Abstract: A flow meter system that calculates mass flow rate based only on a single pressure signal. A flow controller is arranged in parallel with a restriction such that a constant pressure differential is maintained across the restriction. The pressure, and temperature if not controlled, of the fluid flowing through the restriction is measured on either side of the restriction. The pressure is compared to a plot of pressure versus mass flow rate calculated for the specific restriction and fluid being measured. The constant pressure differential maintained across the restriction yields a linear relationship between pressure and flow rate. If temperature is not controlled, the plot of pressure versus mass flow rate will remain linear, but the slope of the curve will be adjusted based on the temperature of the fluid.

Abstract: A differential-type dry pipe valve for a fire protection sprinkler system has a ratio of effective air sealing area to service water sealing area that is smaller than a ratio of service water pressure to system air pressure at which the fire protection sprinkler system is actuated.

Abstract: An intracranial pressure monitor including a ventilator having an outlet tube coupling with a patient's airway. An arterial line is coupled with an artery of the patient. An intracranial monitor is coupled with a skull of a patient. A monitor is provided that is in communication with the ventilator, the arterial line, and the intracranial monitor. The monitor includes gauges for monitoring carbon dioxide levels in the skull of the patient. The monitor includes an alarm in communication with the gauge for monitoring carbon dioxide levels.

Abstract: A pressure regulating valve having secondary venting measures. It comprises a control member for the control of the fluid connection between a primary duct and a secondary duct. The position of the control member is able to be influenced by a venting aperture also under the control of the control member and serving for venting the secondary duct. The venting opening is so arranged on the setting member that it is located outside the comparison chamber and in this respect either directly in the secondary duct or in a region in communication with the secondary duct.

Abstract: The invention is directed to a silver/palladium (AgPd) cell for adjusting or measuring a level of hydrogen in a high pressure environment, a high temperature environment, and/or an environment incompatible with stainless steel. The inventive cell includes a hollow diffusion tube of a AgPd alloy operably associated with a hollow connecting member and a connected tube, also operably associated with the hollow connecting member. The cell is operable in environments having a pressure of up to 3,600 p.s.i.

Abstract: A spray head assembly for attaching to an industrial robot having an overload protection device coupled to a changer with an attached spray head body with a common nozzle supply and a plurality of nozzles selectively attached to the common nozzle supply. Each of the plurality of nozzles is selectively rotated into position and may provide a different spray pattern depending upon the application. The spray head assembly is compact and suited to working in tight spaces, and in particular spraying the interior of cavities. The present invention is particularly applicable to applying an anticorrosion wax to the inside of automobile or car body cavities.

Abstract: A double check valve reduced pressure backflow preventor assembly is configured to have a relatively small length, volume and/or weight. The assembly defines parallel, preferably coaxial, inlet and outlet directions. In one aspect, first and second check valves are at an angle, preferably of 90°, to the in-line axis and preferably intersect the in-line axis. In one aspect, a relief valve is positioned spaced from the in-line axis. First and second shutoff valves are enclosed in the same integral, unitary housing which encloses the check valves and, preferably, some or all of the relief valve. The shutoff valves are preferably positioned along the in-line axis.

Abstract: A multiple port valve plate assembly for use with a vacuum drum in a labeling apparatus. The valve plate has a first stationary vacuum cavity which is supplied with one level of vacuum suitable for picking up a label segment from a cutter with limited tension. The valve plate has a second, floating cavity, which is supplied with another, higher level of vacuum suitable for firmly griping the cut label segment as an adhesive is applied to the label segment. The valve plate has a third stationary vacuum cavity for suitable for holding the label at a lower vacuum pressure while the label is being transferred to a container. The third cavity may be further divided into a label application segment with an even lower vacuum pressure. A pressure port is also provided adjacent the third cavity for facilitating release of the label from the vacuum drum as it contacts the container.

Abstract: A valve includes a bobbin/valve body, a solenoid and a plunger. The bobbin/valve body is formed in one piece, defines all of the valve's inlet/outlet ports and forms the entire support structure for the solenoid and the plunger. To assemble the valve, a plunger body is inserted into the bobbin/valve body through an end opening into a longitudinal bore and a spring positioned to bias the plunger body to a normally closed position. A pole piece is then inserted through the end opening into the longitudinal bore and attached to the bobbin/valve body. A solenoid coil is wound around a central cylindrical section of the bobbin/valve body, and terminal pins and a flux conductor are attached to the bobbin/valve body. The attachment of the pole piece, the terminal pins, and/or the flux conductor may be accomplished by press-fit and/or swage coupling techniques.

Abstract: A multiplane transesophageal probe (20) includes a transducer (28) and a handle (30). The handle incorporates a control (40) mounting switches (51-58). The switches and control panel are covered with foil (43). A seal (70) couples the control panel and foil to the handle.

Abstract: An extendible dish drain rack comprising a plurality of bases designed to assemble in a particular sequence; the front of the second and each subsequent base designed to overlap the rear of the preceding base with a short overlap. A lip for overlapping a sink is provided at the front of the first. A first fastener is located at the front of each second and subsequent base. A second fastener is located at each rear. The fasteners are designed to mate with each other, prevent slippage and allow for disassembly of the bases. Each base also incorporates a device for inclining the bases. This creates an angle of inclination in the assembly sufficient to efficiently drain water. There are typical supports for supporting dishes in a water draining configuration on the top surface of each base. Preferably the device for inclining the bases is a foot or leg located under the rear of each base. Preferably one fastener is a slot and the second fastener is a tab which loosely fit to each other.

Abstract: A flapper-type anti-siphoning check valve for a domestic water system has an auxiliary valve built into the flapper. The auxiliary valve permits slow reverse flow of water through the check valve when the flapper is closed to prevent build-up of pressure in the user's water system, but closes as a result of more rapid reverse flow of water in the event of a sudden drop in supply pressure.

Abstract: A fluid mass flow controller, particularly adapted for controlling mass flow rates of toxic and reactive gases used in semiconductor device fabrication, includes a control circuit connected to pressure sensors for sensing the differential pressure across a flow restrictor in the mass flow controller for controlling a valve to control the fluid mass flow rate to a setpoint. The control circuit compares the differential pressure with the downstream pressure at a measured temperature with a data set of a gas passing through the flow controller for a range of differential pressures and downstream pressures and adjusts the flow control rate accordingly. The flow controller is mechanically uncomplicated including a two part body for supporting the pressure sensors, a remotely controllable flow control valve and the flow restrictor.

Abstract: Monitoring equipment comprising a part which defines a cavity, and input device to input fluid under pressure into the cavity. Mounting devices are provided on the part to enable an engine fuel injector valve or other fluid release device to be connected to the part and to release fluid from the cavity intermittently when the system is in use. Controls are connected to issue a triggering signal to the fluid release device to cause the latter to release fluid from the cavity. A pressure sensor is coupled to the cavity to provide a measure of the pressure within the cavity. The equipment further comprises pressure signal modifying device connected to receive signals from the pressure sensor and the controls and constructed to provide an output signal which is a measure of the pressure of fluid within the cavity at the time the controls issues such a triggering signal, while the effect of signals from the pressure sensor received by the modifying device on the output signal therefrom at other times is obviated.

Abstract: The invention relates a method and a device for regulating individual sub-flows of a conveying system while the main flow is conveyed in a constant manner. The aim of the invention is to provide a method and a device which enable the sub-flows of the conveying lines of a system for conveying fluid media to be regulated as required in said individual conveying lines with just one conveyor unit. To this end, the inventive device for regulating individual sub-flows of a system for conveying fluid media has several conveying lines which are guided in parallel. The invention is characterized in that the following are arranged in the conveying system: at least one total pressure measuring device (10), at least one sub-flow measuring unit (D) in each conveying line, at least one valve (7) with a throttle (B) and a data acquisition, processing and control value output module (C), these being functionally interconnected by hardware and/or software.

Abstract: The invention relates to a method and apparatus for determining the switching pressure of a safety appliance, which is adapted to safeguard an installation against exceeding, or falling below, a gas pressure. An increasing pressure is applied to the safety appliance such that the applied increasing pressure rises in accordance with an exponential function. Due to the constant relative increase in the pressure supplied to the safety appliance, it is not necessary to take into account settings of the safety appliance. Errors resulting from incorrect settings by the user are thus prevented.

Abstract: An intramuscular stimulation (IMS) device and method permit electrical and mechanical modes of stimulation to be carried out individually or together. The gun-like stimulation device permits a disposable needle applicator unit including a needle and elongate sheath to be removably attached thereto. Different needle penetration depths are obtainable with a single needle by virtue of a drive carriage with a position selecting element. To help avoid repetitive strain injury to a treating physician, a processor may monitor a body contact sensor and continue an intramuscular stimulation cycle only so long as contact is detected. In order to ensure that only a single IMS operation is performed during a period of body contact, performance of a further intramuscular stimulation cycle may be prevented unless it is determined that body contact was broken at a time following a previous IMS cycle.

Abstract: An improved one-way valve for use in breathing apparatus comprising a valve housing, a one-way valve disposed in the valve housing that is in sealing contact to the valve housing, and a flexible retainer ring. The flexible retainer ring allows the one-way valve to unseat a greater distance within the valve housing thereby allowing an increase in the amount of expiratory gas through an exhaust port of the valve housing and the flexible retainer ring also prevents the deformation and inversion of the one-way valve thereby maintaining the proper flow of both respiratory and expiratory gases.

Abstract: A valve assembly includes a valve with a bobbin/valve body, a solenoid and a plunger. The bobbin/valve body is formed in one piece, and defines all of the valve's inlet/outlet ports and forms the entire support structure for the solenoid and the plunger. The valve may be connected to a manifold by press-fitting port nipples of the valve into corresponding channels in the manifold. The manifold is formed of a resilient, elastomeric material, and the port nipples include radial projecting barbs, which enable the valve to be fluidly-connected to the manifold without additional O-ring seals or other mechanical sealing devices. Fittings with barbs can likewise be press-fit in other channels of the manifold to connect the valve assembly with fluid lines or other components in the fluid system. The fittings can also be provided unitary with the manifold, and/or adhesively attached to the manifold and/or to the fluid lines and other components.

Abstract: A hermetic compressor includes a compressing chamber and a valve plate forming suction and discharge ports communicating with the chamber. A discharge valve has one end fixed to the valve plae and a free end that is flexible to open and close the discharge port. A discharge backer has one end fixed to the valve plate and is positioned to limit the opening movement of the discharge valve. The discharge backer includes integral protrusions projecting toward the discharge valve. One of the projections is in constant contact with the discharge valve and forms a fulcrum therefor.