Abstract: An aqueous coating solution is sprayed into the interior of the reactor. After the aqueous coating solution has been sprayed, steam is injected and condensed within the reactor. Upon polymerizing a vinyl chloride-base monomer composition in the reactor after having been treated, the formation of deposits of polymer on the internal surfaces of the reactor is substantially reduced and even suppressed.

Abstract: A vacuum sewerage transport system having a vacuum interface valve apparatus utilizing s sub-surface in-pit breathing, drainage and venting apparatus for a differential pressure controlled sensor-controller unit.

Abstract: An electronic generator for air purification includes a molded plastic housing having a flat floor and a cover. The housing has an air inlet and a fan pulls air in through the inlet and blows it out through remote outlets. Within the housing and mounted on the floor there is a concave-convex dome made of non-conducting material and having a non-conducting outer surface. The concave surface is coated with a conductive material, and high voltage providing transformer and rectifier structure are mounted within the dome in an inaccessible position. A negative high voltage potential is applied to the conducting concave surface to establish a negative electrostatic charge over the convex surface. The air moving through the housing passes over this convex surface and negative ions are produced.

Abstract: In a lens for an optical recording/reproducing apparatus of the invention, a refractive index n(r) at a position of a distance r from an optical axis along a radial direction is given by:n.sup.2 (r)=n.sub.O.sup.2 {1-(g.multidot.r).sup.2 +h.sub.4 (g.multidot.r).sup.4 +h.sub.6 (g.multidot.r).sup.6 +h.sub.8 (g.multidot.r).sup.8 + . . . }and the following conditions are satisfied:R.sub.2 =.infin.3.0.gtoreq.R.sub.1 /(1+0.75S).gtoreq.0.81.40.ltoreq.n.sub.O .ltoreq.1.87-0.6g.multidot.S0.75.gtoreq.g.multidot.f.gtoreq.0.45wheren.sub.O : refractive index on the optical axisg, h.sub.4, h.sub.6, h.sub.8 : coefficientsR.sub.1 : radius of curvature of a first surfaceR.sub.2 : radius of curvature of a second surfaceS: working distancef: focal distance of an overall optical system at an image side.An optical recording/reproducing apparatus of the invention has a lens as described above as an objective lens.

Abstract: A system for handling orders including a sheet defining a plurality of delineated spaces. Indicia are displayed in the spaces for identifying a plurality of items available for ordering, and a pencil or other marking device is used for placing marks in selected ones of the spaces. The sheet is used in conjunction with a cash register or similar device, and the delineated spaces on the sheet form a pattern corresponding with the pattern of keys on the register. In use, the operator of the register will depress or otherwise operate the keys of the register in only those positions bearing a mark. In this fashion, the register will record the particular items ordered, and the sheet can then be used for order-filling and verification after removal from the face of the register.

Abstract: An apparatus for retaining a liquid phase which may include solid materials between a fixed wall and a rotary member passing therethrough. A seal is thereby provided which eliminates friction while accepting limited leakage of the liquid phase. The apparatus includes:(a) a partition member which is fixed with respect to the rotary member and the periphery of which has at least one planar surface which is perpendicular to the axis of rotation of the rotary member. This forms a bearing surface, and a surface which is concentric to the axis and which is joined to the bearing surface;(b) a retaining ring which is positioned on the planar surface and the concentric surface of the partition member, and which is fixed with respect to the rotary member; and,(c) a collar joined to the wall and having an inside diameter that is at least equal to the outside diameter of the ring.

Abstract: The present invention relates, by way of new industrial products, to the N-alkyl-3-phenyl-1,2,5,6- and 1,4,5,6-tetrahydropyridines of the formulae ##STR1## wherein R is a C.sub.2 -C.sub.4 alkyl group, and their addition salts. These new products are useful as pharmaceuticals, especially as sedative agents.

Abstract: The invention relates to a process for controlling a rolling mill having oblique rolls which is used for rolling metal rods or tubes, and to the rolling mill for carrying out the process. The rolling mill according to the invention comprises at least three rolls distributed round the rolling axis, each of the rolls having a profile generated by revolution of decreasing cross-section, the roll axes not intersecting the rolling axis, and each of the rolls exerting on the product a pressure which permits helicoidal rolling to be carried out. The process involves controlling the forward feed while keeping the angle of inclination of each of the axes of revolution of the rolls constant relative to a secant straight line, the so-called control axis, which is a straight line perpendicular to the rolling axis and intersecting said rolling axis and which traverses the zone of contact between the roll and the product to be rolled.

Abstract: An improved closed apparatus for conveying powder materials from a storage region to at least one region to be supplied. The apparatus includes at least one horizontal conveyor formed by a lower gas flow duct, an upper duct for flow of the powder and gas, and a porous wall separating the ducts. At least one conduit supplies gas to the lower duct, permitting the establishment of a pressure Pf. The conveyor is provided with at least one balancing column the height of filling of which balances the pressure Pf of the potential fluidization gas for the purpose of potentially fluidizing the material filling the conveyor.

Abstract: The method consists of a cold pilger mill to effect a recoil movement of the chuck upstream followed by a return to its original position, at least once per rolling cycle. The period during which the mandrel is withdrawn with respect to its rolling position is used advantageously for example to carry out the rotation of the mandrel and/or to cause a lubricant under pressure to circulate between the mandrel and the pipe. The method is applied particularly to the rolling of pipes with a large section, with high reduction rates.

Abstract: A remote cutting tool for insertion into an underground sewage pipe for trimming branch line stub ends that extend into the sewage pipe. The cutting tool comprises a sled adapted to be drawn through the interior of the pipe by cables attached thereto. A cylindrical cutting bit is driven by a hydraulic motor, the motor and bit being retained on the sled through a hydraulic jack ram. The jack ram facilitates the axial movement of the motor and bit with respect to the sled as required to effect branch stub cutting. Expandable pneumatic sleeves are provided on the sled which, when inflated, lock the sled in fixed orientation in the pipe prior to each cutting operation. A guide member is positioned over the pneumatic sleeve adjacent the point of intended cutting to deflect the sleeve in the opposed direction and to align the cutting bit in close proximity to the sewer pipe wall at the point of stub pipe entry.

Abstract: Apparatus for inscribing characters or other symbols onto moving articles or substrate. The symbols or characters are defined by a matrix having a predetermined number of rows and columns. The apparatus includes a plurality of individual lasers, each dedicated to write a predetermined character row. Columns are written in sequence as the article passes the laser head. Light energy from the lasers is directed by mirrors to an exit lens which focuses the laser beams onto the articles or substrate to be marked. Separate laser mirrors provide reduction in laser beam spacing thereby facilitating a correspondingly foreshortened laser beam path. The lasers are arranged into two groups and interleaved to form the desired character row spacing without mirror overlap or shadowing.

Abstract: A process for the purification by selective separation of uranium and/or molybdenum from zirconium and/or hafnium among other impurities contained in an amino organic phase by bringing them together with an aqueous sulphuric re-extraction solution, characterized in that, with a view to increasing the separation factor of the zirconium and/or hafnium on the one hand and the uranium and/or molbydenum on the other hand, the aqueous sulphuric re-extraction solution contains at least one alkali or equivalent sulphate.

Abstract: A rotor is provided for use in combination with a valve and sleeve to function as a valve attached to an actuator. The rotor is comprised of a rotor body containing the drive section with the necessary elements to turn the rotor within the sleeve, and a rotor stem with ports to coact with complementary ports in the sleeve to form variable orifices to control fluid flow, and a flexible means for connecting the rotor stem to the rotor body.

Abstract: A liquid dispensing apparatus is provided for use in combination with rigid or semi-rigid inverted liquid containers. The liquid dispensing apparatus is comprised of a base portion that provides a stable platform for the combination, a coupling extending up from the base portion that is inserted into the neck of the open liquid container to provide a seal around the neck and to provide an opening to discharge the liquid, and a spigot with a valve in communication with the opening to control the flow of liquid. A stabilizing arm extending from the base portion contacts the bottom of the liquid container and, in conjunction with the coupling, secures the liquid container to the liquid dispensing apparatus. The base portion is also designed to contain any liquid that may leak from the coupling.

Abstract: In a distortion inspection apparatus of a glass plate, a light and dark contrast pattern is sensed by an image sensor through a glass plate. The number of bits corresponding to a light or dark portion is detected from bipolar image data which are divided into a plurality of bits along each of parallel scanning lines assumed upon a surface of the glass plate. Then, a distortion state of the surface of the glass plate is discriminated in accordance with the differences among the thus detected number of bits and a reference value thereof. In such an arrangement, quantitative distortion discrimination can be performed.

Abstract: This invention relates to an adjustable chin strap assembly for use with athletic helmets. The chin strap assembly consists of a flexible piece of material which forms the chin cup, two support straps slideably attached to this chin cup, two adjustment pieces through which the support straps slideably intersect, and a set of four slideable snaps which releasibly fasten the support straps to an athletic helmet. The attitude of the flexible chin cup can be adjusted by sliding the adjustment piece along the lengths of the support straps to each side of the chin cup thereby allowing for maximum user comfort.

Abstract: A process for the recovery of the uranium present in phosphoric acid produced by a wet process in (A) by means of a suitable solvent (L.sub.9), which is carried out after separation of the gypsum in (B) formed in the attack operation, and elimination of the solid materials which are still in suspension, characterized in that, in order to avoid the formation of dross in the course of the operation of extracting the uranium which is previously reduced in (D), the step of eliminating the solid materials which are still in suspension is effected by a final solid-liquid separation operation in (C) and/or in (E), prior to extraction of the uranium in (F), in the presence of an added fraction of gypsum (S.sub.22) and/or (S.sub.23) resulting from the production of H.sub.3 PO.sub.4.

Abstract: An element of the invention focuses and projects a parallel or substantially parallel light beam onto an optical information recording medium. The element consists of a transparent columnar body having a convex surface as the input surface and a flat surface as the output surface.