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1. 发明专利

JPH0294579A ELECTROSTRICTIVE PORCELAIN COMPOSITION FOR ULTRASONIC VIBRATOR 失效
公开(公告)号：JPH0294579A
公开(公告)日：1990-04-05
申请号：JP24412788
申请日：1988-09-30
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： MASUZAWA YUTAKA , SADAMURA SHIGERU , TAKEUCHI HIROYUKI , ITO YUKIO , NAKATANI CHITOSE
IPC分类号： C04B35/00 , C04B35/46 , H01L41/187 , H04R17/00 , H04R17/08
摘要： PURPOSE:To obtain a composite electrostrictive material made of electrostrictive porcelain composition and polymer substance and having high performance and an ultrasonic vibrator and an ultrasonic probe to be controlled at its electroacoustic conversion efficiency according to a bias electric field intensity by holding powder of specific porcelain composition in sheetlike polymer or vertically burying many fine columnar porcelains of the composition in the sheet face of the polymer. CONSTITUTION:The composition of an electrostrictive porcelain for an ultrasonic vibrator is generated by a general formula (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3, where 0.05

2. 发明专利

JPS63260299A ULTRASONIC WAVE PROBE 失效
公开(公告)号：JPS63260299A
公开(公告)日：1988-10-27
申请号：JP9308987
申请日：1987-04-17
申请人： HITACHI LTD , HITACHI MEDICAL CORP , HITACHI METALS LTD
发明人： NAKATANI CHITOSE , TAKEUCHI HIROYUKI , KATAKURA KAGEYOSHI
IPC分类号： A61B8/00 , G01N29/04 , G01N29/24 , H04R17/00
摘要： PURPOSE:To facilitate the connection of a lead wire by forming alternately a strip-shaped electrode and an electrode with continuity thereto at an interval to the side face of a composite piezoelectric substance and connecting lead wires at an intervalfrom both side faces. CONSTITUTION:The strip-shaped electrodes 104-110 are formed on a composite piezoelectric substance 103 where lots of pillar piezoelectric substances 101 are imbedded in an organic substance 102 and electrodes 111-117 are formed alternately at an interval to the side face. Lead wires are connected alternately from both side faces by using the electrodes 111-117.

3. 发明专利

JPH01242686A PRODUCTION OF CERAMIC SCINTILLATOR 失效
公开(公告)号：JPH01242686A
公开(公告)日：1989-09-27
申请号：JP6744688
申请日：1988-03-23
申请人： HITACHI LTD , HITACHI METALS LTD , HITACHI MEDICAL CORP
发明人： ITO YUKIO , YOSHIDA MINORU , TAKEUCHI HIROYUKI , TODA AKIZO , YAMADA TAKAMICHI , TSUKUDA YASUO
IPC分类号： G01T1/20 , C04B35/64 , C04B35/645 , C09K11/00
摘要： PURPOSE:To make it possible to produce a high-quality crack-free ceramic scintillator, by using a metal having a coefficient of thermal expansion substantially equal to that of the sintered substance as the raw material for a metallic capsule in which the material is packed in sintering a rare earth oxysulfide by the HIP method. CONSTITUTION:In sintering a rare earth oxysulfide [e.g., a compound of the formula (wherein x is in the range of 3X10 , and the amount of F is 2-1000ppm)] by the hot isostatic press method (hereinbelow referred to as HIP), a metal having a coefficient of thermal expansion substantially equal to that of the sintered substance is used as the raw material for a metallic capsule in which the material is packed together with a sintering aid (e.g., Li2GeF6). For instance, iron-nickel steel is the most suitable for the rare earth oxysulfide of the above formula. By performing HIP by using this capsule, a crack-free ceramic scintillator can be made in good yields. Therefore, the ceramic scintillator obtained above is suitable as a material for a radiation-detecting element for X-ray CT.

4. 发明专利

JPS62122499A FORMATION OF COMPOSITE PIEZOELECTRIC MATERIAL 失效
公开(公告)号：JPS62122499A
公开(公告)日：1987-06-03
申请号：JP26122085
申请日：1985-11-22
申请人： HITACHI LTD , HITACHI METALS LTD , HITACHI MEDICAL CORP
发明人： NAKATANI CHITOSE , TAKEUCHI HIROYUKI , KATAKURA KAGEYOSHI , NAGASAWA MASAYUKI
IPC分类号： A61B8/00 , H04R17/00 , H04R31/00
摘要： PURPOSE:To accurately and easily manufacture a composite piezoelectric material that formerly is hard to work by forming a cut groove form the front surface of a resonator while remaining a part of its thickness, packing a resin in the said groove, and cutting off the unnecessary part of the resonator from its rear surface. CONSTITUTION:The resonator 201 is temporarily adhered on a block 203 having excellent parallelism and flatness with a resin 202 softened when wax or the like is heated. Then a cut groove 204 is formed to the depth of t1 longer than the thickness of the composite piezoelectric material to be formed in matrix state in the resonator 201 while leaving a part of the thickness by means of a diesing saw. A resin such as polyurethane or epoxy resin 206 is packed and cured in the groove 204. Then the resin 202 is melted. The resonator 201 is turned over, and temporarily adhered on the block having the excellent parallelism and flatness 207 with wax, etc. 208. Thereafter, the unnecessary part of the resonator 201 is sequentially cut off from the edge by using a thicker blade 209 so that the depth of the cut-off part is made equal to the thickness t2 of the composite piezoelectric material to be formed. Finally, the material is stripped off from the block 207 to obtain the composite piezoelectric material.

5. 发明专利

JPH01242687A PRODUCTION OF CERAMIC SCINTILLATOR 失效
公开(公告)号：JPH01242687A
公开(公告)日：1989-09-27
申请号：JP6744788
申请日：1988-03-23
申请人： HITACHI LTD , HITACHI MEDICAL CORP , HITACHI METALS LTD
发明人： ITO YUKIO , TAKEUCHI HIROYUKI , YAMADA TAKAMICHI , TODA AKIZO , TSUKUDA YASUO
IPC分类号： G01T1/20 , C04B35/64 , C04B35/645 , C09K11/00 , C09K11/08
摘要： PURPOSE:To produce a ceramic scintillator having a high luminescent power, a very small dispersion of power and excellent uniformity, by using a powder material having a specified particle diameter in sintering a rare earth oxysulfide powder by the HIP method. CONSTITUTION:In sintering a powder of a rare earth oxysulfide [e.g., a compound of the formula (wherein x is in the range of 3X10 , and the amount of F is 2-1000ppm)] by the hot isostatic press method (hereinbelow referred to as HIP), a powder of a mean particle diameter

6. 发明专利

JPS63195525A ULTRASONIC LEVEL GAUGE 失效
公开(公告)号：JPS63195525A
公开(公告)日：1988-08-12
申请号：JP2630187
申请日：1987-02-09
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： TAKEUCHI HIROYUKI , NAKATANI CHITOSE , KATAKURA KAGEYOSHI , SADAMURA SHIGERU , MARUTA KENJI
IPC分类号： G01F23/296 , G01F23/28 , G01S7/52 , G01S7/521
摘要： PURPOSE:To measure the liquid level in a container which has an optional curved surface with high sensitivity by using a composite piezoelectric body formed by embedding many columnar inorganic piezoelectric bodies in a sheet type organic material at right angles to the sheet surface. CONSTITUTION:A zircon-titanate (PZT) ceramic plate which is polarized uniformly in a thickness direction and, for example, 80mm square and 0.4mm thick is adhered on a ferrite base with electron wax, and this adhered body is cut in a mesh shape at 0.4mm pitch by using a blade which is 0.2mm thick. The sheet type composite piezoelectric body of 0.4mm in thick which is obtained by charging and caking polyurethane in grooves formed by said cutting is separated from the ferrite base by dissolving the electron wax. Then, composite piezoelectric bodies 12 of 10mm square are cut, two-layered films of chromium and gold are adhered on both surfaces as electrodes, and leads are fixed with a conductive adhesive. The obtained element 21 is adhered on the bottom surface of the container 23 which contains liquid and a driving circuit 22 for ultrasonic wave pulse generation is connected. Then liquid surface reflected ultrasonic wave pulses are observed 24 to measure the height of the liquid surface.

7. 发明专利

JPS62247700A PIEZOELECTRIC SPEAKER 失效
公开(公告)号：JPS62247700A
公开(公告)日：1987-10-28
申请号：JP8919886
申请日：1986-04-19
申请人： HITACHI METALS LTD , HITACHI LTD
发明人： ARAI YASUO , SADAMURA SHIGERU , MARUTA KENJI , NAKATANI CHITOSE , TAKEUCHI HIROYUKI , KATAKURA KAGEYOSHI
IPC分类号： H04R17/00
摘要： PURPOSE:To secure generation of sound with high efficiency over a wide frequency band by connecting the side faces of plural columnar piezoelectric bodies with organic matter to obtain a sheet type composite piezoelectric body and providing electrodes on both side of said composite piezoelectric body to drive this body with electroacoustic signals. CONSTITUTION:A PZT ceramics 1 polarized evenly in its thickness direction and having, e.g. a 100mm diameter and 0.5mm thickness is fixed to a flat plate. Then a mesh grooves are formed to the PZT ceramics 1 by a blade with 0.2mm depth and 0.15mm pitches. Then the urethane resin 2 is filled into those grooves and 2 grinding process is applied to the rear side of the substance 1 after the resin 2 is hardened. Thus a composite piezoelectric body 3 is formed. This body 3 is fixed to a ring 4 made of a hard material via a spring ring 5 so that the light tensile stress is applied to the ring 4. The electrodes 6 and 6' are formed on both sides of the body 3 and epoxy resin 8 is laminated on these electrodes as a protecting film. Then lead wire 9 is attached to the sub stance 3 via a conductive adhesive 7. In such a constitution, this piezoelectric speaker can produce acoustic signals with high efficiency over a wide frequency range.

8. 发明专利

JPS62150610A INPUT DEVICE 失效
公开(公告)号：JPS62150610A
公开(公告)日：1987-07-04
申请号：JP29065785
申请日：1985-12-25
申请人： HITACHI LTD , HITACHI METALS LTD , HITACHI MEDICAL CORP
发明人： NAKATANI CHITOSE , TAKEUCHI HIROYUKI , KATAKURA KAGEYOSHI
IPC分类号： H01H13/00 , G06F3/02 , H01L37/02 , H01L41/113 , H01L41/18 , H03K17/96

9. 发明专利

JPH01242456A PRODUCTION OF RARE EARTH OXYSULFIDE SINTERED COMPACT 失效
公开(公告)号：JPH01242456A
公开(公告)日：1989-09-27
申请号：JP6744888
申请日：1988-03-23
申请人： HITACHI LTD , HITACHI MEDICAL CORP , HITACHI METALS LTD
发明人： TODA AKIZO , YAMADA TAKAMICHI , ITO YUKIO , IMAI KUNINORI , KANETOMO MASABUMI , KATO SHIGEO , TAKEUCHI HIROYUKI , TSUKUDA YASUO
IPC分类号： C04B35/547 , C04B35/00 , C04B35/64
摘要： PURPOSE:To produce the title sintered compact having luminous output with small scattering in a good yield by filling a specified substance together with rare earth oxysulfide powder in a metal capsule, by sealing after making vacuous and by heating and pressing. CONSTITUTION:In the production of rare earth oxysulfide (hereinafter referred to as Gd2O2S) sintered compact by filling Gd2O2S powder in the metal capsule, by sealing after making the capsule vacuous and by heating and pressing, the substance having higher vapor pressure of sulfur at >=500 deg.C than that of Gd2O2S (e.g., FeS2, CuS, Ag2S, PbS) is made to coexist in the capsule. Thereby, the decomposition of Gd2O2S at a high temp. is suppressed and the scattering of the characteristics of Gd2O2S sintered compact is remarkably decreased to obtain the sintered compact suitable as scintillator for X-ray CT.

10. 发明专利

JPS63168148A HEMOMANOMETER 失效
公开(公告)号：JPS63168148A
公开(公告)日：1988-07-12
申请号：JP31313286
申请日：1986-12-29
申请人： HITACHI LTD , HITACHI METALS LTD , HITACHI MEDICAL CORP
发明人： TAKEUCHI HIROYUKI , NAKATANI CHITOSE , KATAKURA KAGEYOSHI , SADAMURA SHIGERU , MARUTA KENJI
IPC分类号： A61B5/022 , A61B5/02

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