The Procter Gamble Company

Michael Donald Webb

Brian David Andres

Francisco Miguel De Tavares Duarte Nogueira

William Kater LaSala

Robert J Peterson

Reuben E Oder

Geneva Gail Otten

Robert E Stahley

J Randall Stigall

John E Reifenberger

William Joseph Schmitz

Lid for a container

A liquid dispensing pump is provided with a supply container venting system and a shipping seal. The pump device includes an upper and lower housing which are axially movable relative to each other between open and closed shipping seal positions. The dispensing pump includes a collapsible pump chamber with at least one shipping seal functional element integral with the chamber. The pump includes actuation elements which cooperate to prevent pump actuation when the shipping seal is closed. The pump may also include a tamper evident device to prevent pump actuation prior to tamper evident tab removal. The chamber may also include an integral valve which has the valve member biased against the valve seat. A supply container venting system for the pump comprises a resilient annular flange angled downward from the bellows at the liquid entry end. The annular flange presses against an interior surface of the lower housing to seal a supply container vent opening against communication with ambient air and moisture. The annular flange remains in contact with the interior surface until either a vacuum generated in the supply container by pumping fluid therefrom deflects the flange away from the interior surface or at least one lug on the upper housing contacts and deflects the annular flange when the upper housing is actuated downward. A wiper extends from the lower housing in contact with the telescopingly engaged upper housing to further minimize any moisture entry between housings that could accumulate and inadvertently pass into the supply container.

Pump device with collapsible pump chamber having supply container

A method for stripping an open ended bellows part from an injection mold has as a first step the injection molding of a bellows part. The bellows part has a resilient portion located between a core pin and a first split cavity and a substantially rigid portion located between the core pin and a second cavity. The substantially rigid portion has a first open end and an external undercut portion, and the resilient portion of the bellows part has an inner surface and a second open end. The first split cavity opens laterally to permit the resilient portion of the bellows part to be stripped from the core pin. Compressed gas passes through the core pin to the inner surface of the resilient portion of the bellows part while both open ends of the bellows part are closed off by the second cavity and the core pin. As the cavity and core portions of the mold separate, the second cavity grips the undercut portion of the substantially rigid portion of the bellows part, thereby pulling the resilient portion of the bellows from the core pin while compressed gas maintains the resilient portion expanded. Finally, the second cavity either opens or has a stripper rod to disengage the undercut portion of the substantially rigid portion of the bellows part so that the bellows part may be ejected from the injection mold.

Method for stripping open ended bellows part from injection mold

Growing community of inventors

West Chester, OH, United States of America

Michael Donald Webb