Abstract: Disclosed is a portable, pulse-jet engine powered fog producing device in which the valve controlling the flow of the fluid forming the fog is of simplified construction utilizing a mating conical cavity and a conical, resilient valve member which is also provided with an integral shoulder forming a dynamic seal for the valve stem with respect to the valve body. A manual lever, having a unidirectional connection to the valve stem, has a locking and "dead man" feature.

Abstract: The apparatus comprises means for sensing reductions in the output terminal voltage of the battery due to varying load conditions and producing a signal in response thereto during the time that the terminal voltage is below a threshold value. The apparatus further comprises integrator means such as an electronic counter or a stepping motor for integrating said signal and means for displaying the integral accumulated by said integrating means.

Abstract: A squeeze bottle dispenser comprising a resilient squeeze bottle and a plug insert in the neck of the bottle. The plug insert receives a dip tube assembly comprising a dip tube and a short tube element adjacent the discharge orifice of the plug insert. The short tube element defines a passageway having a diameter of from about 0.014 to about 0.040 inch and is from about one-sixteenth to about 1 inch in length. The dip tube internal diameter is substantially greater than the diameter of the short tube element passageway. The short tube element may be inserted in the upper end of the dip tube or may abut the upper end of the dip tube. The making of the dip tube assembly comprises the steps of providing a short tube element and a long dip tube, and inserting the short element into the dip tube, with the upper ends of the element and tube being flush.

Abstract: A system is disclosed for monitoring the state of charge of batteries in a fleet of electrically powered vehicles. Each battery has associated with it an integrator module which registers both the depletion and charging of the battery. While the battery is in use in the vehicle, a portion of the current flowing from the battery is sent to the integrator module which registers the current depletion. A readout circuit is also coupled to the integrating device for indicating the condition of the battery while it is in the vehicle. When the battery reaches a predetermined low state of charge, circuitry provided for detecting this condition provides a prewarning signal and on further discharge disables nonessential auxiliary functions in the vehicle, leaving only those systems working which are necessary in order for the driver to be able to return to a battery charging station. At the charging station, the integrator module and the battery are removed from the vehicle and connected at the charging station.

Abstract: An integration system is disclosed including a reversible integrating device having an integrating capacity between its upper and lower limits of integration which is at least twice that which is required for a desired application. Circuitry is provided for reading the integral stored in the integrating device and producing a voltage proportional to that integral. Circuitry is also provided for sensing which of the limits of integration is closer to said integral and a switch is provided for selecting the direction which integration will proceed so that the period of integration can always be at least half that of the integrating capacity of the device. To determine the integral during the period of integration, a variable resistor is first adjusted to store a reference voltage corresponding to the integral stored in the integration device at the start of the period of integration.

Abstract: A coulometer signaling device is disclosed which indicates when a particular machine has been used for a predetermined amount of time. The device comprises a mercury coulometer which includes an electrolyte whose color changes when the mercury deposited on the anode of the coulometer has been depleted. The end of the tube near the coulometer is somewhat enlarged and a lens is placed over this end in order to make the color change more visible.

Abstract: A coffee making apparatus is disclosed for automatically mixing instant coffee and for maintaining the coffee hot during dispensing thereof. The coffee is housed within an urn similar to that utilized for drip coffee although simpler in construction and designed specifically for instant or freeze-dried applications. Provisions are also made for dispensing hot water.

Abstract: Disclosed is a portable, pulse-jet engine powered fog producing device in which the hot engine components are mounted on one side of a vertical plate and the fuel and insecticide supply tanks are mounted on the opposite side of the plate and in which the engine components are formed to utilize natural convection currents to rapidly cool the engine after shut-down.

Abstract: Systems are disclosed for reading the integral stored in a coulometer by sensing the thermal properties of the electrolyte. A preferred embodiment comprises at least one temperature sensitive element and a heat source placed adjacent the coulometer positioned in such a manner with respect to each other that the heat conduction path extends through a portion of the coulometer. The thermal conductivity of the path is changed by the migration of the electrolyte into that portion of the coulometer that includes the conduction path.

Abstract: A method and apparatus are disclosed for reading a coulometer by sensing the temperature of the electrolyte. A preferred embodiment comprises a pair of temperature sensitive elements spaced apart along the coulometer and connected to a bridge circuit.

Abstract: Serum protein comprising specific binding proteins such as antibodies, B.sub.12 intrinsic factor, thyroxin binding globulin and the like may be copolymerized with globulin constituents of serum by the action of ethylchloroformate to form readily packed insoluble precipitates which, following purification as by washing, are eminently suited for employment as competitive binding protein absorbents in radioassay procedures.

Abstract: Disclosed is a device for checking the energy level of a battery, or battery pack, of the type used in the powering of transmitters, receivers and servos used in powered model airplanes, boats, cars, etc. The circuit connects a silicon controlled rectifier (SCR) and two light emitting diodes (LED) so that the diodes give a no, no-go indication of the battery's available output compared to a predetermined standard. Initially, in the checking procedure, the battery has power withdrawn through a load resistor prior to the final go, no-go indication.

Abstract: Disclosed are radioactive cardiotonic glycosides and a process of making such glycosides, the compounds being useful for radioimmunoassay of body fluids for cardiotonic glycoside content.The novel synthesis comprises reaction of a hydroxyl group of the sugar with a dicarboxylic acid derivative such as a diacid, diacid anhydride or a diacyl halide and thereafter reacting the free carboxylic group with a compound which will undergo electrophilic substitution reactions. A radioactive isotope, preferably .sup.125 I, is reacted via electrophilic substitution with the compound to form the radioactive cardiotonic glycoside.

Abstract: A heating plant monitor system for visually signalling the presence and location of a malfunction or abnormal condition is disclosed. The system is particularly adapted for use with residential or mobile home heating systems and includes a visual display panel with indicator lights with each indicator light corresponding to a particular system condition or component to be monitored. The arrangement of the light sequence on the panel corresponds to the order in which each component should be checked by a serviceman so that the condition of the entire panel, when one or more malfunctions occurs, will indicate which component should first be checked for malfunction and which other components need not be inspected. Other household components, spaces or services can also be monitored for the presence of an operating abnormality or for water, smoke, etc., by adding monitors and indicator lights to the basic heating plant system.

Abstract: A chair base utilizing a hub assembly supported by wire rod sets extending laterally outward from the hub and secured in caster sockets at their outer ends.

Abstract: The assembly includes an actuator nozzle telescopically fitted to an aerosol valve and rotatable with respect thereto. The actuator includes a skirt portion which interfits with a locking ring to maintain it on the valve. The interfitted skirt portion is preferably tilted with respect to the telescopically fitted portion of the actuator to provide an initial tilt to the aerosol valve for ease of opening. The locking ring preferably also includes means for locking the actuator by rotation of the actuator to prevent opening of the valve.

Abstract: A retractable overhead guard for use on vertical lifting machines which protects an operator of such equipment from falling objects or material. The overhead guard swings down into protective position in response to vertical load lifting movement by the machine and retracts to a non-obstructing position in response to load-lowering movement of the machine.

Abstract: The assembly includes an actuator nozzle telescopically fitted to an aerosol valve and rotatable with respect thereto. The actuator includes a skirt portion which interfits with a locking ring to maintain it on the valve. The interfitted skirt portion is preferably tilted with respect to the telescopically fitted portion of the actuator to provide an initial tilt to the aerosol valve for ease of opening. The locking ring preferably also includes means for locking the actuator by rotation of the actuator to prevent opening of the valve.