Abstract: A device for injection of a hydrocarbon feedstock into a catalytic cracking reactor comprising, from upstream to downstream in the direction of flow of the feedstock, an intake and mixing system (5) for the liquid hydrocarbon feedstock and steam, a venturi tube (6) whose entrance cone (10) is joined to said intake and mixing system (5), and a protective cap (7) that is integral with the discharge cone (14) of the venturi tube and is provided with an orifice (16) for injection of the feedstock into the reactor. The dimensions of the venturi tube (6) are such that the velocity of the mixture of liquid feedstock and steam attains therein sonic conditions at the level of the throat (13), and the rectilinear throat located between the discharge cone (14) and the entrance cone (10) is connected to such cones continuously by a curved section without making an angle exceeding about 5 degrees and about 15 degrees, respectively, with the axis of the venturi tube.

Abstract: A process for sweetening a petroleum fraction by catalytic oxidation of mercaptans contained therein in a fixed bed of the supported catalyst, with the oxidation reaction being carried out in the absence of an aqueous phase and in the presence of an oxidizing agent, and the water molecules formed during the oxidation reaction being removed from the catalyst support by washing the latter periodically with a substantial quantity of a polar solvent that is miscible with water.

Abstract: A hair treatment process and end wrap laminate for use in permanent hair waving, the process including wrapping hair to be shielded with an end wrap laminate comprising an exterior sheet of impermeable flexible plastic, an interior sheet of absorbent flexible paper and a middle layer of adhesive uniformly bonding the sheets together. Preferably the interior sheet is impregnated with a hair waving solution counteractant. The unique process and end wrap protects the hair from unwanted exposure to hair waving solution and counteracts the solution during the permanent hair waving process.

Abstract: The invention relates to an apparatus for promoting the separation and/or contact of two immiscible liquids, said apparatus comprising at least one pipe for feeding an emulsion of the two liquids to an assembly of tubes in each of which there is disposed, in the direction of its length and over at least a portion thereof, a bundle of fibers which are preferentially wettable by one of the two liquids, said assembly being connected to a decanter in which the two liquids separate, the decanter being provided with pipes for the discharge of each of the two liquids.The tubes are bounded by two walls, separated by a substantially constant distance, and by a corrugated element inserted between said walls and alternately in contact with each of them through its corrugations.

Abstract: The invention relates to a method for the continuous cleaning of the inside of a tube in which a fluid circulates, in which method there is continuously driven in rotation within the tube by the fluid a movable element, one end of which is fastened to one end of the tube through a mechanical linkage permitting it to rotate freely on itself about the axis of the tube. In accordance with the invention, the movable element comprises at least one sharp edge designed to scrape the inner surface of the tube, this edge being disposed so that during the rotation of the movable element it is, along every cross section of the tube, the portion of the movable element farthest removed from the axis of the tube.

Abstract: A robotic camera dolly system includes a motorized dolly which rolls freely across a studio floor under computer control, the dolly carrying a camera. Targets are provided on the floor at various locations from which camera shots are to be taken. The dolly is moved from one target to the vicinity of another target according to a learned sequence of movements controlled by a remote dolly computer. The learned sequence of movements is taught with the aid of a joystick, and the motions are replayed based on dead reckoning. In order to correct translational and angular errors in the position of the dolly at the destination target, optosensors are provided on the dolly for use in detecting and reorienting the dolly relative to the destination target. The open loop control of dolly movement can be taught with a control stick and the motions replayed based on dead reckoning.

Abstract: The invention relates to a formation of a release element, where the upper end and the lower end of a cylindrical or conical glass tube are closed by means of inwardly directed plugs.

Abstract: For seismic monitoring of a petroleum deposit at least one signal receiving unit is fixed to an outside of a casing pipe before the casing plate is cemented in a borehole passing through the monitored zone.At least one housing, defined by projecting elements, (longitudinal members, stops), is provided along an outer surface of the casing pipe, with the where the reception unit being embedded and fixed therein so as to protect the reception unit from shocks or compressive forces which may occur during lowering of the pipe into the well. Each reception unit comprises a support assembly with cavities for sensors, electronic cards for amplifying the signals delivered by the sensors and a sealed external case which is easy to position and which is held firmly in position by embedment in the housing. A multiconductor cable is used, for example, for connecting the reception unit to the surface.

Abstract: Process for treating an aqueous solution of acrylamide resin, characterized in that an emulsifier which is preferably nonionic or anionic, a solution of initiator comprising an organic peroxide, preferably a diperoxide, and optionally a solution of a retarder preferably consisting of a phenol derivative or an alkali metal inorganic derivative are added slowly and with stirring, preferably in the form of a pre-emulsion, to an aqueous solution of acrylamide resin monomer.

Abstract: A secondarily contained piping system has two spaced access chambers interconnected by a secondary containment pipe to provide a sealed housing for a flexible fluid supply pipe, the ends of which are disposed within the access chamber and have a connector element at each end forming a section adaptable to be interconnected to other fluid conduits, the diameter and bending radius of the fluid supply pipe and the size of the access chamber permitting the fluid pipe after uncoupling to readily be removed from the secondary containment pipe through one of the access chambers.

Abstract: A catalyst regeneration process effected in an apparatus which comprises two regeneration chambers, a heat exchanger, means for withdrawing from the second chamber a controlled fraction of hot catalyst for the purpose of maintaining the temperature in that chamber substantially at a first desirable value of less than 950.degree. C., and preferably at 910.degree. C., means for transferring this fraction of hot catalyst to the heat exchanger for the purpose of cooling it, means for the discharge of the cooled catalyst from the heat exchanger and the reinjection of the cooled catalyst into the first chamber, and means, controlled by the means for measuring the temperature in the first chamber, for regulating the supply of combustion fluid to the first chamber for the purpose of maintaining said temperature substantially at a second desired value lower than 730.degree. C. and preferably ranging from 650.degree. to 710.degree. C.

Abstract: A robotic camera dolly system includes a motorized dolly which rolls freely across a studio floor under computer control, the dolly carrying a camera. Targets are provided on the floor at various locations from which camera shots are to be taken. The dolly is moved from one target to the vicinity of another target according to a learned sequence of movements controlled by a remote dolly computer. The learned sequence of movements is taught with the aid of a joystick, and the motions are replayed based on dead reckoning. In order to correct translational and angular errors in the position of the dolly at the destination target, optosensors are provided on the dolly for use in detecting and reorienting the dolly relative to the destination target. The open loop control of dolly movement can be taught with a control stick and the motions replayed based on dead reckoning.

Abstract: The invention relates to a solid granular catalyst subject to degradation by exposure to humidity and/or oxygen, wherein each granule of the catalyst is coated with a continuous and removable protective film of a material that is impermeable to gases and moisture and inert to the constituents of the catalyst.

Abstract: A machine for unstacking and dispensing containers to be filled. The machine includes multiple sprocket wheels and chains which include retaining bars and push tabs for supporting a stack of bins and for dispensing an individual bin. A conveyor transports the bins away from the machine and a programmable controller correlates the motion of both the unstacker/dispenser and the conveyor to allow for continuous dispensing of containers automatically.

Abstract: A tree stand support platform assembly including a flexible strap or band for embracing a supporting upright and front and rear band supporting legs at opposite sides of the platform movable from and to a collapsed transport position to a raised operating position. The legs are each pivotally attached to the platform and pivotally joined to one another at their respective free inner ends. There is further provided improved means for detachably retaining slidable end portions of the flexible bands at the intermediate pivot connection of the front and rear legs with the use of an axially movable knob stem threadingly engageable with a slidable slotted retainer, and inside bracket on the platform for slidably retaining one of said legs relative to the platform.

Abstract: The invention relates to a release element for sprinkler systems comprising a cylindrical tube, where the ends of the cylindrical tube are respectively hermetically sealed by melting to a plug, where provisions are disposed jointly with the closure piece and counter piece of the sprinkler, which only exert pressure forces onto the center cylinder-shaped tube portion of the release element.

Abstract: Changes in the tide effects at a given location are measured by monitoring the respective levels of a measuring liquid in two containers which are in fluid communication with one another. The liquid levels are measured by suitable transducers including floats, and result in electronic signals indicative of the respective positions of the floats. A difference between the two signals is either computed or obtained from a differential amplifier into which the signals indicative of the respective float positions are inputted. A change in the difference between the float positions measures a change in the tidal effects at the location. The change in tidal effects is advantageously measured in conjunction with measuring leakage of liquid from liquid storage tanks, such as fuel storage tanks of filling stations, where tide effects occur and must be taken into account.

Abstract: A process is disclosed for the catalytic cracking of hydrocarbons in a fluidized bed wherein the catalyst particles are injected in a fully fluidized suspension into an elongate reaction zone. In accordance with the process, the feedstock to be cracked is injected in a state of small droplets less than 200 microns in diameter countercurrently to the flow of the fully fluidized suspension of catalyst particles.

Abstract: A process for improving the deasphalting of a heavy hydrocarbon feedstock with a solvent by subjecting the feedstock to shearing alternatively after and/or before the addition of at least a portion of the solvent to the feedstock is disclosed. Alternative means for effecting the shearing and desired ranges of shear are also disclosed.