Abstract: A a quick acting closure has two flanges. One of the two flanges has a groove for a flexible seal and the other has spaced cogs. The goal is to provide a quick acting closure in such a form that it can be used for the connection/closure of boiler or pipeline elements which can either have a round or a non-round cross section. In accordance with the invention, the two flanges are therefore connected to each other by individual clamps which are arranged at the circumference of the flanges and the number of which is equal to the number and the spacing of the cogs in the flange whereby the clamps are connected to each other two sheet rings, i.e. one lower and one upper sheet ring.

Abstract: On a cylinder lock (1) tumblers (10) are disposed which extend parallel to the broad side (8, 9) of the lock channel (6). The ends of these tumblers (10) block between the rotor (3) and the stator (4). On the rear side (17), facing away from the key channel (6), of the tumblers (10) are disposed additional codings. These codings cooperate with additional two-part blocking elements (20). These blocking elements (20) are displaceable at right angles to the lock axis and block in addition in the region of the shear line (32) between rotor (3) and stator (4). Therewith additional blocking combinations are possible and the security of the lock against unauthorized opening is increased.