Abstract: Tbe invention relates to 3H-1,2,3-triazolo[4,5-d]pyrimidine derivatives, especially substituted 3-benzyl-3H-1,2,3-triazolo[4,5-d]-pyrimidines of the general formula ##STR1## in which Ph represents a phenyl radical substituted by halogen, lower alkyl, trifluoromethyl and/or by cyano, R.sub.1 represents a free amino group or an amino group that is substituted aliphatically, cycloaliphatically, cycloaliphatically-aliphatically and/or by acyl, and R.sub.2 represents hydrogen, lower alkyl, a free amino group, or an amino group that is substituted aliphatically, cycloaliphaically, cycloaliphatically-aliphatically and/or by acyl, in free form or in form of a salt, with the proviso, that in a compound of formula I in free form, wherein R.sub.1 represents N,N-di-C.sub.1 -C.sub.6 -alkylamino in which the two N-C.sub.1 -C.sub.6 -alkyl groups may be the same or different, N-mono-C.sub.1 -C.sub.6 -alkylamino or amino, R.sub.2 is other than hydrogen and other than C.sub.1 - C.sub.

Abstract: An apparatus for the continuous cleaning of solvent containing waste air operates in two phases with two identical receiving towers each with at least one microwave generator and one common vacuum evaporator. In a cleaning phase, the waste air is conducted through a first tower, where the solvents are extracted from the waste air in a closed evaporator container by a receiving medium adsorbing substances of low polarity, and pure air is exhausted to the atmosphere. As soon as the receiving medium is saturated, the first tower is switched to a regenerating phase, in which the waste air is simultaneously conducted through the second receiving tower during its cleaning phase while a vacuum evaporation device and an associated microwave generator is switched on in the first receiving tower. At a low temperature, the solvents evaporate from the evaporator container isolated in the first tower and condense to collect as reusable solvent in a collecting container.

Abstract: 1-phenyl-lower alkyl-1H-1,2,3-triazole compounds of the formula ##STR1## in which Ph represents phenyl substituted by up to and including 3 substituents selected from lower alkyl, halogen and trifluoromethyl, alk represents lower alkylidene, and wherein eitherR.sub.1 represents hydrogen, lower alkyl, lower alkoxy, amino, N-lower alkylamino, N,N-di-lower alkylamino, N-lower alkanoylamino, carbamoyl, N-lower alkanoylcarbamoyl, N-lower alkylcarbamoyl or N,N-di-lower alkylcarbamoyl andR.sub.2 represents carbamoyl, N-lower alkanoylcarbamoyl, N-lower alkylcarbamoyl or N,N-di-lower alkylcarbamoyl orR.sub.1 represents carbamoyl, N-lower alkanoylcarbamoyl, N-lower alkylcarbamoyl or N,N-di-lower alkylcarbamoyl andR.sub.2 represents hydrogen or lower alkyl,have anti-convulsive properties and can be used as medicaments.

Abstract: The overcharge prevention device is installed in a solvent processing plant in a vacuum evaporator of a heat exchanger. It assures that the level of the cleaning solution in the vacuum evaporator cannot randomly rise when a feed valve malfunctions. A float body of an overcharge valve extending into the vacuum evaporator exerts a pressure through a double-arm lever and a valve plunger upon a ball valve and a valve seat in normal operation and holds the overcharge valve in a closed position. As the level of the cleaning solution undesirably rises, the buoyant action of the cleaning solution acts on the float body, causing the pressure on the valve seat to diminish, and the overcharge valve opens. This permits air to enter into the vacuum evaporator through the overcharge valve. The generated vacuum collapses and the suction force employed to ingest the cleaning solution disappears.

Abstract: A portable radio link system mast, particularly for use in the field, employing mast tube elements which are lifted, one after the other, by means of a lifting device installed in the head of the stand and, after a certain height is reached, are connected with always the next mast tube element. The lifting device consists of three frictionally self-locking pawls arranged on top of each other, a carrying pawl, a lowering pawl and a lifting pawl, which permit a slipless lifting, lowering and locking of the mast tube elements in connection with springs. A cardigan cam lever with a feeler stud draws attention to a wrong connection of the mast tube elements, and a mast tube element in the range of the lifting device can only be pushed out of the head of the stand after a correct contact is established with the following mast tube element.

Abstract: The present invention relates to new triazole derivatives of the formula ##STR1## wherein R.sub.1 represents hydrogen, lower alkyl, optionally esterified or etherified hydroxymethyl, formyl, optionally functionally modified carboxy, or optionally mono- or disubstituted aminomethyl, R.sub.2 represents lower alkyl, and R.sub.3 represents hydrogen or lower alkyl, whereby R.sub.2 and R.sub.3 as lower alkyl can be bound directly, or in .beta.- or .gamma.-position also by way of oxygen, sulphur or the imino radical or a lower alkylimino radical, and the rings A and B independently of each other can be unsubstituted or substituted, and to their addition salts with inorganic and organic acids, in particular the pharmaceutically acceptable acid addition salts. These new compounds possess valuable pharmacological properties. In particular they have an anticonvulsive activity and are useful for the treatment of epilepsy and of conditions of tension and of agitation.

Abstract: The present invention relates to new triazole derivatives of the formula ##STR1## wherein R.sub.1 represents hydrogen, lower alkyl, optionally esterified or etherified hydroxymethyl, formyl, optionally functionally modified carboxy, or optionally mono- or disubstituted aminomethyl,R.sub.2 represents lower alkyl, and R.sub.3 represents hydrogen or lower alkyl, whereby R.sub.2 and R.sub.3 as lower alkyl can be bound directly, or in .beta.- or .gamma.-position also by way of oxygen, sulphur or the imino radical or a lower alkylimino radical, and the rings A and B independently of each other can be unsubstituted or substituted, and to their addition salts with inorganic and organic acids, in particular the pharmaceutically acceptable acid addition salts. These new compounds possess valuable pharmacological properties. In particular they have an anti-convulsive activity and are useful for the treatment of epilepsy and of conditions of tension and of agitation.

Abstract: Compounds of the class of 6-phenyl-4H-s-triazolo[1,5-a][1,4]benzodiazepine-2-carboxamides, their 5-oxides and their pharmaceutically acceptable acid addition salts have valuable pharmacological properties and are active ingredients for therapeutic compositions. In particular, these new compounds have an anti-convulsive and anti-aggressive action and inhibit somatic reflexes. Specific embodiments are N,N-dimethyl-6-phenyl-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodiazepine-2-c arboxamide, 6-(o-fluorophenyl)-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodiazepine-2-carb oxamide, N,N-dimethyl-6-(o-fluorophenyl)-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodia zepine-2-carboxamide and N,N-dimethyl-6-(o-chlorophenyl)-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodia zepine-2-carboxamide.

Abstract: Compounds of the class of 6-phenyl-4H-s-triazolo[1,5-a][1,4]benzodiazepine-2-carboxamides, their 5-oxides and their pharmaceutically acceptable acid addition salts have valuable pharmacological properties and are active ingredients for therapeutic compositions. In particular, these new compounds have an anti-convulsive and anti-aggressive action and inhibit somatic reflexes. Specific embodiments are N,N-dimethyl-6-phenyl-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodiazepine-2-c arboxamide, 6-(o-fluorophenyl)-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodiazepine-2-carb oxamide, N,N-dimethyl-6-(o-fluorophenyl)-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodia zepine-2-carboxamide and N,N-dimethyl-6-(o-chlorophenyl)-8-chloro-4H-s-triazolo[1,5-a][1,4]benzodia zepine-2-carboxamide.

Abstract: Compounds of the class of 6-phenyl-4H-v-triazolo[1,5-a][1,4] benzodiazepines, which in the 3-position are unsubstituted or substituted, particularly by a carbamoyl group or a substituted carbamoyl group, their 5-oxides and their pharmaceutically acceptable acid addition salts have valuable pharmacological properties and are active ingredients for therapeutic compositions. In particular, these new compounds have an anticonvulsive and anti-aggressive action. Specific embodiments are N,N-dimethyl-6-phenyl-8-chloro-4H-v-triazolo [1,5-a][1,4]benzodiazepine-3-carboxamide and N,N-dimethyl-6-(o-fluorophenyl)-8-chloro-4H-v-triazolo [1,5-a][1,4]benzodiazepine-3-carboxamide.