B - Operations – Transporting – 27 – B
Patent
B - Operations, Transporting
27
B
143/28, 164/60
B27B 9/00 (2006.01) A01G 3/08 (2006.01)
Patent
CA 1207635
ABSTRACT OF THE DISCLOSURE A portable power tool is provided herein for cutting branches from standing trees. The tool is a type that has an elongated rigid tubular member having a longitudinal axis, a front end and a rear end, a rotary cutting blade operatively mounted to the front end of the elongated rigid tubular member, such member being adapted to be pulled substantially axially downwardly for cutting the branches, and a light weight engine operatively connected to the rear end of the tubular member to drive the cutting blade through power transmission means. A first guide member is operatively connected to the tubular member and has a front bottom guide surface adapted for contact with a body surface of the trees, the front bottom guide surface lying in substantially the same plane as a flat bottom surface of the cutting blade, the front bottom guide surface extending substantially along a partial circumference of said cutting blade. A second guide member is operatively connected to the tubular member and has a rear bottom guide surface adapted for contact with the body surface, the rear bottom guide surface lying substantially in that plane and extending in a direction of the longitudinal axis of the tubular member, the second guide member having a pair of side guide surfaces each adapted for contact with a side surface of each of the trees, and each of the side guide surfaces lying in a plane substantially vertical to that plane. In this way, the cutting blade can be properly positioned with respect to a branch to be cut and also to a body surface of a tree. In use, the portable power tool cuts branches from standing trees without injuring the body surface of the tree, and providing each cut end face substantially flush with the body surface of the tree.
448477
Borden Ladner Gervais Llp
Yamada Machinery Industrial Co. Ltd.
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