Patent ID: 7503629

Claim:
A locking device operable for locking a plow pick having a pick shank that is inserted into a receptor box of a pick holder, the locking device comprising: a retaining pin located in an opening on a face of the pick holder and in a locking groove; and a deformable clamp element for securing the retaining pin, the deformable clamp element including a first leg operable for insertion into a retainer in the pick shank and a second leg operable for insertion into a corresponding locking recess located on the retaining pin, wherein the first leg and the second leg are positioned at an angle to each other; the second leg includes a trunnion that protrudes from a front of the first leg and projects into the locking recess; the trunnion includes an annular enclosed opening that extends to a rear of the first leg; and the first leg has an oval cross section.