Abstract: The invention relates to security paper and in particular to a method for the manufacture of security paper that is provided with high-quality watermarks. In particular such a method comprises forming a papermaking suspension comprising cellulosic fibers and polyvinyl alcohol fibers, which polyvinyl alcohol fibers are soluble in water at temperatures of from 95 to 100 degrees C, dewatering the papermaking suspension through an emboseed wire mesh or other embossed means, wherein the embossing creates a profile of peaks and troughs corresponding to the light and dark areas of the watermark, and the formed paper after dewatering with the watermark feature is thereafter dried to provide the resulting security paper.

Abstract: The pressure jaw (1) for a compression device to install floor elements in a diagonal manner relative to a rectangular floor area is generally triangular in shape, the longest side providing an edge part (2) bent downwardly to press against the outer edge of a floor element (4) whose outer edge is cut diagonally, preferably at an angle of 45.degree., in relation to the longest side of the floor element. On the two legs of equal length the pressure jaw includes edge strips (5) bent upwardly each of which serves to couple with a customary compression device that is designed to install floor panels parallel to the wall and which, for example, incorporates at the end of a compression belt (7) a similarly modified pressure jaw 6 which can be coupled with a pressure jaw (1) by the engaging of the edge strips (5).

Abstract: In an internal combustion engine with an exhaust gas turbocharger comprising a charge-air pipe and an exhaust gas recirculation pipe for a partial stream of the exhaust gas, a nozzle-diffuser unit is provided in the charge-air pipe, into which unit the recirculation pipe opens in a passage of restricted cross-section. In order to achieve high turbine efficiency as well as high exhaust quality, it is provided in the invention that the exhaust gas turbocharger be configured at least as a twin-entry unit, and that at least two exhaust gas flow paths be conducted separately to the entrance into the exhaust gas turbocharger, and that an exhaust gas recirculation branch depart from each exhaust gas flow path, and further that a control valve be positioned in each recirculation branch for regulation of the exhaust gas recirculation.

Abstract: A coating solution for forming a selectively transmitting film which is effective for cutting off ultraviolet radiation in a wide range of wavelengths up to about 400 nm, maintains its stability and effect for a long time, has also a power of cutting off heat rays and a controlled transmittance of visible light, has any desired color produced by the addition of fine particles of an appropriate inorganic substance, and is applicable to glass in any existing building, or the like by a simple and inexpensive method using an appropriately selected binder, and a selectively transmitting film and a selectively transmitting multilayer film which are formed from the solution. The solution is a dispersion of fine particles having an average diameter of 100 nm or less of at least one of ruthenium oxide, titanium nitride, tantalum nitride, titanium silicide, molybdenum silicide, lanthanum boride, iron oxide and iron hydroxide oxide.

Abstract: A unitary removable shield, serving the same function as a film or coating of electrically conductive material applied over the conductive cavity of a universally adaptable corona generating or charging device, is inserted into the cavity to adsorb and desorb nitrogen oxide species produced by negative corona. The unitary removable shield has a generally U-shaped cross-sectional configuration which fits within the cavity. The shield may be retained in the housing by engaging and conforming to the shape of the conductive cavity in a tight frictional fit so as to make electrical contact with the conductive cavity. The shield may also be retained in the housing by tabs or pressure-loadable clips which engage portions of the housing.

Abstract: In a method for producing a sintered metallic product, a green compact of a powdery metallic alloy is enclosed and constrained in a rigid mold to suppress the swelling of the green compact during sintering.

Abstract: A loudspeaker horn has straight wall section and a curved wall section. The straight wall section has diverging walls defining a coverage angle and the curved wall portion is connected to the straight wall portion at a point tangent thereto, and has a proximal end disposed perpendicular to the plane of the throat entrance. At least one coverage angle in orthogonal planes has a common apex in the plane of the throat entrance and along the horn axis.

Abstract: A twin-cylinder impeller pump is disclosed. In the above pump, the twin-cylinder runner (3, 4) is provided with an elastic sealing means for removing any gap from the junction between the runner and the throat of a pump casing (10) with the runner being positioned at its upper or lower dead point. In a transmission gear mechanism of the above pump, the drive shaft does not directly engage with the driven shaft, but indirectly engages with the driven shaft through two idle gears (14, 17). In each of the idle gears (14, 17), both a circular concentric gear (14, 17) and an elliptical eccentric gear (15, 18) are commonly mounted to a shaft, thus forming a twin gear. The two elliptical eccentric gears (15, 18) engage with each other, while the two circular concentric gears (14, 17) engage with the drive and driven gears (13, 16) respectively, thus effectively reducing operational noises and vibrations during a pumping operation.

Abstract: The invention relates to an apparatus for the simultaneous welding of at least four plastic profile sections cut for mitre joint for window or door leaves or frames with four welding heads which are arranged moveable relative towards one another, with stops being provided in the zone of each welding head in order to outwardly support the ends of the profile sections and with spacer elements being provided which support the surfaces of the profile sections cut for mitre joint. A precise arrangement of the corners is achieved in such a way that the spacer elements are outfitted with springs.

Abstract: Cascaded waveguide sensors with different sensitivities to temperature and strain produce independent temperature and strain measurements. In one embodiment a first sensor is formed of a first optical material having a corresponding first sensible thermomechanical response and a second sensor is formed of a second optical material having a corresponding second sensible thermomechanical response. The first and second thermomechanical responses are sufficiently different so as to produce independent temperature and strain measurements. Particular embodiments employ intrinsic or extrinsic Fabry-Perot interferometers (IFP, EFP),sensors, in-line fiber etalon (ILFE) sensor and a fiber-optic Bragg grating.

Abstract: The invention realizes a baffle for a reactor for liquids purification, said reactor comprising: a tank containing the liquid to be purified; a plurality of injectors suitable for introducing in the tank said liquid to be purified; one or more rotating blades arranged inside said tank, suitable for keeping agitated said liquid to be purified. Said baffle is applied to at least one of said one or more blades and it is formed of a disk supplied with a plurality of through openings suitable for favoring, during the rotation of said blades, the passing of the descending flow of liquid during the purification, and of the ascending flow of aeriform substance dispersed in said liquid, in order to favor the stabilization of the turbulent motion of the liquid itself in correspondence with said blades.

Abstract: In an internal combustion engine with externally supplied ignition, the compressed air-fuel mixture is ignited, at least partially, with the use of at least one laser beam, which is introduced into a combustion chamber via at least one optical waveguide and is focused onto an ignition location. In order to achieve a simple and compact design, the optical waveguide is positioned in a sealing element bounding the combustion chamber, wherein the sealing element is located in a cutting plane through the combustion chamber and preferably is constituted by a cylinder head gasket.

Abstract: A scaffolding mast with at least two profile bars (1, 2, 3) which are attached to the edges of a triangle or square forming the cross section of the scaffolding mast. Two of the profiles (1, 2, 3) are connected to one or two of three connecting plates (10, 17, 18) forming the side of the triangle or square. Two grooves (4-9) are provided on the inner area of each of the profile bars (1, 2, 3) in which 90.degree. offset edges (13, 14) of the connecting plate (10, 17, 18) are inserted and fastened at the place of insertion (FIG. 1).

Abstract: The present invention relates to an electric motor starter for starting motors rotating at synchronous speed. The starter comprises a programmable logic circuit having input ports for receiving control commands intended for the electric motor and supervisory signals reporting the operating state of the motor, and output ports for drive signals intended for the electric motor and information signals reporting the operating state of the motor. The logic circuit comprises stored therein various logical motor starter connections for various electric motors. Further the starter comprises means for selecting for use one of the various motor starter connections stored in the logic circuit; and connection means for connecting a control according to the drive signals to the electric motor.

Abstract: The present invention relates to a pressure control valve for regulating the oil pressure in an oil supply system preferably of an internal combustion engine, with a first working chamber which is in connection with an oil line, with a second working chamber which is in connection with an oil supply line, and with a control slide valve which is substantially movable by the oil pressure in the first working chamber in order to release a throttling aperture on exceeding a first predetermined oil pressure through which oil is released from the second working chamber to a recirculation system.

Abstract: The invention is a plastic cap for liquid containers, comprising a main body, which is essentially cylindrical, and an element (20) for dispensing the liquid. The upper part of said dispensing element is essentially circular, level and hinged to the main body, while its lower part is socle-shaped and is characterized by a partially cylindrical base surface (27), covered by a layer of soft material (270) sliding in the corresponding groove (30) belonging to the main body (1). Said layer of soft material (270) serves as a seal when the dispenser is open. When, on the other hand, the dispenser is closed the cylindrical projection (8) of the hole (7) of the main body, coupled with the layer of soft material (270) present on the socle, fits into the groove (30) in such a way as to ensure the seal between the dispenser and the cap body in any case.

Abstract: For automatically adjusting the tilting resistance of a chair seat (6), which is tiltably attached on a base column (1) via a horizontal shaft provided across the chair, and where tilting resistance and springing are determined by two spring elements (13, 14), one spring is compressed by tilting in one direction and the other spring compressed by tilting in the opposite direction. The spring force is adjustable. In order to be able to adapt the tilting resistance to the seat's/backrest's setting automatically, the spring elements (13, 14) are connected to the seat/backrest by mans of a connecting element which directly influences their spring force by an adjustment of the seat and/or backrest.

Abstract: A single trip whipstock assembly which can be run into a well, set, and operated from a window in the well casing in a single trip includes a milling tool (5) attached to the upper end of a whipstock (6) to the lower end of which is attached a packer (7) or anchor which can be set by appropriate means prior to detachment of the mill from the whipstock to initiate window formation. The packer may be hydraulic and may be set by means of a setting tool (4) located above the mill (5) and connected to the packer by a hose (21). The mill (5) incorporates circulation ports which are initially isolated from the central chamber thereof to permit flow of hydraulic fluid from the setting tool to the hose (21) via the interior of the mill. Once setting has been effected, the hose (21) is severed, permitting the piston of the setting tool to operate a flow diverter within the mill and open the circulation ports to the interior of the tool for subsequent drilling mud circulation during milling operation.