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4931件专利文献

【发明专利】 Improvements in or relating to pressure measuring apparatus

申请号:GB615859 申请日:1970-08-16
公开/公告号:GB892493A 公开/公告日:1970-08-16
申请人:MANFRED MATHIAS DUNKEL 发明人:无
代理人: 分类号:
机构代理:
显示摘要
892,493. Measuring electrically. DUNKEL, M. M., [trading as LEYBOLD'S NACHFOLGER, E.]. Feb. 23, 1959 [Feb. 22, 1958], No. 6158/59. Class 40 (1). In a heat conduction manometer comprising one or more temperature-sensitive measuring elements, e.g. resistors or thermocouples, and one or more apertured or bifurcated oscillating members operable to induce a flow of the gas whose pressure is to be measured around or past the measuring elemen(s), the temperature of the measuring element(s) is maintained constant and the heating power necessary to achieve this is measured. In Fig. 1, a leafspring 5 of ferromagnetic material is oscillated by an iron-cored solenoid 2 supplied with voltage- and frequency-stabilized A.C. to create a flow of the test medium around a semi-conductor bead 6 located within an aperture 51 in the leaf-spring; alternatively, the spring may be bifurcated about the bead. The bead is connected to a measuring device 14 comprising a bridge circuit the output of which controls the heating current to the bead and actuates a meter 15 to give an indication of the test pressure. In a modification, two oscillating leaf-springs and two semi-conductor beads are used. The leaf-spring(s) may be oscillated by electrostatic, piezo-electric or mechanical drive, and the measuring element(s) may be fixed to the spring(s) for oscillation therewith. The amplitude and/or frequency of oscillation of the spring(s) may be kept constant or varied, for example, in dependence on the current being measured; electrical or mechanical compensation may be provided to off-set the effect of unwanted variations of oscillation amplitude. The manometer may also contain an ordinary heat conduction measuring element.

【发明专利】 Improvements in or relating to thermo-couples

申请号:GB2579756 申请日:1970-08-15
公开/公告号:GB804217A 公开/公告日:1970-08-15
申请人:SIEMENS AG 发明人:无
代理人: 分类号:
机构代理:
显示摘要
804,217. Thermoelectric devices. SIEMENS-SCHUCKERTWERKE A.G. Aug. 23, 1956 [Sept. 2, 1955], No. 25797/56. Class 37. [Also in Group XXII] In a process for producing a thermocouple, especially one used for the generation of cold, the thermoelectric elements are soldered in a non-oxidizing atmosphere under the action of ultrasonic vibrations, to provide low contact resistance between the elements, thus increasing the cold developed. The atmosphere, which is preferably flowing, may be carbon dioxide, nitrogen, helium, argon, or preferably a reducing atmosphere of, or containing, hydrogen. The process is particularly suitable when the thermoelectric elements are semi-conductors, especially of the extrinsic type, and is applicable to the production of a thermocouple in which a conductor, e.g. copper sheet, is soldered between the elements. Suitable solders are tin solders, indium alloys of low m.p., pure indium and pure bismuth.

【发明专利】 TWO-DIMENSIONAL DETECTOR FOR LIGHT OR RADIATION

申请号:JP2004074233 申请日:1970-08-21
公开/公告号:JP2005268271A 公开/公告日:1970-08-21
申请人:SHIMADZU CORP 发明人:YOSHIMUTA TOSHINORI
代理人: 分类号:G01T1/24
机构代理:
显示摘要

PROBLEM TO BE SOLVED: To provide a two-dimensional detector for light or radiation in which influence of static electricity can be suppressed.

SOLUTION: A conductive plate 21 is stacked on the surface of an insulating film 7 for sealing an applying electrode 3 on the incident side of radiation or light and grounded. With such an arrangement, static electricity being generated in the range facing the applying electrode 3 can be discharged on the incident side surface of the insulating film 7. Discharge of static electricity is thereby prevented and superposition of noise onto charge information being converted from radiation or light by a semiconductor thick film 1 can be suppressed. Consequently, influence of static electricity is suppressed and an active matrix substrate 5 can read out charge information.

COPYRIGHT: (C)2005,JPO&NCIPI

【发明专利】 IMPROVEMENTS IN OR RELATING TO DISTANCE MEASURING SYSTEMS

申请号:GB5084268 申请日:1970-08-17
公开/公告号:GB1248211A 公开/公告日:1970-08-17
申请人:THOMSON CSF 发明人:无
代理人: 分类号:
机构代理:
显示摘要
1,248,211. Wave-energy distance measuring; automatic phase control. THOMSON-CSF. 25 Oct., 1968 [31 Oct., 1967], No. 50842/68. Headings H3A and H4D. In relative phase determining apparatus, a signal of unknown phase is compared in a phase comparator 6 with a signal from a mixer 5 and the comparator output controls the frequency of a variable frequency oscillator 2, the inputs to mixer 5 being the output of a mixer 3-fed with the outputs of oscillator 2 and a fixed frequency oscillator 1-and an output from oscillator 2 as delayed by line 4. The invention is applied to measuring the distance d of a target 10, the transmitted waves being radio, acoustic or light. The measuring wave may be amplitude modulated on to a higher-frequency wave, e.g. a semi-conductor visible or invisible light source, Fig. 2 (not shown). The arrangement may be extended for higher precision over greater distances, utilizing two fixed, and two variable, frequency oscillators, Fig. 3 (not shown).

【发明专利】 Improvements in or relating to Solute Concentration Measurement

申请号:GB1460965 申请日:1970-08-16
公开/公告号:GB1151501A 公开/公告日:1970-08-17
申请人:PERKIN ELMER LTD 发明人:SIMON WILHELM
代理人: 分类号:G01N30/62
机构代理:
显示摘要
1,151,501. Determining the molar concentration of solutions, electrically. PERKINELMER Ltd. July 6, 1966 [April 6, 1965], No.14609/65. Heading G1N. The molar concentration or molecular weight of a solution is monitored by observing the change in resistance of a semi-conductor bead thermistor 39 as the solution flows from an outlet 37 of a tube 27 over the bead surface in the form of a film, which solution may be effluent from a chromatograph column (not shown). The bead resistance may be compared in a bridge with a fixed reference resistance, or alternatively with the resistance of a reference bead 41 over which a carrier liquid or solvent, as used in the column, flows in the form of a film from an outlet 38 of a tube 28. The vertical separation of the respective outlets and beads is adjustable to produce the films. The thermistor sensors are contained in an isopiestic chamber 19 (i.e. a chamber containing a constant vapour pressure of solvent) on the base of which is a pool 50 of solvent similar to that used as the carrier in the column. Over-flow funnels 40, 44 prevent contamination of the pool by the effluent. The inner surface 17 of the chamber is lined with absorbent material to assist evaporation of the solvent. Operation The chamber is within a thermally insulating casing 1, 2 which is temperature controlled and in operation is heated by an electric heater 7, air being circulated by a fan 10, until steady state temperature conditions are reached and the pressure of evaporated solvent remains constant which in general is when the chamber is saturated with solvent. The resistance of the beads will then be stable. The flow of the effluent solution and solvent over the thermistors is then commenced. Since the effluent comprises the solvent and traces of a sample under analysis it will have a lower vapour pressure than the solvent, dependent on the quantity and molecular weight of the sample constituents; which results in condensation of solvent vapour on the effluent surface whose temperature then increases. This increase is detected by the bead 39 and upsets the balance of a constant voltage input D.C. bridge. Equilibrium is reached when the vapour pressures of the effluent and solvent become equal, and the temperature difference which then exists indicates the molar concentration of the sample constituents on the bead 39 at that time. By adjusting the bridge until balanced a record of temp. difference is obtained or alternatively the bridge output may be connected to a chart recorder. The refractive index of the effluent may also be detected, and is dependent on density, also the molecular weights at various peaks can be derived by correlation of the reading of total mass and total number of moles. The arrangement may be used to compare two liquids.

【发明专利】 Improvements in or relating to Internal Reflection Elements

申请号:GB533567 申请日:1970-08-16
公开/公告号:GB1174005A 公开/公告日:1970-08-17
申请人:PHILIPS ELECTRONIC ASSOCIATED 发明人:无
代理人: 分类号:
机构代理:
显示摘要
1,174,005. Optical apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb.3, 1967 [Feb.4, 1966], No.5335/67. Heading G2J. An element for use in A.T.R. spectroscopy is coated with a thin film 2, Fig. 2, of low refractive index and a second film 3 of high refractive index so that a beam 10 coming through the element is partially reflected at interface R 1 , 3 as beam 22 and partially transmitted as beam 18. On reaching the interface R 3,4 . the beam 18 interacts with the sample 4 and returns as beam 20 for further splitting up at interface R 1,3 . into beams 221, 181, so that the initial beam has a portion forming multiple reflections in the layer 3 and thus enhancing the absorption which is characteristic of sample 4. By arranging the reflectivity of interface R 1,3 to match that at interface R 3,4 and controlling the phase of components 221 so that they are 180 degrees out of phase with component 22, by suitably dimensioning the films 2, 3, and using polarized light, substantially complete absorption can be achieved at a wavelength characteristic of sample 4.

【发明专利】 Optimized multiple reaction monitoring or single ion recording method

申请号:GB201501848 申请日:1970-08-22
公开/公告号:GB2525709B 公开/公告日:1970-08-22
申请人:MICROMASS LTD 发明人:MARTIN RAYMOND GREEN
代理人: 分类号:
机构代理:
显示摘要
A method and apparatus for mass spectrometry, wherein the emergence or elution of an ion of interest, or a product ion of interest indicative of a transition of interest (such as a fragmentation reaction), is monitored. When it is determined that the ion or transition of interest has eluted, monitoring is discontinued for that ion or transition, or the dwell time for that ion or transition is reduced. In experiments where multiple ions of interest are monitored during a single acquisition, and, for example, a mass filter is used to scan the masses or mass to charge ratios (m/z) of ions of interest during a cycle, when elution of a first ion of interest is complete, for example from a liquid chromatographic source (LC), the filter may be controlled to discontinue monitoring for that mass or m/z and thereby improve the duty cycle of the other mass or m/z ranges.