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:
Aug. 22, 2017
Filed:
Jun. 25, 2013
Sanofi-aventis Deutschland Gmbh, Frankfurt am Main, DE;
Thomas Nagel, Tharandt, DE;
Rene Richter, Tharandt, DE;
Robert Witt, Dresden, DE;
Richard Guenther, Dresden, DE;
Martin Graefe, Pirna, DE;
SANOFI-AVENTIS DEUTSCHLAND GMBH, Frankfurt am Main, DE;
Abstract
The invention relates to a stopper arrangement for a drug delivery device, comprising a stopper, a linear actor coupled with one end to the stopper and with an opposite end to a coupling arrangement, wherein the stopper arrangement is configured to be disposed within a container of a drug delivery device, wherein a shape and/or material of the stopper and the coupling arrangement are configured such that a first frictional force between the coupling arrangement and the container is lower than a frictional force between the stopper and the container when the linear actor is contracting and that second frictional force between the coupling arrangement and the container is greater than the frictional force between the stopper and the container when the linear actor is expanding.