POLYVINYL CHLORIDE BOARD FOR WINDOW SILL Russian patent published in 2025 - IPC E06B1/70 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, in particular to framing window frames, namely to window sills, and can be used in construction when equipping and finishing windows of buildings, as well as in design of door openings of balconies. PVC window sill board has upper and lower walls arranged in parallel, connected to each other by vertical and inclined partitions, forming through passages with formation of symmetrical end parts, wherein through passages of the board for the window sill have alternating trapezoidal and rectangular shapes, wherein it is made by extrusion, through passages of trapezoidal and rectangular shapes are made with alternation in the following sequence: trapezoid – rectangle, without intervals, wherein the rectangles adjoin the base of the outer inclined side of the trapezoid, the angles at the base of trapeziums are 45°, pitch between vertical axes of symmetry of adjacent rectangles is 50 mm, and on the lower outer surface of the board, a marking is made with pitch of 10 mm.

EFFECT: increased strength and rigidity of the structure to increase service life and durability; easier installation due to the possibility of sawing in any place of the board with pitch of 50 mm; wider field of application of the claimed invention.

1 cl, 3 dwg