| 摘要 |
A collapsible writing instrument including a first plate pair consisting of lateral and oppositely lateral plates having upper and lower ends; a first hinge interconnecting the lateral and oppositely plates' lower ends; a second plate pair consisting of an upper lateral plate and lower lateral plate having proximal and distal ends; second hinge interconnecting the lateral plate's upper end and the lower lateral plate's proximal end; a third hinge interconnecting the upper and lower lateral plates' distal ends; a third plate pair consisting of an upper oppositely lateral plate and a lower oppositely lateral plate having proximal and distal ends; a fourth hinge interconnecting the oppositely lateral plate's upper end and the lower oppositely lateral plate's proximal end; a fifth hinge interconnecting the upper and lower lateral plates' distal ends; and a pen cartridge attached to the upper lateral and upper oppositely lateral plates' proximal ends. |
