Sleeved anchor bar for concrete transport and lift uses grooves on bar so initially smooth sleeve engages grooves to complete firm dependable join by now-threaded sleeve.

摘要

The end (8) of the anchor bar (3) reaching into the sleeve (1) is grooved (5) so the wall (9) of the sleeve connecting part (7) can be partly pressed into the grooves. Prior to being pressed in, the sleeve connecting part should be cylindrical and smooth and the sleeve is threaded internally right the way along. The bar (3,4) is similarly grooved (5) over its full extent and the bar consists of a sector of a grooved reinforcing rod.