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1. 发明专利

JPS5997368A BEARING SEAL STRUCTURE 失效
公开(公告)号：JPS5997368A
公开(公告)日：1984-06-05
申请号：JP20580682
申请日：1982-11-22
申请人： TOKYO KEISO KK
发明人： KOIKE TATSUROU
IPC分类号： F16C33/82 , F16J15/43
摘要： PURPOSE:To prevent intrusion of moisture and dust while to seal a bearing rotatable with low torque by providing a magnet ring having N and S poles at both end faces in a boss around a rotary shaft then encapsulating magnetic fluid between said boss and the circumference of rotary shaft. CONSTITUTION:A magnet ring 21 having polarity is burried in a bearing boss 12a at the front face of case at the outside of bearing 9. Magnetic field is produced between said magnet 21 and magnetic rotor shaft 8 and upon injection of magnetic fluid 22, 23 between the rotor shaft 8 and boss 12a, fluid is collected along magnetic force line to seal the gap around the shaft with said fluids 22, 23. They are attracted continuously by magnetic force of said magnet 21 to never flow out to the outside to cause no resistance against rotation of shaft 8 and to block intrusion of moisture or dust.

2. 发明专利

JPS57201810A ROTATION DISPLACEMENT DETECTING DEVICE 失效
公开(公告)号：JPS57201810A
公开(公告)日：1982-12-10
申请号：JP8736981
申请日：1981-06-05
申请人： TOKYO KEISO KK
发明人： ABE MOMOKICHI , KOIKE TATSUROU
IPC分类号： G01D5/36 , G01D5/34
摘要： PURPOSE:To compensate the temperature characteristic and the secular change of optical constituting elements which give no disturbance to a system to be measured, by using two polarizing films, namely, a movable polarizing film and a fixed polarizing film. CONSTITUTION:Since the light from a light emitting diode 3 is polarized by a movable polarizing film 2 and is polarized furthermore by a fixed polarizing film 5, the quantity of light incident to a photodiode 4 for detection is dependent upon the relative angle between films 2 and 5 and shows a change approximate to a sine curve of period 180 deg.. A part of this curve where the quantity of incident light is changed most linearly for the rotation angle of the film 2, is selected to obtain a voltage approximately proportional to the rotation displacement as a detection voltage V.

3. 发明专利

JPS60135745A SPECIFIC GRAVITY METER 失效
公开(公告)号：JPS60135745A
公开(公告)日：1985-07-19
申请号：JP24859483
申请日：1983-12-23
申请人： TOKYO KEISO KK
发明人： KOIKE TATSUROU
IPC分类号： G01N9/16 , G01N9/20
摘要： PURPOSE:To make measurement simple and exact by providing a horizontal rotating body having two objects which are different in volume and face each other on the right and left and a means for detecting the moment of the rotating body by a difference in the buoyancy acting on the objects in a liquid. CONSTITUTION:Objects 15, 17 which are freely vertically movable move vertically according to the specific gravity of a fluid 21. Since the object 15 contains an iron piece 16, the movement is detected by a coil 14 for a differential transformer. A magnet 19 is contained in the object 17. An electromagnet 18 is feedback-controlled by the output from the coil 14, by which the electromagnetic force of the electromagnet 18 is changed and the object 17 is held horizontally. The force acting between the magnet 19 and the electromagnet 18 is therefore proportional to the specific gravity of the fluid and since said force is proportional to the value of the current to be passed to the electromagnet 18, the specific gravity is measured by measuring the current value.

4. 发明专利

JPS59102112A Digital converter device for rotary angle 失效
标题翻译：旋转角数字转换器
公开(公告)号：JPS59102112A
公开(公告)日：1984-06-13
申请号：JP21286982
申请日：1982-12-03
申请人： Tokyo Keiso Kk
发明人： KOIKE TATSUROU
IPC分类号： G01D5/36 , G01B11/26 , G01F23/30 , G01F23/44
CPC分类号： G01F23/446
摘要： PURPOSE:To improve explosion proof property in a dangerous region, by connecting a symbol plate and photoelectric conversion elements by optical fibers in a liquid level meter and the like. CONSTITUTION:A symbol plate 6 is attached to a central shaft 7, which is coaxially rotated with a rotary output shaft 5 of a liquid level meter 4. A pattern, wherein mirror surface parts 8 and light absorbing parts 9 are radially provided at an equal interval, is provided on the surface of the sign plate 6. Light beams are projected on the surface of the sign plate from a pair of optical fibers 10 and 11. The reflected light beams from the mirror surface parts 8 are transmitted to photoelectric conversion elements 16a and 16b from the other ends of the optical fibers. Prisms 12 and 13 are attached to the other ends of the optical fibers 10 and 11 in this case. Emitted light beams from light sources 14 and 15 are introduced. The positions of the light projecting ends of the fibers are shifted by the half width of the pattern of the mirror surface part 8 or the light absorbing part 9.
摘要翻译：目的：通过液位计等中的光纤连接符号板和光电转换元件，提高危险区域的防爆性能。构成：符号板6安装在与液位计4的旋转输出轴5同轴旋转的中心轴7上。其中镜面部分8和光吸收部分9径向设置在相等的位置上的图案间隔设置在标志板6的表面上。光束从一对光纤10和11投射在符号板的表面上。来自镜面部分8的反射光束被传输到光电转换元件 16a和16b从光纤的另一端。在这种情况下，棱镜12和13附接到光纤10和11的另一端。引入来自光源14和15的发射光束。纤维的光投射端的位置偏移了镜面部8或光吸收部9的图案的半宽。

5. 发明专利

JPS5995422A DETECTOR OF ROTARY DISPLACEMENT 失效
公开(公告)号：JPS5995422A
公开(公告)日：1984-06-01
申请号：JP20580482
申请日：1982-11-22
申请人： TOKYO KEISO KK
发明人： KOIKE TATSUROU
IPC分类号： G01D5/24 , G01B7/30 , G01D5/241
摘要： PURPOSE:To obtain an output which is stable with a change in temp. without disturbing a system to be measured by providing the 1st and the 2nd immobile stators and a rotor, connecting a power source to both electrodes of the 1st stator and connecting an output detector to both electrodes of the 2nd stator. CONSTITUTION:The 1st and the 2nd stators 1, 2 consisting of an insulating material are fixed in parallel apart an insulating distance from each other. Two sheets of electrodes 4, 5 each of which is formed of a conductor having a semicircular shape and which are connected to an AC voltage power source are pasted on the inside surface of the 1st stator 1 in such a way that the mutual chord parts 4a, 5a face to each other in parallel apart an insulating distance. On the other hand, two sheets of electrodes 7, 8 each of which is formed of a conductor having a semicircular shape and which are positioned across a load impedance 6 are pasted on the inside surface of the 2nd stator 2 in such a way that the mutual chord parts 7a, 8a face to each other in parallel apart from an insulating distance. The 1st and the 2nd stators are fixed with a deviation in phase by 90 deg. so that the electrodes pasted on the inside surfaces of both stators face to each other and that the respctive chord parts 4a, 7a (or 5a, 8a) are right angled to each other.

6. 发明专利

JPS5995423A DETECTOR OF ROTARY DISPLACEMENT 失效
公开(公告)号：JPS5995423A
公开(公告)日：1984-06-01
申请号：JP20580582
申请日：1982-11-22
申请人： TOKYO KEISO KK
发明人： KOIKE TATSUROU
IPC分类号： G01P3/483 , G01B7/30 , G01D5/24 , G01D5/241
摘要： PURPOSE:To provide a detector which requires less torque for a revolving shaft, has good linearity and maintains stable parallelism between a rotor and a stator without requiring any special linearizing mechanism by having the rotor and the stator, providing electrodes for impressing voltage on the stator near the outside edge thereof and electrodes for drawing out voltage on the stator near the inside edge thereof, and disposing the electrodes for impressing voltage and the electrodes for drawing out voltage. CONSTITUTION:A rotor 1 is a conductor consisting of two sheets of the same sector plates 1a, 1b which have the same center and 90 deg. central angle and are disposed symmetrically. The shaft 2 of the rotor 1 penetrates in the central part of an immobile stator 3. The stator 3 is provided with electrodes 3a, 3b for impressing voltage which are bisected to a toric shape on a base plate 4 near the outside edge thereof. The stator is also provided with electrodes 3c, 3d for drawing out voltage which are bisected to a toric shape on the base plate near the inside edge thereof. Both electrodes are so disposed that the parting line of the electrodes 3a, 3b intersects orthogonally with the parting line of the electrodes 3c, 3d.

7. 发明专利

JPS5995421A DETECTOR OF ROTARY DISPLACEMENT 失效
公开(公告)号：JPS5995421A
公开(公告)日：1984-06-01
申请号：JP20580382
申请日：1982-11-22
申请人： TOKYO KEISO KK
发明人： KOIKE TATSUROU
IPC分类号： G01D5/24 , G01B7/30 , G01D5/241
摘要： PURPOSE:To obtain an output which is stable with a change in temp. without disturbing a system to be measured by providing the 1st and the 2nd immobile stators and an insulating rotor, and constituting four capacitors of the opposed electrodes of the 1st and the 2nd stators. CONSTITUTION:The 1st and the 2nd stators 1, 2 consisting of an insulating material are fixed in parallel apart at an insulating distance from each other. Four sheets of sectorial electrodes quadrisected from a circle are pasted on the one surface of each stator. Electrodes 3 and 3 , electrodes 4 and 4 , electrodes 5 and 5 , electrodes 6 and 6 are positioned opposite to each other in parallel, and four pieces of capacitors are constituted of four sets of such electrodes. The electrodes 3 and 4, electrodes 5 and 6, electrodes 3 and 6 and electrodes 4 and 5 are respectively connected to each other and a bridge circuit is constituted by these four capacitors. The bridge circuit is so constructed that a high frequency voltage Ein is impressed on the connections (a), (c) and the voltage generated between the connections (b) and (d) is outputted as an output voltage Eout to a differential amplifier, etc.

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