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21. 发明专利

JPH11337542A CAPILLARY COLUMN WITH BUILT-IN THERMAL CONDUCTIVITY DETECTOR AND ITS MANUFACTURE 失效
公开(公告)号：JPH11337542A
公开(公告)日：1999-12-10
申请号：JP14245598
申请日：1998-05-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IIHASHI SHINSUKE , SUGIMOTO IWAO , KATO TADASHI
IPC分类号： G01N30/60 , G01N30/66
摘要： PROBLEM TO BE SOLVED: To enable a capillary column to suppress the decline of separability of a gas chromatograph by forming a structure in which the flow rate of a carrier gas and a sample material included in the carrier gas does not decline, without requiring a conventional make-up method for preventing the decline of the gas flow rate of the sample material. SOLUTION: In this capillary column, a capillary column part for separation, composed of a groove 3 in which a stationary phase as a gas passage of sample material is installed, is formed by using a pair of boards 1, 2. A thermal conductivity detector part is formed by arranging a filament or a thermistor 4, so that it will contact with the gas which is the sample material passing through the groove 3. A sectional area of the groove 3 of the detector part is set to be equal to a sectional area of the groove 3 of the capillary column part, or the sectional area of the groove 3 of the detector part is set not to be larger than the sectional area of the groove 3 of the capillary column part.

22. 发明专利

JPH11167419A TACTILE FORCE SHOWING METHOD AND ITS DEVICE 失效
公开(公告)号：JPH11167419A
公开(公告)日：1999-06-22
申请号：JP33176597
申请日：1997-12-02
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： WATANABE TOSHIO , KATO TADASHI
IPC分类号： B25J3/00 , G05D15/01
摘要： PROBLEM TO BE SOLVED: To execute a fine work without interrupting the free operation of an operator, to operate at high speed by making the capacity to the absolute minimum and to improve the response. SOLUTION: This device is provided with a gauntlet 2 and a mechanism 7 filling and supplying compressible fluid 4 to vacant chambers 3 provided in the gauntlet 2 and passively giving tactile force to the hand through the use of the reaction to the operation of the finger. The vacant chambers 3 are formed by jointing flexible members 10 to the glove 2 corresponding to joints of the hand. The mechanism 7 is provided with tubes 11 connected to the respective vacant chambers 3, pumps 12 supplying compressed fluid 4 to the vacant rooms 3 in synchronizing with the movement of the nodes and a controller 13 controlling the pumps 12. When the compressible fluid 4 is charged into the vacant chambers 3 to make pressure high, the operator receives large reaction force at the time bending the nodes since large force is required for changing the form. Thus, the operator receives feeling as if he operates himself with a touch such as the actual grasping of an object although he does not actually touch the object.

23. 发明专利

JPH03120406A OPTICAL TUBE INTERNAL DIAMETER MEASURING INSTRUMENT 失效
公开(公告)号：JPH03120406A
公开(公告)日：1991-05-22
申请号：JP25859789
申请日：1989-10-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIMURA TSUTOMU , KATO TADASHI , FUNAKOSHI NORIHIRO
IPC分类号： G01B11/12
摘要： PURPOSE:To easily perform inspection in a tube and measure its internal diame ter by irradiating the internal wall of the tube with a light beam, guiding the scattered light into a photodetector which has plural photodetecting elements through a condenser lens, and specifying the generation position of the scattered light according to light intensity values detected by the respective elements. CONSTITUTION:Laser light emitted by a semiconductor laser 11 is bent by 90 deg. through a reflecting mirror 21 to irradiate the wall surface in the tube 10 almost perpendicularly. The laser light irradiating the inside of the tube 10 is reflected by its wall surface and part of the scattered light is reaches a two-divided concentric photodetecting element 27 through the condenser lens 25. The outputs of the respective detecting elements of the element 27 are sent out to a condenser lens movement quantity detection part 29. The detection part 29 detects the quantity of vertical movement of the condenser lens when the difference between the two light intensity values becomes zero and feeds a corresponding control signal back to a driving part 31. The driving part 31 moves the condenser lens 25 to a position corresponding to the control signal. The internal diameter of the tube 10 can be found from the control signal sent out of the detection part 29 to the driving part 31.

24. 发明专利

JPH03103753A COLOR IN-TUBE INSPECTING DEVICE 失效
公开(公告)号：JPH03103753A
公开(公告)日：1991-04-30
申请号：JP24251689
申请日：1989-09-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： NISHIMURA TSUTOMU , KATO TADASHI , FUNAKOSHI NORIHIRO
IPC分类号： G01B11/30 , G01N21/88 , G01N21/954
摘要： PURPOSE:To reduce the size, weight, and power consumption of the inspecting device by converting LED light beams of the primary colors on the surface of the internal wall of a tube and detecting intensity distributions of reflected light beams of the respective LED light beams which are reflected by the internal wall as rotary motion is carried out. CONSTITUTION:The respective light beams of the primary colors, i.e. red, green, and blue emitted by LEDs 21 - 23 of a light source part 20 are converged on one point on the internal surface of the steel pipe 10 through a movable beam scanning part 30. The scanning part 30 scans the internal wall of the steel pipe 10 through its rotary motion. A fixed photodetection part 10 detects the quantity of reflected light which is incident from the internal wall of the steel pipe 10 and outputs its intensity distribution as defect information on the inter nal wall of the steel pipe 10. The color in-tube inspecting device of this constitu tion is movable in the steel pipe 10 and mounted on, for example, a self-runing robot to gather reflection factor information on the internal wall of the steel pipe 10. Therefore, the device can operates with a small amount of electric power, so only the electric power of a secondary battery is required.

25. 发明专利

JPH01191310A MAGNETIC HEAD 失效
公开(公告)号：JPH01191310A
公开(公告)日：1989-08-01
申请号：JP1369188
申请日：1988-01-26
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KOSHIMOTO YASUHIRO , KATO TADASHI , KISHIGAMI JUNICHI
IPC分类号： G11B5/11 , G11B5/187
摘要： PURPOSE:To cause the distribution of a magnetic field, which is impressed to a recording medium, to be sharp by providing a shield film, which is composed of a second kind superconductor, on a surface to face to the magnetic recording medium. CONSTITUTION:A magnetic head 20 is composed of magnetic poles 21 and 22, which are composed of a high permeability magnetic material, a gap 23 of a nonmagnetic material, a coil 24 to be wound to a magnetic circuit part and a shield film 25 to be arranged on a surface to face to the magnetic recording medium of the magnetic poles 21 and 22. The shield film 25 is formed by the second type superconductor, whose lower part critical magnetic field has the same degree of the coercive force of the magnetic recording and reproducing medium. Accordingly, by the second kind superconductor to be provided on the surface to face to the magnetic recording and reproducing medium, a weak magnetic field part in the bottom of the magnetic field to leak from the magnetic head is shielded. Thus, only the magnetic field to be equivalently strong is localized and the sharp distribution of the magnetic field can be obtained.

26. 发明专利

JPS63311603A HIGH SPEED EQUALIZING METHOD FOR DIGITAL MAGNETIC RECORDING CURRENT 失效
公开(公告)号：JPS63311603A
公开(公告)日：1988-12-20
申请号：JP14711787
申请日：1987-06-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KATO TADASHI , ARAI KYOICHI , TAKANAMI SHUICHI
IPC分类号： G11B5/09
摘要： PURPOSE:To attain high speed inversion of a recording current by utilizing a high through-rate at the leading of a recording current due to an excess current or a high through-rate of leading of recording current due to insufficient damping in addition to the former high through-rate. CONSTITUTION:A current i0=i1+i2 flowing to a head system is changed result ingly by using a control pulse so as to switch plural differential current switches 14, 17, 22, 25. Actually, in recording data, the current i0 is set to be an optimum recording current depending on the head receiving the current and the character istic of the medium. The high through-rate of the leading of current due to excess current of insufficient damping is utilized in this way, then the vibrating current component or excess current component caused at that time is canceled completely by selecting an equalizing parameter properly, and the proper rectan gular recording current waveform is obtained while the high through-rate at leading is being kept. Thus, the high recording current inverting speed is attained.

27. 发明专利

JPS63282905A WAVEFORM EQUALIZER FOR PERPENDICULAR MAGNETIC RECORDING AND REPRODUCING 失效
公开(公告)号：JPS63282905A
公开(公告)日：1988-11-18
申请号：JP11817787
申请日：1987-05-15
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： KATO TADASHI , ARAI KYOICHI , TAKANAMI SHUICHI
IPC分类号： G11B5/09
摘要： PURPOSE:To equalize a waveform with a simple constitution by differentially amplifying an input signal, obtaining two output waveforms whose polarities are inverted, differentiating one, attenuating the other and giving it to a differential amplifier. CONSTITUTION:A head output waveform is amplified by a differential amplifier 11 and two output waveforms whose polarities are inverted are obtained. The one output out of the two is differentiated by a differentiator 12 and after a main pulse, comes to be a waveform to have a sub pulse. The other output of the amplifier 11 is attenuated by a gain adjusting circuit 13. With this attenuated pulse, by adjusting an attenuation coefficient so that the sub pulse of the inverted polarity, after the main pulse, can be canceled, the output of the differential amplifier 14 to input the outputs of the differentiator 12 and an attenuator 13 is equalized to a single pulse to have a satisfactory symmetry. Thus, with a simple constitution, an asymmetrical dipulse waveform is equalized to the single pulse and a peak shift due to a waveform interference can be reduced.

28. 发明专利

JPS62192007A METHOD AND DEVICE FOR EQUALIZING RISE-UP WAVEFORM OF RECORDING CURRENT 失效
公开(公告)号：JPS62192007A
公开(公告)日：1987-08-22
申请号：JP3344486
申请日：1986-02-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKANAMI SHUICHI , KATO TADASHI , ARAI KYOICHI
IPC分类号： G11B5/09
摘要： PURPOSE:To make the rise time of a recording current into a high speed by supplying a current in the reverse direction of the direction of the current regulated only for a fixed time after the lapse of a regulated time when the current supplied to a magnetic head is switched. CONSTITUTION:For a time from the time when a transistor 2 is turned on with a data signal QD to a time t0 after the lapse of a time td, a transistor 7 is turned on with a control signal QC1. In this way, the oscillation of an underdamping transient current accompanied by the turning on of the transistor 2 is negated, and a rectangular transient current if-ir that is not oscillatory can be obtained in a state where the transient time of an underdamping current is kept in a short time.

29. 发明专利

JPH11262620A PRODUCTION OF DRY AIR AND APPARATUS THEREFOR 失效
公开(公告)号：JPH11262620A
公开(公告)日：1999-09-28
申请号：JP6819198
申请日：1998-03-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUGIMOTO IWAO , OGAWA SHIGEKI , KATO TADASHI , NAKAMURA MASAYUKI , KASAI NAHOKO , IIHASHI SHINSUKE
IPC分类号： B01D53/22 , B01D53/26 , B01D63/02 , B01D69/08 , B01D71/70
摘要： PROBLEM TO BE SOLVED: To enable continuous and semipermanent maintenance-free supply of clean dry air by selectively discharging the steam included in the air flowing in hollow fibers consisting of a polysiloxane high-polymer material to the outer peripheries of the hollow fibers from this air by a vacuum pump and dehumidifying the air. SOLUTION: About 2,000 pieces of the tubular hollow fibers 2 made from dimethyl siloxane as stock are put into a dehumidification module 1 consisting of polyether ketone. These hollow fibers 2 are formed by collecting both end ports of the hollow fibers 2 into an air supply port 3 and air discharge part 4 disposed at both end faces of a container 1A and sealing and fixing these end ports by hermetic members 1B and 1C. The flank of a closed space formed by the container 1A and the hermetic members 1B and 1C is provided with a vacuum pump connection port 5, to which a vacuum pump 6 for dehumidification is connected. This vacuum pump 6 for dehumidification is driven the reduce the air pressure in the closed space, by which the steam is selectively discharged to the outer peripheries of the hollow fibers 2 from the air flowing in the hollow fibers 2. The dry air is thus obtd.

30. 发明专利

JPH1090251A WATER QUALITY MEASURING DEVICE 失效
公开(公告)号：JPH1090251A
公开(公告)日：1998-04-10
申请号：JP24603896
申请日：1996-09-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YASUDA KYOSUKE , KATO TADASHI
IPC分类号： G01N33/18
摘要： PROBLEM TO BE SOLVED: To easily confirm the position of a vessel and quickly and easily search the vessel when it is washed away by arranging, on the outer surface of the vessel, plural kinds of phosphorescent layers or fluorescent layers independently emitting light with mutually different colors as recognizing elements. SOLUTION: A cylindrical vessel 1 containing a water quality measuring circuit is formed by screwing a base screw 4b formed on the inner surface 4a upper end part of a protecting cover 4 to a screw 1b provided on the lower end part of its outer surface 1a to install the protecting cover 4 having a plurality of water passing slits 4c thereto. On the outer surface of the vessel 1, recognizing elements independently emitting lights with mutually different colors, which are, for example, formed of two kinds of phosphorescent layers or fluorescent 5a, 5b, are arranged. Since the position of the vessel 1 in water can be thus precisely recognized, the measurement by a measuring device can be precisely and easily performed. When an anchor cable is cut to wash away the vessel 1, it can be quickly and easily searched.

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