Abstract: A boom assembly includes a first boom member and a second boom member slidable relative to the first member in a first direction. A stop member that at least partially defines a receptacle is attached to the first member. A closure member is attachable to the first member in a fixed position and movable away from the fixed position. A planar wearpad is insertable into the receptacle in the first direction when the closure member is moved away from the fixed position and the second member is positioned on the first member. The stop and closure members inhibit lateral movement of the wearpad in a direction parallel to the plane of the wearpad, and allow movement of the wearpad in a direction transverse to the plane, when the wearpad is positioned in the receptacle. The second member inhibits movement of the wearpad in the direction transverse to the plane.

Abstract: A boom assembly includes a first boom member and a second boom member slidable relative to the first member in a first direction. A stop member that at least partially defines a receptacle is attached to the first member. A closure member is attachable to the first member in a fixed position and movable away from the fixed position. A planar wearpad is insertable into the receptacle in the first direction when the closure member is moved away from the fixed position and the second member is positioned on the first member. The stop and closure members inhibit lateral movement of the wearpad in a direction parallel to the plane of the wearpad, and allow movement of the wearpad in a direction transverse to the plane, when the wearpad is positioned in the receptacle. The second member inhibits movement of the wearpad in the direction transverse to the plane.

Abstract: The invention relates to an apparatus which automatically locks the hood of a vehicle in a position which allows access to the engine. The invention includes a swing arm which is spring loaded and pivotally connected to the support structure of the vehicle, like the vehicle frame, near the hood hinge and away from the engine. When the hood is opened and the hood hinge pivots, the swing arm automatically follows the hood hinge until the swing arm reaches a position which prevents the hood hinge from pivoting in a direction which would result in the hood closing. In this way the invention automatically locks the hood to prevent premature hood closure which could injure the driver or maintenance personnel.