Apparatus for dispensing products from a self-sealing dispenser
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 29, 1987
Issued Date -
N/A
app pub date -
Feb 26, 1985
filing date -
Feb 26, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum pump dispenser has a primary compartment and a pumping compartment. The pumping compartment has an vacuum pump, having a flexible dome, movable to reduce the volume of the pumping compartment and dispense product therefrom, and a spout, having an opening through which product is dispensed, extending from the pumping compartment. The dispenser is self-sealing because the spout is sealed by a closure member having a sealing tip. The closure member is biased into a position where the tip closes the opening in the spout when the pumping compartment is in an unoperated position. The closure member is responsive to movement of the the flexible dome to move the tip out of the closed position to permit dispensing.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 38 Citation Count
- A47K Class
- 0 % this patent is cited more than
- 38 Age