| 摘要 |
A pruning device that includes a blade, a housing for the blade, a piston-and-cylinder unit, and an elongated, rigid member connecting the piston-and-cylinder unit to the blade. A tank containing compressed air operates the piston-and-cylinder unit which, in turn, drives the blade out of an inoperative position to cut an object. The blade is completely inside the housing in its inoperative position.
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