| 摘要 |
<p>The movable binder has a rounded back with two trough-shaped catches on the inside in which are the ends of bars securing magazines in the binder. Each catch (4) is fixed to the back via an intermediate plate (6) which has a flat portion (6a) secured to the catch, and a second portion (6b) curved to the same radius as the back and secured to it. The design allows standard straight catches to be used with rounded backs of different radii.</p> |
