| CPC A01M 7/0078 (2013.01) [A01C 23/008 (2013.01)] | 20 Claims |

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1. A boom arm assembly, comprising:
a main boom;
a boom tip configured to assume a neutral position and to pivot to a forward position, a rearward position, and an upward position relative to the main boom;
an upper ball joint connecting the main boom to the boom tip;
a first hinge connected to the main boom, the first hinge having a first hinge axis defined between the upper ball joint and the first hinge;
a second hinge connected to the boom tip, the second hinge having a second hinge axis defined between the upper ball joint and the second hinge;
a hinge connecting bar connecting the first hinge to the second hinge;
a first hinge seat attached to the main boom and shaped to receive a portion of the hinge connecting bar proximate the first hinge;
a second hinge seat attached to the boom tip and shaped to receive a portion of the hinge connecting bar proximate the second hinge; and
a spring assembly connecting the boom tip to the main boom at a second ball joint, the spring assembly comprising:
a lever pivotally mounted to the boom tip at a first pin connection;
a first spring having a first end pivotally mounted to the boom tip and a second end pivotally mounted to the lever at a second pin connection; and
an elongated rod connected to the lever at a third pin connection;
wherein the first spring applies a holding force on the boom tip toward the main boom such that the spring assembly provides a break-away threshold;
wherein the boom tip is movable relative to the main boom when the break-away threshold is exceeded; and
wherein the first spring urges the boom tip toward the neutral position relative to the main boom when the boom tip is not in the neutral position.
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