Patent ID: 6425501
Filing Date: 2002-07-30
Classification: B05B

Abstract:
In a dispensing pump comprising a pump body having a closed tubular support formed with a vent opening, a tubular resilient vent valve disposed concentrically inside the support engaging the inside of the support adjacent the vent opening to close the vent opening and having a projection extending through the vent opening, and a trigger pivotally mounted on the pump body, the trigger having a rearward arm with an end adapted to engage the vent valve projection from a lateral direction as the trigger pivots, the improvement wherein the tubular resilient vent valve is tapered having a wider end and a reduced end and its wider end makes line contact with the tubular support about the inside thereof above the vent opening, and an axially disposed barrel disposed concentrically inside the tubular support is sealingly connected to the container and the reduced end of the resilient valve.