摘要:
A switching cabinet with a rack having a base made of length and depth struts with connected vertical frame pieces. The vertical frame pieces are inserted into a cavity formed by the ends of the length and depth struts and are welded with the base to form a corner connector. It is possible to create a switching cabinet with a simple corner connector mounted on the rack. It is also possible to achieve precise alignment of the vertical frame pieces by providing them with centering pieces which are aligned with stops of the length and depth struts.
摘要:
A rotary coupling for connecting a control device housing to a support arm or an elbow of a support arm system, having a rotating ring fixedly connected to the control device housing and partially rotatable in relation to a coupling piece which is connected to the support arm or the elbow. For equalization of tolerances caused by insufficient twist rigidity of the support arm system, the invention provides that the coupling piece forms a peripheral bearing ring which is convexly arched outwardly and is received in and supported by two shell rings. The shell rings are connected to each other and have concavely arched bearing surfaces. The shell rings are rigidly mounted on the bearing ring of the coupling piece by a clamping cheek. The rotating ring is rotatably maintained on the shell rings by a support ring which is connected to the shell rings.
摘要:
Annealing and quenching method and apparatus for the implementation of the method. An annealing and quenching method for materials or parts referred to as a charge that is finish-annealed in a vacuum annealing plant and that then proceeds into a sluice chamber fashioned a full-pipe. An intermediate deposit of the charge occurs in this sluice chamber. After the intermediate deposit, a first sluice valve that is located between the chamber for the annealing furnace and the sluice chamber is closed. A second sluice valve that is located between the sluice chamber and a quenching container is subsequently opened. Movable brackets for the intermediate deposit of the charge are retracted, so that the charge falls through the second sluice valve into a quenching medium in the quenching container. It can be additionally provided that the pressure differential between the sluice chamber that is under a vacuum before the second sluice valve is opened and the quenching container is utilized before the dropping of the charge. Due to the pressure differential, quenching medium is suctioned out of the quenching container into the sluice chamber when the second sluice valve is opened. The medium comes into contact with the charge. A two-stage quenching process is advantageously achieved. The time from finished annealing up to the cooling bath and the fall path is considerably shortened.
摘要:
A precision vacuum melting and casting furnace with a melting chamber containing a melting device. A casting chamber is positioned below the melting chamber. The casting chamber can be raised, lowered, and swung out to the side. The casting chamber communicates with the melting chamber through a valve chamber, which contains a vacuum valve. The valve chamber accommodates a lift platform for raising the mold up under the melting device. The casting chamber has a lifting mechanism, and the vacuum valve has an activating rod. In order to essentially simplify precise alignment of the different movable parts and to convert an existing conventional casting furnace into a furnace in accordance with the present invention, a hollow vertical shaft is attached to the valve chamber. The rod that activates the vacuum valve extends vacuum-tight through the shaft. A sleeve that guides the casting chamber is positioned at the outer surface of the shaft.
摘要:
The invention is directed to cephalosporins of the formula ##STR1## and the tautomers thereof, and, when E is a hydrogen atom, the pharmacologically acceptable salts thereof with inorganic or organic bases.
摘要:
Compounds of the formula ##STR1## wherein Y is hydrogen or methoxy;A is ##STR2## or, when Y is methoxy, also phenyl, 4-hydroxy-phenyl, 2-thienyl, 3-thienyl of 3,4-dihydroxy-phenyl;A' is hydrogen, --COCH.sub.2 Cl, --COCH.sub.2 Br, --COOCH.sub.2 CCL.sub.3, formyl or trityl;D is hydrogen, acetoxy, aminocarbonyloxy, pyridinium, 4-aminocarbonyl-pyridinium or -S-Het, where Het is 3-methyl-1,2,4-thiadiazol-5-yl, 1,2,4-thiadiazol-5-yl, 1,3,4-thiadiazol-5-yl, 2-methyl-1,3,4-thiadiazol-5-yl, 4H-5,6-dioxo-1,2,4-triazine-3-yl, 4-methyl-5,6-dioxo-1,2,4-triazin-3-yl, 1-vinyl-tetrazol-5-yl, 1-allyl-tetrazol-5-yl or ##STR3## n is 1, 2 or 3; R.sub.1 is hydroxyl, amino, dimethylamino, acetylamino, aminocarbonyl, aminocarbonylamino, aminosulfonyl, aminosulfonylamino, methylcarbonyl, methylsulfonylamino, cyano, hydroxysulfonylamino, methylsulfonyl, methylsulfinyl, a carboxylic acid group or a sulfonic acid group; or--(CH.sub.2).sub.n R.sub.1 is alkyl of 1 to 4 carbon atoms or 2,3-dihydroxy-propyl;R.sub.2 is unsubstituted or monosubstituted 3-pyridyl, 5-pyrimidinyl, 2-thienyl, 2-furyl-methyl, 2-thienyl-methyl, 2-imidazolyl-methyl, 2-thiazolyl-methyl, 3-pyridyl-methyl or 5-pyrimidinyl-methyl, where the substituent is chlorine, methyl, acetylamino, hydroxyl, methylsulfinyl, methylsulfonyl, aminocarbonyl or aminosulfonyl; andE is hydrogen or a carboxyl-protective group which is easily removable in vitro or in vivo;and, E is hydrogen, non-toxic, pharmacologically acceptable salts thereof formed with inorganic or organic bases; the compounds as well as their salts are useful as antibiotics.
摘要:
A cartridge case and a process for the production thereof wherein the cartridge case includes an elongated tubular member and a separate bottom part. The separate bottom part is insertable in said elongated tubular member such that at least a portion of the wall surfaces of said bottom part and said tubular member contact one another and at least one of said separate bottom part and said elongated tubular member in the region of the wall surfaces to be contacted is provided with transfer elements. The transfer element means are responsive to ultrasonic energy for joining said bottom part and said elongated tubular member together such that a cartridge case is formed especially utilizable as a shot cartridge case.
摘要:
This invention relates to an improvement in a device for the stabilization of a captive aircraft with a drive unit for rotor blades which produce lift with the aid of thrust, wherein a mooring line engages below the aircraft center of gravity, and wherein the device includes a control device intervening in the drive unit and the rotor blades for producing thrust,The improvement comprisingA position regulator and translation damper for the purpose of influencing controls for the rolling and pitching axes,An angular velocity regulator for the purpose of influencing yaw control, andA cable line traction regulator operating in dependence upon cable line traction in immediate proximity to the aircraft, and in dependence upon an output or power regulator for the drive unit, for the purpose of influencing output power regulation and the rotor blades for producing lift.
摘要:
A device for exposing an opening in a housing part of a steering gear in a vehicle steering system has a closure element that closes the opening and a component that, when it comes into contact with a liquid, changes at least one of its properties such that, after the component cooperates with the closure element, the closure element exposes the opening.
摘要:
A slide rod locking system, especially for locking the door of a switchgear cabinet, having a handle which is coupled to a control element by a control mechanism. The handle can move around a pivotal axis running perpendicular to the plane of the cabinet door. The control element can move in a parallel position relative to the plane of the cabinet door as a result of the movement of the handle. The slide rod locking system transmits powerful locking forces and at the same time can have a low-height design structure by arranging a lever on an articulated joint of the handle at a distance from the pivotal axis. The lever enables the force introduced into the handle to be transmitted to the control element and can modify its angle position with respect to the handle when moved.