Abstract: A bypass pruning tool with a manual dial adjustment for varying the degree of blade and handle opening. A rotary drum dial uses a nautilus cam with a shaft cam-follower to provide adjustment of the blade and handle openings in a continuous range. A blade locking mechanism provides position closure of the blades.

Abstract: A bypass pruning tool with a manual dial adjustment for varying the degree of blade and handle opening. A rotary drum dial uses a nautilus cam with a shaft cam-follower to provide adjustment of the blade and handle openings in a continuous range. A blade locking mechanism provides position closure of the blades.

Abstract: A hand pruner having a first and second handle, the first handle having a hook, formed at a far end, the second handle having a cutting blade formed at the far end. The first handle and hook and second handle and blade pivotally connected for movement with respect to each other. The blade and second handle having a cup formed between the blade and second handle. The hook and first handle having a cup formed between the hook and first handle. The cutting edge of the hook is formed along two concave intersecting arcs of different diameters, the smaller diameter arc located next to the pivot. The cutting edge of the blade is formed along two convex intersecting arcs having diameters that complement the two concave arcs in the hook cutting edge.

Abstract: A hand pruner having a first and second handle, the first handle having a hook, formed at a far end, the second handle having a cutting blade formed at the far end. The first handle and hook and second handle and blade pivotally connected for movement with respect to each other. The blade and second handle having a cup formed between the blade and second handle. The hook and first handle having a cup formed between the hook and first handle. The cutting edge of the hook is formed along two concave intersecting arcs of different diameters, the smaller diameter arc located next to the pivot. The cutting edge of the blade is formed along two convex intersecting arcs having diameters that complement the two concave arcs in the hook cutting edge.

Abstract: A pruning lopper with an adjustable attachment mechanism to provide for versatile cuts of tree branches and shrubs. The attachment mechanism is a ball joint that can rotate in an x-direction, a y-direction, around the axis of rotation of the pole, or any combination of the three. A pulley system internal to the pole prevents entanglement with tree branches while in operation.