Patent ID: 8733503

Claim:
An extension ladder stabilizer comprising: a pair of ground engagement members, each having two legs; a ladder rung engagement rod comprising threads along at least a portion of the length of the ladder rung engagement rod disposed in and projecting from each end of a hollow tubular rung of an extension ladder; a pair of rectangular internal support side plates, each having a substantially gear shaped aperture and interfacing with a side rail of an extension ladder; a pair of rectangular external support plates comprising a substantially gear shaped boss on a first face, a hole located substantially in the center of the substantially gear shaped boss receiving said ladder rung engagement rod, and an anchor channel disposed on a second face opposite the first face, respectively, wherein the anchor channels each comprise a straight tube receiving one leg of said ground engagement member; wherein the substantially gear shaped boss of the external support plate is disposed in the substantially gear shaped aperture of the internal support side plate to form an interlocking arrangement between said external support plate and said internal support side plate, facilitating the positioning of said anchor channel relative to said internal support side plate, and inhibiting rotation of said external support plate relative to said internal support said plate.