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:
Sep. 24, 2019
Filed:
Sep. 08, 2014
Sanofi, Paris, FR;
Stefan Bayer, Würselen, DE;
Wolfgang Pelzer, Kreuzau, DE;
Björn Wilden, Simmerath, DE;
Philipp Zeitz, Aachen, DE;
Sanofi, Paris, FR;
Abstract
A drive mechanism of a drug delivery device for dispensing of a dose of a medicament, includes an elongated housing extending in an axial direction, a piston rod to operably engage with a piston of a cartridge to displace the piston in axial distal direction, a drive sleeve rotatably supported in the housing at least in a dose incrementing direction against the action of a spring element, and a ratchet mechanism to rotatably fix the drive sleeve relative to the housing. A first ratchet body has a first and a second ratchet element to alternately engage with a toothed profile of a second ratchet body. One of the first and second ratchet bodies is operably engaged with the housing and wherein the other one of the first and second ratchet bodies is operably engaged with the drive sleeve.