicant: Herbert A. Leupold

Inventor： Herbert A. Leupold

IPC: H01F7/02

CPC classification number: H01F7/0268 ,  H01F7/0278

Abstract: A permanent magnet comprises a shell surrounding a cavity. The shell has a magnetic remanence Br(θ) configured such that a magnetic field taper extends through the cavity and wherein the shell includes a non-distortive access region that is substantially magnetic field.

Abstract translation: 永磁体包括围绕空腔的外壳。 壳体具有磁性剩余Br（θ），其被配置为使得磁场锥度延伸穿过空腔，并且其中壳体包括基本上为磁场的非变形访问区域。

公开(公告)号：US06703915B1

公开(公告)日：2004-03-09

申请号：US10169626

申请日：2002-07-02

Applicant: Masaharu Iwai

Inventor： Masaharu Iwai

IPC: H01F702

CPC classification number: B82Y25/00 ,  H01F1/0579 ,  H01F7/0268

Abstract: To provide a magnet roller having a high magnetic force at low cost even if magnetized in a relatively weak magnetic field, having a magnetic force (800 G or higher) sufficient for development even if a plurality of magnetic poles are provided in a main magnetic pole part, and having good resistance to oxidation. The magnet roller (1) of the present invention includes a body part (3) and a shaft part (2) supporting both ends of (3). A plurality of magnetic poles are provided in a magnetized manner in an outer peripheral face of (3), made up of a rare-earth bond magnet made of rare-earth magnetic powder having a composite phase of a hard magnetic phase and a soft magnetic phase both magnetically exchange-interacting with each other and having a coercive force (iHc) of 5 KOe or lower and a residual magnetic flux density (Br) of 5 KG or higher.

Abstract translation: 即使在比较弱的磁场中磁化的情况下也能以低成本提供具有高磁力的磁力辊，具有足以显影的磁力（800G以上），即使在主磁极中设置多个磁极 部分，并且具有良好的耐氧化性。 本发明的磁性辊（1）包括主体部（3）和支撑（3）的两端的轴部（2）。 在由（3）的外周面以磁化方式设置的多个磁极由具有硬磁相和软磁性复合相的稀土类磁粉制成的稀土类磁铁构成 相位彼此磁交换相互作用并具有5KOe以下的矫顽力（iHc）和5KG以上的残留磁通密度（Br）。

公开(公告)号：US06454686B1

公开(公告)日：2002-09-24

申请号：US09845102

申请日：2001-04-30

Applicant: David A. McEachern

Inventor： David A. McEachern

IPC: B23P1500

CPC classification number: H01F7/0268 ,  B26D7/2614 ,  B26D2007/2607 ,  B41F27/02

Abstract: A magnetic cylinder for holding printing plates, embossing plates, die-cutting plates or the like has a plurality of pockets or recesses formed on its outer surface, each of the pockets or recesses containing magnetic elements of permanent bar magnets and interposed pole pieces with the pockets offset circumferentially from one another so that the magnetic holding field will armature with the plate placed on the cylinder at least in part over the entire width and length or breadth of the plate to ensure that the entire plate including the leading and trailing edges are held securely in place while the cylinder rotates.

Abstract translation: 用于保持印版，压印板，模切板等的磁性圆筒具有在其外表面上形成的多个凹穴或凹槽，每个凹槽或凹槽包含永久磁棒磁体的磁性元件和插入的极片 凹口彼此周向偏移，使得磁保持场将与放置在圆柱体上的板衔接至少部分地在板的整个宽度和长度或宽度上，以确保包括前缘和后缘的整个板被保持 在气缸旋转的同时牢固就位。

公开(公告)号：USRE37834E1

公开(公告)日：2002-09-10

申请号：US09014032

申请日：1998-01-27

Applicant: Keitaro Yamashita

Inventor： Keitaro Yamashita

IPC: H01F700

CPC classification number: G03G15/0921 ,  B03C1/12 ,  H01F7/0268

Abstract: The magnet roll according to the present invention comprising a cylindrical resin-bonded magnet, a first shaft formed by injection molding integrally with the cylindrical resin-bonded magnet at one end thereof, and a second shaft press-fitted into a bore of the cylindrical resin-bonded magnet at the opposite end thereof. A magnetic roll comprises a cylindrical resin-bonded magnet made primarily of a ferromagnetic powder and a thermoplastic resin having a modulus of longitudinal elasticity of at least 2×104 kg/cm2, a first shaft formed by injection molding integrally with the cylindrical resin-bonded magnet at one end thereof, and a second shaft made of a rigid conductive material and press-fitted into a bore of the cylindrical resin-bonded magnet at the opposite end thereof. The bore has a splined cross section, the second shaft provided with a base portion having a splined cross section complimentary to that of the bore, and the base portion is inserted into the bore. The ferromagnetic powder is made of at least one selected from the group consisting of barium ferrite, strontium ferrite, a rare earth-cobalt alloy and a rare earth-iron-boron alloy, and the thermoplastic resin is at least one selected from the group consisting of nylon-6, nylon-12 and nylon-66.

Abstract translation: 根据本发明的磁辊包括圆柱形树脂粘结磁体，通过与圆柱形树脂粘合磁体一体注射成型形成的第一轴 在其一端具有磁体，第二轴压在与其相对端的圆柱形树脂粘结磁体的孔中。 磁辊包括主要由铁磁粉末和纵向弹性模量为至少2x104kg / cm 2的热塑性树脂制成的圆柱形树脂粘结磁体，第一 其一端与圆柱形树脂粘结磁体一体注射形成的轴，以及由刚性导电材料制成的第二轴，并在其相对端压配合到圆柱形树脂粘结磁体的孔中。 孔具有花键横截面，第二轴设置有具有与孔的横截面互补的花键横截面的基部，并且基部插入孔中。 铁磁粉末由选自钡铁氧体，铁酸锶，稀土 - 钴合金和稀土 - 铁 - 硼合金中的至少一种制成，热塑性树脂是选自以下的至少一种： 尼龙-6，尼龙-12和尼龙-66。

公开(公告)号：US20020084001A1

公开(公告)日：2002-07-04

申请号：US09732744

申请日：2000-12-11

Inventor： Katsunori Iwasaki ,  Masahiro Tobise ,  Yasunobu Ogata ,  Mikio Shindo ,  Hiroshi Okajima

IPC: H01F001/03 ,  H01F001/04 ,  H01F001/14 ,  H01F001/16 ,  H01F001/18

CPC classification number: H01F7/0268 ,  H01F1/059 ,  H01F1/09

Abstract: A resin-bonded magnet composed substantially of (a) an R-T-N-based magnetic powder having a basic composition of RnullT100-null-nullNnull, wherein R is at least one selected form the group consisting of rare earth elements including Y, T is Fe or Fe and Co, 5nullnullnull20, and 5nullnullnull30, (b) a ferrite magnetic powder having a substantially magnetoplumbite-type crystal structure and a basic composition represented by (A1-xRnullx)Onull(Fe1-yMy)2O3null by atomic ratio, wherein A is Sr and/or Ba, Rnull is at least one selected from the group consisting of rare earth elements including Y, La being indispensable, M is Co or Co and Zn, 0.01nullxnull0.4, 0.005nullynull0.04, and 5.0nullnnull6.4, and (c) a binder. The ferrite magnet powder is preferably an anisotropic, granulated powder or an anisotropic, sintered ferrite magnet powder.

Abstract translation: 基本上由以下组成的树脂粘结磁体：（a）具有RalphaT100-α-βNbeta的碱性组成的RTN系磁性粉末，其中R为选自由Y，T组成的稀土元素组成的组中的至少一种，为Fe或 Fe和Co，5 <=α<= 20，5 <=β<= 30，（b）具有大体上磁铅石型晶体结构和由（A1-xR'x）O表示的基本组成的铁氧体磁粉 w =“20”he =“20”id =“custom-character-00001”/> [（Fe1-yMy）2O3]原子比

公开(公告)号：US5488341A

公开(公告)日：1996-01-30

申请号：US254877

申请日：1994-06-06

Applicant: Mikio Yamamoto ,  Keitaro Yamashita ,  Katsunobu Kiriyama

Inventor： Mikio Yamamoto ,  Keitaro Yamashita ,  Katsunobu Kiriyama

IPC: B03C1/12 ,  G03G15/09 ,  G03G21/00 ,  H01F7/02 ,  H01F41/02 ,  H01F3/00

CPC classification number: H01F41/028 ,  B03C1/12 ,  G03G15/0921 ,  G03G21/0047 ,  H01F7/0268 ,  Y10T29/49549 ,  Y10T29/49565

Abstract: A permanent magnet member composed of an integral sintered body made of a ferrite magnet material, the integral sintered body including a cylindrical center portion and shaft portions formed at the opposite ends of the cylindrical center portion and each having a smaller diameter than that of the cylindrical center portion, the cylindrical center portion being provided with a plurality of magnetic poles extending axially and arranged circumferentially on an outer surface of the cylindrical center portion.

Abstract translation: 一种由铁氧体磁铁材料制成的整体式烧结体构成的永磁体构件，该整体式烧结体包括圆筒形中心部分和形成在圆柱形中心部分两端的轴部分，其直径小于圆柱形中心部分的直径 中心部分，圆柱形中心部分设置有多个沿轴向延伸并且周向设置在圆柱形中心部分的外表面上的磁极。

公开(公告)号：US5477591A

公开(公告)日：1995-12-26

申请号：US344326

申请日：1994-11-23

Applicant: Ricardo Morell

Inventor： Ricardo Morell

IPC: D01H5/00 ,  D01H5/54 ,  D01H5/56 ,  D01H5/72 ,  H01F7/02 ,  F16C23/00

CPC classification number: D01H5/00 ,  D01H5/54 ,  D01H5/72 ,  H01F7/0268

Abstract: A bearing device for use in textile drafting roller pairs for supporting the top roller of a drafting roller pair. The bearing device finds particular use with magnetic drafting rollers, but can be used with other types of roller configurations. The bearing device allows for the top roller to be selectively positioned with respect to the bottom roller in order to allow removal of the top roller and to prevent deformation of cots or aprons provided thereon during machine stoppage. A rotating debris excluding interface is also provided through interaction of the bearing device and the end of a roller. Handles are attached to the bearing device for allowing extraction of the top roller from a roller pair, and ribs may be provided on the bearing device or receptacle therefor to facilitate piecing up of a broken yarn. Related methods of use of the bearing device are also disclosed.

Abstract translation: 用于纺织牵伸辊对中用于支撑牵伸辊对的顶辊的轴承装置。 轴承装置特别适用于磁性牵伸辊，但可与其他类型的滚筒配置一起使用。 轴承装置允许顶辊相对于底辊选择性地定位，以便允许去除顶辊，并防止在机器停止期间设置在其上的婴儿床或围裙的变形。 还通过轴承装置和辊的端部的相互作用来提供不包括界面的旋转碎片。 手柄连接到轴承装置上，用于允许从辊对提取顶辊，并且可以在轴承装置或插座上设置肋，以便于断裂的纱线的接合。 还公开了使用轴承装置的相关方法。