A trigger pump dispenser (10) comprises an outlet valve (55) which is adapted to open an outlet port (42) when a pump chamber (40) decreases in volume as liquid therein is dispensed through the outlet port, and is adapted to close when the pump chamber increases in volume. The outlet valve comprises a precompression valve operable to allow liquid through the outlet only after a predetermined elevated pressure is established in the pump chamber. The valve has a movable valve member (56) carried on or by a spring member (57) which biases the valve member to a closed position but flexes in response to the elevated pressure in the chamber acting on the valve member to move the valve member to an open position so that liquid can pass from the chamber and thereafter be dispensed through an outlet nozzle (15).
申请公布号
WO2012172276(A1)
申请公布日期
2012.12.20
申请号
WO2012GB00426
申请日期
2012.05.14
申请人
OBRIST CLOSURES SWITZERLAND GMBH;HOFFMANN, CHRISTOPH;PELLENZ, JUERGEN;THANISH, KLAUS;STOELBEN, PETER;GREENWOOD, MATTHEW;NATERSKY, KLAUS
发明人
HOFFMANN, CHRISTOPH;PELLENZ, JUERGEN;THANISH, KLAUS;STOELBEN, PETER;NATERSKY, KLAUS