Global Patent Index - EP 1017926 A1

EP 1017926 A1 2000-07-12 - INJECTION DEVICE AND INJECTION METHOD

Title (en)

INJECTION DEVICE AND INJECTION METHOD

Title (de)

EINSPRITZVORRICHTUNG UND -VERFAHREN

Title (fr)

DISPOSITIF ET PROCEDE D'INJECTION

Publication

EP 1017926 A1 (EN)

Application

EP 98917878 A

Priority

  • SE 9800664 W
  • SE 9701325 A

Abstract (en)

[origin: WO9845576A1] Cracks round a bore hole (19) are sealed while at the same time a rock bolt (20) is anchored in the bore hole by injecting a sealing material (23) through an injection nozzle. This comprises a sealing sleeve (10-14) with a through hole and a nonreturn valve device and is left in the bore hole after injection. The rock bolt (20) is inserted through the through hole of the valve nozzle and through the nonreturn valve device (16, 20). According to the invention, one sealing element of the non return valve device is formed of the rock bolt (20) and its other sealing element is formed of a sealing socket (16). This is pressed in a yielding and sealing manner against the rock bolt. The injection of the sealing material (23) is carried out through a gap (21) between the rock bolt and the sealing sleeve (10-14) and through the non return valve device (16, 20) during elastic deformation of the sealing socket (16).

IPC 1-7 (main, further and additional classification)

E21D 20/00; E21D 21/00

IPC 8 full level (invention and additional information)

E21D 20/00 (2006.01); E21D 9/00 (2006.01); E21D 20/02 (2006.01); E21D 21/00 (2006.01)

CPC (invention and additional information)

E21D 20/02 (2013.01); E21D 9/001 (2013.01); E21D 21/008 (2013.01)

Citation (search report)

See references of WO 9845576A1

Designated contracting state (EPC)

AT CH DE DK FI FR GB IE IT LI NL PT SE

EPO simple patent family

WO 9845576 A1 19981015; AU 7092698 A 19981030; AU 722633 B2 20000810; CA 2286025 A1 19981015; CN 1258335 A 20000628; EA 199900919 A1 20000424; EP 1017926 A1 20000712; JP 2001518998 A 20011016; NO 994885 A 19991117; NO 994885 D0 19991007; PL 336121 A1 20000605; SE 509139 C2 19981207; SE 9701325 D0 19970410; SE 9701325 L 19981011

INPADOC legal status


2002-05-15 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011101

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991012

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT CH DE DK FI FR GB IE IT LI NL PT SE