Document Type and Number:
Japanese Patent JPS6216323
Kind Code:
B2
Abstract:
1. Expansible anchor for anchoring in boreholes that are so prepared that, in an inward direction, they flare, consisting of a stay bolt (2) that is supported at the base of the borehole and has an external thread (6) and an expander cone (3), onto the expander cone (3) of which an expansible sleeve (5) that is provided along, part of its length with longitudinal slots (4) can be driven, characterised in that the diameter of that portion of the shank (7) of the stay bolt (2) lying between the external thread (6) and the expander cone (3) is smaller than the outer diameter of the thread, and that the portion of the expansible sleeve (5) that is provided with longitudinal slots (4), the sleeve being provided with an internal bore corresponding to the outer diameter of the thread of the stay bolt (2), is pressed in against that shank portion (7).
Inventors:
ARUTSUURU FUITSUSHAA
Application Number:
JP10697082A
Publication Date:
April 11, 1987
Filing Date:
June 23, 1982
Export Citation:
Assignee:
FISCHER ARTUR
International Classes:
E21D21/00; F16B13/06; F16B13/08; F16B13/00