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:
May. 02, 2023
Filed:
Mar. 11, 2019
Sanofi, Paris, FR;
Matthew Meredith Jones, Warwickshire, GB;
Sanofi, Paris, FR;
Abstract
The present disclosure relates to a ratchet mechanism and to an injection device for expelling of a number of preset or user-selectable doses of a medicament. The ratchet mechanism comprises a housing and a ratchet member that is circularly shaped and rotationally supported relative to the housing. The ratchet member comprises a ratchet surface, a plurality of ratchet features on the ratchet surface, and one or more intermediate ratchet sections on the ratchet surface extending between the plurality of ratchet features. The ratchet mechanism further comprises a counter ratchet member that is circularly shaped, coaxially arranged relative to the ratchet member, rotatable relative to the ratchet member at least along a first sense of rotation, and rotationally supported relative to the housing. The counter ratchet member comprises a counter ratchet surface, a plurality of counter ratchet features on the counter ratchet surface, and one or more intermediate counter ratchet sections.