Tree pruner
A tree pruner configured to reduce the width of the device to facilitate reduction of shipping costs and store space. The tree pruner includes a leaf spring having a first end mounted onto a first end of a lever, and second end connected to a first end of a stop pin, wherein the stop pin penetrates the lever. When the lever is at a first position in a rest condition at shipping or store front, the leaf spring is in tension to exert force on the stop pin to engage with an outer surface of a back hook to hold the lever at the position. When the lever is pulled to a second position for use, the leaf spring is at rest. The the stop pin penetrates all the way through the lever and engages with an edge of the back hook to serve as an end stop for the lever movement.
1. A tree pruner comprising at a head portion:
a back hook having a first portion connected to a distal end of a pole, a central portion extending distally from the first portion, and an extended portion projecting laterally from the central portion and bending proximally to form a hook;
a lever having a first end pivotally connected to the central portion of the back hook and a second end extending distally from the first end, positioned away from the lateral projection of the extended portion of the back hook;
a blade having a distal end connected to the first end of the lever, and configured to move towards the extended portion of the back hook to complete a cutting motion when the second end of the lever is actuated; and
a leaf spring on an outer surface of the lever, wherein the leaf spring has a first end mounted to the first end of the lever via the pivotal connection between the lever and the back hook, and a second end connected to a first end of a stop pin, wherein the stop pin penetrates a middle portion of the lever.
2. The tree pruner of claim 1 , wherein, in a rest condition, the lever is in a first position, and during the completion of the cutting motion, the actuation of the second end of the lever moves the lever from the first position to a second position,
wherein, when the lever is in the first position, the stop pin does not fully penetrate the lever, the leaf spring is in tension, and the second end of the leaf spring exerts force on the first end of the stop pin, such that a second end of the stop pin engages with an outer surface of the back hook to hold the lever in the first position; and
wherein, when the lever is in the second position, a greater portion of the stop pin penetrates the lever compared to the first position, the leaf spring is at rest, and the stop pin engages with an edge of the back hook to restrict the movement of the lever to where the stop pin engages with the edge of the back hook; and
wherein the tree pruner has a smaller width when the lever is in the first position than the second position.