Abstract: In a laser-doppler-apparatus, the size of moving spherical particles in a fluid flow is determined by crossing two spatially separated laser beams (15, 16) to intersect each other under a given angle (.theta.) in a measuring volume passed by a part of the fluid flow. By means of two photoelectric measuring detectors (17, 18) arranged in different spatial positions outside the measuring volume, scattered rays from a moving particle are detected in the form of doppler signals having different phase. The particle size is determined by generating a resulting phase difference signal (.phi..sub.M) from the signals from the two measuring detectors (17, 18). By combining the signal from one measuring detector (17) with the signal from a reference detector (19) positioned between the two measuring detectors, a phase reference signal (.phi..sub.R) is generated to indicate whether the resulting phase difference signal (.phi..sub.M) has been caused by a phase difference between the doppler signals exceeding 2.pi..

Abstract: A smoke grenade comprising a launching device (1), an instantaneous smoke device (2) and an IR-smoke generator (3) is provided with a casing (4) which can be deformed to guiding/supporting fins (4').

Abstract: The invention relates to a method for connecting reaction sintered silicon carbide parts to iron and other metal parts of importance is that the connection involves the use of a binder comprising a mixture of silicon and a metal and preferrably it is a eutectic mixture.

Abstract: By a pressure-relieving bandage there is arranged a flexible, non-adhesive, waterproof film (2) between a foam layer (1) and a pressure-sensitive adhesive layer (3) containing a hydrocolloid.This will ensure that the expansion of the adhesive by moisture absorption will preferably take place in a direction away from the film (2) and in towards the body. The bandage will therefore not so easily let go of its adhesion to the skin since there is no horizontal displacement of any importance.Moreover, the foam layer is provided with cuts (5) so that large or small sections (6) can be removed from the bandage. The plaster can therefore be used as a pressure-relieving bandage.For prophylactic use it is advantageous to insert a micro-porous tape (7) between the foam layer (1) and the film (2) and to leave out the adhesive layer (3). Instead the underside of the tape (7) and the film (2) is adhesive and protected by a removable protective cover (4).

Abstract: A three-layer laminated panel comprising a plane polyurethane foam sheet having outer facing sheets of metal bonded thereto with adhesive, as well as a method for the production of such a panel are disclosed.

Abstract: A gate for adjustably splitting a flow of granular material comprises an inlet pipe (1) which discharges onto a pivotal baffle plate (5) in an intermediate piece (2) overlying a circular plate which is formed with openings leading through respective hoppers (3) to respective ones of two or more outlet pipes (4). The baffle plate spreads the flow of material and pivoting of the baffle on a vertical shaft (6) adjusts the discharge of material through the various openings.

Abstract: A gas swept tube mill has a rotary shell (1) supported on a bearing (5) by a slide ring (3), which is reinforced by a stiffening web plate (4). Ground material and gas pass out of the mill shell through a sieve plate (10) and openings (8) in a frustoconical connecting section (12) into a stationary casing (9). The wider end of the section (12) is of similar diameter to the shell (1), to which it is fastened, and the narrower end of the section (12) is fastened to a drive shaft (7) for rotating the shell (1).

Abstract: A protective triggering system protects the thyristor switch element of a pulse generator circuit controlling a pulse operated electrostatic precipitator. The protective triggering is initiated for every pulse in the area around passage of the pulse current from positive to negative, its object being to supplement the spark-over released retriggering system so as to ensure that spark-overs occurring immediately after the current passage across zero do not cause renewed thyristor current in the absence of a triggering signal.

Abstract: The invention relates to a hydrostatic power steering unit of the type having a gerotor gear set forming a metering motor and a valve unit for routing pressurized fluid from an inlet port selectively via expansible chambers of the gerotor gear set to either one of two motor ports while connecting the other one of the motor ports to an outlet port. The housing of the valve unit, which has inner and outer rotary sleeve members, is arranged adjacent the gerotor gear set. A cardan shaft connects the outer sleeve member to the gerotor star member, a gear head connected to the adjacent end of the outer sleeve is disposed internally of the inner sleeve member. Supply and drain ports and motor ports connectable to an external servomotor are provided in a cover plate which is fastened to the gerotor gear set on the side thereof opposite from the valve unit.

Abstract: A demountable coupling device for submarine pipeline sections (33,34,35) where one or a plurality of conduits can be connected together on the seabed by a remotely controlled operation without the use of divers or guidewires. The connection of the pipeline sections, which are provided with square flanges (2), takes place by a vertical movement of the coupling unit (1) of the coupling device, which is provided with a groove (1') at each of its ends, the grooves being adapted for reception of the largely vertical portions of the pipeline flanges (2) when in an operating position on the seabed. The casing (1) of the coupling unit contains all components which are necessary for the connections.

Abstract: A kiln plant for producing cement of other clinker from chloride-containing raw material has a kiln (2), a suspension preheater (4,5,6,7) through which kiln exit gas passes to a precipitator (8), and a by-pass conduit (11,14) through which a portion of the kiln exit gas passes via an air quenching unit (12) to the precipitator without encountering any further precipitator.

Abstract: In a method of grouping, orienting, and packing articles such as ice-cream cones, the cones are advanced in rows on conveyors while being grouped and oriented, and are subsequently gripped in groups by a gripping device. Through suction heads gripping their respective groups, the gripping device is adapted to situate the groups in an open packing box. To permit the process to be carried out at a relatively high speed and low noise level, the articles are initially advanced in a first advancing direction while lying directly on a first endless and continuously running conveyor. They are then received in groups by a second endless and continuously running conveyor, which lifts the cones into contact with the suction heads of the gripping device while the mutual distance of the cones is being adjusted. The transfer of the cones from the first conveyor and through the second conveyor to the gripping device is carried out without stopping the advancing movement of the cones.

Abstract: A pneumatic conveyor for particulate material of low weight per piece comprises a separator formed by a cellular rotor with a filter wall adapted to separate the particulate material as the carrying air flows to the suction side of a blower. The pressure side of said blower is in communication with a conveyor duct communicating with the separator and having a threshold forcing part of the air upwards into the rotor so as to pass the filter wall in the opposite direction, thereby blowing the filter clean before the air contributes to the further conveyance of material through the duct.

Abstract: Compounds of the formula Ia and Ib ##STR1## are prodrugs of allopurinol and have i.a. a much higher solubility in water and/or a higher lipophilicity than allopurinol, which makes such compounds useful for oral, parenteral and rectal administration to a warm-blooded animal such as a human. Such compounds will after administration be converted into allopurinol.

Abstract: A method of printing a pattern on a surface receptive to sublimation dye, in which (a) the back of a carrier foil (1) provided with sublimation dye is caused to adhesively contact an auxiliary carrier (4) by means of an adhesive (5) of greater adhesiveness to the auxiliary carrier (4) than to the carrier foil (1), (b) the pattern to be transferred is cut or punched in mirror-reversed form in the carrier foil (1) without cutting through the auxiliary carrier (4), (c) excess carrier foil (11) is released from the auxiliary carrier (4), and (d) the auxiliary carrier (4) with the applied positive or negative cut or punched pattern (10) is caused to adhesively contact the surface, is pressed and heated. The sublimation foil (9) consists of a carrier foil (1) of paper or plastics whose front is provided with a layer of sublimation dye and whose back is provided with an auxiliary carrier (4) by means of an adhesive (5) of greater adhesiveness to the auxiliary carrier ( 4).

Abstract: A thin plate structure such as a deck structure for, for instance, a footbridge comprises at least two abutting and substantially horizontally arranged profiled girders. Each girder comprises at least two substantially vertical plate-shaped side members. The girders are interconnected two by two by means of a plurality of connection fittings in these side members. These connection fittings are formed by locking lifting and comprising at least one downwardly pointing locking tongue cut out in one of the side members of each girder. Along a preferably horizontally extending bent bending area the locking tongue is bent in an offset manner outwards. The locking tongue co-operates with a locking tongue opening punched out opposite the locking tongue in the abutting side member of the adjacent girder as well as with at least one upwardly pointing locking gill punched out of one of the side members in each girder.

Abstract: An adjustable height stand for a visual display unit incorporates a column adjustably mounted within a base part, with a gear train for effecting vertical adjustment. The gear train incorporates a helical gear arranged with its axis in parallel with the column, and cooperates with a gear part mounted to the column. The helical gear may be rotated by a hand wheel through a gear train incorporating a pair of meshing bevel gears. Alternatively, the helical gear may be driven by a motor. The stand is rotatable relative to the work surface about a vertical axis, and the visual display unit is tiltable relative to the support. The spring is provided for compensating for the weight of the visual display unit.

Abstract: The invention relates to a valve assembly for a refrigeration system of the modulating kind used for controlling the flow of refrigerant through the evaporator. The difference between the inlet and outlet temperatures of the evaporator is utilized to control the superheat but the evaporator inlet temperature taken alone is utilized to set different ranges for the valve actuator temperature to accomodate different operating conditions.

Abstract: A reproduction camera comprises a copyboard (5) with picture (9) which is to be photographed, above which is disposed an objective with a diaphragm (4), possible filters (3), a shutter (1) and a focal plane (11) in which the film is placed.The camera is controlled by an electronic image scanning element (6) which, fully automatically and point by point, scans the copyboard and measures the total light intensity, finds the picture's lightest and darkest points, the picture's position and its dimensions.A further measuring element (2) measures the light intensity immediately in front of the focal plane.One can hereby provide a reproduction camera's digital calculation module with all the information necessary for the setting and the control of the exposure, completely without any mechanical movements or manual effort.