(19)
(11) EP 1 989 392 A1

(12)

(43) Date of publication:
12.11.2008 Bulletin 2008/46

(21) Application number: 07701479.3

(22) Date of filing: 14.02.2007
(51) International Patent Classification (IPC): 
E21B 11/02(2006.01)
(86) International application number:
PCT/AU2007/000148
(87) International publication number:
WO 2007/092993 (23.08.2007 Gazette 2007/34)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 14.02.2006 AU 2006900720

(71) Applicant: R D Sankey Engineering Limited
50 Nottingham Road, Mansfield, Nottinghamshire NG18 1BP (GB)

(72) Inventors:
  • BURKE, Ian
    Campbellfield, Victoria 3061 (AU)
  • SCHULTZ, Lindsay
    Campbellfield, Victoria 3061 (AU)
  • TAYLOR, Mark
    Shuttlewood Chesterfield S44 6QL (GB)
  • LIEVESLEY, Neil
    Shuttlewood Chesterfield S44 6QL (GB)

(74) Representative: Long, Edward Anthony et al
Hulse & Co, St. James House, 8th Floor, Vicar Lane
Sheffield S1 2EX
Sheffield S1 2EX (GB)

   


(54) A REVERSIBLE, PERCUSSIVE, RAM-BORING MACHINE