| 摘要 |
The invention provides a single, universal crayon sharpener capable of accommodating many different sizes of crayons or other similar marking instruments. The invention includes asymmetrical sharpening slots (30,34) and cutting flanges (32,36) which cooperate with an internal guide wall (38) to ensure the proper placement and sharpening of a large range of crayon sizes. The use of asymmetrical sharpening slots and cutting flanges, and an internal guide wall, in addition, permits the efficient reinforcement of the sharpener to resist the forces and stresses generated during the sharpening process. |
