EP 0228138 A3 19871028 - PROCESS FOR PLACING A CONCRETE PILE IN THE GROUND AND A SCREW DRILL AND CASING TO BE USED IN THE PROCESS
Title (en)
PROCESS FOR PLACING A CONCRETE PILE IN THE GROUND AND A SCREW DRILL AND CASING TO BE USED IN THE PROCESS
Publication
Application
Priority
BE 1011410 A 19851231
Abstract (en)
[origin: EP0228138A2] A concrete pile is placed in the ground through a casing with a screw disposed on the bottom end thereof being screwed while rotating into the ground and on reaching the desired depth being brought up, while during this movement upwards concrete mixture is placed in the casing, said mixture being conveyed into the hole formed through a passage at the bottom end of the casing which is closed during the screwing in. In order to avoid a high resistance during the screwing of the casing into the ground and to prevent earth from being pressed downwards while the casing is being pulled out of the drilled hole, the screwing of the casing into the ground takes place by a screw fin with openings between the windings, with the ground directly above the screw fin being compacted by a displacer with a closed spiral part having the same screw direction as the fin and a closed spiral part above it having the opposite screw direction. The casing is rotated in the original screw direction during the pulling up thereof.
IPC 1-7
IPC 8 full level
E02D 5/36 (2006.01); E02D 5/56 (2006.01); E02D 7/22 (2006.01); E21B 7/00 (2006.01); E21B 7/26 (2006.01); E21B 10/44 (2006.01)
CPC (source: EP)
E02D 5/36 (2013.01); E02D 5/56 (2013.01); E02D 7/22 (2013.01); E21B 7/005 (2013.01); E21B 10/44 (2013.01)
Citation (search report)
- [Y] FR 2513304 A1 19830325 - DN INZH STR INST [SU]
- [Y] US 3391544 A 19680709 - DACZKO DONALD S
- [A] FR 2437468 A1 19800425 - LABRUE JEAN MARIE
- [A] GB 981445 A 19650127 - JOHN JOSEPH DOUGHERTY
- [A] DE 576831 C 19330518 - WILHELM STRAUSS
Designated contracting state (EPC)
AT CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0228138 A2 19870708; EP 0228138 A3 19871028; EP 0228138 B1 19901017; AT E57550 T1 19901115; BE 903965 A 19860416; DE 3674993 D1 19901122; ES 2018780 B3 19910516; GR 3001034 T3 19920120
DOCDB simple family (application)
EP 86202332 A 19861218; AT 86202332 T 19861218; BE 1011410 A 19851231; DE 3674993 T 19861218; ES 86202332 T 19861218; GR 900400858 T 19901031