Dispenser with improved supply-closing means

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 47/34 (2006.01) B01F 3/04 (2006.01) B05B 7/24 (2006.01) B05B 11/00 (2006.01) B05C 17/01 (2006.01) B65D 83/76 (2006.01)

Patent

CA 2606670

The invention relates to a dispenser, particularly suitable for a liquid container, comprising: an air pump with an air cylinder (23) and an air piston (3) axially displaceable in the air cylinder, an air space (19) defined between the air cylinder and the air piston, supply-closing means (39) for closing the air supply to the air pump, discharge-closing means for closing the air discharge from the air pump, a cover (1) connected to the air piston, an air inlet opening (12) in the cover, wherein the air inlet opening debouches directly into the air space, and an annular element (39) which extends axially on the inside of the cover and which comprises an edge part, which edge part is in contact with at least the part of the inner wall of the cover located around the air inlet opening (12) .

La présente invention concerne un distributeur, particulièrement approprié pour un contenant à liquide, comprenant : une pompe à air avec un vérin pneumatique (23) et un piston à air (3) déplaçable de façon axiale dans le vérin pneumatique, un espace à air (19) défini entre le vérin pneumatique et le piston à air, des moyens de fermeture d~alimentation (39) destinés à fermer l~air d~alimentation vers la pompe à air, des moyens de fermeture de refoulement destinés à fermer le refoulement d~air à partir de la pompe à air, un couvercle (1) relié au piston à air, une ouverture d~admission d~air (12) dans le couvercle, l~ouverture d~admission d~air débouchant directement dans l~espace à air, et un élément annulaire (39) qui s~étend de façon axiale sur l~intérieur du couvercle et qui comprend une partie de bord, laquelle partie de bord est en contact avec au moins la partie de la paroi intérieure du couvercle positionné autour de l~ouverture d~admission d~air (12).

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