Device for expelling a liquid or pasty substance

Details Device for expelling a liquid or pasty substance Device for expelling a liquid or pasty substance

A - Human Necessities

61

M

A61M 5/315 (2006.01)

Patent

CA 2531325

A device (1) for expelling a liquid or pasty substance, including a body (2), a portion suitable for containing said substance and provided with a substance discharge port, a push cylinder (3) provided with teeth (10) and movably mounted in a bore (23) extending through the body for varying the volume of the portion suitable for containing said substance, and a mechanism connected to the body for moving the push cylinder. The device further includes a hinged lever (4) engaging the push cylinder teeth via a hinged pawl (16) provided on the lever (4) and biased into a position in which it engages the push cylinder, and a non-return pawl (18) biased into a position in which it engages the push cylinder. Said device is characterised in that the lever (4) is joined to the body by means of a releasable interlocking assembly (14, 15).

Le dispositif (1) d'éjection d'un produit liquide ou pâteux, comprend un corps (2), une partie destinée ô contenir le produit et munie d'un orifice pour l'éjection du produit, un cylindre de poussée (3) muni de dents (10), se déplaçant dans un alésage (23) traversant le corps, et faisant varier le volume de la partie destinée ô contenir le produit et un mécanisme de déplacement du cylindre de poussée lié au corps, et comprend un levier (4) articulé agissant sur les dents du cylindre de poussée par le biais d'un cliquet articulé (16) sur le levier (4) et rappelé dans une position de contact avec le cylindre de poussée et un cliquet anti-retour (18) rappelé dans une position de contact avec le cylindre de poussée. Il est caractérisé en ce que le levier (4) est lié au corps au moyen d'un emboîtement démontable (14, 15).

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