Straddling dowel for positive anchoring in a borehole

Details Straddling dowel for positive anchoring in a borehole Straddling dowel for positive anchoring in a borehole

F - Mech Eng,Light,Heat,Weapons

16

B

85/23

F16B 13/06 (2006.01) B25B 31/00 (2006.01) F16B 13/12 (2006.01)

Patent

CA 1302130

ABSTRACT A straddling dowel for anchoring in a bore having an undercut, comprises an expanding shell having an axial bore which tapers gradually towards the front for guiding a spreader for expanding lamellae which define longitudinal slots in the front section of the expanding shell. The expanding shell has an undercut shoulder at the front end and the shell is tapered towards the front in the direction of the undercut shoulder. A guide tube for a setting bolt for driving forward the spreader is used for connection to the rearward end of the expanding shell. The guide tube has an outer stop and the setting bolt has an outer stop which engage one another when the spreader is driven forward to fully expand the expanding shell.

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