Pump pushbutton, with an operating portion movable relative to a portion having a dispensing nozzle or insert and elements for its retention on the pump

An operating pushbutton for a pump or valve for dispensing fluid substances contained in containers comprising:

• two separate pushbutton portions connected together and translatable axially one relative to the other, namely a movable free end portion operable by a finger of one hand and, respectively, a main pushbutton portion provided with elements for its retention on the pump or on a rigid body fixed to the pump;
• a seat provided in said pushbutton end portion to sealedly house the free end of the stem of said pump;
• a nozzle for discharging the fluid substance to the outside of the pushbutton, said nozzle being provided within the pushbutton main portion, in which there is also provided an aperture into which at least the pump stem can extend;
• two tubular appendices projecting one towards the other, one from said end portion and the other from said main portion of the pushbutton, the axes of said appendices being parallel to the axis of said seat for the stem end;
• conduits provided in the two pushbutton portions, to connect said seat for the stem to the cavity of that tubular appendix projecting from the pushbutton end portion and, respectively, to connect said nozzle to the cavity of that tubular appendix of the pushbutton main portion;
• one of said two tubular appendices being inserted into and sealedly translatable within the cavity of the other tubular appendix to hence directly connect said nozzle to said seat for the pump stem.