(19)
(11) EP 1 597 044 A1

(12)

(43) Date of publication:
23.11.2005 Bulletin 2005/47

(21) Application number: 03700219.3

(22) Date of filing: 24.01.2003
(51) International Patent Classification (IPC)7B28C 5/42
(86) International application number:
PCT/AU2003/000075
(87) International publication number:
WO 2003/061925 (31.07.2003 Gazette 2003/31)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(71) Applicants:
  • Wattke, Martin James
    West Pennant Hills,New South Wales 2122 (AU)
  • Campbell, William Ward
    Smithfield,New South Wales 2164 (AU)

(72) Inventors:
  • Wattke, Martin James
    West Pennant Hills,New South Wales 2122 (AU)
  • Campbell, William Ward
    Smithfield,New South Wales 2164 (AU)

(74) Representative: O'Neill, Brian et al
F.R. Kelly & Co., 27 Clyde Road, Ballsbridge
Dublin 4
Dublin 4 (IE)

   


(54) METHOD AND APPARATUS FOR THE REMOVAL OF CONCRETE SCALE