Abstract: A securing clip for installation of flooring elements on a supporting element having a guiding groove for engagement with the securing clip, the securing clip having a cross section of a double-flange T type with an upper flange, a web and a lower flange, the upper flange being adapted to be engaged on its both sides with neighboring flooring elements, wherein the upper flange (2, 2?) comprises at least two parts (2a, 2b; 2a?, 2b?) located on the opposite sides of the web (3, 3?) and the lower flange (4, 4?) comprises lips (5, 5?) extending beyond each end the web (3, 3?) in the direction along the web (5, 5?), the lips (5, 5?) being adapted to be blocked in the guiding groove (6), and in that at least the upper flange (2, 2?) is made of elastic material. A system for installation of flooring elements, the system comprising at least one securing clip (1, 1?) according to the invention and at least one supporting element (7).

Abstract: A securing clip for installation of flooring elements on a supporting element having a guiding groove for engagement with the securing clip, the securing clip having a cross section of a double-flange T type with an upper flange, a web and a lower flange, the upper flange being adapted to be engaged on its both sides with neighboring flooring elements, wherein the upper flange (2, 2?) comprises at least two parts (2a, 2b; 2a?, 2b?) located on the opposite sides of the web (3, 3?) and the lower flange (4, 4?) comprises lips (5, 5?) extending beyond each end the web (3, 3?) in the direction along the web (5, 5?), the lips (5, 5?) being adapted to be blocked in the guiding groove (6), and in that at least the upper flange (2, 2?) is made of elastic material. A system for installation of flooring elements, the system comprising at least one securing clip (1, 1?) according to the invention and at least one supporting element (7).

Abstract: This invention relates to braking rudder device consisting of turning rudder blade, horizontal plates and fixed rudder post, which is characterized by dividing the rudder blade in plane of symmetry in two blades, which are turning independently by an angle up to 110.degree. around their common axis where they are connected hingewise and their trailing edge is in the form of a wedge, while each of the blades are stiffened by horizontal plates which in extreme outboard position are bearing upon the rudder post and along the trailing edges are fitted vertical flaps capable of turning by an angle up to 90.degree..