FASTENING ASSEMBLY FOR CONNECTION OF ELEMENTS OF WOODEN BUILDING STRUCTURES Russian patent published in 2024 - IPC E04B1/10 

FIELD: construction.

SUBSTANCE: invention relates to the field of construction, in particular to the fastening unit for connection of wooden elements. Fastening unit comprising a cylindrical rod with a turn-key facet head, which along the length consists of top part on head side and on side of free end of conical tip with screw thread of bottom part, and conical spring strung on cylindrical rod. Lower edge of screw thread is made at angle of 60° sharpening, and on the side of the rod the base of the head is made flat. Two upper turns of the conical spring are compressed to each other. Lowermost turn of the conical spring is made with a diameter smaller than the diameter of the next turn, and is placed in its space. Extreme upper and lower turns are levelled to obtain flat surfaces. On the rod, on the section of its length inside the conical spring, there are longitudinal pointed projections which are helically bent on the length of this section and have a curvature direction opposite to this thread.

EFFECT: increase of fastening capacity at shrinkage/drying of fastened wooden elements.

5 cl, 5 dwg