(19)
(11) EP 0 947 760 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.12.1999 Bulletin 1999/48

(43) Date of publication A2:
06.10.1999 Bulletin 1999/40

(21) Application number: 99302130.2

(22) Date of filing: 19.03.1999
(51) International Patent Classification (IPC)6: F17C 13/06, F17C 5/06
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 03.04.1998 GB 9807175

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

(72) Inventor:
  • Garrett, Michael Ernest
    Woking, Surrey GU22 7XR (GB)

(74) Representative: Gough, Peter et al
The BOC Group plc Chertsey Road
Windlesham, Surrey GU20 6HJ
Windlesham, Surrey GU20 6HJ (GB)

   


(54) Gas capsule


(57) A method of filling a capsule with helium comprises making a first crimp in a neck portion of the capsule spaced from the free end of the neck and subsequently making a second crimp at or immediately adjacent the free end of the neck to effectively form a chamber between the two crimps which inhibits the helium reaching the free end which is subsequently welded.






Search report