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. 25, 1993
Filed:
Jan. 03, 1992
Gary J Campbell, Blanchard, MI (US);
Other;
Abstract
An air filter assembly for a water supply bottle used with a bottle water dispenser. The air filter has a tubular member for attachment to the neck of the water bottle. A breather tube is attached to the side of the tubular member and an air filter is attached to the breather tube. When the water bottle is inverted into a reservoir in a bottled water dispenser, the water drains from the supply bottle until the end of the tubular member is immersed in the water and the partial vacuum in the supply bottle prevents any further water flow. The water in the reservoir can rise and submerge the breather tube connection point to the tubular member. When the water in the reservoir drops below the connection point air will pass through the filter into the bottle to release more water. A check valve can be used in the breather tube to prevent the entry of air into the water supply bottle if the air filter on the breather tube is removed. The air filter assembly can be attached to the neck of the water supply bottle or it can be mounted in the reservoir so the water supply bottle can be connected when inverted or placed in the bottle stand.