Abstract: A module for an on-board evaporative emission leak detection system that detects leakage from an evaporative emission space of a fuel system of an automotive vehicle. A housing provides an inlet port, an outlet port, and a flow path between the inlet port and the outlet port. An electric-motor-operated impeller pump causes flow in one direction along the flow path when in a pumping mode of operation. The pump is open to flow in both the one direction and an opposite direction when in a non-pumping mode. A solenoid-operated valve is disposed in the flow path to block flow through the flow path when in a blocking mode and to pass flow through the flow path when in a passing mode. A pressure switch is exposed to the flow path at the outlet port. A lead frame assembly provides respective electric circuit connections to the motor, solenoid, and pressure switch.

Abstract: Drive electrodes and sensing electrodes are formed on a front face of a piezoelectric body of a vibrator. A first reference electrode is formed on a rear face. Second reference electrodes are formed on side faces of arm bars of the vibrator at a position corresponding to the sensing electrodes. The second reference electrodes are connected to the first reference electrode formed on said rear face.

Abstract: An ultrasonic measurement method in an ultrasonic measurement system having an ultrasonic transducer includes emitting an ultrasonic pulse from the ultrasonic transducer. An ultrasonic pulse is received in accordance with a pulse travel time wherein the amplitude of the received ultrasonic pulse varies according to the pulse travel time. A first electrical signal is provided representative of the received ultrasonic pulse wherein the amplitude of the first electrical signal varies in accordance with the pulse travel time. A second electrical signal is provided in accordance with the first electrical signal wherein the amplitude of the second electrical signal is substantially independent of the pulse travel time. In order to determine the second electrical signal variable amplification is applied to the first electrical signal in accordance with the travel time.

Abstract: A method is disclosed for measuring at least one atmospheric gas in an upper-air region using a plurality of sensors. The step of the method include measuring a temperature of the air using one of a plurality of sensors, which is not affected by gases contained in the air; measuring a temperature of the air using some of the plurality of sensors, each of the sensors being affected by at least one gas contained in the air; and calculating an amount of that atmospheric gas based on measured values obtained from each of the plurality of sensors.

Abstract: An apparatus and a method of measuring contamination particles generated during manufacturing of semiconductor devices and an analysis method therefor are described. The apparatus for measuring contamination particles has a regulator for controlling the flow of source gas, a first junction, a first filter, a first air valve, a test component, a second junction, a flow pressure reducer, a third junction, a particle counter, a second pump, a computer system, a third air valve, a flow meter, a second filter, a second air valve, a fourth junction, a third filter, an impactor, and a first pump. It is possible to analyze structures and elements of the contamination particles generated from a gas delivery system (GDS) and from at least one utility component constituting the system. Further, it is possible to set up a reference for controlling the contamination particles generated from the GDS and from at least one of the utility components.

Abstract: A gravimetric cup for containing a liquid sample to be measured for moisture or vapor transmission loss therefrom, such gravimetric cup having a lower cup body and a cover, the cover having an outer edge rim alignable with an upper edge rim of the cup for mounting a film membrane thereacross, and the cover having radial, upwardly curved ribs extending between the outer edge rim and a center hub region so as to provide an evenly distributed clamping force upon the membrane. The cup body has a pair of upwardly projecting posts, each having an engagement channel. A clamping bar has slotted ends for engaging against the respective post engagement channels, and a center threaded hole for receiving the threaded shank of a tightening knob that applies downward force to the cover.

Abstract: The fat content and and undissolved solids content of a milk sample, taken from a milk processing flow, are separately determined. In addition, the total solids content of the milk flow is determnined. Based on the fat, undissolved solids, and total solids content, the amount of protein and/or casein in the flow is determined. In a control portion of the invention, the fat and undissolved solids are controlled dynamically to standard values, whereby the characteristics of the milk flow are adjusted to standard values useable for whole milk, cheese-making and other uses.

Abstract: A semiconductor device includes a substrate, a semiconductor chip provided on the substrate, a plurality of terminals provided on a first side of the substrate, each electrically connected to the semiconductor chip and a plurality of test pads for performing electrical characteristic tests on the semiconductor chip, each test pad being electrically connected to a respective terminal in one-to-one correspondence.

Abstract: An inverted pendulum seismometer mechanism has a massive boom (20) mounted in friction free crossed leaf spring pivot bearings (24) clamped in V grooves 28 on a frame (10). To lock the boom for transport, without straining the bearings, a camshaft (70) turns and, sequentially, cams (72) lift pivot clamping levers (30), guide webs (80) embrace the boom, and a cam (74) lifts the boom off the V grooves until probes (56) on adjustable locking screws (54) in the frame top cross beam (14) engage recesses (58) in the top end of the boom. Further rotation of the camshaft reverses the sequence to reconnect the boom to the frame in an operative state.

Abstract: A modular chromatography column heating and temperature control system includes a heater base module with a compartment for the chromatography column that includes a heater plate. A set of heater blocks is provided in pairs, each heater block having opposite main faces in which are formed channels that match chromatography columns of different diameters. The heater blocks are mounted in pairs on the heater plate with the chromatography column held between them in matching channels on the two adjacent main faces of the heater blocks. An appropriate number of pairs of heater blocks are mounted to the heater plate so that the pairs of heater blocks cover as much of the length of the chromatography column as desired. The set of available pairs of heater blocks may include heater blocks of different lengths, so that appropriate selections of pairs of heater blocks can be made to best match the length of the chromatography column.

Abstract: The present invention relates to ultrasonic resonators comprising a resonator chamber body (11) and one or more electroacoustic transducers (13, 14). The resonator body consists of a non-piezoelectric material; it forming a resonant cavity for accommodating a specimen. This resonant cavity is configured so that between the acoustically excitated internal walls a resonant wave field of standing linear acoustic waves is formed. The electroacoustic transducer(s) is(are) acoustically coupled externally to said resonator chamber body (FIG. 2) fixedly or removably or movably.

Abstract: A process for determining the viscosity of liquids on a microliter scale, wherein first the difference (a) in the pressure drop in a reference liquid flowing in a constant volume flow through a capillary measuring tube is determined with and without a sample loop inserted in the capillary measuring tube passage, the sample loop is filled with the liquid to be measured outside the capillary measuring tube passage, the sample loop is reinserted into the capillary measuring tube passage and the pressure drop is measured immediately following the insertion of the sample loop in the capillary measuring tube passage. The difference (b) in the pressure drop immediately following insertion of the sample loop and the pressure drop across the capillary measuring tube without the sample loop can then be calculated.

Abstract: A quick set of procedures for diagnosing the cause of a failure in a vacuum system having a pump and a chamber is disclosed. If the base pressure of the system has failed, but the rate of rise has not, then the most likely cause of the failure may be in the pump. If the rate of rise has failed, but the base pressure has not, then the most likely cause of the failure may be in the chamber. If the base pressure and rate of rise have both failed, then the most likely cause of the failure is in the chamber, but there is a slight chance of a failure in the pump. Measurements of the partial pressures of certain residual gases in the system may indicate a leak in the system. Measurements of the partial pressures of certain residual gases while tuning off and on the lamps in the system may indicate a leak in the lamps. Measurements of the partial pressure of helium or other relevant gas, while moving a source of helium around the outside surface of the system, may determine the location of a leak.

Abstract: The invention relates to a probe for measuring volatile components in an aqueous solution, for example to determine the alcohol concentration of an aqueous solution, with a probe body with a continuous lumen and a membrane disposed transversely with respect to the lumen, which isolates the lumen from the outside, and with a semiconductor gas sensor disposed in a housing inside the lumen at a distance from the membrane forming a measuring chamber filled with air, said sensor responding to the gases permeating the membrane by changing its electrical resistance, with an open continuous pressure relief channel being provided for the outflow of the gases permeating into the measuring chamber on the side of the sensor and the measuring chamber facing away from the membrane, and the pressure relief channel being connected at one end through an opening to the measuring chamber and at the other end on the outlet side having an outlet opening of a size such that the volume flow of the gas permeating through the membran

Abstract: A carrier and system for testing a semiconductor die and a method for fabricating the carrier are provided. The carrier comprises a base and an interconnect attached to the base adapted to establish temporary electrical communication with the die. The interconnect includes contact members adapted to make temporary electrical connections with test pads on the die. In addition, the interconnect includes conductors in electrical communication with the contact members. The conductors include input/output pads configured for direct electrical connection to an electrical connector of a testing apparatus such as socket on a burn-in board. In a first embodiment of the interconnect, the contact members are formed on a silicon substrate and include penetrating projections. In an alternate embodiment of the interconnect, the contact members are formed as microbumps mounted on flexible tape.

Abstract: A method and apparatus for separating selected materials in a gas chromatograph. The gas mixture is introduced into a separation column of the gas chromatograph and the separation column is heated inside a chamber of the gas chromatograph to a preset temperature. The preset temperature is matched to the material to be separated and that heating is accomplished by using IR radiation.

Abstract: A pressure testing apparatus can pressure test separately a first object having a width and a height and a second object having a width and a height. The first object can be, for example, a fiber optic repeater; the second object can be, for example, a fiber optic branch unit. The pressure testing apparatus has a testing vessel and an adaptor. The testing vessel has a chamber with an inner width corresponding to the width of the first object and a first gap. The adaptor can be selectably insertable into the chamber of the testing vessel and has an inner width and an outer width. The outer width of the adaptor corresponds to the inner width of the chamber of the testing vessel and a second gap. The inner width of the adaptor corresponds to the width of the second object and a third gap.

Abstract: Indicators and methods of indicating are disclosed. Intended primarily for use with medicine containers, the devices typically indicate the number of doses of medication ingested or remaining to be taken by a patient during a particular period. These devices additionally provide tactile assistance to patients in appropriately repositioning the indicator arms and, when used correctly, may reduce the possibility of patient overdose by restricting improper attempts to advance the indicator arm.

Abstract: The invention relates to detecting leaks in a pipeline using enhanced methods of data sensing, digitally encoded transmission, and cross-correlation. A plurality of acoustic sensors are applied to the pipeline to sense a combination of signals from the leak and much greater quantities of noise. The sensed data is digitized at the sensor, encoded and digitally transmitted to a computerized base station. The encoded data from a plurality of sensors received at the base station is decoded, digitally filtered and cross-correlated. Enhanced methods of cross-correlation are performed to estimate the likely presence of a leak and the location and size of any leaks present. Participation in the leak detection procedure by an expert not present at the pipeline is facilitated by communication of data between the base station and a distant supervisory station.

Abstract: The "Tank Test" method for determining well tests in low pressured reservoirs or aquifers utilizes gravity drainage from a water storage tank to inject water into the reservoir. The Tank Test eliminates the need for expensive pumping equipment and the required manual pump rate adjustments. The low costs associated with the Tank Test allows the test to run for a longer duration so that a greater portion of the reservoir can be investigated. The duration of the test and thus the radius investigation can be extended by repeatedly refilling the tank as necessary. The Tank Test also reduces the possibility of fracturing the reservoir during injection tests in low permeability reservoirs. The primary criteria for performing a tank test is that the hydrostatic head from the tank to the formation be significantly different than the reservoir pressure. In addition, the Tank Test minimizes stress effects on stress sensitive formations.