| 主权项 |
1. A scraper device for cleaning a surface, said scraper device comprising:
a base component with a back portion and a front portion; a blade component extending from said front portion; and a flap portion having a first end pivotally mounted to the base component, and a second end having a divergent respective first and second flared surface; wherein during a first direction and a second direction of motion of said base component along said surface, said flap portion is configured to pivot with respect to the based component, to urge a frictional force between the scraper blade component and the surface; and wherein said first direction is opposite to the second direction. |
