(19)
(11) EP 1 656 504 A1

(12)

(43) Date of publication:
17.05.2006 Bulletin 2006/20

(21) Application number: 04767951.9

(22) Date of filing: 02.08.2004
(51) International Patent Classification (IPC): 
F04C 23/00(1968.09)
F04C 18/12(1980.01)
F04C 29/00(1968.09)
(86) International application number:
PCT/GB2004/003316
(87) International publication number:
WO 2005/019652 (03.03.2005 Gazette 2005/09)
(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 PL PT RO SE SI SK TR

(30) Priority: 18.08.2003 GB 0319344

(71) Applicant: The BOC Group plc
Windlesham Surrey GU20 6HJ (GB)

(72) Inventor:
  • HUNTLEY, Graeme
    Bridgwater, Somerset TA6 7PH (GB)

(74) Representative: Booth, Andrew Steven 
The BOC Group plc, Chertsey Road
Windlesham, Surrey GU20 6HJ
Windlesham, Surrey GU20 6HJ (GB)

   


(54) REDUCING EXHAUST PULSATION IN DRY PUMPS