Abstract: A machine for casting concrete panels. The machine disclosed casts hollow core concrete panels in a single casting operation utilizing a slipform technique to fill cores with core material which can be dumped from the core after curing of the concrete has been accomplished. Vibration of the slipform during casting facilitates free flow of concrete around the slipform and core material extruded from slipforms. The slipform has a closed front portion which is tapered to a reduced cross section. The machine utilizes a casting pallet employing improved side form cleaning apparatus. The machine also includes improved finishing screeds for applying decorative three-dimensional finishes on the top surface of cast panels.

Abstract: An upright rearwardly inclined game-piece receiving panel is carried by a panel receiving socket in a base and is movable to a vertical position by a biasing spring acting on the socket. Game-pieces applied to the panel are ejected therefrom upon the expiration of a predetermined period of time when a timer mechanism also carried by the base member releases a latch mechanism holding the socket inclined against the bias of the spring. The panel is preferably shaped like a human head. The game-pieces preferably resemble facial features and have bases shaped complementary to recesses formed in the panel at appropriate locations and are selected by the player as a component of a face by reference to a design on a card. The game is won by first selecting the appropriate game pieces and applying them to the panel to produce the prescribed composite design and then manually stopping the timer mechanism before it causes the game-pieces to be ejected from the panel.

Abstract: Rehydration of hydrogel components in sterile packages.

Abstract: A self-contained wearable device for use by diabetics to provide an audible indication of the onset of insulin shock. The device utilizes a sensor positioned to sense the buildup of perspiration on the skin of the user and an annunciator to provide an audible warning when the amount of perspiration on the skin of the wearer exceeds a predetermined threshold level. The distance between the sensor and the user's skin is adjustable to prevent false operation of the device due to changes in the resistance of the user's skin.

Abstract: A monitor for measuring the field strength of RF radiation is disclosed. A set of three mutually orthogonal antennas sense the total field strength. Digital linearizing and scaling circuits provide an output equal to the sum of the square of the field components. In the preferred embodiment, the digital circuitry includes a control or zero channel which provides a zero level control signal which is processed to provide a correction signal to the analog to digital conversion circuitry to remove the effects of noise, pickup and drift on both the transmission line, which connects the antenna and the monitor, and on the analog electronic circuits of the monitor.

Abstract: A blood pump system in which a roller pump is provided for pumping blood through a flexible tube. A low voltage D.C. motor is provided having an output shaft. An electrical control circuit is connected to the motor for applying the necessary voltage to drive the motor at a predetermined speed. Gearing means are provided connecting the motor's output shaft to drive the roller pump. Means are optically coupled to the motor for controlling the speed of the motor. Means are connected to the optically coupled means to determine the blood flow rate being pumped though the tube by the pump. Means are provided which display a digital readout of the flow rate. The roller pump is provided with an arcuate bearing surface, which carries the flexible tube, the bearing surface defining an arc of approximately 168.degree.. Lead ramps extend from each end of the bearing surface and are substantially tangent to the end of the surface from which the respective ramp extends.

Abstract: Disclosed is an air make-up unit mounted within the confines of a conventional outside wall of a frame building between the 16" on-center studs. The unit includes a rotary blower with a horizontal tangential discharge, the latter having heating elements therein and being encased in a vertical wall of insulation which extends within an insulated air chamber defined by a telescoping outer casing. Positive air pressure is maintained within the building by air-pressure-sensitive controls located within the building and controlling the two-speed motor. The latter is thermostatically controlled to be operated at a slower speed when colder weather prevails. It is also controlled and energized by a humidistat located within the building to force outside air into the building and diminish the humidity therein when needed.

Abstract: A plasma reactor, in which particulate matter is caused to interact with low temperature plasma (i.e. below 100,000 K.) comprises spaced stationary electrode structures 2, 11 of which at least one is annular, between which an arc or arcs 7 is established by a power supply which may include a thyristor (SCR) 9. The arc is pulsated and caused to orbit or circulate round the or each annular electrode structure to form a conical plasma zone between the electrodes, while particulate solids are introduced through inlets 5 to enter the plasma zone and interact with the plasma therein. Extended dwell periods and highly effective interaction are brought about by circulation and pulsation of the arc and a high particle population density.

Abstract: A machine for removing uncured concrete from the top surface of a cast concrete slab to expose the aggregate therein to provide a decorative surface finish. The machine utilizes a pair of counter-rotating brushes to remove concrete which has been prevented from setting by use of a surface retarder, thereby exposing the aggregate to leave an attractive exposed aggregate finish. The counter-rotating brushes deposit the uncured concrete brushed from the surface of the slab onto a conveyor which carries the concrete waste to the edge of the slab for disposal.

Abstract: A medication dispenser in which medication to be dispensed is housed, including a member operable to allow medication access. The dispenser provides a medication alert signal at preselected times in accordance with a desired medication regimen. A medication access signal is provided when medication access is obtained. Data representative of the relative timing between a medication alert signal and a medication access signal is written into a readable memory whereby that data is available to a physician for evaluation. In a preferred embodiment, the data is representative of the time of occurrence of each medication alert signal and medication access signal. The interval between medication alert signals is selectively alterable.