Viscous material pouring dispenser

B - Operations – Transporting – 05 – C

Patent

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Details

B05C 5/00 (2006.01) A61C 5/04 (2006.01) B05C 17/005 (2006.01)

Patent

CA 2657589

A dispenser in which an operation load of a plunger is stable and the contents of the dispenser do not leak out after pressing operation is stopped. The dispenser has a syringe body (1) having a space in which the contents are placed and also having a pouring nozzle attached to the forward end of the syringe body, the plunger (2) slid, by pressing force applied to it, in the syringe body (1) to pour out the contents in the space (m) from the tip of the pouring nozzle, and an O-ring (3) placed in an annular groove (2c) formed in a forward end section of the plunger (2) and slidable on the inner wall surface of the syringe body (1). The annular groove (2c) is formed as a partitioned recess having a bottom wall flat over it. A projection or a groove (4) is formed in a side wall of the annular groove (2c), and the projection or the groove (4) guides back suction of the contents by causing, by restoring force of the O-ring (3), the plunger (2) to slide in the direction opposite to the push-in direction of the plunger (2).

La présente invention concerne un distributeur dans lequel la charge opérationnelle d'un piston est stable et le contenu ne fuit pas une fois l'opération de compression finie. Le distributeur comprend : un corps de seringue (1) possédant un espace dans lequel le contenu est placé, ainsi qu'une buse verseuse fixée à l'extrémité avant du corps de seringue, le piston (2) glissant, sous l'effet de la force de compression exercé sur lui, dans le corps de la seringue (1) afin de verser le contenu dans l'espace (m) depuis la pointe de la buse verseuse ; et un joint torique (3) installé dans une rainure annulaire (2c) formée dans une section terminale avant du piston (2) et pouvant glisser sur la surface de la paroi interne du corps de seringue (1). La rainure annulaire (2c) est formée tel un évidement divisé recouvert d'une partie inférieure de paroi plane. Une protubérance ou un rainure (4) est formée dans une paroi latérale de la rainure annulaire (2c) et la protubérance ou la rainure (4) guide la rétroaspiration du contenu, ce qui provoque, par restauration de la force du joint torique (3), le glissement du piston (2) dans la direction opposée à celle de la poussée du piston (2).

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