公开(公告)号：US06850140B1

公开(公告)日：2005-02-01

申请号：US10658895

申请日：2003-09-10

Applicant: Stephen Craig Gleckner

Inventor： Stephen Craig Gleckner

IPC: G03G15/09 ,  H01F7/02

CPC classification number: H01F7/0268 ,  G03G15/0921 ,  G03G2215/0634

Abstract: The present invention is directed to layered magnets, magnetic rolls made therefrom, methods for increasing the magnetic field strength of a ferritic magnet, methods for increasing the magnetic field strength of a magnetic roll, methods for increasing the magnetic field uniformity of a rare earth magnet, and methods for increasing the magnetic field uniformity of a magnetic roll. Layered magnets include a rare earth magnet having a magnetic field, and superposed upon the rare earth magnet, a layer of ferritic magnet bonded thereto. Layered magnets exhibit greater magnetic field strength and a substantially more uniform magnetic field.

Abstract translation: 本发明涉及分层磁铁，由其制成的磁辊，提高铁素体磁体的磁场强度的方法，提高磁辊的磁场强度的方法，提高稀土磁体的磁场均匀性的方法 以及提高磁辊的磁场均匀性的方法。 层状磁体包括具有磁场的稀土磁体，并且重叠在稀土磁体上，与其结合的铁素体磁体层。 层状磁体表现出更大的磁场强度和更均匀的磁场。

公开(公告)号：US06836958B2

公开(公告)日：2005-01-04

申请号：US10247608

申请日：2002-09-18

Applicant: Yong Lee ,  Joseph Lee

Inventor： Yong Lee ,  Joseph Lee

IPC: H01F7/02 ,  H01F7/06 ,  H01F1/03

CPC classification number: H01F7/0268 ,  H01F7/0273 ,  Y10T29/49076

Abstract: A Neodymium-Iron-Boron permanent magnet which is substantially wider across a first axis than across the perpendicular second axis. The second axis is the axis defining the north and south poles of the magnet. At one of the poles is a permalloy cap which is substantially parallel to the first axis and inhibits the extension of magnetic flux from that pole and encourages instead a deep extension of the magnetic flux from the other pole. An aperture penetrates the magnet through the second axis which is wider at the pole away from the permalloy cap than it is at the pole adjacent to the permalloy cap. The shape of this aperture causes a distortion of the deeply extending magnetic flux lines at the pole away from the permalloy cap to be pinched inward toward the second axis rather than being parallel to it. The magnet thus provides a concentrated magnetic force that extends deeply out of its base so that the magnet can be placed on the exterior of a vessel or conduit with the result that the fluid inside is treated with optimized magnetic force.

公开(公告)号：US06749787B2

公开(公告)日：2004-06-15

申请号：US09794131

申请日：2001-02-28

Applicant: Paul F. Mastro ,  Christopher D. Blair ,  Jennifer R. Wagner ,  Jay Schneider

Inventor： Paul F. Mastro ,  Christopher D. Blair ,  Jennifer R. Wagner ,  Jay Schneider

IPC: B29C3338

CPC classification number: H01F7/0268 ,  B29C33/56 ,  B29C45/37 ,  H01F41/0266

Abstract: A mold used to form a magnetic member includes a mold body having a mold opening, a mold support that supports the mold cavity, and a mold insert. The mold insert is disposed in the mold opening of the mold body to form a mold cavity. The mold insert is coated with a coating to protect the mold body from chemical attack and abrasive wear of the mold material. The coating comprises an electroless nickel layer formed on or over the mold insert, and a chromium nitride layer formed on or over the electroless nickel layer. The mold insert can be formed of beryllium-copper (Be—Cu).

公开(公告)号：US20030160674A1

公开(公告)日：2003-08-28

申请号：US10372342

申请日：2003-02-25

Inventor： Matahiro Komuro ,  Masashi Kitamura ,  Motoya Itou ,  Yoshihiko Kuriyama

IPC: H01F007/02

CPC classification number: H02K1/2733 ,  H01F7/0268 ,  H01F7/0278 ,  H01F13/003 ,  H01F41/028 ,  H02K15/03

Abstract: The present invention provides a ring magnet made of hard magnetic material having a ring shape, which has an orientation ratio of 50% by volume or more of easy magnetization axis in the radial direction at the pole center position. The present invention also provides a method of manufacturing a ring magnet comprising a step of orientating magnetic powder of hard magnetic material, which comprises molding the magnetic powder filled in a ring shaped mold under a pressure in an axial direction of the ring, and applying magnetic field to the ring shaped mold with a magnetic field generating means disposed to the periphery of the mold.

Abstract translation: 本发明提供一种环形磁铁制成的环形磁铁，其具有环状，其磁极中心位置的径向易磁化轴的取向比为50体积％以上。 本发明还提供一种制造环形磁铁的方法，该方法包括对硬磁性材料的磁性粉末进行定向的步骤，该方法包括在环形轴向压力下将填充在环形模具中的磁性粉末成型，并施加磁性 到具有设置在模具的周边的磁场产生装置的环形模具。

公开(公告)号：US20030110632A1

公开(公告)日：2003-06-19

申请号：US10168204

申请日：2002-10-03

Inventor： Atsushi Iwase

IPC: B23K026/00 ,  B21D053/00

CPC classification number: G03G15/0928 ,  G03G2215/0863 ,  H01F7/0268 ,  Y10T29/49563 ,  Y10T29/49995

Abstract: A magnet roller includes a rotary sleeve having a given systematic pattern on the outer surface of the sleeve and a magnet provided in the sleeve. This structure transfers toner uniformly along the outer surface of the sleeve. A printer, for instance, employing this magnet roller can print a fine copy.

Abstract translation: 磁辊包括在套筒的外表面上具有给定的系统图案的旋转套筒和设置在套筒中的磁体。 该结构沿着套筒的外表面均匀地转移调色剂。 例如，使用该磁辊的打印机可以打印精美的副本。

公开(公告)号：US20030076206A1

公开(公告)日：2003-04-24

申请号：US10247608

申请日：2002-09-18

Inventor： Yong Lee ,  Joseph Lee

IPC: H01F007/02

CPC classification number: H01F7/0268 ,  H01F7/0273 ,  Y10T29/49076

Abstract: A Neodymium-Iron-Boron permanent magnet which is substantially wider across a first axis than across the perpendicular second axis. The second axis is the axis defining the north and south poles of the magnet. At one of the poles is a permalloy cap which is substantially parallel to the first axis and inhibits the extension of magnetic flux from that pole and encourages instead a deep extension of the magnetic flux from the other pole. An aperture penetrates the magnet through the second axis which is wider at the pole away from the permalloy cap than it is at the pole adjacent to the permalloy cap. The shape of this aperture causes a distortion of the deeply extending magnetic flux lines at the pole away from the permalloy cap to be pinched inward toward the second axis rather than being parallel to it. The magnet thus provides a concentrated magnetic force that extends deeply out of its base so that the magnet can be placed on the exterior of a vessel or conduit with the result that the fluid inside is treated with optimized magnetic force.

Abstract translation: 钕铁硼永磁体，其在第一轴线上比横过垂直第二轴线基本上更宽。 第二轴是定义磁体的北极和南极的轴线。 其中一个极点是坡莫合金盖，其基本上平行于第一轴线并且阻止来自该极的磁通量的延伸，并且鼓励来自另一个极的磁通的深度延伸。 光圈穿过第二轴线，该第二轴线远离坡莫合金盖杆的距离比在坡莫合金盖板附近的极板处更宽。 该孔的形状导致远离坡莫合金盖的极的深度延伸的磁通线的变形被向内朝向第二轴线夹紧，而不是平行于其。 因此，磁体提供了从其底部深深延伸的集中磁力，使得磁体可以放置在容器或管道的外部，结果是内部的流体被优化的磁力处理。

公开(公告)号：US06396378B1

公开(公告)日：2002-05-28

申请号：US09956740

申请日：2001-09-17

Applicant: Herbert A. Leupold

Inventor： Herbert A. Leupold

IPC: H01F702

CPC classification number: H01J23/087 ,  H01F7/0268

Abstract: A variable tapered magic cylinder structure that is constructed from two or more permanent magnet shells, with the first shell being oriented and magnetized to produce a first working magnetic field with a given taper, and a second shell oriented and magnetized to produce a second magnetic field with a given taper that interacts with the first magnetic field. The two magnetic shells are assembled in a way to rotate about a common shared internal cavity and concentric cylindrical axis to form a working space, with the first and second working fields interacting with each other to form a tapered working magnetic field along a polar plane perpendicular to the concentric axis with a given pitch. This structure allows one to adjust or vary the tapered magnetic field along the polar plane to advantageously provide an adjustable composite tapered magnetic field. Also provided are a variable tapered magic cylinder device, a method for adjusting a tapered magnetic field and a method of adjusting a tapered magnetic field in a magic ring structure.

Abstract translation: 一种由两个或更多个永磁体壳体构成的可变锥形魔术圆筒结构，其中第一壳体定向和磁化以产生具有给定锥度的第一工作磁场，以及定向和磁化的第二壳体以产生第二磁场 具有与第一磁场相互作用的给定锥度。 两个磁性壳体以围绕公共共同内部空腔和同心圆柱形轴线旋转的方式组装以形成工作空间，其中第一和第二工作区域彼此相互作用以沿垂直极性平面形成锥形工作磁场 以给定的间距向同心轴。 这种结构允许调整或改变沿着极平面的锥形磁场，以有利地提供可调节的复合锥形磁场。 还提供了一种可变锥形魔术缸装置，一种用于调节锥形磁场的方法和一种调整魔术环结构中的锥形磁场的方法。

公开(公告)号：US06383407B2

公开(公告)日：2002-05-07

申请号：US09784046

申请日：2001-02-16

Applicant: Yasunobu Ogata ,  Yutaka Kubota ,  Takashi Takami ,  Shuichi Shiina

Inventor： Yasunobu Ogata ,  Yutaka Kubota ,  Takashi Takami ,  Shuichi Shiina

IPC: C04B3540

CPC classification number: C01G49/0054 ,  C01G49/0063 ,  C01G49/0072 ,  C01G51/006 ,  C01G53/006 ,  C01P2002/52 ,  C01P2004/45 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/10 ,  C01P2006/42 ,  C04B35/2633 ,  C04B35/2683 ,  C04B35/6261 ,  C04B35/6262 ,  C04B35/62625 ,  C04B35/6263 ,  C04B35/63 ,  C04B2235/3213 ,  C04B2235/3224 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3232 ,  C04B2235/3239 ,  C04B2235/3262 ,  C04B2235/3274 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/3281 ,  C04B2235/3284 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/6022 ,  C04B2235/72 ,  C04B2235/724 ,  C04B2235/726 ,  C04B2235/727 ,  C04B2235/767 ,  H01F1/11 ,  H01F1/113 ,  H01F7/0268 ,  H01F41/0273

Abstract: A ferrite powder for bonded magnets having a substantially magnetoplumbite-type crystal structure and an average diameter of 0.9-2 &mgr;m, the ferrite powder having a basic composition represented by the following general formula: (A1−xRx)O.n[(Fe1−yMy)2O3] by atomic ratio, wherein A is Sr and/or Ba; R is at least one of rare earth elements including Y, La being indispensable; M is at least one element selected from the group consisting of Co, Mn, Ni and Zn; and x, y and n are numbers meeting the conditions of 0.01≦x≦0.4, [x/(2.6n)]≦y≦[x/(1.6n)], and 5≦n≦6, (Si+Ca) being 0.2 weight % or less, and (Al+Cr) being 0.13 weight % or less, can be produced by mixing iron oxide containing 0.06 weight % or less of (Si+Ca) and 0.1 weight % or less of (Al+Cr) with compounds of A, R and M elements, calcining the resultant mixture for ferritization, pulverizing the resultant magnetically isotropic ferrite and then heat-treating the pulverized ferrite at 750-950° C. for 0.5-3 hours in the air.

Abstract translation: 铁氧体粉末，具有基本上为磁铅石型晶体结构，平均直径为0.9〜2μm的铁氧体粉末，所述铁氧体粉末具有以下通式表示的基本组成：（A1-xRx）On [（Fe1-yMy） 2O3]，其中A是Sr和/或Ba; R是包括Y，La不可缺少的稀土元素中的至少一种; M是选自Co，Mn，Ni和Zn中的至少一种元素; 并且x，y和n是满足0.01 <= x <= 0.4，[x /（2.6n）] <= y <= [x /（1.6n）]和5 <= n <= 6 ，（Si + Ca）为0.2重量％以下，（Al + Cr）为0.13重量％以下，可以通过混合含有0.06重量％以下的（Si + Ca）和0.1重量％的氧化铁或 将Al（Al + Cr）与A，R和M元素的化合物相比较，煅烧所得的铁素体混合物，粉碎所得的磁各向同性铁素体，然后在750-950℃下热处理粉碎的铁素体0.5-3小时 在空中。

公开(公告)号：US6125255A

公开(公告)日：2000-09-26

申请号：US718758

申请日：1996-09-23

Applicant: Alan M. Litman ,  Jorge A. Alvarez

Inventor： Alan M. Litman ,  Jorge A. Alvarez

IPC: G03G15/09 ,  H01F7/02

CPC classification number: H01F7/0268 ,  G03G15/0921 ,  Y10T29/49549 ,  Y10T29/49563

Abstract: A method for manufacturing a magnetic roll for use in an electrophotographic printing machine of the type having an electrostatic latent image recorded on a photoconductive member is provided. The method includes the steps of placing a shaft in a mold cavity and molding a core in the mold cavity with the shaft in the cavity. The core defines a pocket on the periphery of the core. The method further includes the step of attaching a magnet to the pocket.

公开(公告)号：US6104271A

公开(公告)日：2000-08-15

申请号：US387129

申请日：1999-08-31

Applicant: William T. Barrett

Inventor： William T. Barrett

IPC: B03C1/28 ,  H01F7/02

CPC classification number: B03C1/28 ,  H01F7/0257 ,  H01F7/0268

Abstract: A composite magnet having a steel back plate on which an inner section of a first magnetic material having a high residual magnetic strength and an energy product greater than 25 million and preferably 35 million G-Oe or greater is positioned. Although possessing such high residual magnetic strength, the first magnetic material contained in the inner section comprises less than 1/8 the entire volume of the composite magnet. A barrier surrounds the inner section, and an outer section of a second magnetic material abuts the barrier and surrounds the sides of the first magnetic material. Such second section of magnetic material has a low residual magnetic strength (i.e., 3,800-4,000 G), and an energy product greater than 3 million G-Oe.

Abstract translation: 一种具有钢背板的复合磁体，其上具有高残余磁强度的第一磁性材料的内部和能量乘积大于25百万，优选为3500万G-Oe以上的复合磁体。 虽然具有这样高的残余磁强度，但是包含在内部部分中的第一磁性材料包括复合磁体的整个体积小于+ E，fra 1/8 + EE。 屏障围绕内部部分，第二磁性材料的外部部分邻接屏障并围绕第一磁性材料的侧面。 这种磁性材料的第二部分具有低的残余磁强度（即3800-4,000G），能量乘积大于300万G-Oe。