Abstract: A device for a controlled electrostatic discharge in persons consists of two electrically non-conductive elements mutually spaced by at least one spring and arranged in a housing. At least one element is arranged in the housing in a way to come closer parallel to a second element when force is exerted on it from the outside. Electric pins are arranged on adjacent surfaces of both elements and arranged on each surface at a mutual distance and the two surfaces are arranged at a mutual distance and simultaneously the rows of pins on one and the second element are offset, so that the pins of one row lie in the middle of the distance and both rows of pins are spaced from each other by a different distance.

Abstract: A key with indication “locked-unlocked” of a cylinder lock and comprising in its gripping section a manually movable slider for indicating “locked-unlocked” is designed in a way that in a gripping section there is arranged a recess comprising in its central section a pair of projections, wherein the slider arranged in the recess consists of two halves containing a mutually complementary middle tubular part and an external wide part extending at least partially over the contour of the recess.

Abstract: A key with indication “locked-unlocked” of a cylinder lock and comprising in its gripping section a manually movable slider for indicating “locked-unlocked” is designed in a way that in a gripping section there is arranged a recess comprising in its central section a pair of projections, wherein the slider arranged in the recess consists of two halves containing a mutually complementary middle tubular part and an external wide part extending at least partially over the contour of the recess.

Abstract: A device for a controlled electrostatic discharge in persons consists of two electrically non-conductive elements mutually spaced by at least one spring and arranged in a housing. At least one element is arranged in the housing in a way to come closer parallel to a second element when force is exerted on it from the outside. Electric pins are arranged on adjacent surfaces of both elements and arranged on each surface at a mutual distance and the two surfaces are arranged at a mutual distance and simultaneously the rows of pins on one and the second element are offset, so that the pins of one row lie in the middle of the distance and both rows of pins are spaced from each other by a different distance.