×

Grade indicator for excavation operations

  • US 7,857,071 B1
  • Filed: 08/05/2005
  • Issued: 12/28/2010
  • Est. Priority Date: 08/05/2005
  • Status: Active Grant
First Claim
Patent Images

1. A grade indicator for use in earth grading operations using earth moving equipment comprising:

  • a scrolling graphical scale;

    a first indicator on said scrolling graphical scale indicating a desired grade range, said first indicator comprising an area of color different from a color outside the area, said area bounded between two points on said scrolling graphical scale, one point being an upper-bound of the desired grade range and one point being a lower-bound of the desired grade range;

    a second indicator for providing an indication on said scrolling graphical scale of a position of a cutting blade on an earth moving machine; and

    a third indicator for providing an indication that said cutting blade is not within said desired grade range.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×