| 主权项 |
1. A break-away apparatus for a boom arm comprising a main boom portion and a boom tip, the apparatus being positioned at a joint between the main boom portion and the boom tip, the apparatus allowing the boom tip to assume a neutral position and to pivot to a forward position and to a rearward position with respect to the main boom portion, the apparatus comprising:
a first plate disposed at the joint; a second plate disposed at the joint; a hinge assembly positioned between the first plate and the second plate, the hinge assembly comprising a hinge pin having a longitudinal axis; wherein the first and second plates are in a first position with respect to each other when the boom tip assumes the neutral position, and wherein the first and second plates are movable with respect to each other about the longitudinal axis; and a torsion spring configured to return the first and second plates to the first position after the first and second plates move from the first position. |
