Abstract: A device for administering oxygen and other respirating gases to a patient premeters and temporarily stores single dose quantities of respirating gas and dispenses each dose in synchronization with the patients's inspiratory cycle. A sensor produces a signal upon the onset of each inhalation and a single dose of gas is dispensed to the patient in immediate response to the sensor signal.

Abstract: Vitamin C is added to candy-like comestibles requiring high cooking temperatures in the form of powdered ascorbic acid and/or sodium ascorbate at a precise time in the cooking cycle. The Vitamin C is rapidly dispersed in the hot fluid candy and the admixture is cast into molds and rapidly cooled thereby stabilizing ascorbic acid within the crystalline lattice of the candy and avoiding any significant Vitamin C loss through oxidation or decomposition.

Abstract: A safety device to warn the pilot of a hang glider if take-off is attempted without the glider hook-up strap being connected to the pilot's harness includes two sensors arranged in series with an alarm. One of the sensors is arranged to close a circuit when the glider is positioned in a take-off attitude and the other sensor closes a circuit when the free end of the hook-up strap is disconnected from the pilot's harness. The alarm is activated when both circuits are closed.

Abstract: A canopy provides sun protection for the occupant of a recreational chair. The canopy is slidably mountable on the chair back and can be positioned immediately to any desired angle by simple but effective tension applying means.

Abstract: A method and apparatus for introducing oxygen or a saline solution directly into the trachea in order to facilitate respiration. The apparatus includes a sharp pointed magnetic stylet, a similarly shaped rounded end magnetic probe, and a radiopaque flexible bulbed end plastic catheter tube with three equally spaced axially embedded memory wires.The small diameter catheter tube and the incorporated magnetic stylet is inserted through the wall of the throat and thorugh the flesh and wall of the trachea between the second and third tracheal rings.The retraction and removal of the magnetic stylet causes the expansion of the catheter and locks the tube end inside the tracheal wall. The catheter tube is the vessel for the conveyance of oxygen or a saline solution into the trachea. Insertion of the magnetic probe into the catheter tube causes the contraction of the catheter tube end and allows same to be removed and reinserted as necessary.

Abstract: A repair assembly for broken or leaking risers in underground irrigation systems is provided. The repair assembly is adapted to be inserted into a hole through the wall of a buried water distribution line and is held in place by locking tangs engaging the interior surface of the distribution line and by a locking ring flange disposed about the exterior of the assembly and bearing on the exterior wall of the distribution line.

Abstract: Methods and structures are provided for filling cryogenic flasks such as those used in portable, liquid oxygen therapy systems. A circular baffle plate is disposed within the flask neck near the bottom thereof and is sized to allow a narrow annular opening between the baffle edge and the flask neck wall. The liquid fill line is extended downwardly through the baffle plate, so as to discharge liquid below the plate. The baffle plate functions to provide a gas-liquid separation zone within the flask neck; to provide a radiation shield while liquid is present in the flask; and to provide a gas trap to minimize liquid venting in case of tip-over.

Abstract: A pre-packaged explosive charge of the type made up of modules having a threaded male coupling end and a threaded female coupling end is loaded into a bore hole by use of a plug fitting threadably attachable to the uppermost charge module. The fitting is constructed so that the torque required for disconnection of the fitting from the module is substantially less than the torque required to separate one module from another.

Abstract: Falling liquid droplets of a chemical agent are detected by providing a droplet collector assembly which includes an air permeable surface member disposed to intercept falling droplets and adapted to cause vaporization of the intercepted droplets into a sample air stream drawn through the surface member. The sample air stream containing droplet vapor is then led into the sample inlet of a vapor detector.

Abstract: The fluid contents of a closed container, particularly a closed cryogen container, are gauged by lifting the container through a lever arm one end of which acts upon a pressure transducer coupled to indicating means while the other end of the arm is spring biased to suppress the empty or tare weight of the container.

Abstract: An ornamental star display device adapted for use with strands of decorative electric lights having clip attachment means. The star is formed of a plurality of identical point members each of which is formed in the shape of an open-base triangle having sides terminating in outwardly extending leg portions. Brace members, one for each point member, form the base of each triangular point member when the display device is assembled. Fastening means securely hold a brace end and a leg portion in a parallel, superposed relationship with a side of each point member to form a rigid display device capable of easy assembly and disassembly.

Abstract: Soluble polymers are fractionated according to molecular weight by cryogenically comminuting the polymer and introducing the polymer particles, while still in the active state induced by cryogenic grinding, into a liquid having a solvent power selected to produce a coacervate fraction containing high molecular weight polymer species and a dilute polymer solution containing lower molecular weight polymer species. The coacervate may be physically separated from the solution and finds use in the production of antimisting jet fuels and the like.

Abstract: High molecular weight, water soluble polymers are dissolved to form liquid solutions at relatively low polymer concentrations and solid, water-plasticized composites at higher polymer concentrations by admixing finely divided polymer particles with ice particles at temperatures below, and preferably far below, the freezing point of water. The admixture is then allowed to warm causing the ice to melt and the polymer to dissolve in the water.

Abstract: Means are provided to drill generally horizontal bores through heterogeneous fill and hard strata. A carriage providing power means to rotate a spindle is mounted on a generally horizontal track and is adapted to move longitudinally along the track. Swivel means about the spindle are provided with means to introduce a combined gas and liquid stream, suitably air and water, into a drill pipe connected to the spindle and through an impact drill mounted at the end of the drill pipe to power the drill and to flush cuttings from the hole.

Abstract: Chemically reactive liquids such as catalyzed monomers and prepolymers are mixed with finely divided solids to form a homogeneous blend by chilling the liquid to a temperature below its solidification point, forming it into finely divided solidly frozen particulates, chilling the finely divided solids to a temperature below the solidification temperature of the reactive liquid and mixing the materials together without allowing the temperature to rise to the liquid solidification point. The admixture may then be formed into a permanent shape by warming to a temperature whereat the frozen liquid melts and the liquid is caused to react.

Abstract: Freezing of ice on quick connect couplings during transfer of a cryogenic liquid, such as liquid oxygen, from one container to another is prevented by providing a cup-like shield means encircling the body of the coupling. Cold, dry purge gas from the container being filled is introduced into the shield base at a point remote from its open end while the cryogenic liquid is passing through the coupling.

Abstract: A heel-counter stabilizer is provided for attachment to an athletic shoe having a heel member of resilient material. The stabilizer is adhesively bonded to the exterior of the shoe in a manner which provides both vertical and longitudinal support and bracing between the shoe counter and heel member. The stabilizer is particularly effective to counteract counter "run-over" and heel wear caused by either pronation or supination. It also helps to prevent compression and blowout of the midsole and heel wedge.

Abstract: A rod wrench is provided for use with hollow stem auger drills of the type wherein auger sections are connected through a key system and secured together with a fastener. The wrench comprises a body portion which seats on and connects to the top of an auger section, a slip jaw riding in an inclined jaw guide and extending through the wrench body wall, and a pair of pipe gripping jaws at the top of the wrench body. One of those jaws is fixed to the wrench body while the other is relatively movable so as to releasably grip a drill rod passing therebetween.