Patent ID: 8944177
Filing Date: 2015-02-03
Classification: E02F

Abstract:
1. A scraper comprising: a frame supporting a plurality of wheels; a blade mounted to the frame; a blade height and tilt assembly connected to the frame and having a first set of arm brackets comprising a pair of arms in spaced relation and connected to a first wheel and a second set of arm brackets comprising a pair of arms in spaced relation and connected to a second wheel, wherein the first set of arm brackets and the second set of arm brackets are positioned in spaced alignment to one another; a first actuator connected to the frame and the first set of arm brackets, and a second actuator connected to the frame and the second set of arm brackets; the first set of arm brackets and second set of arm brackets have a first end and a second end, the first set of arm brackets pivotally connected to the frame adjacent the first end and pivotally connected to the first actuator adjacent the second end; the second set of arm brackets pivotally connected to the frame adjacent the first end and pivotally connected to the second actuator adjacent the second end; and a control system connected to the first actuator and the second actuator, a first antenna mounted to the frame to measure a height of the blade, and a second antenna mounted to the frame to measure the tilt of the blade the first antenna and second antenna configured to transmit GPS signals to the control system such that the control system actuates the first actuator and the second actuator based upon the measured height and tilt of the blade to raise and lower the height of the blade and to adjustably tilt the blade to varying angles.