A device for examining the field of vision has scanning means with beam deflecting and beam reproducing elements (5-10) which transmit to a detector (12) a light beam projected by a lighting source (1', 1'') on the area of the eyeground to be reproduced , as well as the light reflected by the eyeground, if necessary. An evaluating and timing unit generates point by point an image of the scanned ar...

An anesthesia rebreathing system including a single use structural portion and a reusable structural portion configured so as to be readily latched together to automatically couple respective fresh gas interface ports and patient overflow ports. The single use portion includes a patient bag which is mounted in a closed rigid container in the reusable portion. Gas pressure in the container is contr...

PCT No. PCT/EP89/01199 Sec. 371 Date Jun. 13, 1990 Sec. 102(e) Date Jun. 13, 1990 PCT Filed Oct. 11, 1989 PCT Pub. No. WO90/03774 PCT Pub. Date Apr. 19, 1990.A nozzle assembly for discharging a mixture of first and second fluids includes a housing having inlets for introducting the first and second fluids into the housing; and a sleeve disposed in and affixed to the housing and receiving the secon...

A device for producing focused acoustic pressure waves for therapeutic purposes, in particular for destroying concrements, calculi etc., includes a sound generating unit (1') generating pressure waves in a coupling medium (8); said waves are focused by a reflector (3). Said device can also include a locating device (11) for the concrements, calculi etc. to be destroyed. Said device is characterize...

A frame (10) has an integral outer margin (24) and a back plate (26). A display item (28) such as a picture, photograph, certificate, document, or the like is front-loaded into the frame (10) by insertion of the corners of the display item (28) into slots (50). The display item (28) is thus held against the back plate (26) and bounded by the outer margin (24). A flexible transparent sheet (30) fit...

An ultrasonic cutting tip assembly for an ultrasonic surgical cutting instrument having an ultrasonic transducer. The assembly includes a transition horn which is operatively couplable to the transducer, an elongated ultrasonic vibration-transmitting tube which is separable from the horn, and a threaded retaining nut. The threaded portion of the nut threadably engages the threaded portion of the t...

Lithotripsy device with a therapeutic sound transmitter (1) and a locating unit (3, 8) for calculi, concrements etc., as well as a couch (7) for the patient. Said device is characterised in that the therapeutic sound transmitter and the locating unit are arranged at a distance (s) from each other, and in that the couch for the patient can be moved in a given manner between a locating position and ...

In a process of curtain coating, the use of very high coating speeds is facilitated by application to the surface of the object to be coated of a predetermined high level of electrostatic polar charge. The level of charge which is effective to promote the desired uniformity of coating with minimum formation of coating defects is directly related to the coating speed, so that increasingly higher le...

A device for generating acoustic oscillations in a liquid medium comprises a casing provided with inlet and outlet tubes (3, 4) for the liquid medium and containing, mounted inside it, a rotor (6) embracing a stator (5). The rotor (6) and the stator (5) consist of cylindrical bushings with through channels (9, 8) in their walls, the number of the channels (8) evenly spaced in the wall of the cylin...

A fluid distribution bar, such as for applying a liquid or other fluent medium to a tumbling bed of material to be coated, has concentrically mounted inner and outer tubes in the described embodiment. The inner tube has a plurality of outlets along a length of the tube which are alignable with corresponding openings formed in the outer tube by relative movement of the tubes. A plurality of slidabl...

PCT No. PCT/SE89/00522 Sec. 371 Date May 14, 1990 Sec. 102(e) Date May 14, 1990 PCT Filed Sep. 27, 1989 PCT Pub. No. WO90/04460 PCT Pub. Date May 3, 1990.The invention relates to a centrifugal separator with a rotor having a separation chamber, a stack of frusto-conical separation discs arranged spaced from each other in the separation chamber coaxially with the rotor, and means defining centrally...

PCT No. PCT/SE88/00541 Sec. 371 Date May 14, 1990 Sec. 102(e) Date May 14, 1990 PCT Filed Oct. 3, 1989 PCT Pub. No. WO90/04461 PCT Pub. Date May 3, 1990.In a centrifuge rotor a central inlet chamber (14) communicates with a surrounding separation chamber (5) through the spaces between the radially inner edge portions of at least partly conical separation discs (6) which are arranged in a stack in ...

A method for the direct casting of metallic material, such as steel, to produce elongated bodies (2) which form primarily blanks having a cross-section which corresponds relatively closely to the cross-section of the intended products, in which method a metal melt (1') is caused to run from an outlet gate (3) in a molten-metal container (1) and is collected subsequent to solidification. The method...

A method for optoelectronic control of oxygen cutting provides for capturing the flame radiation of the cutter (12) before the beginning of metal cutting and evaluating the intensity of said flame (12); capturing the radiation of the metal surface (13) heated in the zone (15) where the metal cutting starts and evaluating the intensity of illumination of said surface (13); capturing the radiation o...

The machine tool comprises a spindle unit (13) mounted rotatably around a linear guide (12) secured at a right angle to the rotation axis of the spindle (14) and parallel to the base of a turntable (9), and a system of levers comprising a double-arm lever mounted on the turntable (9), one arm of which is connected to the mandrel (3) of an article, whereas the second arm co-operates with a toothed ...

PCT No. PCT/AT88/00112 Sec. 371 Date Aug. 16, 1990 Sec. 102(e) Date Aug. 16, 1990 PCT Filed Dec. 16, 1988 PCT Pub. No. WO89/05719 PCT Pub. Date Jun. 29, 1989.A process for manufacturing moldings of plastic material includes successive cycles of conveying a succession of mobile molding tool parts independently of each other along lateral and vertical guideways of a conveyor to a work station holdin...

In order to match the compound temperature to the wall temperature of the distribution channel (12) as accurately as possible in an extrusion tool for producing tubular foil, tubes or the like, it is proposed that the distribution channel (12) extend only in a radial tool plane within a wall region formed by the tool casing (10) and/or a spindle head (21) radially covering the tool casing (10).

PCT No. PCT/FR88/00613 Sec. 371 Date Jul. 12, 1990 Sec. 102(e) Date Jul. 12, 1990 PCT Filed Dec. 14, 1988 PCT Pub. No. WO89/05738 PCT Pub. Date Jun. 29, 1989.Coding of the value of any number of quantities measured in a tire, for example its pressure and its temperature, is carried out using a ratio of time intervals TP/Tr, Tt/Tr. This frees the device from the effect of the time shift of the modu...