METERED FLUID DISPENSING SYSTEM

摘要

A fluid dispensing device having a flexible fluid pouch and a dispensing assembly, the dispensing assembly having a top piece and a bottom piece, the top piece having a flexible actuator including a flexible dome and a flexible flange extension, the bottom piece having a bottom portion of a pump chamber, a pump chamber inlet, a chamber inlet valve, and a bottom portion of an outlet valve, the top piece and the bottom piece mated together to form a pump chamber and an outlet valve, said device configured to allow bidirectional fluid flow through either or both inlet and outlet valves, and to dispense a volume of fluid that is less than the volume of said pump chamber. The flexible pouch may have a single opening or two openings. In the case of a single opening, the entire dispensing assembly is in the interior of the pouch. In the case of two openings, only the flexible dome extends to the exterior of the pouch. The outlet valve is configured so that the more pressure that is applied to the flexible fluid pouch, the more tightly the outlet valve seals.

主权项

1. A fluid dispensing device comprising:
a flexible actuator comprising a flexible dome and a flexible flange extension, a base portion comprising a bottom portion of a pump chamber, a pump chamber inlet, a bottom portion of an outlet valve, said bottom portion of an outlet valve having an upper surface configured to mate with a bottom surface of said flexible flange extension; a dispensing head, comprising a fluid outlet channel in fluid communication with said outlet valve, said flexible actuator mated to said base portion so that said flexible bulb and said bottom portion of a pump chamber form a pump chamber, and so that said flexible flange extension and said bottom portion of said outlet valve form an outlet valve, an inlet valve positioned in proximity to said pump chamber inlet to selectively permit fluid flow through pump chamber inlet.