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:
May. 04, 1999
Filed:
Oct. 14, 1997
M Edmund Ellion, Santa Ynez, CA (US);
Other;
Abstract
A hand pump spray bottle does not leak the liquid contents through the air inlet port during operation when the bottle is oriented so that the inlet port is covered with liquid. The air inlet port is in circuit with an optional void volume which in turn is in fluid communication with the interior of the bottle through a tubular section. The void volume, where present, and the tubular section act as a reservoir to store the liquid from the bottle that would normally reach the air inlet port. When the hand pump is operated, liquid is removed from the bottle and the pressure therein decreases. When the pressure within the bottle decreases to a value that is equal to the atmospheric pressure minus the product of the density of the liquid contents times the height of the liquid above the air inlet port, atmospheric air will force the liquid in the void volume, where present, and the tubular section back into the bottle and atmospheric air then can enter the bottle to maintain the pressure substantially constant thereafter.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile