Abstract: A method of producing hydroxylammonium salts by catalytic reaction of nitrogen monoxide with hydrogen in a diluted aqueous solution of mineral acid in the presence of platinum catalysts suspended on a support in multiple subsequent reaction stages. This reaction takes place in a stirred reactor wherein a gas inlet and distribution system is provided in the lower part of the stirred reactor, a disk agitator is placed immediately above, the hub with bearing surface or support mounting angled, concave and tilted agitator blades that rotate their angled or concave sides in the direction of motion, and a two-blade agitator is provided on the agitator shaft in the upper part of the stirred reactor, its individual leaves being offset like lamellas so that they constantly wet the reactor cap when rotating.

Abstract: An assembly consisting of a constant velocity universal joint having an outer joint part, an inner joint part and torque transmitting elements which, in the direction of rotation, constitute positive engaging means between the outer joint part and the inner joint part and having a shaft attachment flange. The outer joint part and the shaft attachment flange comprising threaded attaching means for the purpose of being threaded to one another. The threaded attaching means are positioned at the circumference on a diameter outside a rolling circle of the torque transmitting elements. Centering means are provided for centering the outer joint part relative to the shaft attachment flange. The outer joint part comprises an integrally formed-on base on the side of the shaft attachment flange and the entering means are provided directly on the base on a diameter inside the rolling circle of the torque transmitting elements.