Patent ID: 6332561
Filing Date: 2001-12-25
Classification: B05B

Abstract:
A dispenser device without any air intake for dispensing a fluid substance, said device comprising a dispensing chamber (14) of variable volume, which chamber is provided with an inlet (12) equipped with an inlet valve member (51, 53), and is provided with an outlet equipped with an outlet valve member, said dispenser further comprising a piston (3) for causing the volume of the dispensing chamber (14) to vary, closure means (51; 52; 55; 63) being provided to close off the dispensing chamber (14) in airtight manner, substantially at its inlet (12) prior to it being used for the first time, said device being characterized in that the closure means are formed by the inlet valve member (51, 53), wherein the piston (3) is mounted on an actuator rod (2) having an end (23, 24) that projects into the dispensing chamber, said end forming a pusher member (23) suitable, at the end of its stroke, for pushing the inlet valve member (51; 53) from its airtight position into its normal working position.