Patent Sell-An Automatic Clamping Pencil
Posting ads for 9 years
An automatic clamping pencil with single clamp head comprises metal clip heads(1 and 4), a spring sheathed with the metal clip heads, a pen core tube(6) connected to the spring, a pressing cap(9), a sleeve(2) to stop the metal clip head to move back, a pen tube(8) to be connected by rotary screws, and a pen shell(7) firmly fixed to the pen tube. Because the pawl head of the metal clip head exposes out the pen body to hold the lead core(5) and is in arrowhead type, the lead core may be still used although it is only left 1mm in length at last. In addition, the experiment indicates that this new utility model is suitable to lead cores with difference specifications and clamps them effectively. Users can write smoothly with this new utility model, and the lead core can't be broken, and it can almost be used up and eject the lead core very conveniently.
Pls see the patent link of China: