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1. 发明专利

JPS57197882A PIEZOELECTRIC OSCILLATOR 失效
公开(公告)号：JPS57197882A
公开(公告)日：1982-12-04
申请号：JP8808782
申请日：1982-05-26
申请人： HITACHI LTD , MITSUBISHI PETROCHEMICAL CO
发明人： ISHIKAWA KIYOSHI , KANDA HIROSHI , KURODA MASAO , SEO IWAO
IPC分类号： H01L41/09 , H03H9/48
摘要： PURPOSE:To decrease the size of high accurate fine oscillation devices by a bimorph piezoelectric oscillator wherein a composite piezoelectric material comprising a high molecule material and a high dielectric substance is formed into a U-shape. CONSTITUTION:A high molecule material such as polyvinylidene fluoride and high dielectric ceramic such as fine powder of lead titanate are mixed and kneaded with each other, thereby to obtain a composite piezoelectric material. This material is formed into a U shape. Then, a bimorph piezoelectric oscillator is manufactured using thus formed plural units. By so doing, it becomes possible to attain compact sized fine oscillation devices with high accuracy in order of micron or less.

2. 发明专利

JPS5775640A Ultrasonic shotographing apparatus 失效
标题翻译：超声波记录仪
公开(公告)号：JPS5775640A
公开(公告)日：1982-05-12
申请号：JP15064880
申请日：1980-10-29
申请人： Hitachi Ltd , Mitsubishi Petrochemical Co
发明人： KONDOU TOSHIROU , YAMAMOTO ETSUJI , KANDA HIROSHI , ISHIKAWA KIYOSHI , KURODA MASAO , NAKATANI CHITOSE , DATEYAMA REIKO , SEO IWAO
IPC分类号： A61B8/00 , A61B10/00 , G01N29/04 , G01N29/24 , G01N29/26

3. 发明专利

JPH04309850A INSPECTION OF DEFECTIVE OF GLASS CYLINDRICAL BODY 失效
公开(公告)号：JPH04309850A
公开(公告)日：1992-11-02
申请号：JP7271891
申请日：1991-04-05
申请人： HITACHI LTD , FUJISAWA PHARMACEUTICAL CO , HITACHI ENG CO LTD
发明人： MATSUSHIMA MITSUHIRO , SHIMAZAKI OSAMU , ISHIKAWA KIYOSHI , SHIROKURA YASUTADA
IPC分类号： G01N21/88 , G01N21/90 , G06T1/00 , H04N7/18
摘要： PURPOSE:To detect the defective such as the crack and cut which exist in a transparent glass cylindrical body. CONSTITUTION:Light is irradiated to the side surface at one edge part of a transparent glass cylindrical body 1, and the light which transmits through the inside of the wall of the glass cylindrical body and radiates from the surface of the opened port at the other edge of the glass cylindrical body is taken photograph by a CCD camera 6, and the photographed image is binary- converted, and the good or defective of the glass cylindrical body is judged from the magnitude of the defective image which appears in the image region corresponding to the dark part of the glass cylinder body where light does not radiate. Accordingly, visual inspection can be made automatic, and the reduction of inspection cost and the prevention for the supply of the defective articles can be achieved effectively.

4. 发明专利

JPH03125966A ULTRASONIC PROBE APPARATUS 失效
公开(公告)号：JPH03125966A
公开(公告)日：1991-05-29
申请号：JP26541289
申请日：1989-10-12
申请人： HITACHI CONSTRUCTION MACHINERY , HITACHI LTD
发明人： HASHIMOTO HISANORI , TAMURA MORIO , HATANO KAZUYOSHI , SATO FUJIO , ICHIYANAGI TAKESHI , ISHIKAWA KIYOSHI , KAWANUMA TAKAO , SATO KAZUO , TANAKA SHINJI
IPC分类号： G01N29/24 , H04R1/20 , H04R17/00
摘要： PURPOSE:To easily and effectively perform the alteration to an ultrasonic probe having a different characteristic by moving a substrate provided with a plurality of ultrasonic probes having different characteristics to make it possible to select the arbitrary one probe. CONSTITUTION:A plurality of ultrasonic probes 22A - 22D different in characteristics such as use frequency, resolving power or a use purpose are provided to a sensor block 20 and one of them, for example, the probe 22A is guided to the observing position of a sample 10 by rotating a holder 21 and the voids or cracks present at the specific plane position of the surface and interior of the sample are detected by ultrasonic beam. When the observation due to the probe 22A is completed, a pulse motor 32 is driven by the order of a controller 33 to rotate the holder 21 by 90 deg. and, for example, the lens of the separate probe 22D having different frequency is used to observe the sample 10. As mentioned above, since the probes 22A - 22D different in characteristics can be used while continuously changed over by rotating the block 20, image data different in resolving power are obtained at once and the labor of lens replacement can be omitted and effective measurement can be performed.

5. 发明专利

JPH02240563A ULTRASONIC PROBE 失效
公开(公告)号：JPH02240563A
公开(公告)日：1990-09-25
申请号：JP6119389
申请日：1989-03-14
申请人： HITACHI CONSTRUCTION MACHINERY , HITACHI LTD
发明人： HASHIMOTO HISANORI , TAMURA MORIO , HATANO KAZUYOSHI , SATO FUJIO , ICHIYANAGI TAKESHI , ISHIKAWA KIYOSHI , TANAKA KIYOSHI , KAWANUMA TAKAO , SATO KAZUO , TANAKA SHINJI
IPC分类号： G01N29/24 , H04R17/00
摘要： PURPOSE:To reduce the generation of noise, and also, to reduce the manufacturing cost by forming a peripheral part of the surface of a lens to an aspherical shape in which at least partially the curvature in the depth direction is smaller than the spherical surface of the center part. CONSTITUTION:An ultrasonic wave which travels straight from a piezoelectric film 2 forms a focus on an axis of the lens surface 5 in the center part 5A of the lens surface. On the other hand, in an aspherical part of a peripheral part 5B of the lens surfaces, since the curvature in the depth direction is smaller than the center part 5A at least partially, the ultrasonic wave tends to form a focus in a deeper position than the center part 5A. In this case, a reflected wave 13 returns to the lens surface 5, but it returns to the center part 5A since a reflecting point on the surface of a sample 10 is shifted from the axis of the lens surface 5, and a focal position is different from the peripheral part 5B, the propagation direction in a lens 1 does not become parallel to the axis of the lens surface 5, and does not reach the film 2. Accordingly, information by the peripheral part 5B decreases. That is, the aspherical shape of the peripheral part 5B executes a part of an edge and the generation of a noise is reduced, and also working of the edge becomes unnecessary, and the manufacturing cost can be reduced.

6. 发明专利

JPH01110296A GAS INJECTION IN HIGH PRESSURE LIQUID AND ITS DEVICE 失效
公开(公告)号：JPH01110296A
公开(公告)日：1989-04-26
申请号：JP26641087
申请日：1987-10-23
申请人： HITACHI LTD
发明人： ANAZAWA KAZUMI , ISHIKAWA KIYOSHI , AIZAWA KENJI , MATSUNOBU TAKASHI
IPC分类号： B01F3/04 , G21D3/08
摘要： PURPOSE:To perform trace quantity injection control by dissolving gas into liquid and injecting it in high pressure liquid. CONSTITUTION:Oxygen or hydrogen gas reduced by a pressure reducing valve 2 at a little higher pressure than that of a tubing 7 in a reactor primary cooling water system and the like in a high pressure water loop is introduced in a dissolving liquid producing tank 3 and gas quantity firstly determined by Henry's law is dissolved in demineralized water. The dissolved liquid is continuously injected in the tubing 7 of the high pressure loop from the tank 3 by gas pressure as flow is controlled by a flow regulating valve 4. Further, two gas bombs and dissolving producing tank 3 or more may as well be provided parallelly. Therefore, regulation of delicate gas concentration can be performed.

7. 发明专利

JPS6488334A METHOD AND DEVICE FOR TESTING ACTUAL MACHINE ARTIFICIAL PIPING 失效
公开(公告)号：JPS6488334A
公开(公告)日：1989-04-03
申请号：JP24705787
申请日：1987-09-30
申请人： HITACHI LTD
发明人： MATSUNOBU TAKASHI , SUEYOSHI NORIKIMI , ISHIKAWA KIYOSHI , AIZAWA KENJI , ANAZAWA KAZUMI
IPC分类号： G01N3/20 , G01N3/34
摘要： PURPOSE:To securely simulate the stress state of the piping of an actual machine by using a simple device by applying displacement to the support point of the artificial piping and simulating the actual machine. CONSTITUTION:Test piping which has cracking made by discharge working, etc., is fitted at a specific position of an artificial entrance pipe 11, and a boiler 15 is operated manually so as to obtain the same temperature and pressure with the operation state of a new type converter. In this state, high-temperature, high-pressure water is made to flow through a bias pipe 17. Then frame displacement data is extracted from a frame displacement directory and displacement is caused by a displacement adding mechanism 12 according to the data. Then solenoid valves 110 and 111 are opened to admit the high-temperature, high-pressure water in the pipe 11. In this state, the device is left as it is until the flow in the pipe 11 becomes stable and a solenoid valve 113 is closed to stop the flow of the high-temperature, high-pressure water to the pipe 17. In this state, a solenoid valve 112 is closed to quit the venting from the vent pipe 18 almost at the same time through the operation of a timer after input signals from void meters 50 and 51 decrease below a 50% void rate while the air in an artificial pressure pipe 13 is discharged.

8. 发明专利

JPS62189000A METHOD OF CUTTING CONTAMINATED PIPING AND DEVICE USING SAID METHOD 失效
公开(公告)号：JPS62189000A
公开(公告)日：1987-08-18
申请号：JP3026386
申请日：1986-02-14
申请人： HITACHI LTD
发明人： ANAZAWA KAZUMI , ISHIKAWA KIYOSHI , AIZAWA KENJI
IPC分类号： G21F9/30 , B23D21/00 , G21C19/02 , G21F9/00

9. 发明专利

JPS6280599A METHOD OF PROCESSING CONSTRUCTION OF RADIOACTIVE PIPING 失效
公开(公告)号：JPS6280599A
公开(公告)日：1987-04-14
申请号：JP22013985
申请日：1985-10-04
申请人： HITACHI LTD
发明人： ANAZAWA KAZUMI , ISHIKAWA KIYOSHI , AIZAWA KENJI , OYAMADA TSUGIO , MICHISHITA HIDENORI
IPC分类号： G21F9/30 , B09B1/00 , B09B3/00 , B09B5/00 , G21F9/00 , G21F9/36

10. 发明专利

JPS61280562A ULTRASONIC MICROSCOPE 失效
公开(公告)号：JPS61280562A
公开(公告)日：1986-12-11
申请号：JP14300486
申请日：1986-06-20
申请人： HITACHI LTD
发明人： KANDA HIROSHI , ISHIKAWA KIYOSHI
IPC分类号： G01N29/26 , G01N29/00 , G01N29/06
摘要： PURPOSE:To obtain a tomographic image having high resolving power and to enable image pickup systems of both of a B-mode and a C-mode, by using the mechanical scanning of a Z-axis as the scanning for the B-mode in place of an A-mode wave form at the time of the changing-over of a scanning axis. CONSTITUTION:The converged beam 200, generated at a part where a sensor 210 transmits and receives an ultrasonic wave, is allowed to irradiate the specimen 60 on a specimen stand 70 and reflected therefrom. When a stand 70 and the Y-scanning stage 230 of the whole of a voice coil exciter 270 are subjected to parallel advance motion in a Y-direction while the stand 70 is parallelly advanced to an X-direction by the reciprocal motion of the voice coil exciter 270, a C-mode ultrasonic microscope is realized. Further, the function for applying parallel advance motion to the Z-axis stage 220 of the sensor 210 in an up-and-down direction, a stage 245 for rotating the stage 230 and the whole of the exciter 270 around the center of the sensor 210 and stages 240, 250 for roughly moving a stepping motor and the whole to X- and Y-directions are provided. The sensor 210 and the stage 220 are parallelly advanced and moved to a Z-direction while the stand 70 is parallelly and reciprocally moved to X- and Y-directions to obtain a B-mode image.

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