Dosaging device which can be used on different containers

A dosaging device for dosing a fluid material wherein the device can be fitted on a container, the device comprising:

• a push button including:
• an outer wall, a central tube radially inward of the outer wall, and a dose chamber for holding the material to be dosed, the chamber being between the interior of the outer wall and the exterior of the tube;
• an ejection opening from the tube through which the material is injected;
• the tube having a lower end, the tube having a radial opening from the exterior of the tube to the interior thereof in the vicinity of the lower end;
• a support for supporting the device on a container, the push button being supported on the support and being axially slidable with respect to the support by being pushed in and rising up with respect to the support;
• the support including an upper wall in the space between the interior of the outer wall and the exterior of the tube of the push button and the upper wall defining an end wall of the dose chamber, the upper wall of the support having a central opening therethrough through which the tube of the push button passes, the lower end of the tube and the radial opening in the tube being both below the upper wall of the support in all positions of the push button;
• an orifice through the upper wall of the support which would communicate between the dose chamber and the container in which the device is disposed;
• a deformable part of elastic deformable material to be arranged between the push button and the support for serving as a valve for selectively opening and closing the radial opening through the tube and the orifice through the upper wall of the support;
• the elastically deformable part including a longitudinally extendable tubular portion including a base wall, and the lower end of the push button tube normally resting on the base wall of the part;
• the tubular portion being so shaped that when the tubular portion is not extended and the push button is not depressed, the tubular portion closes over the radial opening through the wall of the tube of the push button preventing passage of material through the radial opening, but when the push button is depressed and the tube presses on the base wall of the deformable portion, the deformable portion is deformed which shifts the tubular portion of the deformable part sufficiently to open the radial opening through the tube;
• the tubular portion of the deformable part having an upper portion and a collar around the upper portion, the collar being shaped and positioned so that with the push button depressed and the tubular portion of the deformable part stretched, the collar rests on the upper wall of the support and blocks the orifice therethrough, and with the button undepressed and the tubular portion not stretched, the collar being deformable to open the orifice between the dose chamber and the container while the tubular portion closes the radial opening through the tube.