Patent ID: 6672401
Filing Date: 2004-01-06
Classification: A01B,E02F

Abstract:
A towable scraper system for contour surface grading, comprising:a rigid chassis member having a coupler configured for attachment to a three point tractor hitch; a scraper blade pivotally suspended from said rigid chassis member on a first axis aligned with a towing direction; a blade motivator for causing an angular rotation of said blade around said fist axis; a lift assembly for raising and lowering said rigid chassis member to control a height of said blade relative to a work surface to be graded; a carriage assembly for providing a rolling support for said rigid chassis over said work surface, said carriage assembly pivotally coupled to said rigid chassis on a second axis aligned with said towing direction and at a location opposed to said coupler; wherein said carriage assembly is configured for angular rotation around a said second axis.