Abstract: A cathode-ray tube includes a phosphor screen having a tricolor phosphor layer composed of a red phosphor, a green phosphor of ZnS:Cu, Al activated with Ni, Fe, or Co, and a blue phosphor of ZnS:Ag activated with Ni, Fe, or Co. The green phosphor and the blue phosphor have a decay intensity of at most 0.5% upon elapse of 8 milliseconds after excitation is removed therefrom. The green phosphor of ZnS:Cu, Al activated with Ni and the blue phosphor of ZnS:Ag activated with Ni have their afterglow characteristics substantially equalized to the afterglow characteristics of the red phosphor of Y.sub.2 O.sub.2 S:Eu.

Abstract: Foam tester device, which is useful for testing the foaming of liquids at elevated temperatures, has an insulated cabinet containing a temperature-regulatable volume; a heater capable of heating a gas for the volume; a feature to circulate heated gas in the volume; an access system such that sample container(s), each capable of holding a liquid sample, is(are) insertable into the volume so as to be heated; and a feature, for example, a window, to observe any sample(s) in the sample container(s) such that observation can be conducted from outside the cabinet. The foam tester is a gas, especially air, bath. Cooling may be provided by water or other liquid, for example, propylene glycol and water mixture, and/or by insert of a cooling device, for example, a cooling carosel or insert drawer in place of the foam tester sample carousel. Foam test operation is simplified, and the foam tester may be employed to operate sample testing cycles without removal of samples from the tester between tests.

Abstract: A probe card device used in a probing apparatus for testing the electrical characteristics of a semiconductor wafer by bringing bump electrodes into contact with a plurality of electrode pads of the wafer comprises a probe card, a support block for supporting the probe card, and a pushing mechanism for pushing the probe card toward the wafer. The pushing mechanism includes a pushing member divided into a plurality of blocks, and a support member for supporting each of the divided blocks. These plural blocks are movable independently and serve to push the wafer in a manner to follow a surface profile of the wafer.

Abstract: A wellbore survey method and apparatus which includes a gyroscope, wherein the gyroscope has a spin axis, aligned with the instrument axis, and further having two sensitive axis orthogonally related to the spin axis and to each other. In addition, the wellbore survey apparatus contains a drive means, functionally connected with the gyroscope, to rotate the gyro about the instrument axis. The wellbore survey apparatus also contains a set of accelerometers, wherein the sensitive axis are aligned orthogonally to each other, and said drive means is functionally connected to the accelerometers to rotate the accelerometers about the instrument axis. Sensors determine the azimuthal direction of inclination of the wellbore at a first location therein and while traversing from said first location. Attitude references of the wellbore with regard to said first location are determined while the tool is continuously traversing through the wellbore.

Abstract: An off-line automatic viscosity measuring apparatus, which can execute viscosity measurement of a plurality of specimens while automatically replacing rotors, is provided. The off-line automatic viscosity measuring apparatus according to the invention has: a detachable rotor 7; a viscosity detection head 33 for executing viscosity measurement with the rotor 7 connected thereto; a detection head moving mechanism 34 for moving the viscosity detection head 33 up and down and left and right; a separation aid mechanism 50 for aiding in separation of the rotor 7 and the viscosity detection head 33; and a rotor magazine mechanism 40 for holding a plurality of rotors 7. The viscosity detection head 33 has a bottom end formed with a detection head attaching/detaching part for accepting the rotor 7. The rotor 7 has a top end formed with a rotor side attaching/detaching part being inserted into the detection head attaching/detaching part for connecting the rotor 7 and the viscosity detection head 33.

Abstract: The present invention is a saturometer capable of directly measuring Delta P. The saturometer is also capable of providing measurements of temperature and barometric pressure as well as calculating percent saturation. The saturometer is further provided with a liquid crystal display for displaying the above measurements and calculation. The sensor package is removably housed in a probe having either an hour-glass shaped or auger/screw shaped interior designed to increase the velocity of water flow over the sensor package, thereby increasing the accuracy of the measurements.

Abstract: Methods and systems for non-invasive RF circuit testing, and/or for RF signal redirection, are disclosed. These methods and systems are used in conjunction with an RF circuit having a first circuit element, a second circuit element, a microstrip line coupling the first circuit element to the second circuit element, such that RF power flows along the microstrip line from the first circuit element to the second circuit element, and an RF test port for testing the RF circuit. A first removable electrical impedance is placed in physical proximity to the microstrip line to produce a first impedance mismatch at the microstrip line, such that some RF power is reflected by the mismatch back to the first circuit element. A second removable electrical impedance is placed in physical proximity to the microstrip line, such that the microstrip line is coupled to the RF test port.

Abstract: A pipeline leak detection apparatus is provided for fluid dispensing system having a dispenser, a storage tank, and a pump and an electric cut-off valve arranged in hydraulic series with the outlet of the storage tank. The pipeline to be monitored extends between the cut-off valve and the dispenser. A control circuit that operates the cut-off valve such that the valve opens with use of the dispenser and closes with non-use in order to hydraulically isolate the storage tank and pump from the pipeline and dispenser during periods of non-use. The leak detection apparatus is connected in a by-pass loop around the pump. It includes a small pot or plenum, a float switch, and a return line for fuel to spill back into the storage tank. The plenum inlet is connected to a branch in the pipeline near the cut-off valve, and its outlet is connected to the return line to the storage tank. The float switch is mounted to the plenum so that its float extends into the plenum chamber.

Abstract: An oxygen sensor comprising: an elongated planar sensing element; a tubular shield within which at least a portion of the sensing element extends; a seal sealably mounting the sensing element within the tubular shield; a shell for mounting the oxygen sensor to a body through which exhaust flows; and an annular gasket seating at a first surface the tubular shield and at a second surface an annular seat of the shell, wherein there is no direct contact between the tubular shield and the shell. An advantage of improved shock resistance is obtained, preventing damage to the seal, which may be made of glass.

Abstract: The present invention is a process for controlling a leak rate in a measuring system comprising an element under pressure, by allowing a leak rate proportional to the pressure from the system and in varying the leak rate in the manner as the pressure charge. The present invention allows lower high pressure to be applied to the element under pressure in order to obtain a given proportion of gas and therefore to reach the proportion of gas more rapidly by applying lower pressures to the element under pressure.

Abstract: A glide detect head includes a slider and a transducer. The slider includes a slider body with a leading edge, a trailing edge, and a slider surface therebetween. Substantially parallel rails are spaced apart and extend from the leading edge to a location spaced from the trailing edge. An asperity contact tab is disposed on the slider surface proximate the trailing edge such that asperity contact between the glide detect head and asperities occurs at the asperity contact tab. The transducer is disposed on the asperity contact tab for providing and output based upon asperity contact.

Abstract: An apparatus for measuring the gas transmission rate through contact lens material, and a method of measuring, using a test cell having an upper and lower gas chamber and separating the upper and lower chamber with a layered group of films, including a contact lens film material clamped between an upper and lower guard film, and flowing oxygen through the upper chamber and an inert gas through the lower chamber, the lower chamber being connected to a coulometric sensor to measure oxygen content in the inert gas at defined intervals, to obtain a first series of oxygen transmission rates. A second series of oxygen transmission rates are made with the same apparatus, but with the contact lens material removed from the apparatus, and the transmission rate through the contact lens material is calculated by subtracting the reciprocal of the second measured transmission rate from the reciprocal of the first measured transmission rate, then taking the reciprocal of the difference.

Abstract: A method of testing a speed of a semiconductor chip. A test time interval is specified. A test oscillator is fabricated as part of the semiconductor under test. The test oscillator contains elements that simulate a critical path of the semiconductor chip. Hence, the test oscillator's frequency is sensitive to process variations. The number of cycles of the oscillator occurring during the test time interval is counted. Based upon this count value, the speed of the semiconductor chip under test is determined.

Abstract: A system for preparative sorption driven chromatographic separation of organic compounds comprising a chromatographic element having a focusing zone in a porous tip with a vertex having a first diameter for receiving sample and solvent and a base having a wider second diameter, and an elongated resolving zone of at least the second diameter is disclosed. The system may further include a porous solvent transfer block for transferring solvent from a source to the tip. A method of chromatographically isolating an organic compound using the system is disclosed.

Abstract: A method and system for detecting degraded operation of a solenoid. A current through the solenoid is sampled at predetermined time intervals within a predetermined time period. A maximum value of the sampled current is first detected. Next, a minimum value of the sampled current subsequent to the maximum value is detected. Finally, a predetermined increase in the sampled current from the minimum value is detected to verify operation of the solenoid.

Abstract: A high speed gas chromatography system includes a heated isothermal region and a gas chromatography column located externally to the isothermal region. The system also includes a detector and a flow path between the column and the detector. At least a portion of the flow path is positioned in the isothermal region.

Abstract: An arrangement for continuously acquiring downhole information from an oil or gas producing well comprises a pipe hanger (18) suspended in the production tubing (2) above its thermal expansion joint (7) and near the production packer (6). A pipe (23) is suspended in the hanger (18) and extends into the producing zones (8,9) of the well. The pipe (23) is carrying instruments (24) for continuously monitoring local well conditions, the instrument signals being conveyed to the top of the well through instrument cables (14) running along the pipe (23), through the hanger (18) and further up along the production tubing (2). The pipe (23) also carries slide valves (25) operable through control lines (27) and packers (28) following the path of the instrument cables (14). These slide valves and packers permit separate testing of the individual production zones (8,9) of the well.

Abstract: A gas chromatograph includes a manifold having a plurality of gas conduits formed therein. A valve module includes a support, a first valve mounted to the support and having a plurality of ports, and a column coupled to the support and being in communication with a port in the first valve. The valve module is pluggably engagable with the manifold. A detector is coupled relative to the column to detect gasses expelled from the column.

Abstract: An analytical instrument includes a control system, including a computer and a pneumatic controller responsive to the computer, and a planar chromatographic assembly. The planar chromatographic assembly includes a planar pneumatic manifold, a heater/fan assembly for establishing a temperature-controlled zone, an insulating enclosure for confining the temperature-controlled zone to an oven cavity and certain zones of the planar pneumatic manifold, a separation column having inlet and outlet ends attached to couplers at selected internal fluid-bearing conduits in the pneumatic manifold and located closely adjacent the planar manifold and within the temperature-controlled zone, and one or more fluid-handling functional devices attached to the pneumatic manifold for fluid-tight communication with respective internal etched channels provided within in the planar pneumatic manifold.

Abstract: A device for self-diagnosis in a present invention includes a diffusion compartment having a porous diffusion passage at either end thereof, a sensing cell installed below the diffusion compartment for generating electromotive forces depending on the oxygen concentration via two electrodes provided on the upper and lower surfaces thereof, and a pumping cell for regulating the oxygen pressure in the diffusion compartment via two electrodes installed above the diffusion compartment. Also a method for self-diagnosis in a present invention comprises the step for operating A/F sensor, comparing a measured pumping voltage, making compensations in an output signal of the A/F sensor and diagnosing the corresponding A/F sensor if the pumping voltage value exceeds upper-limit voltage.