EP 0094908 A3 19860402 - ANCHOR BOLT FOR GROUND STRENGTHENING
Title (en)
ANCHOR BOLT FOR GROUND STRENGTHENING
Publication
Application
Priority
- CH 302382 A 19820514
- CH 761482 A 19821229
Abstract (en)
[origin: ES8404462A1] A tie rod assembly for a rock borehole anchor includes a tension rod 3 having a plurality of wedge shaped spreading bolts 10 at its lower end surrounded by spreading sleeve 20 segments 21, and a sleeve 40 on its upper end threaded to a tension nut 60 which bears against a ground support or anchor plate 70 upon installation and tightening. The sleeve 40 mates with the tension rod via saw tooth configured circumferential ridges or fins 45, 46 having increasing inclination angles, to thereby provide for a constant force transmission per unit of tooth length. The tension nut and anchor plate have complementarily configured spherical bearing surfaces 65, 77, and the ground engaging lower area of the anchor plate has fracturable webs 75 to accommodate surface irregularities and projections.
IPC 1-7
IPC 8 full level
E21D 21/00 (2006.01)
CPC (source: EP US)
E21D 21/0006 (2013.01 - EP US); E21D 21/008 (2013.01 - EP US); E21D 21/0086 (2013.01 - EP US); E21D 21/0093 (2013.01 - EP US)
Citation (search report)
- [A] FR 1327230 A 19630517 - ANCIENS ETABLISSEMENTS GOLDENB
- [A] US 3469407 A 19690930 - KOVACS LAJOS J
- [A] FR 1197548 A 19591201
- [A] US 3349662 A 19671031 - WILLIAMS CHESTER I
- [A] GB 2071250 A 19810916 - TITAN MFG CO PTY LTD
- [A] FR 89582 E 19670713
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0094908 A2 19831123; EP 0094908 A3 19860402; EP 0094908 B1 19881005; AU 1453183 A 19831117; AU 554035 B2 19860807; CA 1214670 A 19861202; DE 3378160 D1 19881110; DK 158106 B 19900326; DK 158106 C 19900820; DK 215583 A 19831115; DK 215583 D0 19830513; ES 522391 A0 19840501; ES 8404462 A1 19840501; NO 159678 B 19881017; NO 159678 C 19890125; NO 831500 L 19831115; US 4523880 A 19850618
DOCDB simple family (application)
EP 83810193 A 19830506; AU 1453183 A 19830513; CA 428065 A 19830513; DE 3378160 T 19830506; DK 215583 A 19830513; ES 522391 A 19830513; NO 831500 A 19830428; US 49148983 A 19830504