Patent ID: 6910289

Claim:
A scraping device comprising: a frame having walls defining an interior wherein the interior defines an area substantially enclosed by the walls and a base beneath the walls wherein the frame further has a length defined between a first end and a second end wherein the first end is opposite to the second end wherein opposing walls of the frame connect the first end to the second end of the frame; a plate at the first end of the frame; a first cylinder attached to the plate wherein movement of the first cylinder causes the plate to move towards the second end of the frame within the interior of the frame; a lip having walls defining an interior and an exterior wherein the exterior of the lip is connected to the opposing walls of the frame at a single point on each of the opposing walls of the frame wherein the lip pivots at the single point on each of the opposing walls; and a second cylinder between one of the opposing walls at the second end of the frame and the exterior of the lip wherein movement of the second cylinder moves the lip towards the first end of the frame.