Abstract: An inside wall of an elongated syringe body is coated by supplying at least an outer surface of an applicator ring with a coating of silicon oil while displacing a rod carrying the coated ring from a rear end to a front end of the body with the ring in continuous annular engagement with the inside wall thereof so as to transfer the oil from the ring to the inside wall. Thereafter a scraper ring also carried on the rod is displaced from the front end to the rear end of the body with the scraper ring in continuous annular engagement with the inside wall so as to scrape excess silicone oil from the inside wall.

Abstract: A syringe has a syringe body having an outer end, a needle holder on the outer end, a needle fixed on the needle holder so that liquid in the body can be expressed through the needle, and a cap removably fitted to the body over the needle holder and enclosing the needle holder and needle. A flexible envelope engaged over the needle has an inner end fixed to the needle holder and an outer end adapted to be easily pierced by the needle. The envelope is compressible parallel to the needle. The envelope is generally cylindrical and formed as a cuff, for instance with annular corrugations allowing it compress axially very easily.

Abstract: A syringe has a protective sleeve with finger seats effective in both axial directions and the thumb rest of the plunger is also effective in both axial locations, so that, after injection, the fingers and thumb are spread apart to advance the protective sleeve over the needle.

Abstract: A syringe assembly has a tubular syringe body centered on and extending along an axis and formed at a rear end with a radially outwardly projecting rim. A finger brace of limitedly elastically deformable material is formed with an end plate bearing axially forward on the rear end and formed with a central hole. A tube projects axially forward from the hole of the plate into the body at the rear syringe end, and a collar extends axially forward form the plate outside the tube and is formed with a plurality of angularly spaced and radially inwardly projecting teeth engaged under the rim. The plate is also formed adjacent each of the teeth with an axially throughgoing and angularly elongated slot defining a radially elastically deflectable side portion carrying the respective tooth.

Abstract: A syringe subassembly comprised of a tubular syringe body having a front end provided with a forwardly projecting needle and fitted over the needle with a cap of a dielectric material is tested by juxtaposing an outer electrode with the cap, juxtaposing an inner electrode with the needle, applying a high electrical voltage across the electrodes, monitoring current flow between the electrodes, and rejecting the syringe subassembly if the monitored current flow exceeds a predetermined level. The cap is normally made of a plastic and has a higher dielectric constant than the gas surrounding the subassembly in the test station, normally air.

Abstract: An object, e.g. a piston or a fluid medicament, is inserted into a tubular syringe body centered on a syringe axis and having a pair of ends by an apparatus having a support movable axially forward toward and axially rearward away from the body and a tube extending along a sleeve axis generally parallel to the syringe axis, having a rear end fixed in the support and a front end fittable inside the syringe. A centering sleeve is formed centered on the sleeve axis with a generally frustoconical centering surface engageable with the rear body end surrounding the tube. This sleeve is displaceable axially on the support between a front position with the centering surface projecting axially forward past the tube front end and a rear position with the tube front end projecting axially forward past the centering surface. The support is displaced axially forward toward the body and thereby engages the centering surface coaxially with the body rear end.

Abstract: A hypodermic syringe has a tubular body extending along and centered on an axis and having an axially forwardly open front end, a piston rod axially displaceable in the body and having a plunger rod extending rearwardly from the body, and a plug fitted into the front end and forming an axially through-going passage. An elastomeric membrane is provided in the plug traversing and blocking the passage. Furthermore structure fixed to the plug includes a point in the passage spaced axially slightly forward of the membrane so that the membrane can be deformed axially forward to engage and be pierced by the point.

Abstract: A solid workpiece, e.g. a glass tube, is shaped by a focussed beam of visible light or light in an adjacent portion of the electromagnetic spectrum in a material removal, cutting or drilling operation and is heat-treated or remelted or shaped in a plastic state by heating that second beam which is less focussed or even divergent. The beams derive from a common source, a CO.sub.2 laser, and pass through a splitting deflecting system so that the beams can be directed simultaneously either parallel to one another or with an inclination to one another at the same or different regions of the workpiece which is held in a holder capable of both rotating the workpiece and translating same.

Abstract: An apparatus for handling a plurality of elongated tubular bodies each having a small-diameter neck and a large-diameter shaft has a pair of support plates formed with respective similar arrays of throughgoing openings generally complementary to the section of the shafts of the bodies and spacers supporting the plates parallel to and spaced from each other with the openings arranged pairwise with one opening of each plate aligned along a respective axis with a respective opening of the other plate so that the bodies can be held therein. A stop plate parallel to and spaced from the support plates is formed with stop openings in an array like the openings of the support plates.

Abstract: A hypodermic syringe has an elongated tubular body having a front end adapted to carry a needle, a rear end, and a bypass between the ends. A front partition piston defines with the front end a front compartment adapted to hold a substance and a rear piston defines with the front piston a rear compartment adapted to hold a fluid miscible with the front-compartment substance. The front piston is displaceable into a middle position in the bypass for fluid communication between the compartments. A stem projecting rearward out of the body from the rear piston is provided with axially spaced front and rear external screwthreads and has a clear region between the screwthreads. A damper on the rear end of the body can engage the screwthreads for slowing axial movement of the screwthreads past the rear end of the body and for permitting relatively rapid axial movement of the stem in the body when the clear region is level with the damper.

Abstract: The syringe has a needle-attachment piece which forms a connection neck for affixing the syringe needle and which is held at the cylinder nozzle of the syringe cylinder by a connection piece notched in at the cylinder nozzle. The connection piece is provided with a collar which externally surrounds the connection neck sealing it tightly and mechanically stiffening the same, so that the syringe needle can be held in a stable manner, even when the needle-attachment piece is made of a soft elastic material, in order to provide a perfect seal.

Abstract: An automatic washer for cleaning objects, particularly hands, comprises a housing substantially enclosed on all sides with at least one opening for introduction of the objects to be cleaned, at least one nozzle, preferably a plurality of nozzles, for admitting at least one cleaning medium, whereby the nozzles are aligned and oriented appropriately to clean the surfaces of the object to be cleaned positioned in the interior of the housing, a control device detecting and responding to characteristics, particularly the shape, orientation, and position, of the object inserted into the interior of the housing to be cleaned, so as to activate the cleaning process when those characteristics correspond to those preset in the control device, and an operating mechanism which monitors and controls the method and timely running of the cleaning process.