Assembly for dispensing doses of a substance of a liquid or pasty consistency

Claim 1

An apparatus for dispensing doses of a substance having a liquid or pasty consistency, said apparatus comprising: a receptacle defining a sealed storage volume for the substance to be dispensed; said storage volume being defined by the interior of said receptacle, a piston disposed in said interior and at one end of said receptacle, and an end wall closing an end of the receptacle opposite to said piston; said piston being displaceable in said interior from said one end to said end wall of said receptacle; said end wall including an orifice permitting the passage of the substance outside of the storage volume; said one end of the receptacle having disposed thereon a flexible sealing wall made of a fluid-tight material and a cylindrical base, wherein said sealing wall and base limit the displacement of said piston in a direction opposite to said end wall; said cylindrical base including a bottom having an orifice and carrying exteriorly resilient members and a skirt having pins extending therefrom and connecting said bottom; a dispensing device comprising a fixed element for removably receiving said receptacle, said fixed element comprising a plate having an orifice and a cylindrical skirt having catches therein and connecting said plate, said fixed element including a guiding member connecting said plate opposite to said skirt; a movable part comprising an operating stem being disposed generally perpendicularly to said plate and passing through said orifice in said plate, said operating stem having at one end thereof means cooperating with said plate to limit the displacement of the stem in a direction extending away from said orifice of said receptacle and at the other end thereof pusher means guided by said guiding member for displacing said stem in translation relative to said orifice of said receptacle, wherein the one end of the stem cooperates with the piston and the piston is displaced upon displacement of the stem through the pusher means; and resilient means cooperating between the fixed element and the movable part to resiliently urge said stem in a direction extending away from said orifice in said fixed element; wherein, in the assembly of the receptacle with the dispensing device, the one end of the receptacle is received in the fixed element of the dispensing device against the bias of the exteriorly resilient members on the base and the pins on the skirt of the receptacle are received in the catches of the cylindrical skirt of the fixed element, forming a bayonnet connection therebetween, to fixedly connect the receptacle to the fixed element.

Claim 2

An apparatus for dispensing doses of a substance having a liquid or pasty consistency, said apparatus comprising: a receptacle defining a sealed storage volume for the substance to be dispensed; said storage volume being defined by the interior of said receptacle, a piston disposed in said interior and at one end of said receptacle, and an end wall closing an end of the receptacle opposite to said piston; said piston being displaceable in said interior from said one end to said end wall of said receptacle; said end wall including an orifice permitting the passage of the substance outside of the storage volume; said one end of the receptacle having disposed thereon a flexible sealing wall made of a fluid-tight material and a cylindrical base, wherein said sealing wall and base limit the displacement of said piston in a direction opposite to said end wall; said cylindrical base including a bottom having an orifice and carrying exteriorly resilient members and a skirt having pins extending therefrom and connecting said bottom; a dispensing device comprising a fixed element for removably receiving said receptacle, said fixed element comprising a plate having an orifice and a cylindrical skirt having catches therein and connecting said plate, said fixed element including a guiding member connecting said plate opposite to said skirt; a movable part comprising an operating stem being disposed generally perpendicularly to said plate and passing through said orifice in said plate, said operating stem having at one end thereof means cooperating with said plate to limit the displacement of the stem in a direction extending away from said orifice of said receptacle and at the other end thereof pusher means guided by said guiding member for displacing said stem in translation relative to said orifice of said receptacle, wherein the one end of the stem cooperates with the piston and the piston is displaced upon displacement of the stem through the pusher means; and resilient means cooperating between the fixed element and the movable part to resiliently urge said stem in a direction extending away from said orifice in said fixed element; wherein, in the assembly of the receptacle with the dispensing device, the one end of the receptacle is received in the fixed element of the dispensing device against the bias of the exteriorly resilient members on the base and the pins on the skirt of the receptacle are received in the catches of the cylindrical skirt of the fixed element, forming a bayonnet connection therebetween, to fixedly connect the receptacle to the fixed element.