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. 27, 2021
Filed:
Mar. 29, 2019
Applicant:
Rapak, Llc, Bloomfield Hills, MI (US);
Inventors:
Paul N. Georgelos, Naperville, IL (US);
Kosmas Kasimatis, Chicago, IL (US);
Ronald E. Kieras, Woodstock, IL (US);
Matt Ruschmeier, Glencoe, MN (US);
Assignee:
RAPAK, LLC, Bloomfield Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 7/02 (2006.01); B29C 45/00 (2006.01); B29K 21/00 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
F16K 7/02 (2013.01); B29C 45/0001 (2013.01); B29C 45/0055 (2013.01); B29K 2021/003 (2013.01); B29L 2031/7506 (2013.01);
Abstract
A duckbill valve includes a flexible and hollow body having a first shape upon being formed by injection molding. The body in the first shape has a first opening at a first end and a second opening at a second end. The body is configured to be inverted into a second shape. The second shape has a first opening at a first end and has a slit at a second end. The slit is defined by lips that are pressed together to form a seal.