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:
Dec. 07, 2021
Filed:
Oct. 09, 2018
Amgen Inc., Thousand Oaks, CA (US);
Julian Jazayeri, Woodland Hills, CA (US);
Ronald Forster, Simi Valley, CA (US);
Jolita Seckute, Thousand Oaks, CA (US);
Olivia Alice Henderson, Newbury Park, CA (US);
Kristen Brown, Ventura, CA (US);
Gregory Gordon, Moorpark, CA (US);
Rasmus Øhlenschlæger, Copenhagen V, DK;
Peter Dan Kaare Soelberg, Gentofte, DK;
AMGEN INC., Thousand Oaks, CA (US);
Abstract
A plunger configured as described herein provides geometry optimizations to minimize friction magnitude and variability during use by maintaining low deformation under large extrusion forces. More specifically, plunger embodiments described herein minimize a contact area between the plunger and a syringe or chamber, while also maintaining high contract pressures to maintain container closure integrity. Moreover, the plunger embodiments are configured to have minimal or no increase in the contact area under high loads associated with the delivery of viscous products.