Patent ID: 6209761
Filing Date: 2001-04-03
Classification: B05B

Abstract:
A pump for mounting on a receptacle, the pump comprising a pushbutton that is movable relative to a pump body between a high position and a low position, and that co-operates with the pump body to define a pump chamber of variable volume, the pump body having a vent suitable for communicating via a passage with the outside of the receptacle when the pushbutton is in an intermediate position between the high and low positions, thereby enabling air to enter into the receptacle while a substance is being sucked into the pump chamber, wherein the pushbutton includes an inner skirt integrally formed therewith and suitable for sliding in a sealed manner inside the pump body, the pushbutton including an outer skirt radially outer the inner skirt and the pump body, said inner skirt having a first portion and a second portion suitable for isolating the vent from the outside when the pushbutton is in the high position and when it is in the low position, the first portion being suitable for contacting the pump body both when the pushbutton is in the high position and when it is in the low position and the second portion being suitable for contacting the pump body only when the pushbutton is in the low position.