| 摘要 |
A portable powered pruning saw including a power housing having a powered rotatable output shaft; a saw housing having a motion converting mechanism with a rotatable input shaft and a reciprocating output element, and a saw blade reciprocated by the output element; one or more pole extension elements interconnecting the power and saw housings and each including a rotatable shaft, and coupling means to rotatably key all shafts together; a guide on the saw housing including spaced arms that transversely straddle the saw blade with blade guide means thereon engaging opposite sides of the saw blade and with a limb engaging edge adjacent the cutting edge of the saw blade; and handle means including a hand grip on the pole extension element adjacent the power housing, and a shoulder strap from the hand grip adapted to be draped over the head and shoulder of the user.
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