Abstract: An aerial vegetation trimming system. The aerial vegetation trimming system may include a saw assembly, wherein the saw assembly may include a plurality of saw blades disposed along a length of a beam. The aerial vegetation trimming system may further include an electric motor operatively connected to the saw assembly, wherein the electric motor is configured to drive the plurality of saw blades; and at least one boom disposed between the electric motor and a vehicle, wherein the at least one boom is configured to connect the saw assembly to the vehicle.

Abstract: There is disclosed tree trimmer apparatus for installation on a helicopter or the like including a boom hanging vertically downward from the helicopter carrying a plurality of circular saws arranged with their blades nearly adjacent over a length of at least twenty feet on the boom, which is attached to the helicopter in a manner to be constrained against rotation about a vertical axis and to have rotational movement about a horizontal axis at right angles to the normal direction of motion of said helicopter; the blades are preferably powered by a hydraulic motor with groups of five 24-inch blades being driven through belts by one hydraulic motor provided with hydraulic fluid under pressure from a pump in the helicopter. A foot at the bottom of the boom extends to the rear and permits the apparatus to be landed with the bottom of the boom on a landing surface by maneuvering the helicopter backward to lay the boom and saw blades on the ground in front of the helicopter.