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:
Oct. 05, 1999
Filed:
Mar. 30, 1998
Samuel N Davis, Dublin, OH (US);
M Stephen Tschanen, Columbus, OH (US);
Douglas E Lilly, Westerville, OH (US);
Liqui-Box Corporation, Worthington, OH (US);
Abstract
A spout for dispensing liquid from a closed container has a cap that fits over a fitment or neck on the container, the cap being provided with a sleeve within which a reciprocating barrel may slide from a closed position to an open position. The barrel has a longitudinal vent groove on its upper surface that serves as a passage to admit atmospheric air to equalize internal and external pressure. The cap is provided with a flap that blocks the groove when the internal pressure is close to atmospheric pressure, but opens to admit air when the internal pressure drops significantly below the atmospheric pressure outside the container.