(19)
(11) EP 0 749 518 A1

(12)

(43) Date of publication:
27.12.1996 Bulletin 1996/52

(21) Application number: 95912974.0

(22) Date of filing: 24.03.1995
(51) International Patent Classification (IPC): 
E21D 21/ 00( . )
(86) International application number:
PCT/AU1995/000167
(87) International publication number:
WO 1995/026457 (05.10.1995 Gazette 1995/42)
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 25.03.1994 AU 1994PM04737
03.11.1994 ZA 19940008688

(71) Applicants:
  • DU PONT (AUSTRALIA) LTD..
    North Sydney, NSW 2060 (AU)
  • THE NEWCASTLE WALLSEND COAL COMPANY PTY. LTD.
    North Sydney, NSW 2060 (AU)

(72) Inventors:
  • SKYBEY, Ghassan
    St Johns Park, NSW 2176 (AU)
  • McCOWAN, Brian
    Ellalong, NSW 2325 (AU)

(74) Representative: Leeming, John Gerard, et al 
J.A. Kemp & Co., 14 South Square, Gray's Inn
London WC1R 5LX
London WC1R 5LX (GB)

   


(54) ROCK BOLT