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:
Jul. 28, 2020
Filed:
Jan. 10, 2019
Applicant:
Green Drain Inc., Naples, FL (US);
Inventor:
Frank Landon, Santa Ana, CA (US);
Assignee:
GREEN DRAIN INC., Naples, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E03C 1/26 (2006.01); E03F 5/042 (2006.01); F16K 15/14 (2006.01);
U.S. Cl.
CPC ...
E03C 1/26 (2013.01); E03F 5/042 (2013.01); F16K 15/148 (2013.01);
Abstract
A drain insert is described that provides a valve that prevents backflow of objects and materials through the drain inlet and which has an internal wall with a convex curvature. This convex curvature, which can be elliptical, provides improved fluid flow rates relative to straight walled, cylindrical configurations, permitting small diameter drains to utilize the drain insert while meeting IAPMO flow rate requirements.