(19)
(11) EP 0 970 813 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
29.08.2001 Bulletin 2001/35

(43) Date of publication A2:
12.01.2000 Bulletin 2000/02

(21) Application number: 99111924.9

(22) Date of filing: 22.06.1999
(51) International Patent Classification (IPC)7: B41J 2/175
(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: 24.06.1998 US 103803

(71) Applicant: OWENS-ILLINOIS CLOSURE INC.
Toledo Ohio 43666 (US)

(72) Inventor:
  • Hock, Mark R.
    Des Plaines, IL 60016 (US)

(74) Representative: Casalonga, Axel et al
BUREAU D.A. CASALONGA - JOSSE Morassistrasse 8
80469 München
80469 München (DE)

   


(54) Liquid containment and dispensing device


(57) A diaphragm (24) for attaching to a free edge of a perimetrical wall (18) of a pumping chamber (16) of a chassis (12) of a liquid containment and dispensing device (10), said diaphragm being preshaped to have a raised central portion (24a) surrounded by a planar edge portion (24b). The raised central portion of the diaphragm permits the diaphragm, when secured to a free edge of the perimetrical wall, to flex with respect to the pumping chamber without leading to the formation of wrinkles in the planar edge portion. The diaphragm has an innermost layer (24c) of LDPE, and the planar edge portion thereof is secured by heatstaking to the free edge of the perimetrical wall of the chassis, which is formed by molding from a plastic material. An aluminum crimp ring (26) is provided to tightly retain the planar edge portion of the diaphragm against the free edge of the perimetrical wall of the chassis.






Search report