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JP56030621 |
PURPOSE: To obtain a correct measured value by providing successively the third, second and first grids and a filament concentrically with an ion collector, imparting an intermediate potential between the first and third grids and a pote...
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JP56018752 |
PURPOSE: To efficiently drive a sensor having an electric heater of a small thermal time constant by making the oscillator output an intermittent pulse to heat the electric heater, and detecting the sensor output within the heating time ...
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JP56011332 |
PURPOSE: To make control possible even for rapid change of the degree of vacuum by providing electronic current control electrode between the hot cathode and the grid to control the electronic current from the hot cathode. CONSTITUTION: ...
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JP55156825 |
PURPOSE: To eliminate the electric noise by modulating the electronic current of the measuring ball of the vacuum gauge and at the same time giving detection to the ion current extraced out of the ion collector and then amplified in sync...
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JP55124533 |
PURPOSE: To enable an extremely short period of high frequency discharge to effect measuring of vacuum degree of containers even left for a long period of time by applying in advance high frequency voltage to sealed vacuum container made...
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JP55117937 |
PURPOSE: To make it possible to measure vacuum in a short time by increasing a filament current in a high speed until the filament current reaches a current value where gas generation from the filament starts and by increasing the filame...
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JP55089728 |
PURPOSE: To obtain the vacuum meter of small size and high sensitivity which has less does of soft X-rays received with the ion collector, by locating the cathode outside the anode formed in spherical surface and locating the tip of the ...
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JP55086047 |
PURPOSE: To make inverse magnetron discharge persist in without being affected by the direction of a magnetic field by shaping the potential of discharge space into spherical symmetry. CONSTITUTION: The anode 1 is spherical and is fixed ...
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JP55086048 |
PURPOSE: To stably keep a magnetron discharge in a magnetic-field which changes its direction and strength, and perform the magnetron discharge which will not be influenced by magnetic-field variation of discharge current. CONSTITUTION: ...
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JP55080030 |
PURPOSE: To improve the precision and to expand the measurable area by eliminating the influence of atmospheric temperature by providing a temperature compensating circuit that compensates the output variation caused by a change of the a...
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JP55074434 |
PURPOSE: To simply detect the pressure drop of inert gases hermetically sealed in a vessel under high pressure, by utilizing a discharge phenomenon. CONSTITUTION: Two needle-shaped electrodes for discharge 5a, 5b are oppositely positione...
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JP55074038 |
PURPOSE: To only measure an ion current value periodically varying, and heighten a precision of measurement, by periodically interrupting an electron current in a square wave pattern, and neutralizing a change of each electrode voltage n...
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JP55054425 |
PURPOSE: To obtain a detector which provides accurate detection of gas pressure by inspecting an ionizable component by flowing an ion current by applying a voltage between electrodes arranged by ionizing gas irradiated with radiation. C...
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JP55046144 |
PURPOSE: To enable to extend the pressure measuring range of cold cathode discharge type vacuum meter to higher vacuum and to enable to measure the vacuum under strong magnetic field such as the plasma enclosing unit by using this magnet...
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JP55040920 |
PURPOSE: To prevent the deficiency in the pressure gauge, by providing the three- way electromagnetic valve connected to the outlet port at the pressure introduction section of a vacuum measuring pressure gauge to always keep the section...
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JP54147085 |
PURPOSE: To enable measurement under the same conditions in a wide range of measurements, by forming the discharge current in pulses by means of discharge detection circuit, when measuring the degree of vacuum from the peak value of the ...
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JP54130172 |
PURPOSE: To prevent accident due to malfunction of sequence, by actuating the control circuit of valve to close the valve when the filament of Pirani tube is broken. CONSTITUTION: If a filament F1 of a Pirani tube 1 is broken while the v...
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JP54128386 |
PURPOSE: To discharge stably and measure the degree of vacuum correctly, by furnishing the discharge type vacuum measuring apparatus with current-voltage converting circuit, voltage holding circuit, integrating circuit, and display contr...
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JP54104885 |
PURPOSE: To isolate the abnormal protective unit and prevent propagation of accident by performing usual and emergency exhaust operations, by detecting an abnormal pressure location from output signals of pressure gauge and differential ...
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JP54100521 |
PURPOSE: To improve the reliability and simplify the construction of a pipe coupling, by combining an O-ring type packing with a cup-spring type lock ring. CONSTITUTION: A conical packing box 21 of a pipe coupling 2 is fitted with an O-r...
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JP54099218 |
PURPOSE: To prevent the damage of a connecting joint by using a supporting fixture to form the inserting margin of an inserting pipe and to release the support against an excess load as a buffer for permitting the inserting of an inserti...
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JP54034282 |
PURPOSE: To prevent discharge start delay of a quick discharge system by using pulses having high voltage portion for discharge acceleration at the initial portion of the output pulses and has a lower and stable high voltage portion than...
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JP54034281 |
PURPOSE: To let the vacuum degree measuring apparatus be the easy-to-use and accurate apparatus by obviating the appearance of discontinuous changes of discharge current with respect to continuous change of pressure, i.e., discontinuous ...
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JP54034283 |
PURPOSE: To expand measurable range without imparing the advantages of a quick discharge system by respectively protrusively providing a small protrusion facing to discharge space to one of cathode plates and a large protrusion facing to...
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JP54021794 |
PURPOSE: To readily perform total inspection in production process by inspecting the deaerating condition of the inside of a bottle case in the evaporating state of heating medium of the case when the heating medium on the bottle case is...
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JP53125881 |
PURPOSE: To accomplish the correct automatic measurement of vacuum in a noncontact manner by detecting the current to a high frequency circuit which is varied in accordance with the vacuum when the high frequency discharge to a container...
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JP53116556 |
PURPOSE: To simply discriminate the quality of a heat pipe roll by giving a movement from outside to the heat medium liquid sealed in the heat pipe roll, detecting a sound which occurred and measuring the degree of vacuum in the internal...
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JP53081176 |
PURPOSE: To perform non-destructive and contactless measurement of the degrees of vacuum with sufficient reliability by applying a strong electric field to the vacuum system to be measured and measuring the potential of the potential det...
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JP53027083 |
PURPOSE: To make possible measurement of pressure of active gas covering wide range with good reproducibily, by arbitrarily selecting metallic plate target which is rotated from outside, and to which metallic plates of silicon, titanium,...
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JP53000174 |
PURPOSE: To try to minimize the size of measuring element by dividing ring type permanent magnet, which is attached to outside periphery of pressure detecting electrode, into plural pieces.
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JP52133271 |
PURPOSE: To measure pressures below the atmospheric pressure with accuracy and high dependability by containing a piezo resistance-effect element and a beam in an air-tight chamber partitioned by a pressure-receiving plate.
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JP52127283 |
PURPOSE: To decide with facility whether or not a vacuum bulb is good, by eliminating from a current flowing into a defective vacuum detector the component that comes there by way of a stop line side earth electrostatic capacitance of th...
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JP52093382 |
PURPOSE: To maintain an applied voltage at a constant level all the time so that a high precision measurement of vacuum degree may be achieved by means of the pusle discharge-type vacuum degree measuring device.
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JP52092766 |
PURPOSE: To remove causes of occurrence of leakage and improve reliability, by coupling presusre detecting leectrode to electrode fixing end plate by means of coupling member, which does not extend through the end plate.
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JP52058590 |
PURPOSE: To accurately measure the number of ions in vacuum by absorbing the ions or electrons generated within ion gauge for measuring the degree of vacuum with the mesh applied with voltage.
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JP52055575 |
PURPOSE: An arreasting part for arresting charge particles produced by the discharge between both electrodes is provided to a vacuum degree measuring element having a pair of vacuum pressure detecting electrodes, whereby the degradation ...
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JP52045378 |
PURPOSE: To mutually connect two vacuum valves as a pair on the end plate side where there are pressure detecting elements, and connecting the detecting elements integrally to a detecting circuit consisting of an impedance coupler and pr...
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JP52030481 |
PURPOSE: To make possible the measurement of the pressure of condensible steam at high sensitivity reliability irrespective of the kinds and the composition of gas.
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JP52026259 |
PURPOSE: To detect and display the degree of vacuum by means of the current flow of an ion pump, and also to facilitate automatic functoning of the elements of the system in which the ion pump is operating.
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JP52023979 |
PURPOSE: To measure activated gas over a wide range of degree of vacuum in order to permit measurement of degree of vacuum at good reproducibility.
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JP52015381 |
PURPOSE: Offer low-cost, high performance equipment by conduction connecting one end of vacuum pressure detection element to vacuum value and connecting two voltage assignment elements selected from a resistor, inductance or capacitance ...
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JP52007783 |
PURPOSE: To find out the deterioration of the vacuum condition by detecting the rising temperature of electrodes transferred to the metal shield arranged around the electrodes.
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JP51113772 |
PURPOSE: In order to reduce the delay due to the change in discharging time, by way of preventing the change of quality and consumption of the cathode (or trigger electrode) which emits the elctrron.
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