| 摘要 |
<p>A container assembly including a container (12) with a finish portion (14) with at least one external thread (16) and a press-on, twist-off closure (20) mounted on the container (12). The closure (20) includes a panel (22) and a skirt (14) which together define a generally cylindrical interior recess (26). A deformable gasket (28) with a thread engaging portion (30) is mounted within the interior recess (26). The thread engaging portion (30) has a inwardly extending raised flutes (32) which are circumferentially spaced irregularly about the thread engaging portion (30). The length of each external thread (16) which is spanned by points of contact with . one or more flutes (32) is known as the span length. As a result of the irregular spacing of the flutes (32), the sum of the span lengths of all of the external threads (16) is less than it would be were the flutes (32) spaced regularly. Accordingly, the amount of torque which is necessary to remove the closure (20) is reduced.</p> |
