Plunger lock up dispenser

Details Plunger lock up dispenser Plunger lock up dispenser

B - Operations, Transporting

65

D

B65D 47/34 (2006.01) B05B 11/00 (2006.01)

Patent

CA 2205857

A pump dispenser has a plunger lock-up feature in which the plunger is positively retained against dislodgement by cradling projections on the piston stem against abutment shoulders of a locking sleeve which is fixed within the pump body of the dispenser. The pump body may be of an integral one-piece construction with the container closure, and the container vent opening is controlled by an upstanding sleeve on the piston cup for preserving the integrity of the piston seals.

L?invention concerne une pompe distributrice comprenant un moyen de verrouillage de piston qui empêche celui-ci de se déloger en repoussant des saillies menagées sur la tige du piston contre les épaulements d'une bague de verrouillage fixée à l'intérieur du corps de la pompe. Le corps de la pompe et la fermeture du contenant peuvent être construits d'une seule pièce, et l'orifice de ventilation du contenant est contrôlé par un manchon vertical sur la coupelle du piston pour préserver l'intégrité des joints du piston.

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