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1. 发明专利

JPS6329112B2 失效
公开(公告)号：JPS6329112B2
公开(公告)日：1988-06-10
申请号：JP38581
申请日：1981-01-07
申请人： HITACHI LTD
发明人： KIMURA KATSUHIRO , ENDO AKIRA , TAKEZAKI JIRO
IPC分类号： F02B1/04 , F02B19/12 , F02P23/04

2. 发明专利

JPS60131306A MONITOR FOR TIRE INFLATION PRESSURE 失效
公开(公告)号：JPS60131306A
公开(公告)日：1985-07-13
申请号：JP23965483
申请日：1983-12-21
申请人： HITACHI LTD
发明人： KIMURA KATSUHIRO , SAKAGUCHI TATSUNORI , ENDOU AKIRA , SHIBATA TAKANORI
IPC分类号： B60C23/02 , B60C23/04 , G01L17/00
摘要： PURPOSE:To monitor whether tire internal pressure is right or not, by transmitting a tire internal pressure variation to a bellows pipe via a fine pipe from a central groove part on the circumference of a wheel, while constituting it so as to be displayed as a magnetic variation through a permanent magnet. CONSTITUTION:A pipe 3 is attached to a circumferential part of a steel wheel 2 and bent to the side of a brake drum 4 at the central vicinity of the wheel 2, connecting it to a bellows pipe 5, then a permanent magnet 6 of 1kG or so is locked thereto. And, a magnetic field variation detecting device 12 is set up in position opposed to the permanent magnet 6. In this constitution, when tire inflation pressure is normal, the bellows pipe 5 expands, coming close to the magnetic field variation detecting element 12 whereby a constant output is generated but when the tire inflation pressure decreases, the bellows pipe 5 is contracted, therefore output in the magnetic field variation detecting element 12 drops, thus a display or the like takes place via a car control circuit (unillustrated herein). With this constitution, anything unusual in the tire inflation pressure is detected, thus safety is well improvable.

3. 发明专利

JPS58140427A DETECTOR FOR UPPER DEAD POINT OF ENGINE 失效
公开(公告)号：JPS58140427A
公开(公告)日：1983-08-20
申请号：JP2112582
申请日：1982-02-15
申请人： HITACHI LTD
发明人： SEKINE KENJI , KANEKO YOUICHI , KIMURA KATSUHIRO
IPC分类号： F02P7/077 , F02D45/00 , F02P17/00 , G01B15/00 , G01M15/06
摘要： PURPOSE:To reliably detect the upper dead point of an engine, by a method wherein, in a detector for engine rotary angle, an oscillator, coupled with the space in a cylinder through a electromagnetic field, a discriminator positioned at the output side of the oscillator, and a differentiation circuit located at the output side of the discriminator are mounted. CONSTITUTION:A cavity resonator part consisting of a cylinder 1 of an engine and piston 2 is coupled to an oscillator 5 at an electromagnetic field through a coupling loop 4. A discriminator 6, converting a change in a frequency into a change in a voltage, is mounted to the output side of the oscillator 5, and a differentiation circuit 7 is installed to the output side of the discriminator 6. The output of the oscillator 5 and an output of a local oscillator 8 are simultaneously added to a mixer 9, and after they are amplified by an intermediate frequency amplifier 10, they are added to a discriminator 11. This permits the reliable detection of an upper dead point of an engine.

4. 发明专利

JPS57194371A DOPPLER RADAR TYPE VEHICLE SPEEDOMETER 失效
公开(公告)号：JPS57194371A
公开(公告)日：1982-11-29
申请号：JP7933881
申请日：1981-05-27
申请人： HITACHI LTD
发明人： ENDOU AKIRA , KIMURA KATSUHIRO
IPC分类号： G01S13/60
摘要： PURPOSE:To detect speeds with high accuracy by writing the frequency distributions of the pulse widths of the signals of Doppler pulses into a memory and detectong the pulse widths at the point half the value of the max. frequency thereof. CONSTITUTION:A Doppler pulse signal (fd) is inputted to an adder 15, is held in a buffer 16 and is stored in an RAM17. The output of the adder 15 is added with 1 which is the result of reading of the RAM17 by the next signal (fd), and it goes to a 2. The above-mentioned operations are repeated, and the pulse width of which the generation frequency out of the contents of the RAM 17 after counting (n) pulses of the signals (fd) is n/2 is read out with the clock of an oscillator 26. This is shaped with an FF22, and the gate circuit 27 of a counter 23 is opened during this pulse separation. This time component is held as the number of clocks of the oscillator 26. The data of the counters 23, 25 are compared of magnitudes in a comparator 24, when the values thereof coincide, the counter 25 is cleared and this clear signal is an output pulse (fd').

5. 发明专利

JPS57104843A MOISTURE MEASURING DEVICE 失效
公开(公告)号：JPS57104843A
公开(公告)日：1982-06-30
申请号：JP18044180
申请日：1980-12-22
申请人： HITACHI LTD
发明人： KIMURA KATSUHIRO , ENDOU AKIRA , USHIKU KENICHI , TOKUYAMA KEIICHI , MASUDA MITSUYASU
IPC分类号： G01N22/04
摘要： PURPOSE:To compensate a property change of an oscillation output due to a change with the passage of time and reduce a measurement error, by a method wherein a measurement property is changed based on a reception output when a microwave is propagated through a bypass waveguide. CONSTITUTION:Switch valves 11 and 12 are set as shown in a dashed line before moisture is measure, a microwave from an oscillator 12 is propagated to a bypass waveguide 13. And a measurement property is adjusted by changing a grain of an amplifier 9' so that a reception detection output of a receiver 7 coincides with a comparison reference value. Then, the switch valves 11 and 12 are restored to a solid line to propagate a microwave in a manner to bring an object 3 to be measured into contact with a coupling open part 5a. The damping amount of the microwave proportions a percentage of moisture content thereupon and the percentage of moisture content is indicated in a indicator 10. This permits the correction of a measurement property corresponding to an oscillation output and the correct measurement of moisture.

6. 发明专利

JPS56157134A ONE-BODY TYPE MICROWAVE TRANSMITTER AND RECEIVER 失效
公开(公告)号：JPS56157134A
公开(公告)日：1981-12-04
申请号：JP6058880
申请日：1980-05-09
申请人： HITACHI LTD
发明人： KIMURA KATSUHIRO , TOKUYAMA KEIICHI , MASUDA MITSUYASU , ENDOU AKIRA
IPC分类号： G01N22/04 , H04B1/40
摘要： PURPOSE:To enhance the stability to the variation of temperature, by installing a thermostatic heater and a temperature control lead switch at a part of a transmitter/ receiver. CONSTITUTION:A transmitter/receiver consisting of a Gunn oscillator 1 incorporating a Gunn diode 2 and a receiver 2 incorporating a wave detecting diode 9 is formed within a waveguide circuit and in a one-body structure. In order to enhance the stability of temperature for both the oscillator and the receiver formed in a body, a heater 16 to raise an overall temperature, a lead switch 17 to perform a temperature control plus a heater power source 18 are provided along with a heat retaining case 19 installed on the outside of the circuit.

7. 发明专利

JPS56104264A RADAR APPARATUS 失效
公开(公告)号：JPS56104264A
公开(公告)日：1981-08-19
申请号：JP678580
申请日：1980-01-25
申请人： HITACHI LTD
发明人： KIMURA KATSUHIRO , SEKINE KENJI , ENDOU AKIRA
IPC分类号： H01Q13/02 , G01S7/02 , G01S7/03 , G01S7/28
摘要： PURPOSE:To obtain a lightweight radar apparatus having excellent environment resistance and high reliability by constituting the case housing a circuit device and the like and which is unitary with an antenna horn by using a given dielectric material. CONSTITUTION:Secured to the case 1, which houses an accessory circuit 2, a transmission-reception module and the like and is unitary with a horn antenna 4, is a feeder hole dielectric 5 forming an airtight window and having a small high- frequency loss. The case 1 is molded from a dielectric material which is prepared by mixing a phenol resin or the like with a dielectric material, such as glass fiber, coated with a metal such as aluminum and which is highly effective in shielding high and low band wavelengths as well as of excellent workability. Accordingly, the radar apparatus can feacture light weight, excellent environment resistance, high reliability as well as a closed constitution. Also, as the dielectric material, a resin material mixed with metal powder can be used to obtain a similar result.

8. 发明专利

JPS5662406A MICROWAVE OSCILLATOR 失效
公开(公告)号：JPS5662406A
公开(公告)日：1981-05-28
申请号：JP13769079
申请日：1979-10-26
申请人： HITACHI LTD
发明人： KIMURA KATSUHIRO , ENDOU AKIRA , TOMITE TOSHIO , MOROZUMI HIROSHI
IPC分类号： H03B9/12 , H03B9/14 , H03L1/04
摘要： PURPOSE:To reduce the effect by temperature, by fitting an oscillating element to a heat sink having a flange part and to which a heater is fitted. CONSTITUTION:A semiconductor like a Gunn diode is fitted at almost the center part of a heat sink plate 12. The heat sink plate 12 is connected to a connection circuit 56 via a fitting flange 14 having a window at the center. Further, the heat sink plate 12 is provided with a metal block 16 made of a good heat conductor, to assure a heat capacity, and the metal block 16 is provided with a reed switch 42 which turns on and off with temperatures. A surface heater 44 is operated with the reed switch 42 to keep the temperature constant for the oscillating circuit covered with a thermal insulating member 54.

9. 发明专利

JPS55158652A FITTING STRUCTURE FOR ELEMENT 失效
公开(公告)号：JPS55158652A
公开(公告)日：1980-12-10
申请号：JP6621379
申请日：1979-05-30
申请人： HITACHI LTD
发明人： KIMURA KATSUHIRO , TOMITE TOSHIO , ENDOU AKIRA
IPC分类号： H01L21/68 , H01L23/12 , H01L23/13
摘要： PURPOSE:To fit an element by a mechanism wherein a concave portion is formed by mounting difference in a stage onto a metallic flat plate and the element is positioned highly accurate while using one side surface of a plane of the concave portion as the reference surface. CONSTITUTION:A plane portion 2 lower than the circumference and a plane portion 3 further lower than the portion 2 are molded at a central portion on the surface of a copper plate 1. The plane portion 2 functions as a fixing surface of a semiconductor element 5, and one side surface 2a is used as the reference surface which positions the element. One side surface of the plane portion 3 is employed as the reference surface which positions a ceramic substrate 4. According to this constitution, the element can be fitted easily and accurately.

10. 发明专利

JPS55148629A WALL MOUNT CONSTRUCTION OF ELECTRIC CIRCUIT DEVICE HOUSING CASE 失效
公开(公告)号：JPS55148629A
公开(公告)日：1980-11-19
申请号：JP5578879
申请日：1979-05-09
申请人： NISSAN MOTOR , HITACHI LTD
发明人： MATSUMURA AKIRA , KIMURA KATSUHIRO , SEKINE KENJI
IPC分类号： B60R11/00 , B60R11/02 , G01S7/02 , G01S7/03 , H05K5/06 , H05K7/00 , H05K7/02
摘要： PURPOSE:To reduce the manhour of hole punching work by inserting the projection part housing the connection cable into the wall hole while the case is fixed on the wall with a fixing screw or the like provided at the projection part. CONSTITUTION:The case body 16 partially composes the horn antenna 13 while is fixed to the case cover plate 18 through a rubber packing 17. Supporting the connection cable 6, the connection cable withdrawing part cylinder 19 of the case cover plate 18 is provided with a cylindrical rubber packing 21 to airseal the case 11. It is inserted into the hole 5 provided on the floor plate 2 from outside the car room and fixed on the floor plate 2 inside the room with a fixing nut 22. With such an arrangement, the withdrawal of the cable as well as the fixing of the case can be facilitated simply by providing only one mounting hole on the wall thereby reducing the manhour required for the work.

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