Abstract: Described is a quarter-turn latch having a key receptacle and a cover for closing the access to the key receptacle, wherein the cover can be folded around an axis parallel to the fastening plane or door of the quarter-turn latch out of an open position into a closed position, and a contour protrudes in the interior of the covet in the region of the axis, which contour is adapted to the contour of the actuating means in such a way that it fixes the actuating means with respect to rotation in the closed position of the cover and accordingly forms a lock safeguard.

Abstract: A swivel lever can be locked in a trough in a swiveled in position and comprises a locking device which is accommodated in the swivel lever and which can be unlocked by way of an access opening in the swivel lever. The access opening can be made inaccessible by means of a cover. According to the invention, the cover can be blocked mechanically, particularly electromechanically, in its covering position.

Abstract: A swivel lever actuating mechanism including a trough. The trough has a shoulder which pierces the fastening plane formed by the thin wall in the direction toward the other side of the thin wall. The trough also supports a drive shaft at which a hand lever with a projection is arranged which is swivelable out of the trough. First locking devices proceed from the trough or hand-lever-projection and cooperate with second locking devices. Independently acting locking devices are provided for the free end of the hand lever. A mechanical drive provided with a cam is arranged in the hand-lever-projection so that the cam moves the locking devices into the open or closed position when the mechanical drive is actuated. A pin with an electric drive is arranged in the trough so that the locking devices are moved into the closed or open position when the electric drive is actuated.

Abstract: A swivel lever can be locked in a trough in a swiveled in position and comprises a locking device which is accommodated in the swivel lever and which can be unlocked by way of an access opening in the swivel lever. The access opening can be made inaccessible by means of a cover. The cover can be blocked mechanically, particularly electromechanically, in its covering position.

Abstract: Electric contact element made of a sheet metal stamped part having a fit-on region for fitting to a conductor track of a flat conductor, the fit-on region having a planar base plate and a spring arm with locking arms at a distance above the base plate, and contact tongues being provided which penetrate the insulation material of the flat conductor during fitting, advance as far as the conductor track, scrape along the conductor track and establish contact, and method for producing the electric contact element. The contact tongues and at least one locking arm are attached to the longitudinal edges of the spring arm.