SPACER ANCHOR CONTAINING ADAPTED ANNULAR GROOVE ON SPACER SLEEVE Russian patent published in 2022 - IPC F16B13/06 

FIELD: construction.

SUBSTANCE: invention relates to a spacer anchor containing an anchor bolt and a spacer sleeve, which surrounds the anchor bolt, a spacer element for the spacer sleeve, provided on the anchor bolt, while the spacer element is at least partially located in front of the spacer sleeve, and the spacer sleeve has, on its outer surface in the front area of the spacer sleeve, the first annular groove with the front end and the rear end. In at least one radial plane, an angle of inclination of the rear end of the first annular groove and an angle of inclination of the spacer element in a counteraction zone of the spacer element are different by at least 8°.

EFFECT: invention provides the reliability of attachment.

11 cl, 6 dwg