Downcrowding boom assembly

Details Downcrowding boom assembly Downcrowding boom assembly

E - Fixed Constructions

21

B

255/35, 255/52

E21B 19/087 (2006.01) E21B 15/04 (2006.01)

Patent

CA 1075225

ABSTRACT A self-contained, portable, extensible boom assembly for detachable mounting on a vehicle such as on the open top box body of a truck has power driven boom actuating mechanism and down- crowding storage mechanism activated by said power driven mechanism for maintaining a downcrowding load on a driver tool suspended from the boom together with mechanism for controlling the extension of the boom to maintain a straight line alignment of the tool as it advances under the downcrowding load. The portable self-contained assembly can carry its own power source such as a battery or can be driven through a power take-off from the engine of the truck on which it is mounted. The assembly is unitary, relatively light in weight, easily transported, and is easily mounted on and removed from a truck vehicle without altering the construction of the vehicle.

286967

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