Abstract: The invention provides a dispenser of substance in liquid or paste form, the dispenser being of the type comprising, in particular, a cylinder (1) of substance surmounted firstly by an endpiece (2) provided with an internal evacuation duct (2a) and fitted, secondly with a substance-taking system provided with an exhaust valve, the dispenser being characterized in that the substance-taking system comprises a piston (3) received in the cylinder (1) and having an axial duct (30) passing therethrough and connected to an outlet tube (4) whose bottom end (4a) cooperates with the axial duct (30) to define an admission orifice (40) and whose top end (4b) is secured to the endpiece (2) forming a pushbutton which bears directly or indirectly on the outside face (3a) of the piston (3) to put the cylinder (1) under pressure.

Abstract: A device for packaging and dispensing a liquid or semi-liquid substance (P) in which a substance (P) in a receptacle (1), which is closed in a sealed manner firstly at a top by a cap (2) and secondly at a bottom by an internally movable punt (5), is compressed. The device includes an elastically deformable membrane (4) received in the top of the receptacle (1). The membrane (4) is formed by a substantially frustoconical axial valve (40) having a top portion provided with a central ejection orifice (41), a middle portion running into a channel section ring (42) and a bottom portion provided with a stretchable thin skirt (43) connected to a flange (44). The skirt (43) extends upwards along an internal wall of the receptacle (1). The flange (44) fixes the membrane (4) to the receptacle (1). A nozzle-forming tube (3) passes axially through the cap (2) of the receptacle (1). The tube (3) has a top end (31) projecting outside the receptacle (1) and an internal bottom end.

Abstract: This invention has as its subject a dispensing device for fluid-like products, composed of a container having a cylindrical drum, of which one end is provided with a movable base and the other end includes a neck which is capped by a distributor assembly including a pump with axial intake which is fitted onto a plunger sleeve. The lower face of the sleeve penetrates into the neck of the container during the fixing of the distributor assembly in the neck of the container, coming into position in sliding sealing engagement with a bearing surface of the neck.

Abstract: This invention has as its subject a dispensing device for fluid-like products, composed of a container having a cylindrical drum, of which one end is provided with a movable base and the other end includes a neck which is capped by a distributor assembly including a pump with axial intake which is fitted onto a plunger sleeve. The lower face of the sleeve penetrates into the neck of the container during the fixing of the distributor assembly in the neck of the container, coming into position in sliding sealing engagement with a bearing surface of the neck.

Abstract: A pump comprises an open-ended hollow body defining a pump chamber and an inlet orifice which communicates with a reservoir. The pump body has four side walls. A piston is mounted for reciprocal movement through a portion of the body and it extends through the upper end of the body. A ferrule is disposed above the body and defines an aperture through which the piston extends. A seal is disposed is disposed between the ferrule and the body, and the seal surround a portion of the piston. A spring is mounted in the body, and the spring actively biases the piston toward the top of the body. The body has a deformable zone which has at least a portion of one side wall which is a noncircular cross-section and is radially elastically deformable. The piston has a portion which blocks the inlet orifice when the piston is depressed a first predetermined distance.