The invention relates to a trigger pump dispenser comprising - a main body, comprising - a pump chamber - an inlet port in communication with said pump chamber - an outlet port in communication with said pump chamber - an inlet valve seated between the pump chamber and the inlet port - a outlet valve seated between the pump chamber and the outlet port - a piston, seated in the pump chamber, for defining a variable volume in said pump chamber and movable between a retracted position of larger chamber volume and an inserted position of lesser chamber volume, - wherein the pump chamber has a conical shape.
Improvements in or relating to trigger pump dispensers
2023-05-17
Patent
Electronic Resource
English