Abstract: A compact fluidic circuit card having a main body with internal sensing elements and with fluidic circuit components (FCCs) located on both its front and back surfaces. An immunoassay sensing element may be used either in the form of a optical waveguide around which the liquid test sample may flow, or a disc through which the liquid test sample may flow. The card may be made inexpensive enough to be disposable by forming its main body and all of its FCCs so that they are suitable for being integrally formed in one piece by injection molding from plastic, regardless of the number of its FCCs; and by using thin strips of adhesively attached material for the main body's cover, needle septum strip and valve membrane strip. Heat-shrink plastic may be used for the valve membranes. The strength of the heat-shrink plastic's adhesive bonds may be increased by using a corona or plasma discharge to intentionally damage the surface of the heat-shrink plastic.

Abstract: Apparatus and method for detecting the presence of ultrasonic wave energy at a selected location within a volume of material provides a visual display indicative of the ultrasonic wave energy at the selected location, and certain characteristics of the detected ultrasonic wave energy, by coupling with the volume of material, at the selected location, a column of ultrasonic wave energy responsive fluid medium with ultrasonic wave energy responsive visible particles suspended therein so as to induce corresponding ultrasonic wave energy in the column whereby the particles are suspended in the column and are arranged in a visible pattern to establish the visual display indicative of the ultrasonic wave energy at the selected location.

Abstract: The invention herein described relates to devices used to test the integrity of fire sprinkler systems. The present device incorporates a control panel which allows a single operator to electrically activate a test valve within a specific sprinkler network. The interval between the initiation of water flow and the resulting alarm signal is timed by the operator using the control panel. The operator can test any of the building's sprinkler networks simply by adjusting a rotary switch located on the control panel. In this manner, the time and expense associated with sprinkler testing may be greatly reduced by having a single operator perform dependable tests of the entire automatic sprinkler system from one location.

Abstract: A fluid status detection system includes a plurality of probes connected to a controller. The controller includes a microprocessor, a digital memory, relays, and progammed so that selected alarm and relay latching conditions may be stored, and alarms activated and relays latched according to the alarm and latching conditions. The microprocessor is programmed to provide an alarm acknowledgement signal upon the alarm being acknowledged. An operator may select one or more release conditions individually for each relay from a plurality of possible relay release conditions and store the conditions in the memory. The possible relay release conditions include: the condition that the probe signal indicates that the event that caused the alarm has cleared; the condition that the alarm acknowledgment signal has been provided; the condition that the probe signal indicates that the event that caused the alarm has cleared and the the alarm acknowledgment signal has been provided.

Abstract: A turbine engine fuel measuring and control system which incorporates a fluidic density sensor which is unaffected by variations in the physical characteristics of the fuel supplied to the engine.

Abstract: An electronic detection system for detecting intruders employs a transmisn line as a sensing element. In one embodiment the transmission line is a modified surface-wave transmission line, for example, a Goubau line, which is positioned about the perimeter of the area to be protected. An intruder in the field of the line causes an RF reflection back toward the source, which reflection may be detected by Doppler range-gating techniques. In other embodiments of the invention the transmission line is an insulated, twisted wire pair or a deformable transmission line. In some instances, the transmission line may be replaced with an active or passive pressure line.