Tag Archives: magnet

Producing and fixing method for magnet head slide block

Application Number  00129294 Application Date  2000.10.08 Publication Number  1290924 Publication Date  2001.04.11 Priority Information   1999/10/4 JP 282959/99   International Classification  G11B5/127;G11B5/60   Applicant(s) Name  TDK Corp.   Address     Inventor(s) Name  Oyama Akinori;Ohayashi Kazuhiro   Patent Agency Code  72001 Patent Agent  zheng jianhui AbstractA method of manufacturing a magnetic head slider and fixing… Read More »

Production method of R-Fe-B type sintered magnet, making method of alloy powder material of said magnet and storage method

Application Number: 00123900Application Date: 2000.08.29Publication Number: 1291776Publication Date: 2001.04.18Priority Information: 1999/8/30 JP 242556/1999International: H01F1/08Applicant(s) Name: Sumitomo Special Metals Co., Ltd.Address: Inventor(s) Name: Kuni YoshitaPatent Agency Code: 11021Patent Agent: yan fangAbstract The method of producing an R-Fe-B type sintered magnet according to the present invention includes the steps of: (a) preparing an alloy powder material in… Read More »

Magnetic attractor by neodimium magnet

Application Number: 00124646Application Date: 2000.09.26Publication Number: 1345690Publication Date: 2002.04.24Priority Information: International: B66C1/04Applicant(s) Name: Chong HyongAddress: Inventor(s) Name: Chong HyongPatent Agency Code: 72002Patent Agent: huang jianfengAbstract The magnetic adsorber possesses: several plate-like magnetic members arranged at a certain interval, in their centre a non-magnetic member is inserted; spacre retaining member positioned between adjacent magnetic members for… Read More »

Nanometer-grade composite magnet powder and mfg. method for magnet

Application Number: 00124825Application Date: 2000.09.18Publication Number: 1289134Publication Date: 2001.03.28Priority Information: 1999/9/16 JP 262109/1999International: H01F1/053;H01F1/147;H01F41/02;B22F1/00;C22C38/00;C22C45/02Applicant(s) Name: Sumitomo Specials Co., Ltd.Address: Inventor(s) Name: Shigemoto Kyotaka;Hirosawa Akira;Kanakiyo HirokazuPatent Agency Code: 11021Patent Agent: huang yongkuiAbstract The inventive method for preparing nanocomposite magnet powder includes the step of preparing material alloy powder for a nanocomposite magnet. The powder includes a… Read More »

Arc shape magnet, annular, magnet and its mfg method

Application Number: 00126292Application Date: 2000.07.05Publication Number: 1283857Publication Date: 2001.02.14Priority Information: 1999/7/5 JP 190351/99; 1999/11/19 JP 329590/99International: H01F1/053;H01F1/08;H01F41/02Applicant(s) Name: Hitachi Metal Co., ltd.Address: Inventor(s) Name: Tokoro Hisato;Uchida Kimiminoru;Oda KazuoPatent Agency Code: 11105Patent Agent: fan mengeAbstract A thin arc segment magnet made of a rare earth sintered magnet substantially comprising 28-33 weight % of R and 0.8-1.5… Read More »

Method for producing permanent magnet based on rareearth metal having corrosion resistant film

Application Number: 00126407Application Date: 2000.08.30Publication Number: 1286483Publication Date: 2001.03.07Priority Information: 2000/8/7 JP 238587/2000; 1999/8/30 JP 243473/1999International: H01F41/02;H01F7/02Applicant(s) Name: Sumitomo Special Metal Co., Ltd.Address: Inventor(s) Name: Nishiuchi Takeji;Kikukawa Atsushi;Kikui FumiakiPatent Agency Code: 11038Patent Agent: long chuangongAbstract The present invention provides a process for producing a rare earth metal-based permanent magnet having, on its surface, a corrosion-resistant… Read More »

Permannet magnet self-exciting power generator

Application Number: 00117343Application Date: 2000.08.21Publication Number: 1359190Publication Date: 2002.07.17Priority Information: International: H02N11/00Applicant(s) Name: Li RuoseAddress: Inventor(s) Name: Li RuosePatent Agency Code: 00000Patent Agent: Abstract The permanent magnet self-excitating power generator possesses the structure similar to salient-pole synchronous motor, one-stage multipole main magnetic path and the attraction of permanent magnet are used to produce torque, and… Read More »

Magnet arranging method

Application Number: 00120724Application Date: 2000.07.12Publication Number: 1277063Publication Date: 2000.12.20Priority Information: International: A61N2/08Applicant(s) Name: Ma JingmingAddress: Inventor(s) Name: Ma JingmingPatent Agency Code: 00000Patent Agent: Abstract By means of corresponding N and S poles of magnets to Yin and Yang poles and arranging magnets according to Zhouyi theory, an energy field matching with the around natural field… Read More »

Magnetic powder and isotropic binding magnet

Application Number: 00121672Application Date: 2000.07.21Publication Number: 1282080Publication Date: 2001.01.31Priority Information: 1999/7/22 JP 207910/99International: H01F1/053;H01F1/08Applicant(s) Name: Seiko Epson Corp.Address: Inventor(s) Name: Arai Satru;Kato YoPatent Agency Code: 72001Patent Agent: lu xinhuaAbstract Disclosed herein is a magnetic powder which can provide a magnet having a high magnetic flux density and excellent magnetizability and reliability especially excellent heat resisting… Read More »

Magnetic powder and isotropic magnet

Application Number: 00122568Application Date: 2000.06.10Publication Number: 1279485Publication Date: 2001.01.10Priority Information: 1999/6/11 JP 165234/99International: H01F1/057;H01F1/08Applicant(s) Name: Seiko Epson Corp.Address: Inventor(s) Name: Arai Satoru;Kato HiroshiPatent Agency Code: 72001Patent Agent: yang liqinAbstract Disclosed herein is a magnetic powder which can provide a magnet having a high magnetic flux density and excellent magnetizability and reliability especially excellent heat resisting… Read More »

Permanent-magnet power machine composed of plate-type primary magnet and repellent cavity

Application Number: 00123008Application Date: 2000.09.21Publication Number: 1344058Publication Date: 2002.04.10Priority Information: International: H02N11/00Applicant(s) Name: Zhang HongboAddress: Inventor(s) Name: Zhang HongboPatent Agency Code: 00000Patent Agent: Abstract A permanent-magnet power machine made up of plate-type main magnets and repellent cavity is composed of seat plate, left and right main magnets, upper and lower magnets of repellent cavity, rotary… Read More »

Internal magnetic type magnetic-holding electric magnet

Application Number: 00109975Application Date: 2000.08.04Publication Number: 1292558Publication Date: 2001.04.25Priority Information: International: H01F7/08Applicant(s) Name: Li ZhenjinAddress: Inventor(s) Name: Li ZhenjinPatent Agency Code: 51123Patent Agent: kang haiyanAbstract The inner magnetic type magnetic latching electromagnet applicable to electric devices of relay, electromagnetic contactor, electromagnetic clutch and solenoid valve, etc. includes soft iron shell, armature and coil, said soft… Read More »

Active magnet guide system for elevator

Application Number: 00109492Application Date: 2000.07.06Publication Number: 1279207Publication Date: 2001.01.10Priority Information: 1999/7/6 JP P11-192224International: B66B1/00;B66B7/04Applicant(s) Name: K K. ToshibaAddress: Inventor(s) Name: Morishita AkihiraPatent Agency Code: 11243Patent Agent: cang jianmengAbstract Disclosed is a magnetic guide system for an elevator, including a movable unit configured to move along a guide rail, a magnet unit attached to the movable… Read More »

Bound magnet, its manufacture and driving device using the same

Application Number: 00108873Application Date: 2000.05.19Publication Number: 1274933Publication Date: 2000.11.29Priority Information: 1999/5/19 JP 138597/99; 1999/12/20 JP 361781/99International: H01F1/08Applicant(s) Name: Toshiba K. K.Address: Inventor(s) Name: Nakagawa Katsutoshi;Kawashima Fumiyuki;Nakagawa KatsutoshiPatent Agency Code: 31100Patent Agent: liu libengAbstract The invention improves magnetic characteristics, such as maximum energy product, etc., of a bonded magnet, using a magnet material containing a TbCu7… Read More »

Surface treatment method and apparatus, vapor deposition material, and rare-earth based permanent magnet

Application Number: 00108341Application Date: 2000.05.12Publication Number: 1276440Publication Date: 2000.12.13Priority Information: 2000/4/19 JP 117771/2000; 1999/5/14 JP 134998/1999; 1999/5/14 JP 134999/1999International: C23C14/24;H01F7/02;H01F41/32Applicant(s) Name: Sumitomo Special Metal Co., Ltd.Address: Inventor(s) Name: Nishiuchi Takeshi;Tochishita Yoshiki;Kikui FumiakiPatent Agency Code: 11038Patent Agent: sun zhengAbstract A surface treating process according to the present invention, a vapor deposited film is formed from an… Read More »

Magnet head, magnetic disk, and connection method and equipment

Application Number: 00108139Application Date: 2000.04.28Publication Number: 1275761Publication Date: 2000.12.06Priority Information: 1999/5/28 JP 150599/1999; 1999/10/26 JP 304629/1999; 1999/12/22 JP 365546/1999International: G11B5/48;H01L23/00;H01L21/50Applicant(s) Name: Fujitsu Ltd.Address: Inventor(s) Name: Yoshiryo Hidehiko;Umaba Shunji;Minuma NorioPatent Agency Code: 11038Patent Agent: zheng xiuzheAbstract A head assembly is provided with a mounting surface, and an integrated circuit chip which is mounted on the mounting… Read More »

Magnet head

Application Number: 00107800Application Date: 2000.05.29Publication Number: 1275762Publication Date: 2000.12.06Priority Information: 1999/6/1 JP 153625/99International: G11B5/56Applicant(s) Name: ALPS Electric Co., Ltd.Address: Inventor(s) Name: Uemura MichioPatent Agency Code: 11216Patent Agent: liu jiyangAbstract A magnetic head device, inwhich the mounting plate 21 and the head holding part 22 are integrally formed by one metallic sheet. The magnetic head H2… Read More »

Method for treating hollow parts surface and ring shape binding magnet produced with the same method

Application Number: 00106880Application Date: 2000.02.25Publication Number: 1277078Publication Date: 2000.12.20Priority Information: 1999/2/26 JP 51935/1999International: B05C3/08;B05C19/00;H01F41/14Applicant(s) Name: Sumitomo Special Metal Co., Ltd.Address: Inventor(s) Name: Yoshimura Kimishi;Nishiuchi Takeshi;Kikui FumiakiPatent Agency Code: 11038Patent Agent: long chuangongAbstract A hollow work having a hole communicating with the outside and a fine metal powder producing material are placed into a treating vessel,… Read More »

Method for cutting magnet iron piece

Application Number: 00106827Application Date: 2000.04.17Publication Number: 1270876Publication Date: 2000.10.25Priority Information: 1999/4/15 JP 107745/99International: B24B55/02Applicant(s) Name: Sumitomo Special Metal Co., Ltd.Address: Inventor(s) Name: Kondo SadahikoPatent Agency Code: 31100Patent Agent: hu xiaopingAbstract A cutting blades containing a base plate and cutting edges made of super-abrasive grain formed on the outer peripheral edge thereof, when rare-earth magnet member… Read More »

Rare earth metal base permanent magnet and its producing process

Application Number: 00106723Application Date: 2000.01.27Publication Number: 1267892Publication Date: 2000.09.27Priority Information: 1999/4/23 JP 115835/199; 1999/4/23 JP 115836/199; 1999/1/27 JP 18426/1999; 2000/1/11 JP 2223/2000International: H01F1/053;H01F1/057;H01F7/02Applicant(s) Name: Sumitomo Special Metal Co., Ltd.Address: Inventor(s) Name: Yoshimura Kimishi;Nishiuchi Takeshi;Kikui FumiakiPatent Agency Code: 11038Patent Agent: long chuangongAbstract A rare earth metal-based permanent magnet has a film layer formed substantially of only… Read More »

Method for producing master magnet body assembly for magnetic resonance imaging system

Application Number: 00106597Application Date: 2000.04.14Publication Number: 1278600Publication Date: 2001.01.03Priority Information: 1999/5/10 KR 16603/1999International: A61B5/055;G01N24/00;G01R33/20Applicant(s) Name: Samsung Electronic Co., Ltd.Address: Inventor(s) Name: Nan Sang-Bok;Gang Tong-HonPatent Agency Code: 11038Patent Agent: ma gaoAbstract The invention relates to a method for production of main magnet assembly for magnetic resonance image system, wherein a permanent magnet block and a magnetic… Read More »

Vacuum and permanent magnet compensated pipeline-type hovertrain-overhead railway-station system

Application Number: 00105737Application Date: 2000.04.04Publication Number: 1264660Publication Date: 2000.08.30Priority Information: International: B61B13/08Applicant(s) Name: Li LingqunAddress: Inventor(s) Name: Li Lingqun;Li LingfaPatent Agency Code: 11021Patent Agent: jiang lilouAbstract A pipeline-type vacuum and permanent-magnet compensated hovertrain-overhead railway-stations system features that its track is an enclosed vacuum pipeline with permanent-magnet absorption mechanism installed to its top. The permanent-magnel repelling… Read More »

Large demonstrative magnetic writing board and stuffing and magnet powder used therein

Application Number: 00105421Application Date: 2000.03.28Publication Number: 1267601Publication Date: 2000.09.27Priority Information: International: B43L1/12;H01F1/20Applicant(s) Name: Guan QuanjunAddress: Inventor(s) Name: Guan Quanjun;Guan QuanchunPatent Agency Code: 11230Patent Agent: zhang ejunAbstract The writing board consists of main board, eraser and writing pen. The four-layer structure board consists of reinforcing layer, back panel layer, netted plastic core layer and front plastic… Read More »

Health-care far infrared magnet metal-base composite

Application Number: 00105109Application Date: 2000.03.26Publication Number: 1315735Publication Date: 2001.10.03Priority Information: International: H01F1/032Applicant(s) Name: Dong YuanyuanAddress: Inventor(s) Name: Dong Yuanyuan;Qin SuqinPatent Agency Code: 00000Patent Agent: Abstract A far-infrared magnetic composite material features use of magnetic metal as matrix and contains calcium carbide (0.5-10%), Al2O3 (0.5-10%), ceramic mixture (0.5-10%) and permanent magnet powder (0.5-20%). Its magnetic field… Read More »

Rotor of permanent magnet type rotary motor

Application Number: 00104839Application Date: 2000.03.30Publication Number: 1269624Publication Date: 2000.10.11Priority Information: 1999/3/30 JP 089928/1999International: H02K1/27Applicant(s) Name: Toshiba Co., Ltd.Address: Inventor(s) Name: Takashima Hoshio;Shinmasa Ogishi;Sakaikazu HitoshiPatent Agency Code: 11038Patent Agent: du rixinAbstract A rotor is provided for a permanent magnet type rotating machine having a stator 1 with armature windings 11. The rotor 3 includes a rotor… Read More »

Rear earth/Fe/Boron base magnet alloy fast quenching thin strap

Application Number: 00104690Application Date: 2000.02.15Publication Number: 1267744Publication Date: 2000.09.27Priority Information: 1999/2/15 JP 35394/1999International: C22C38/16;H01F1/053;H01F1/057Applicant(s) Name: Shin-Etsu Chemical Co., Ltd.Address: Inventor(s) Name: Hirota Koichi;Minowa Takehisa;Hashimoto TakahiroPatent Agency Code: 11038Patent Agent: duan chengenAbstract Disclosed is a novel thin ribbon of a rare earth/iron/boron-based magnet alloy prepared by quenching of an alloy melt by the method of strip… Read More »

Multiple magnet pair ultrasonic emulsification fuel-saving dirt-reducing device

Application Number: 00103909Application Date: 2000.02.29Publication Number: 1275693Publication Date: 2000.12.06Priority Information: International: F23K5/12Applicant(s) Name: Zhang ZishengAddress: Inventor(s) Name: Zhang ZishengPatent Agency Code: 00000Patent Agent: Abstract The present invention relates to a multiple magnetic pair ultrasonic homogenization fuel-saving and pollution-reducing equipment. It is mounted in fuel line of gasoline or diesel engine, and has no need of… Read More »

Magnetizing method and device for isotropically adhered permanent magnet

Application Number: 00103224Application Date: 2000.03.24Publication Number: 1264904Publication Date: 2000.08.30Priority Information: International: H01F13/00Applicant(s) Name: Antai Science and Technology Co., Ltd.Address: Inventor(s) Name: Xing Jignsheng;Hao Jiming;Zhang ZhentaoPatent Agency Code: 11207Patent Agent: jin xiangrongAbstract A method and equipment for magnetizing the isotropically adhered permanent magnet features that electromagnet is used to magnetize it, the magnetizing box and damping… Read More »

Sintering box for rareearth magnet sintering and method for making rareearth magnet sintered and processed by said box

Application Number: 00103012Application Date: 2000.02.25Publication Number: 1265947Publication Date: 2000.09.13Priority Information: 1999/3/3 JP 55247/1999International: B22F3/00;H01F1/053Applicant(s) Name: Sumitomo Special Metals Co., Ltd.Address: Inventor(s) Name: Ota Akiyasu;Nigita Katashi;Okayama KokkiPatent Agency Code: 11021Patent Agent: huang yongkuiAbstract A case according to the present invention is used in a sintering process to produce a rare-earth magnet. The case includes: a body… Read More »

Multielement gap type permanent-magnet material and production process of magnetic powler and magnet

Application Number: 00102967Application Date: 2000.03.10Publication Number: 1288239Publication Date: 2001.03.21Priority Information: 1999/9/14 CN 99119076.9International: H01F1/053;H01F1/08;H01F41/02Applicant(s) Name: Beijing Univ.Address: Inventor(s) Name: Yang Yingchang;Cheng Beipei;Ge SenlinPatent Agency Code: 11021Patent Agent: wang huiminAbstract This invention relates to a multi-element rare earth-iron gap type magnetic materials, whose general formula is: (RA1-alpha RB)X(M01-beta M beta)y Fe100-x-y-zIz; where: RA=light rare earth elements,… Read More »