Floor tile levelling device
A system for the levelling of floor tiles, comprising: a separation post incorporating: a base component, a separator component and a threaded shaft; and a threaded cap with: a hollow dome-shaped body, a lower cylindrical component, an upper hub with a central female thread for the assembly thereof on said threaded shaft, and a number of lateral openings separated by a plurality of ribs with a substantially U-shaped structural cross-section, and comprising: —a smooth external web, with no protruding wings or extensions, of increasing width in a downward direction toward a first lateral end with a curved concave profile, —a first wing and a second wing that extend toward the interior of the cap from lateral ends of the web of the ribs and forming ergonomical surfaces for exerting pressure on the cap in the direction of tightening and loosening of the cap.
1. A floor tile levelling system; comprising:
a separation post including: a base component, a separator component and a threaded shaft extending from an upper portion of said separator component; and
a threaded cap including: a hollow body provided with a lower cylindrical component and an upper hub, axially centred with respect to the lower component and centrally having a female thread for assembly of the threaded cap on the threaded shaft of the separation post and tightening of said threaded cap against an upper surface of floor tiles to be levelled; a series of lateral openings, and a plurality of ribs arranged between said lateral openings and extending from the lower cylindrical component to the upper hub, wherein the body of the threaded cap has a curved convex outer surface, which is dome-shaped, defined by the ribs;
wherein said ribs have a substantially U-shaped structural cross-section, and comprise:
a smooth external web, with no protruding wings or extensions, of increasing width in a downward direction toward a first lateral end with a curved concave profile;
a first wing that extends from said first lateral end of the web toward an interior of the threaded cap and forming inside a corresponding opening a first curved concave surface for exerting pressure on the threaded cap in the direction of rotation corresponding to the tightening of said threaded cap on the threaded shaft
a second wing that extends from a second lateral end of the web of the rib toward the interior of the threaded cap and forming inside the corresponding opening a substantially vertical surface for exerting pressure on the threaded cap in the direction of rotation corresponding to loosening of the threaded cap on the threaded shaft.
2. The system according to claim 1 , wherein the first wing and the second wing of consecutive ribs of the threaded cap are joined by a lower section and by an upper section, projected toward the interior of the hollow body, and which together with said wings form a continuous perimeter frame inside the corresponding opening.
3. The system according to claim 1 , further comprising two pairs of ribs regularly distributed on the threaded cap, and perpendicular in pairs, the ribs of each pair being arranged in planes parallel to a corresponding diametral plane (X, Y), displaced in opposite directions with respect to the corresponding diametral plane (X, Y), the first wings of the respective ribs remaining substantially aligned with said diametral plane (X, Y).
4. The system according to claim 2 , further comprising two pairs of ribs regularly distributed on the threaded cap, and perpendicular in pairs, the ribs of each pair being arranged in planes parallel to a corresponding diametral plane (X, Y), displaced in opposite directions with respect to the corresponding diametral plane (X, Y), the first wings of the respective ribs remaining substantially aligned with said diametral plane (X, Y).