Yieldable connection

Details Yieldable connection Yieldable connection

E - Fixed Constructions

21

D

61/46

E21D 20/00 (2006.01) E21D 15/22 (2006.01) E21D 21/00 (2006.01) F16B 31/02 (2006.01)

Patent

CA 1197387

TITLE: "YIELDABLE CONNECTION" ABSTRACT OF THE DISCLOSURE The invention provides a yieldable connection between a metallic rod-shaped body and a holding means through which it passes and is intended particularly for yieldable rock bolts (roof bolts) anchor bolts and yieldable props, e.g. for mining and tunnelling. For that purpose shear bodies, e.g. spheres or inclined cylindrical pins are provided between the holding means and the slidable rod-shaped body and project some distance into the cross-section of the rod-shaped body. On sliding of the latter, in the holding means, these shear bodies form grooves in the rod, whereby energy is absorbed. Inventor: FRANZ POWONDRA

442251

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