Abstract: The device has a lance. The lance is moved towards said molten bath level. An antenna is provided at a downward end of the lance for coaction with the slag interface (interfaces), when the lance is moved towards the slag interface (interfaces). A sensitive detection circuit is connected to said antenna. The antenna is during its downward movement capacitively coupled to said slag layer, and the detection circuit detects a predetermined impedance change (predetermined impedance changes) at the antenna provided as it is moved towards the interface (interfaces).

Abstract: A regenerable filter for use with exhaust gas streams containing combustible particles, the filter including a filter medium upon which the particles build up as the filter medium removes the particles from the gas stream, a scraper to remove the particles, except for a precoat, from the filter medium, and a burner to burn the removed particles outside the main exhaust gas exit.

Abstract: A pneumatic cushion having preinflated sealed cells with pressure compensators for distributing air between cells in response to loads placed thereon, the pneumatic cushion having a mid sheet with top and bottom surfaces, a top layer of preinflated sealed cells attached to the top surface of the mid sheet, a bottom layer of preinflated sealed cells attached to the bottom surface of the mid sheet, and pressure compensators affixed to the mid sheet and in communication with each top and bottom cell whereby upon uneven loading of the sealed cells air is stepwise transferred by the pressure compensators from a cell of high pressure on a first layer to a cell on a second layer and then to another cell on the first and so on to smooth out the uneven pressure.

Abstract: An air supported tunnel system for protecting soil rows of planted items by providing a cover thereover, the tunnel system includes a tunnel cover adapted to extend cover a longitudinally extending soil row, the covering being of plastic material and defining a tunnel of generally semi-circular cross section; a plurality of longitudinally spaced air ribs integral with the cover and extending from end to end of the cross section of the cover acts as tunnel supports when inflated; an air channel is connected to the tunnel cover along one side thereof, said air channel being in fluid commumincation with each air rib whereby pressurized air may be supplied through said air channel to inflate the air ribs to maintain the tunnel system in erected condition; a water ballast assembly connected to each longitudinal side of the tunnel cover, the water ballast assembly including a water channel connected to the longitudinal side of the cover, a plurality of ballast chambers in fluid communications with each water channe

Abstract: A hydrofoil blade for use in a paper making machine wherein a plurality of variously angulated surfaces is provided for producing turbulence having controllable scale and intensity while independently controlling the rate of dewatering.

Abstract: A follower plate assembly for dispensing hot melt material from a drum-like container including a bottom plate which is heated, a top plate spaced from the bottom plate, and a cylindrical member positioned between the top and bottom plates. The cylindrical member includes seals which engage the inside wall of the container from which material is to be dispensed. A plurality of metallic slip rings serve to seal the interface between the bottom plate and the cylindrical member.

Abstract: The invention relates to an artificial hand or prosthesis with a carcase, a palm and a finger pair, a thumb and a link (20). Distinguishing for the invention is that the movement pattern of the thumb in relation to the movement of the finger pair, the pattern being provided by the palm on which the thumb is rigidly attached being pivotably connected to the carcase about a wrist turning point (B) and by the finger pair being connected to the palm via the finger joint turning point (A). A link mechanism comprising four joints (inter alia 29, A, B) controls the gripping movements of the prosthesis, and is driven by an electric motor located in the palm in the preferred embodiment.

Abstract: Apparatus for dispensing materials from a container using a follower plate having at least one improved discontinuous resilient wiper and associated retaining groove.

Abstract: The invention concerns a display device for displaying graphical information, in the form of point patterns forming symbols of an arbitrary size and shape, each symbol being allocated a unique symbol code, as well as in the form of non-symbolic information, on a display unit (8) of a raster-scan type and comprising a symbol memory (13) including information on the point pattern of the available symbols, a pixel oriented image memory (2) including all graphical information to be displayed on the display unit, and a processor (1), by which the symbols incorporated in the image are read into the image memory by processing the information that is stored in the symbol memory. What is characteristic of the invention is a pixel oriented auxiliary memory (3) with the same pixel division as the image memory, each symbol in the image memory (2) corresponding to a pixel in the auxiliary memory, which pixel defines the symbol position in the image.

Abstract: Method for clearing a road culvert or the like which is choked with ice, wherein a substantially homogeneous rope of a material having at least a certain reversible extensibility is extended through the culvert from its inlet side to its outlet side and wherein the rope in its unloaded condition is clamped in connection with the outlet side and the inlet side respectively of the culvert so that the rope extends through the culvert.

Abstract: The invention relates to a hook assembly of the type comprising a lifting eye bolt (2) and a hook (4) mounted in either end of a body (3), and a combined latch-ejector unit (31) rotatable between a first position for locking the opening of the hook (4) and a second position for uncovering the opening of the hook and releasing a load suspended therein, and with operating means (24) for adjustment of the latch-ejector unit between the said positions.

Abstract: A rotatable coolant supply shank, and cutting tool incorporating such shank, provided with a coolant inlet, for alignment with a ring bore, extending inwardly from the peripheral surface of the shank for positively pulling coolant towards the shank axis when the shank is coupled to the cutting tool and rotated while coolant is being supplied to the inlet from the ring bore.

Abstract: An exhaust extraction rail assembly including a top rail with side rails connected thereto and extending downwardly therefrom with a pair of resilient sealing members extending inwardly from the bottom edges of the side rails to close off the space therebetween and thus form a central line of contact between the sealing members, an exhaust spout sealingly positioned in the central line of contact of the sealing member for longitudinal movement therealong, a carriage assembly supporting the exhaust spout and carrying wheels riding in a track channel on the bottom edge portion of each side rail member.

Abstract: The present invention concerns in brief a drill (1) for making of preferably through installation bores, through which bores flexible shafts, cables and the like can be lead in. The drill (1) comprises a bore crown (2) and a shank (3). The bore crown (2) has main cutting edges (6, 7) for forward drilling, side cutting edges (8) for radial drilling, and end cutting edges (9) for rearward drilling. The shank (3) preferably has a significantly smaller thickness than the area being drilled by the main cutting edges (6, 7).

Abstract: A target projector for projecting a disc-like target adapted for operation by electric power, the projector includes a base with a drive shaft rotatably mounted thereon, an electric motor is operatively connected to the drive shaft to rotate same, a throwing arm has an inner end and an outer end portion and is connected to the drive shaft for rotation therewith, a target magazine is positioned adjacent and above the inner end portion of the throwing arm, said magazine being adapted to hold a stack of disc-like targets.

Abstract: A disposable hypodermic syringe having a cylindrical barrel open at both its forward and rearward ends, with the forward tooled end having a necked down portion terminating in an annular flange having an outer diameter greater than that of the necked down portion and less than that of the cylindrical barrel, a stopper positioned in the necked down portion of the cylindrical barrel to seal off the tooled end of the barrel, a resilient plastic needle hub assembly fitted on the forward end of the cylindrical barrel.

Abstract: The invention concerns an apparatus for detecting sudden changes of a feature in a region of an image that is divided into discrete picture elements, the feature being represented by complex valued signals, one for each picture element, the signal phase representing the feature class and the signal magnitude representing the certainty in the feature assertion. The apparatus includes a first unit (3) for providing the complex valued signals (10) within the region and at least a second unit for providing at least two collections of complex valued multiplication factor signals (11, 12, 13) that corresponds to the complex valued signals.

Abstract: The invention concerns an apparatus for determining the degree of variation of a feature in a region of an image that is divided into discrete picture elements, the feature being represented by complex valued signals, one for each picture element, the signal phase representing the feature class and the signal magnitude representing the certainty in the feature assertion. The apparatus includes a unit (3) for providing the complex valued signals (8) within the region and complex valued multiplication factor signals (9) corresponding to the complex valued signals. In a first summation unit (4), a first sum signal is generated by the magnitude products of the signals (8) and corresponding multiplication factor signals (9), and a second sum signal is generated by the complex valued scalar products of the signals (8) and corresponding complex conjugate of the multiplication factor signals.