Patent ID: 7658011

Claim:
A lopper, comprising: a slender rod; a pulley set, provided inside the slender rod; a drum, mounted at a top of the slender rod; an axial wheel, rotatably deposited in the drum; a first rope, wound around the axial wheel and a first pulley of the pulley set; a fixed blade, fixed outside the drum; a movable blade, having one end formed as a blade portion, an opposite end formed as a driving portion, and an intermediate pivot portion, wherein the movable blade is connected to one end of the fixed blade at the pivot portion, and is swingable against where the movable blade and fixed blade are connected; a linkage, connected to the fixed blade and the driving portion of the movable blade and equipped with a pulley thereon; a flexible linking component, wound around the pulley of the linkage and having a first end thereof fixed at the axial wheel while a second end end is fixed to a positioning member deposited outside of the drum; and a return spring, connected between the movable blade and the drum and exerting a resilience thereof upon the movable blade so as to separate the blade portion of the movable blade from the fixed blade.