Abstract: An injection device for holding and activating a two-chamber ampulla has components whose relative movement causes the pistons of the two-chamber ampulla to be moved in order to mix the substances, as well as devices for injecting the product which is mixed in this way. For this purpose, a receptacle (103) into which the two-chamber ampulla (111) can be inserted and secured is held in a housing (101), and the receptacle (103) can be displaced by means of a carriage (108). A tappet (104) which acts on the pistons (111A, 111B) is movably held in the receptacle (103). A traction cable (114) which is deflected by means of a roller (109) which is mounted on the carriage (108) and one of whose ends is connected to the receptacle (103) and the other end of which is connected to a tension spring (110) which is held on the housing (101) is provided in order to carry out a mixing stroke, insertion stroke, injection stroke and a return stroke.

Abstract: The invention relates to a novel system for gene regulation in eukaryotic cells, and methods of using the same for protein production, tissue engineering and gene therapy. In particular, the invention provides a new system for antibiotic-regulated gene expression in eukaryotic cells based on sequences from Enterobacteriaceae antibiotic resistance promoters, polypeptides that bind to the same in an antibiotic responsive manner, and nucleotides encoding such polypeptides. Further, the invention provides novel and sensitive methods of screening for candidate antibiotics.

Abstract: An injection device for a syringe, having a syringe body, a cannula with a needle, a plunger with a plunger rod, and an injection carriage for displacing the syringe body and the plunger, comprises at least one actuating element that acts on the injection carriage to carry out the injection procedure. The actuating element (120, 220, 320) cooperates with components which withdraw the needle (108, 208, 308) from the puncture site once the injection procedure has been completed, using a return stroke (H3) that is applied to the injection carriage. A single, targeted linear movement inserts the needle to a defined depth, injects the medicament and, once the injection has been completed, produces a return stroke which allows the needle to be withdrawn into the housing and thus out from the puncture site. The injection device is advantageously equipped with additional components which produce a delay (TV) between the completion of the injection stroke (H2) and the start of the return stroke (H3).

Abstract: An apparatus on a carding machine for processing textile fibres, with a cylinder, has, in the preliminary carding zone, after carding zone and/or underneath carding zone, covering elements which lie opposite the cylinder clothing. A fixed carding element is associated with at least one cover element. The spacing of the cylinder clothing from the clothing of the fixed carding element is smaller than the spacing from the cover element. In order to reduce nep formation, to allow improved carding work and to give a better carding result, between at least one clothing strip of the fixed carding element and a cover element arranged upstream and/or downstream thereof, there is arranged an air guide element the spacing of which with respect to the cylinder clothing gradually decreases or increases.

Abstract: The present invention discloses mammalian cells useful for regulated gene expression in response to compounds being gaseous or liquid at the cultivation temperature of said mammalian cell, and non-human mammals comprising such mammalian cells. The invention further discloses methods for producing proteins in mammalian cells in a regulated way in response to inducing gaseous or liquid compounds. The invention is further directed to isolated nucleic: acids useful for constructing said mammalian cells.

Abstract: A plug connector for printed circuits comprises a plug (10), which supports the contact section (42) of the printed circuit (40) on one side and a retaining element (261, 262), by means of which the plug (10) may be pre-fixed, restrained in a pre-determined axial catch position in the port. On passing the axial catch position, the contact section (42) reaches the contact position with the contact spot of the port, by means of a vertical movement component, where the contact section is locked in a final position by means of a locking element.

Abstract: A plug connector for printed circuits comprises a plug (10), which supports the contact section (42) of the printed circuit (40) on one side and a retaining element (261, 262), by means of which the plug (10) may be pre-fixed, restrained in a pre-determined axial catch position in the port. On passing the axial catch position, the contact section (42) reaches the contact position with the contact spot of the port, by means of a vertical movement component, where the contact section is locked in a final position by means of a locking element.

Abstract: The invention relates to a novel system for gene regulation in eukaryotic cells, and methods of using the same for protein production, tissue engineering and gene therapy. In particular, the invention provides a new system for antibiotic-regulated gene expression in eukaryotic cells based on sequences from Enterobacteriaceae antibiotic resistance promoters, polypeptides that bind to the same in an antibiotic responsive manner, and nucleotides encoding such polypeptides. Further, the invention provides novel and sensitive methods of screening for candidate antibiotics.

Abstract: An injection device used to accommodate a commercially available syringe in simple components whereby the use thereof enables push-in and injection to occur successively, especially in the case of manual operation. The operations can also be carried out automatically with the aid of simple additional components.

Abstract: An injection device that is used with a syringe, wherein the injection needle of the syringe is initially introduced into the skin and the injection fluid is injected afterwards. The injection device is essentially driven and controlled by a control sleeve (6) which can be displaced and/or rotated in relation to the housing (7) and which can be moved between a closing and functional position (P1) and an open and safety position (P2). In the closing and functional position, the control sleeve prevents access to the syringe and activates a release device for the injection process. In the open and safety position, a syringe (1) can be removed or inserted.

Abstract: A device for superfinishing of ground surfaces of workpieces has a finishing block, which can be displaced by means of a drive device in a plane which is orthogonal with respect to the surface to be worked and is pivotable in this plane. By means of this it is possible to create a device of relatively small structural size, by means of which any arbitrary surfaces of workpieces can be treated.

Abstract: A sliver guiding assembly for the passage of a sliver bundle discharged in a sliver advancing direction by output rolls of a drawing unit forming part of a draw frame. The assembly includes a sliver guide having a wall face converging in a direction of the advancing direction and a passage provided in the wall face. The sliver bundle is adapted to travel through the passage in the advancing direction. A sliver leading element is disposed upstream of the passage as viewed in the advancing direction for gathering the sliver bundle and for guiding it toward the passage. An arrangement is provided for maintaining communication between a zone of the sliver guide and enviromental air; the zone is defined between the outlet of the sliver leading element and the inlet of the passage.

Abstract: A device for finishing cylindrical workpieces is described, having an arrangement for rotating the workpiece, two retaining arms, each having a support and a pressure cheek received in it, wherein at least one pressure cheek is floatingly seated on the associated support, and the pressure cheeks at least partially envelop the workpiece, a grinding belt, and belt guidance means guiding the grinding belt in such a way that it at least partially envelops the workpiece and is pressed against the workpiece by the pressure cheeks, as well as an arrangement which puts the retaining arms into a back-and-forth movement parallel with the axis of rotation (A) of the workpiece. Here, either the support or the pressure cheek have a lining of a plastic material, which slightly extends in a T-shape past the lateral walls of the quick-change adapter, and which can at least slightly be compressed elastically.

Abstract: A drawing unit for drawing sliver includes first and second drawing roll pairs being spaced from one another in the direction of sliver advance. One drawing roll in each drawing roll pair is a driven roll.

Abstract: Homogeneous, electro-viscous fluids are provided which contain aluminum soaps based on products obtained by reacting one or more mono- or polycarboxylic acid(s) or the anhydrides or semi-esters thereof with reactive aluminum compounds, such as aluminum alcoholates. The aforesaid fluids manifest high electro-rheological effect and are completely homogeneous, and do not require a dispersant.

Abstract: In an expansible fixing plug having an internal bore passing right through the plug body into which an expansion bolt in the form of a nail or screw is to be driven, the internal bore is arranged helically wound around the center line and at least for a part of its length has a diameter that is the same as or slightly smaller than the outer diameter of the expansion bolt.

Abstract: An anchor bolt to be anchored by an explosive charge in a blind bore in a solid material, in particular a rock face or concrete, has a deformation chamber containing the explosive charge. To achieve inexpensive manufacture of the anchor bolt, simple mounting and high withdrawal values of the anchor bolt to be anchored, the deformation chamber open towards the leading end of the anchor bolt is closed by a stopper. A striking pin projecting beyond the leading end of the anchor bolt is inserted and guided in the stopper, so that as the rear end of the anchor bolt is hit the striking pin contacts an ignition capsule arranged between the stopper and the explosive charge.

Abstract: An anchor bolt has locking elements arranged over a part of the outer surface and formed as radially projecting lugs which are spaced circumferentially and axially from one another. Therefore a good mixing of a compound mass and reduction of the driving-in resistance is obtained. Therefore the outer diameter measured over the lugs of the anchor bolt can be matched approximately to the diameter of the drilled hole. Simple and inexpensive manufacture of the anchor bolt can be provided by powdered metal injection molding method using a system of binders with subsequent removal of the binders and sintering.

Abstract: The expansible metal anchor (1) for anchoring in a hole drilled in a component includes a shank part (2) and an expander cone (4) having a polygonal cross-section defining several faces (13) at its front end. On each face (13) of the expander cone (4) an expansible segment (5) is arranged spaced from that face by a gap (7) corresponding approximately to the distance (8) by which the expansible segments (5) project radially from the shank part (2). Each expansible segment (5) is joined to the shank part (2) at its end face directed towards the shank part (2) by web members (6, 6') constituting predetermined break points. As the expansible anchor is driven into the hole drilled in the component, the web members (6,6') break off, so that the expansible segments (5) are displaceable on the faces (13) of the expander cone.

Abstract: An expansible anchor of metal for anchoring in a hole drilled in masonry has a bolt with several connected expander cones forming a thread and an expansible sleeve provided with an internal thread matching the expanding cones. To achieve high holding fores and low draw-in force, expansible portions are formed at uniform intervals along the internal thread of the expansible sleeve by U-shaped channels. The expansible sleeve is manufactured from powdered metal in an injection molding method using a system of binders combined with subsequent removal of binders and sintering, and an injection-molding tool having a removable thread core for the internal thread of the expansible sleeve.