Abstract: The present invention relates to a cranial radiography apparatus, particularly intended for dental panoramic radiography, said apparatus comprising a first body part to which is connected a second body part (13) having thereto connected a third body part (14) to which is connected a fourth body part (15). To the opposite ends of said fourth body part (15) are connected an x-ray source and an x-ray detector. The body parts are connected to each other by means of pivot shafts aligned essentially parallel to each other. The pivot shafts are rotated by means of active actuators and their rotational movement is programmably controlled by means of a computer, thus permitting the x-ray source and the x-ray detector to be moved over any predetermined orbit. The apparatus further includes means for radiography using a cephalostat.

Abstract: The invention concerns a device in winding of a web. The device is composed of at least one loading and/or support unit (24) in order to support the winding core and to load the roll. The loading and/or support unit (24) comprises at least two rolls (22), around which at least one belt (25) has been fitted in the axial direction of the rolls (22). The rolls (22) in the loading and/or support unit (24) have been coupled together by means of coupling members (53, 54) so that movements of the rolls (22) in relation to one another are geometrically positively controlled.

Abstract: The invention relates to an improved micrometric device for finishing high precision bores. The device has a substantially cylindrical body having a displacement system arranged in an interior thereof. The displacement device actuates on a tool holder which is then displaced in the same direction of the radial component of the workforce. The micrometric device is also provided with a backlash suppression system. In accordance with the present invention, the micrometric device has an upper cylindrical body mounted and fixed to a lower cylindrical body, both of which coaxially envelop a graduated drum. The graduated drum, in turn, is coaxially mounted and connected to a micrometric screw arranged longitudinally in the interior of the micrometric device. In the interior of the micrometric device, and connected to an upper extension of the micrometric screw, a conversion mechanism is arranged which changes a rotating movement of the micrometric screw into a linear movement of a movable crossbeam.

Abstract: False-ceiling construction (10), which is intended in particular for institutional kitchens and which false-ceiling construction is composed of modular units, which comprise at leat an intake air unit (11) and an exhaust air unit (18) and, in the area between them, a false-ceiling plate (25), and which false-ceiling construction is formed underneath the ceiling construction (C) proper in a room. The false-ceiling construction (10) includes at least one flow opening (15), passing from the intake air chamber (13) in the intake air unit (11), for a trap-air jet (L.sub.1a) for making the trap-air jet (L.sub.1a) to flow as parallel to the plane (T) of the false-ceiling plate (25) or as slightly inclined in relation to said plane towards the exhaust air opening (20), placed on the exhaust air chamber (19), for the exhaust air flow (L.sub.2). The invention further concerns a method for the flow of air in connection with the false-ceiling construction.

Abstract: The present invention comprises a metal electrode (2) electrically insulated on the active surface thereof and which is connected to a high frequency circuit (4) and transmits current capacitatively. This apparatus is characterized in that an axial reciprocating movement of adjustable rate is applied to the electrode (2) and the intensity of the percussion on the patient's affected area is also adjustable. The electrode is removeably attached to a stem (7) resiliently engaging (21) the periphery of a cam (11) driven by a geared motor (13, 14) housed in a grip (16) of the mechanical device (1). This comprises a nozzle (17) through which the electrode (2) projects and which is provided with a replaceable front portion (18) for coupling portions of different length. The mechanical device (1) is connected to a box (3) containing the electronic circuit and the percussion rate control device for the electrode holder stem (7).

Abstract: The improvements relate to the connections between the trigger lever (21) and the body (1) of the sprayer device, and to the rod (18) of the pumping piston (17). The rod (18) is coupled to the trigger lever (21), which is snap-inserted, as a fork arrangement, into the body (1) of the sprayer device.

Abstract: The invention relates to an arrangement of nozzles with negative pressure intended for the treatment of webs. A nozzle directs a drying and supporting gas flow at the web and which has a box construction, and a nozzle space formed at one side of the nozzle. The nozzle space is provided with a nozzle slot defined by nozzle walls. One of the walls operates as a curved guide face which is fitted to turn the gas flow passed out of the nozzle slot, based on the Coanda effect, so as to make it parallel to the carrier face formed on the top face of the nozzle. At least one second nozzle slot is provided at a distance before said first nozzle slot, in the running direction of the web. A flow guiding fitted in connection with the second nozzle slot is arranged so that the flow has a substantially large velocity component perpendicular to the direction of running of the web. The velocity component parallel to the plane of running of the web of the flow passed out of the second nozzle slot is larger than zero.

Abstract: The invention relates to a catalyst to be utilized in the metathesis reactions of olefines, the catalyst comprising an after-treated tungsten complex containing diol ligands and hydrocarbon ligands, which are benzenes substituted with a lower alkyl group. The invention also relates to a method for preparing a heterogenous catalyst to be used in the metathesis reaction of olefines as well as to a metathesis process for the conversion of olefines.

Abstract: The present invention relates to a tractor for transferring a variety of trailers and transfer devices (12) equipped with a kingpin (13), which tractor is equipped with a vertically adjustable 5th wheel (4). The 5th wheel (4) comprises gripping members (14, 15) and power mechanisms (16) by means of which the transfer device (12) is by the kingpin (13) with a convenient force pulled into contact with the 5th wheel 4 thus making an inner force balance of the joint 4-12 possible.

Abstract: A method of liquefying natural gas, wherein the gas (1) is cooled and separated into a liquid phase (6) and a gaseous phase (8) which is expanded (9) and added to the liquid phase in the column (7), at the head of which the gas enriched with methane (21) is separated and recompressed (27) and carried to the liquefaction (32, 33, 34) whereas the liquid phase from the bottom of column (7) is expanded and rectified in column (14); the head effluent (19) being condensed (20) and conveyed as a reflux (25) to column (7); the pressure in column (7) being higher than that of column (14); the C.sub.3 + hydrocarbons from the bottom (16) being separated and the methane liquefaction (33, 34) being conventional.

Abstract: A method and device for determining the state of a movement or stoppage of a yarn fed to a textile machine in which a variation in the shape and/or position of the yarn relative to an optical sensor in front of which the yarn runs during its feed to the textile machine is determined. On the basis of this variation, an output electrical signal is generated and is used for operating an operating member of the textile machine such as an indicator for indicating the state of movement of the yarn, a machine control circuit or a similar operating member. The method is implemented by an optical sensor which generates at least one output which is a variable electrical signal on the basis of a variation in the shape and/or position of the yarn relative to the sensor. The signal is compared with a reference signal in order to operate a switch device which causes the output electrical signal to be generated.

Abstract: The spray-dispenser device (10) dispenses a dose of liquid medicament contained in a cylindrical vial (18) by the action of a piston (26). The device comprises an operating rod (44) for the piston (26) and a channel (37, 50, 52) for connecting the interior of the vial (18) to a spray nozzle (54). The vial (18) is to be thrown away after dispensing. The vial (18) already contains the piston (26), which seals the vial. The piston (26) is automatically connected to the rod (44) on inserting the vial (18) into the body (11). In the piston there is provided a valve which interrupts the emission channel (37, 50, 52). The valve opens as a result of the operation of the piston (26).

Abstract: The invention relates to a method for separating plastic particles (P) from a suspension (L), e.g. from a cellulose mass or cellulose pulp suspension, in which the fiber-floc material is broken for loosening the plastic particles (P). In the method, turbulent flows are caused to said suspension (L), by means of which flows the particles (P) to be separated are separated from the remaining mass as the fiber network is decomposing, whereby lighter particles (P) are separated. In the method, the suspension (L) obtained in the previous phase is subjected to such a treatment that a concentration difference is achieved, which prevents the fiber network from reforming and thereby the plastic particles (P) from binding thereto, and a flow (F) is directed to the separation point, where the plastic particles (P) are separated from the suspension (L).

Abstract: A method of isolating cystine rich acid-stable, biologically active proteins comprising the steps of co-precipitation by acidification of said proteins together with at least one acid-sensitive protein; isolation of said proteins from the co-precipitate by its resuspension in aqueous solution and the subsequent recovery of the proteins from the supernatant.

Abstract: The invention concerns a method for coating of a moving base, such as the face of a back-up roll, paper or board web, or equivalent, with a coating agent. In the method, a blade coater is employed in which a coating blade included in the blade coater and installed in a blade holder is loaded in the area between the blade holder and the tip of the coating blade toward the moving base by means of a loading member. The coating blade forms a substantially small angle in relation to the moving base. The coating quantity applied onto the moving base is regulated by adjusting the blade angle and/or the loading of the coating blade. The coating blade is loaded towards the moving base, in the area between said loading member and the tip of the coating blade.

Abstract: A stabilized solid controlled release dosage form having a coating derived from an aqueous dispersion of an acrylic polymer is obtained by overcoating a substrate including a therapeutically active with an aqueous dispersion of the plasticized acrylic polymer and then curing the coated substrate at a temperature above the glass transition temperature of the plasticized acrylic polymer, until the coated dosage form attains a stabilized dissolution profile substantially unaffected by exposure to storage conditions of elevated temperature and/or elevated relative humidity.

Abstract: A device for subdividing semiconductor bars into wafers comprises a grinding tool having two concentrically arranged grinding discs. A rough grinding disc is arranged inside of an outer smooth polishing grinding disc. The grinding tool grinds a lower face of a semiconductor bar to a smooth planar form. A first electrolytic truer operates in conjunction with the outer smooth polishing grinding disc while a second electrolytic truer operates in conjunction with the inner rough grinding disc. The truers are arranged to define an axial offset between the grinding surfaces of the grinding discs so that a lower face of the bar is smoothed. The device also has a slicing tool for slicing the bar into wafers which will have a smooth planar form.

Abstract: Novel substituted isoquinoline compounds are disclosed together with novel 2-phenylethylamides useful as precursors or intermediates for the production of the isoquinolines. The substituted isoquinolines exhibit activity in antagonizing the effects of platelet activating factor (PAF).