Patent ID: 8372042

Claim:
A dose setting mechanism for a medicament delivery device, comprising: an elongated tubular distal housing having opposite distal and proximal ends, wherein the distal housing comprises: threads on an inner surface of the distal housing; and a first window, a second window, and at least one opening on the distal housing's elongated surface; a tubular dose limiting member having opposite distal and proximal ends, wherein the dose limiting member comprises: a first thread segment on an outer circumferential surface at the proximal end configured to cooperate with the threads on the inner surface of the distal housing; first indicia on the outer circumferential surface; a stop surface at the proximal end; and a number of protrusions arranged equidistant to each other along an outer circumferential surface at the distal end; a tubular dose setting member having opposite distal and proximal ends and being coaxially arranged inside the dose limiting member, wherein the dose setting member comprises: a second thread segment having an end surface on an outer circumferential surface at the proximal end configured to cooperate with the threads on the distal housing; second indicia on the outer circumferential surface; and a dose setting knob protruding through the distal end of the distal housing; and a removable lock member attached to the distal housing, wherein the lock member comprises at least one elongated rib on its inner circumferential surface configured to interact with the protrusions of the dose limiting member for locking the dose limiting member in a certain position when the lock member is attached to the distal housing.