CHILD RESISTANT CLOSURES

摘要

A child resistant closure comprises a threaded closure member (12) and an outer cap member (14) fitted around the closure member. A circumferentially configured radially facing ratchet (28) is provided on the closure member (12) and flexible pawl fingers are provided on the cap member, to allow turning of the closure member in the closing sense only. A socket (38) on the cap member (14) is axially engageable against a bias with a square drive (36) on the closure member to allow turning in either sense. The configuration of the ratchet allows extended linear contact area between the pawl fingers (34) and the working surface (32) of the ratchet even in closures of narrow diameter.