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:
Mar. 31, 2020
Filed:
Sep. 11, 2015
Applicant:
West Pharmaceutical Services, Inc., Exton, PA (US);
Inventor:
Hubert Jansen, Stolberg, DE;
Assignee:
West Pharmaceutical Services, Inc., Exton, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
A61M 5/28 (2006.01); A61M 5/178 (2006.01); B65B 3/00 (2006.01); B65B 7/28 (2006.01); A61M 5/31 (2006.01);
U.S. Cl.
CPC ...
A61M 5/1782 (2013.01); A61M 5/28 (2013.01); B65B 3/006 (2013.01); B65B 7/2821 (2013.01); A61M 2005/3123 (2013.01);
Abstract
A barrel is provided having open proximal end and a closed distal end, and at least one groove in an interior wall thereof. The groove(s) define a length extending a distance from the open end of the barrel toward the distal end of the barrel and defining a substantially constant depth and width along the length thereof. A piston is in sealing engagement with the interior wall of the barrel. The groove(s) permits fluid to bypass the piston when positioned along the groove(s). At least a portion of the piston is positioned distally from the groove(s), thereby sealing substance within the barrel.