| 摘要 |
<p>The writing implement contains refills, longitudinally moved by a rotary movement, esp. two-coloured ball point pens with slotted link control. Sliding elements are longitudinally moved in slots, to cause the advance or one refill, and the return of the other. Th slotted link sleeves (1, 2) are punched, and the sliding elements (80) engage via a U-shaped clamp at the crossing points of the staggered slots. The sliding elements are integrally formed with the refill carrier, having an elastic zone between them. The sleeves are formed as flat metal plates, with nose projections.</p> |
