EP 0217995 A3 19881019 - A DEVICE THAT MAY BE APPLIED TO PERFORATING DRILLS FOR THE DRILLING OF FOUNDATION HOLES,AND THE INSERTION AND STABILIZATION OF REINFORCEMENT TUBES

Title (en)

A DEVICE THAT MAY BE APPLIED TO PERFORATING DRILLS FOR THE DRILLING OF FOUNDATION HOLES,AND THE INSERTION AND STABILIZATION OF REINFORCEMENT TUBES

Publication

EP 0217995 A3 19881019 (EN)

Application

EP 85830279 A 19851112

Priority

IT 4864685 A 19851008

Abstract (en)

[origin: EP0217995A2] A device that may be applied to perforating drills comprising an expansion headpiece (1) with a determined rotation sense and retraction by motion inversion, that will perform holes of a diameter adapted to the reinforcement tube (of steel, cement or other), a pusher (11) having the function of causing the penetration of the reinforcement tube or the hooking simultaneously to the drilling of the hole, which will therefore be reinforced in one single stage, and a reinforcement tube (21), provided with a series of tongues (22), outwardly fixed, for stabilizing the foundation relating to flexion and torsion and assure the structural connection between the different stages of said tube. Each single component element of the device may be applied to perforating drills or in connection with one or two of the other elements, according to the requests.

IPC 1-7

E21B 7/20; E21B 10/32; E21B 10/44; E21B 17/08; E02D 7/28

IPC 8 full level

E02D 7/28 (2006.01); E21B 7/20 (2006.01); E21B 10/32 (2006.01); E21B 10/44 (2006.01); E21B 17/046 (2006.01); E21B 17/08 (2006.01)

CPC (source: EP US)

E02D 7/28 (2013.01 - EP); E21B 7/201 (2013.01 - EP); E21B 10/327 (2013.01 - EP US); E21B 10/44 (2013.01 - EP); E21B 17/08 (2013.01 - EP)

Citation (search report)

[A] DE 2422489 A1 19751120 - TAKECHI KOMUSHO KK
[A] US 4494613 A 19850122 - TAMAKI HIROAKI [JP], et al
[A] AT 363044 B 19810710 - LEFFER STAHL & APP [DE]
[A] US 3077235 A 19630212 - GOVIN CHARLES T
[A] US 3779025 A 19731218 - GODLEY A, et al
[A] US 4010966 A 19770308 - VANDEN BOSCH PAUL G
[A] US 4258788 A 19810331 - PATTON FRANKLIN D, et al

Designated contracting state (EPC)

AT BE CH DE FR GB LI NL SE

DOCDB simple family (publication)

EP 0217995 A2 19870415; EP 0217995 A3 19881019; AU 6076986 A 19870409; IT 1200133 B 19890105; IT 8548646 A0 19851008

DOCDB simple family (application)

EP 85830279 A 19851112; AU 6076986 A 19860731; IT 4864685 A 19851008