In an engagement lock comprising two members (1 and 2) the first member (1) consists of a rod-shaped body of the diameter (dy) whose one end (6) is designed to be inserted into a cavity (3) of the diameter (Di) in the second member (2). The cavity (3) has an annular depression (9) containing a spring ring (10) of the thickness (t) which lockingly engages an annular depression (7) of the diameter (...

A circuit for performing a method melting vitreous materials in an electric furnace wherein the electrodes are supplied with an alternating current of optimal frequency lower than 60 or 50 Hz, respectively, the corrosion of electrodes being minimized. The circuit comprises a cycloconverter which changes a three-phase current supply into a single-phase current with a simultaneous changing of the in...

A circuit for performing a method melting vitreous materials in an electric furnace wherein the electrodes are supplied with an alternating current of optimal frequency lower than 60 or 50 Hz, respectively, the corrosion of electrodes being minimized. The circuit comprises a cycloconverter which changes a three-phase current supply into a single-phase current with a simultaneous changing of the in...

A circuit for performing a method melting vitreous materials in an electric furnace wherein the electrodes are supplied with an alternating current of optimal frequency lower than 60 or 50 Hz, respectively, the corrosion of electrodes being minimized. The circuit comprises a cycloconverter which changes a three-phase current supply into a single-phase current with a simultaneous changing of the in...

In order to safely collect the reactor core 3 in the case of a reactor melt-down, wherein the reactor core escapes through the base 5 of the reactor shell 2, there is provided a chute 6 underneath the reactor shell 2. It deflects the dropping parts of the melting reactor sideways and discharges them into a deposition trough 14. The chute 6 and the trough 14 are rotated relative to each other, so t...

The real time actual and reference values of parameters pertinent to the key safety concerns of a pressurized water reactor nuclear power plant are used to generate an integrated graphic display representative of the plant safety status. This display is in the form of a polygon with the distances of the vertices from a common origin determined by the actual value of the selected parameters normali...

N-substituted polyglycidyl urazole compounds of the general formula (I) in which the radicals R represent a glycidyl radical corresponding to the following general formula (II) wherein R1 represents hydrogen or an alkyl radical containing from 1 to 4 carbon atoms, or two of the radicals R represent a glycidyl radical of general formula II while the remaining radical R is a rad...

The cable (4) is fed into the vehicle through a passage (12) in the radiator grill (13), and its inserted end is connected to a contact (5) which is normally held outside the vehicle against the passage (12) under the winding force of the winder. - The winder (1) is fixed on a support structure (6) which in turn has fixtures (7a,7b) for its releasable connection to the heating appts. and to a part...

A grab with two oscillating grip arms (2, 3) which operate via a power unit (1) whose swivel axles (9, 10) are connected to a carrier unit (13, 14) which can be projected by a dedicated steerage along the grab's one-for-one segmented frame. The unit (17) for the attachment of the grab to a lifting device, a crane or the like, is deployed on the frame. The power unit (1) operates between the carrie...

In a crane, an arm (3) (movable in a vertical plane) is fitted on a crane housing (2), and from a winch (4) a load line (7) runs over deflecting points (12,13) on the arm and the housing. The second deflecting point on the housing is movably installed by a holder (14) so that the distance between it and the housing can be varied as a function of the tractive force on the load line. This compensate...