Abstract: The present invention relates generally to improvements in processes and apparatus for effecting solvent extractions using liquefied gas or gases in the supercritical state as the solvents and specifically to continuous processes for carrying out such extractions at high pressures. Further, the present invention relates to an apparatus which is a long vertical cylinder of relatively small diameter, wherein the solvent gas and the material to be extracted are continuously circulated through the long vertical reactor.

Abstract: A hemorrhoid supporting pad, preferably associated with a seat cushion assembly, is formed from a flexible envelope partially filled with a fluid. The pad is positioned beneath a seated person. Portions of the envelope extend beneath the ischial tuberosities of the seated person, which causes the fluid in the envelope to flow into the central region of the envelope, where the fluid is forced upwardly beneath the anus to support the hemorrhoid.

Abstract: The addition of the metal drier to the phenolic urethane binder enhances the breakdown of the binder when the system is subjected to the elevated temperatures caused by pouring the molten metal into the mold and enhances the subsequent shake out of the sand from the cores and molds.

Abstract: The present invention relates to a seat cushion for the human body which comprises a pad comprising a flexible envelope containing a fluid filling material, which pad is adapted to be used in combination with a shaped tray. In the preferred embodiment, the envelope of the pad is an extensible elastomeric material or the upper surface of the pad comprises excess material, and the pad is partitioned or segmented to limit the flow of the fluid filling material in selected areas of the pad.

Abstract: A free-flowing solid particulate composition containing a polyamine dispersed on a finely divided, high surface-area silica or silicate adapted to be mixed with dry hydraulic cement to reduce fluid loss during well cementing. Preferably, polyethylenepolyamine or polyethylenimine is dispersed on a high surface-area silica. Improved well cementing in porous media is achieved by mixing the composition with dry hydraulic cement, adding water to the mixture to create a slurry, and pumping the slurry down the well casing into contact with the porous media. The composition acts as a fluid loss control agent at temperatures below 100.degree. F. without sulfonated polymers.

Abstract: A foundry binder for preparing shaped foundry products, said binder having improved breakdown, which binder comprises:(a) a resin component organic resin alkyd resins, furan resins, shell phenolic resins or acid setting phenolic resin and(b) a catalystic amount of a metal drier.

Abstract: An emulsifier adapted for use in a nutritive oil-in-water emulsion suitable for parenteral administration is produced by extracting vegetable lecithin with alkyl alcohols having from 1 to 3 carbon atoms, or mixtures thereof, followed by fractional precipitation at specific temperatures and concentrations effective to cause the removal of toxic materials. The alcohol soluble phospholipid fraction produced by the process contains an increased level of phosphatidyl choline and reduced levels of phosphatidyl ethanolamine, inositol phospholipids, phosphatidic acid and glycolipids.

Abstract: The present invention concerns an ice cream machine for home use. The ice cream machine of the invention having a mixing auger and a mixing cone uses a unique drive system to vertically drive the cone to engage the auger and mix the products contained within the cone. An arc gear, pinion gear and a rack gear are provided in the drive train of the invention and are intermeshed with each other and interconnected with a manually operable lever arm to accomplish the desired vertical drive of the mixing cone. This configuration allows increased leverage and efficiency in the vertical drive movement. Also provided herein are various size reduction and easy cleaning features. Finally the unique gear drive train allows for a steady extrusion of a deliciously mixed, flavored ice cream or ice milk product.

Abstract: An empty or loaded railroad brake control device includes a valve adapted to communicate a brake cylinder pressure chamber with a supplemental volume reservoir when the railroad car is not fully loaded. The valve is held in the closed position by a spring, but when a car is less than fully loaded, a load sensing device determines the relative position of the sprung and unsprung portions of the vehicle and transmits this information to the valve which opens to communicate the supplemental volume reservoir with the brake cylinder pressure chamber. The valve includes a pressure release valve, adapted to release the pressure from the supplemental volume reservoir when the brakes are released. An overpressure valve permits partial build-up of the pressure in the brake cylinder before the supplemental volume reservoir is connected.

Abstract: The present invention comprises a lug nut which has two separable portions connected by a frangible neck, wherein a first portion engages the threads of the stud, and a second portion provides a surface adapted to engage a wrench so that the lug nut may be driven into the stud. When the stud-engaging first portion has been threaded onto the stud and sufficiently tightened, continued application of torque cause the frangible, wrench-engaging second portion to shear off from the stud-engaging first portion. The stud engaging portion has an annular notch which is adapted to engage a snap ring located in the wrench-engaging portion. After the wrench-engaging portion is severed from the stud-engaging portion, the wrench-engaging portion is then reversed and positioned onto the stud-engaging portion. When so positioned, the snap ring engages the notch, which rotatably secures the wrench-engaging portion to the stud engaging portion.

Abstract: A golf training device, preferably simulating a conventional golf ball with respect to size and shape, is provided with an opening to receive the shank of a specially designed spike in order to removably attach the training device to a golf shoe. A specially designed spike has a cylindrical shank with at least one annular rib, spaced from the flange portion, which functions to frictionally engage the training device to the golf shoe spike.

Abstract: A system is described for use in a semiconductor memory for rapidly transferring data between a plurality of successive memory locations and a data output buss. The system includes a plurality of data latches for storing data derived from successive locations in memory, and a corresponding plurality of serially coupled decoders, each associated with one of the data latches. In response to an address input, one decoder is enabled for causing its associated data latch to output its stored data to the data buss. The latter decoder then disables itself and enables the next decoder so that a second latch outputs its stored data. The process continues with each decoder disabling itself and enabling the next decoder so that the data latches are caused to sequentially output their stored data.

Abstract: A method is described of preparing a diaziridinyl diaminobenzoquinone-N, N'-dicarboxylate compound selected from dialkyl, di(arylalkyl), or diphenyl diaminobenzoquinone-N, N'-dicarboxylates, said method comprising:reacting a diaminohydroquinone of the formula: ##STR1## wherein X is selected from the group consisting of chlorine, fluorine, bromine, iodine or alkoxy groups with a molar excess of a pyrocarbonate di-substituted with alkyl groups, arylalkyl groups, or phenyl groups to produce a dialkyl, a di(arylalkyl), or a diphenyl diaminohydroquinone-N,N'-dicarboxylate;oxidizing said hydroquinone to the respective benzoquinone;reacting said benzonquinone with an aziridine having no substitution on the nitrogen and having substituents on the carbons selected from the group consisting of hydrogen and alkyl; andrecovering the resultant diazirindinyl diaminobenzoquinone-N,N'-dicarboxylate.