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21. 发明专利

JPH07224748A DISTRIBUTOR FOR IGNITING INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH07224748A
公开(公告)日：1995-08-22
申请号：JP1653394
申请日：1994-02-10
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： NUMATA YOSHIMICHI , FUKUI HIROSHI , NAGAE HIROMITSU , YUMINO MASATAKA
IPC分类号： F02P7/02 , H01H1/02 , H01H1/025
摘要： PURPOSE:To provide a distributor for igniting an internal combustion engine for keeping agreeable radio noise reducing effect at all times without increasing discharge voltage even if the distributor is used for a long time. CONSTITUTION:The tip end discharge portion 15 of an electrode is constituted to be a laminated construction with a metal electrode member 18 and a dielectric member 19 and the metal electrode member 18 is formed of copper alloy containing 32-45% weight zinc and more desirable characteristic can be obtained by making its heat conductivity 40kcal/mh deg.C and its fusion point at 940 deg.C or less. The dielectric member is formed of a resin impregnated fabric in which resin having dielectric characteristic is impregnated, in particular, with a glass fiber containing Si resin. Accordingly, generation of a recess and a clearance of the tip end discharged portion 15 of the electrode which cause rising of the discharge voltage can be suppressed by using the metal electrode member 18 having these composition and material value and the discharge voltage can be kept in low state and generation of radio noise can be restrained even if it is used for a long term.

22. 发明专利

JPH0629662B2 失效
公开(公告)号：JPH0629662B2
公开(公告)日：1994-04-20
申请号：JP6488389
申请日：1989-03-16
申请人： HITACHI LTD
发明人： MORIMOTO TADAOKI , USAMI KENICHI , OONAKA NORYUKI , FUKUI HIROSHI , KOYAMA SHUNTARO , IMAMURA YASUSHI
IPC分类号： F23M5/00 , C10J3/72 , F23J1/08 , F23M5/08 , F27B1/00

23. 发明专利

JPH05347013A 失效
公开(公告)号：JPH05347013A
公开(公告)日：1993-12-27
申请号：JP1843093
申请日：1993-02-05
申请人： HITACHI LTD
发明人： HOSHIYA HIROYUKI , MITSUOKA KATSUYA , SATO MASAAKI , ARAI REIKO , SOEYA SUSUMU , FUKUI HIROSHI , FUYAMA MORIAKI , SATO FUMIO
IPC分类号： G11B5/012 , G11B5/09 , G11B5/39 , G11B5/48 , H01F10/06
摘要： PURPOSE:To obtain good sensitivity and a high reproducing output by alternately layering a magnetic film impressed with strong anisotropy depending upon a bias film and a magnetic film impressed with weak anisotropy via a nonmagnetic conductive film. CONSTITUTION:An antiferromagnetic film 32, a magnetic film 11, a nonmagnetic film 20, a magnetic film 12 and a ferromagnetic film 33 are layered on a substrate 50, connecting electrodes. The antiferromagnetic film 32 and the ferromagnetic film 33 are in close contact respectively with the two layers of the magnetic films 11 and 12 separated by the nonmagnetic film, and magnetization of the magnetic films 11 and 12 is induced in the directions of arrows 61 and 62 respectively by heat treatment in a magnetic field in the parallel and orthogonal directions 72 and 73 to the direction 60 of a magnetic field to be sensed or magnetization processing. The antiferromagnetic film 32 is desirable to be nickel oxide for a magnetoresistance effect element in this constitution. Then, it is preferable that the ferromagnetic film is an alloy of Ni 70-90 atomic %, Fe 5-30 atomic %, and Co 1-5 atomic %, or an alloy of Co 30-85 atomic % and Fe 2-50 atomic %.

24. 发明专利

JPH0526431B2 失效
公开(公告)号：JPH0526431B2
公开(公告)日：1993-04-16
申请号：JP15261382
申请日：1982-09-03
申请人： HITACHI LTD
发明人： FUKUI HIROSHI , KIMURA ARATA , TOKUNAGA KIICHI , SATO MASAYOSHI
IPC分类号： H02M7/48 , H02M7/515 , H02M7/521

25. 发明专利

JPH0559482A NITRIDE DISPERSION HEAT RESISTANT STRENGTHENED ALLOY 失效
公开(公告)号：JPH0559482A
公开(公告)日：1993-03-09
申请号：JP24263291
申请日：1991-08-28
申请人： HITACHI LTD
发明人： AONO YASUHISA , IKEDA SHINZO , SUKEGAWA MASAYUKI , KATO TAKAHIKO , KONDO YASUO , IZUMITANI MASAKIYO , FUKUI HIROSHI , KODAMA HIDEYO , YASUDA TAKESHI , KAYANO HIDEO , KURISHITA HIROAKI
IPC分类号： B22F5/12 , C22C1/10 , C22C32/00 , C22C33/02 , C22C38/00 , C22C38/50 , G21C3/07 , G21C3/62
摘要： PURPOSE:To a heat resistant strengthened alloy in which AlN particles and BN particles are dispersed and excellent in high temp. strength. CONSTITUTION:This nitride dispersion heat resistant strengthened alloy is a one provided with a base metal constituted of an Fe base ferritic steel, an Fe base austenitic steel or an Ni base alloy and AlN particles or BN particles dispersed into the matrix of the above base metal and increasing the heat resistance of the base metal.

26. 发明专利

JPH04306564A FUSED CARBONATE TYPE FUEL CELL 失效
公开(公告)号：JPH04306564A
公开(公告)日：1992-10-29
申请号：JP6983691
申请日：1991-04-02
申请人： HITACHI LTD
发明人： YOSHIOKA TAKATOSHI , FUKUI HIROSHI , MORI SHIGENOBU , YOSHIDA TAKEHIKO , HIYAMA KIYOSHI , IWAMOTO KAZUO , KAHARA TOSHIKI , TAKAHASHI TSUTOMU
IPC分类号： H01M8/02
摘要： PURPOSE:To provide internal metallic members having excellent corrosion resistance and hydrogen embrittlement resistance so as to constitute a fused carbonate type fuel cell. CONSTITUTION:Metallic materials constituting the internal part of a fused carbonate type fuel cell are exposed to extremely severe corrosive environment while being in operation since fused salt is adhered to their surfaces. By using metallic members, in which the surface of at least one intermediate material 11 among stainless steel, iron group allay and Ni group alloy is coated with copper or copper alloy 12 having excellent fused salt resistance and hydrogen embrittlement resistance, as current collectors 4 and 5, separator corrugated plates 8 and so on as main parts, defects such as carbonate consumption and increase in electric resistance caused by occurrence of hydrogen embrittlement and corrosion can be restricted, so that the service life of a fuel cell can be lengthened, and realization of high performance characteristics can be attained.

27. 发明专利

JPH0453942B2 失效
公开(公告)号：JPH0453942B2
公开(公告)日：1992-08-28
申请号：JP2041387
申请日：1987-02-02
申请人： HITACHI LTD
发明人： HYAMA KYOSHI , FUKUI HIROSHI , YOSHIOKA TAKATOSHI , YOSHIDA TAKEHIKO
IPC分类号： C22C30/00 , C22C38/00 , C22C38/40 , C22C38/50 , H01M8/02

28. 发明专利

JPH04120246A HEAT RESISTING STEEL AND ITS APPLICATION 失效
公开(公告)号：JPH04120246A
公开(公告)日：1992-04-21
申请号：JP23696990
申请日：1990-09-10
申请人： HITACHI LTD
发明人： SHIGA MASAO , FUKUI HIROSHI , MAENO YOSHIMI , TAKAHASHI SHINTARO , KURIYAMA MITSUO , DOI HIROYUKI , MIZOI TAKAO , TORITANI HAJIME
IPC分类号： F01D5/06 , C22C38/00 , C22C38/48
摘要： PURPOSE:To obtain a heat resisting steel combining strength at high temp. with high toughness by specifying a composition consisting of C, Si, Mn, Cr, Mo, Ni, V, Nb, Ta, N, and Fe and limiting impurity content. CONSTITUTION:This steel is a heat resisting steel having a composition which consists of, by weight, 0.05-0.20% C, =50kg/mm 10 hr creep ructure strength at 450 deg.C, >=8kg-m/cm 20 deg.C V-notch Charpy impact value, and

29. 发明专利

JPH0485771A MAGNETIC RECORDING DEVICE 失效
公开(公告)号：JPH0485771A
公开(公告)日：1992-03-18
申请号：JP19795790
申请日：1990-07-27
申请人： HITACHI LTD
发明人： FUKUOKA HIROTSUGU , FUKUI HIROSHI , SUDA MITSUO , SUGITA KEN , KAWAKAMI HIROJI
IPC分类号： G11B21/21 , G11B5/60
摘要： PURPOSE:To improve the recording density and the reliability of a magnetic recording device by providing a means which specific the relative speed of a magnetic head to a magnetic disk at the innermost circumferential track of a magnetic disk and a means which applies the load to the magnetic head so as to keep a space under the specific relative speed. CONSTITUTION:In a magnetic disk 3 a protection film 302 and a lubricant film 301 are laminated on a magnetic recording medium 303. In a magnetic head 4 a slider 1 is buried into the surface counter to the disk 3 and only the tip of the head 4 is exposed. In a support system 2 the load is applied by a plate spring, etc., around a fulcrum part 202 and through an acting point part 201 so that the slider 1 is pressed to the disk 3. At the same time, the thickness of the base board of the disk 3 is reduced for improvement of the flexibility and a controller 7 controls the gas and the pressure at each prescribed level within a closed container 6. As a result, the relative speed of the disk 3 is reduced down to 6 - 40 m/s or less at the innermost circumferential track of the disk 3 and the space between the slider 1 and the surface of the disk 3 is set at

30. 发明专利

JPH047136A COMPOSITE STRUCTURE ON GROUND SURFACE 失效
公开(公告)号：JPH047136A
公开(公告)日：1992-01-10
申请号：JP10923390
申请日：1990-04-25
申请人： HITACHI LTD
发明人： YOSHIOKA TAKATOSHI , FUKUI HIROSHI , KOJIMA YOSHIYUKI , HIYAMA KIYOSHI , YOSHIDA TAKEHIKO
IPC分类号： B32B15/08 , B32B3/24 , B32B3/28
摘要： PURPOSE:To enable a composite structure to be made by using the thin plate made of metal whose weight is reduced and whose workability is excellent by a method in which a corrugated member has a plurality of holes, and the flat plate with holes or without holes is bonded to one or both outermost surfaces of the laminate of the single layer or a plurality of layers. CONSTITUTION:Corrugated plate is worked into a square of 150mm, and after the working, the corrugated plates are mutually bonded, and then the corrugated material of three layer laminate in which their corrugation-directions are crossed in formed, and the parts 3 to be bonded are bonded by soldering method. The soldering method is carried out in a vacuum vessel at about 1050 deg.C for one hour-holding condition. The sheet of the soldering material 7 is temporally fitted to the corrugated plate by spot welding, and then other corrugated plate is place thereon and is temporarily fitted thereon again similarly. After it has been immovably fixed, they are mutually soldered with the small bond applied thereonto. A perforated flat plate is put between two corrugated plates. The soldering of each plate is also achieved similarly. By such condition, the corrugated light structural material made of stainless steel is produced. The weight of the structural material is about 75g, and it is almost equal to the Ti allow material made into the same shape.

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