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. 18, 2010
Filed:
May. 15, 2007
Dennis L. Steppe, Riverside, CA (US);
John C. Huculak, Mission Viejo, CA (US);
Robert J. Sanchez, Jr., Oceanside, CA (US);
Dennis L. Steppe, Riverside, CA (US);
John C. Huculak, Mission Viejo, CA (US);
Robert J. Sanchez, Jr., Oceanside, CA (US);
Alcon, Inc., Hunenberg, CH;
Abstract
A flow control device includes a fitting having three portals. One of the portals is an entry portal for a liquid, one of the portals is an entry portal for a gas, and the other portal is an exit portal for either the liquid or the gas. A normally closed back flow prevention valve is located in fitting. The back flow prevention valve prevents back flow of liquid through the fitting. The fitting and the backflow prevention valve also minimize or eliminate the formation of air bubbles in the liquid.