The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 1999
Filed:
Dec. 18, 1996
Robert Bennett, Easton, CT (US);
James Lynn Turbett, Stamford, CT (US);
Mark John Iaia, Valley Cottage, NY (US);
John Bengston, Ridgefield, CT (US);
Chesebrough-Pond's USA Co., Division of Conopco, Inc., Greenwich, CT (US);
Abstract
A pump dispenser is described for dispensing a product through a pumping mechanism that draws product from a storage container upwards through a dip tube, across a check valve, into a collecting chamber from which it is dispensed through a one-way monitoring valve and exits a nozzle. Flow is initiated by compression of a domed elastomeric wall covering the collecting chamber. A vent system of conduits including a conical ring valve brings air into the container to equalize pressure upon release of compression against the elastomeric wall. The one-way monitoring valve, downstream from the collecting chamber, may be formed as a duckbill valve of elastomeric rubber having an exit slit at the dispensing end. This slit, normally closed, will open upon pressure from a product flow. Excellent control of dispensing amounts is achieved through the pumping mechanism.