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1. 发明专利

JPH02880B2 失效
公开(公告)号：JPH02880B2
公开(公告)日：1990-01-09
申请号：JP17016481
申请日：1981-10-26
申请人： TDK ELECTRONICS CO LTD
发明人： ISHINO TAKESHI , YAMASHITA HIROSHI , ICHIHARA KENICHI
IPC分类号： H01F1/00 , H01B1/24 , H01B3/00 , H05K9/00

2. 发明专利

JPS58144565A RUBBER MAGNET FOR MOTOR 失效
公开(公告)号：JPS58144565A
公开(公告)日：1983-08-27
申请号：JP734682
申请日：1982-01-20
申请人： TDK ELECTRONICS CO LTD
发明人： ISHINO TAKESHI , TADA TAKEO , HONDA KATSUSHI
IPC分类号： H02K1/17 , H02K15/03 , H02K23/04
摘要： PURPOSE:To obtain a miniature DC motor which has good workability at the manufacturing time with small size and high efficiency by setting the ratio of the thickness to the outer diameter of a rubber magnet for a motor mixed with ferrite powder in rubber to the specific range. CONSTITUTION:When the ratio of the thickness t to the outer diameter O.D of a rubber magnet 1 for a motor mixed with ferrite powder in rubber is represented by k (k=t/O.D), the value of the k is set to the range of 0.020-0.085. For example, approx. 10% of rubber is mixed with ferrite powder such as barium ferrite or strontium ferrite or the like, the mixture is then magnetized as a rubber magnet, which is cut in a rectangular sheet. This sheet is rolled in a cylindrical shape, contacted with the inner surface of a cylindrical iron motor case 2 to form a stator, and a rotor 3 is disposed inside the magnet 1. The ratio of the thickness of the magnet 1 to the outer diameter in this micromotor is set to the above range.

3. 发明专利

JPS5891604A MAGNETIC ROLLER 失效
公开(公告)号：JPS5891604A
公开(公告)日：1983-05-31
申请号：JP18978181
申请日：1981-11-26
申请人： TDK ELECTRONICS CO LTD
发明人： ISHINO TAKESHI , TADA TAKEO , HONDA KATSUSHI , FUKUSHIMA TAKESHI
IPC分类号： G03G15/09 , H01F7/02
摘要： PURPOSE:To form the magnetic roller having enlarged surface density of magnetic flux of magnetic poles, and moreover having the superior action to make magnetic particles to transfer in the axial direction by a method wherein the spiral type magnetic poles are provided on the outside circumferential face of the cylindrical magnet substance having multipolar anisotropy on the outside circumference. CONSTITUTION:The magnetic poles are magnetized spirally on the outside circumferential face of the cylindrical magnet substance 1 having multipolar anisotropy on the outside circumference. Because magnetism of the spirally magnetic pole is strengthened the most at the part X to cross a straight line (b) parallel with the axial direction presenting magnetism strongly according to anisotropy of the outside circumference, and magnetism is weakened the most at the intermediate part of the parts X, the difference between the weakest part and the strongest part of the magnetic pole acts to promote a transference in the lateral direction of the magnetic particles when used for a magnetic brush, etc.

4. 发明专利

JPS57190306A COIL DEVICE 失效
公开(公告)号：JPS57190306A
公开(公告)日：1982-11-22
申请号：JP7431181
申请日：1981-05-19
申请人： TDK ELECTRONICS CO LTD
发明人： ISHINO TAKESHI , YAMASHITA HIROSHI
IPC分类号： H01F27/06 , H01F27/02 , H01F27/36
摘要： PURPOSE:To prevent the deterioration of coil characteristic due to an iron material, by using a metal fitting or case provided with non-magnetic metal foils such as copper foil, aluminium foil on the iron material. CONSTITUTION:The inductance and Q of the coil 3 with nothing around the antenna 3 are respectively set 100%. The arrangement of only an iron plate 4 reduces the inductance of the coil 3 to approx. 90% and Q to approx. 14%. The Cu foil 6 with the thickness 50mum or 100mum is stuck on the surface adjacent to the coil of the iron plate 4 positioned at approx. 5mm. off from the side of the coil 3. Thus, the inductance of the coil 3 is reduced to 90% or approx. 97% and Q to approx. 44% or 76%. In other words, compared with the case of only the iron plate 4, the inductance and Q of the coil 3 are both improved.

5. 发明专利

JPS5734398A Radio wave absorbing composition 失效
公开(公告)号：JPS5734398A
公开(公告)日：1982-02-24
申请号：JP10917980
申请日：1980-08-11
申请人： Tdk Electronics Co Ltd
发明人： ISHINO TAKESHI , ICHIHARA KENICHI
IPC分类号： H05K9/00 , H01Q17/00

6. 发明专利

JPS56115008A ELECTRIC WAVE ABSORBER 失效
公开(公告)号：JPS56115008A
公开(公告)日：1981-09-10
申请号：JP1240280
申请日：1980-02-06
申请人： TDK ELECTRONICS CO LTD
发明人： ISHINO TAKESHI , WATANABE TAKASHI
IPC分类号： H01Q17/00
摘要： PURPOSE:To obtain an electric wave absorber having an excellent oblique incident property, by using a plural number of layers in which the content of the conductive particle increases successively and at the same time forming the cross section of the final layer into a triangle using the arriving direction of the electric wave for the apex. CONSTITUTION:The electric wave absorber is formed by connecting the unit blocks A in a desired number. The block A is composed of layers 1-4, and the content of the conductive particle is minimum in the layer 1 that serves as the projection face of the electric wave and then increases successively toward the layers 2 and 3 to be maximum at the layer 4. The layer 1 is composed of a plural number of elements 1a having a cross section of an equilateral triangle, and the layer 2 is formed with a rectangular cross section. The layer 4 has a cross section of an equilateral triangle with its vertical angle touching the rear face of the layer 2. And the base opposite to the vertical angle is distributed nearly in parallel to the base of the element 1a. With such distribution of the layer 4, the layer 3 having a triangular cross section is provided in the space between the layers 4 and 2. In such constitution, an excellent obliquie incident property can be obtained.

7. 发明专利

JPS5685899A METHOD AND DEVICE FOR SHIELDING RADIO WAVE DARK CHAMBER 失效
公开(公告)号：JPS5685899A
公开(公告)日：1981-07-13
申请号：JP16258379
申请日：1979-12-14
申请人： TDK ELECTRONICS CO LTD , TOMOEGUMI IRON WORKS
发明人： ISHINO TAKESHI , ONO NOBUYUKI , OOTA MOTOJI , SATOU FUMIO , SUZUKI MOTOO
IPC分类号： H05K9/00 , E04B1/92

8. 发明专利

JPS5653156A ELECTRICAL RADIATION ABSORBING COMPOSITION 失效
公开(公告)号：JPS5653156A
公开(公告)日：1981-05-12
申请号：JP12887179
申请日：1979-10-08
申请人： TDK ELECTRONICS CO LTD
发明人： ISHINO TAKESHI , ICHIHARA KENICHI
IPC分类号： C08K3/00 , C08K3/22 , C08K3/34 , C09D5/00
摘要： PURPOSE:The titled composition that is produced by using a resin as a medium, mixing it with a specific amount of a powder consisting oa a magnetic material and talc, adding a solvent thereto and coating the same on metal plates, thua functioning as an electrical radiation absorbing body. CONSTITUTION:A resin such as epoxy resin is used as a medium and it is mixed with a powder consisting of a magnetic material such as ferrite and talc at a volume ratio of over 0.5. Further, a solvent such as thinner is added thereto to give the objective composition. EFFECT:The composition permits thick coating of millimeter level and keeps the accuracy of the film thickness simultaneously to give an electrical radiation absorber with uniform surfaces.

9. 发明专利

JPS5498101A REFLECTION PREVENTING UNIT 失效
公开(公告)号：JPS5498101A
公开(公告)日：1979-08-02
申请号：JP424178
申请日：1978-01-20
申请人： TDK ELECTRONICS CO LTD , SUETAKE KUNIHIRO
发明人： SUETAKE KUNIHIRO , ISHINO TAKESHI
IPC分类号： H01Q17/00 , H04B15/00
摘要： PURPOSE:To prevent an electromagnetic wave from being reflected from an iron tower, a bridge, etc., by covering conductive bars, which are constituents of the iron tower, the bridge, etc., with a ferrite cylinder to enhance impedance. CONSTITUTION:Reflection prevention unit 1 which is arranged around iron pipe 2 consists of semicylindrical ferrite half bodies 3 and 4 which can unite with each other, and conductive foil 5 such as aluminum foil is fitted to the inside circumference face of unit 1. Since the surface impedance becomes high because materials having a high electromagnetic wave absorption characteristic are used as the ferrite forming ferrite half bodies 3 and 4, the current is flowed little, and as a result, the reflected electromagnetic wave is reduced. It is sufficient for this reflection prevention unit if the circumference of conductors of the iron tower, the bridge, etc., is surrounded by the ferrite which has a high electromagnetic wave absorption characteristic, and the form of this unit may be selected properly as desired.

10. 发明专利

JPS53109401A WAVE ABSORBING WALL 失效
公开(公告)号：JPS53109401A
公开(公告)日：1978-09-25
申请号：JP2459977
申请日：1977-03-07
申请人： TDK ELECTRONICS CO LTD
发明人： ISHINO TAKESHI , WATANABE TAKASHI
IPC分类号： H05K9/00 , E04F13/02 , H01Q17/00
摘要： PURPOSE:To increase the wave absorbing characteristics, by preventing the drips of paint and almost uniforming the thickness of paint, through coating of the wave absorbing paint on the surface of construction by use with low dielectric material.

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