Abstract
A power driven reciprocating blade hedge trimmer includes a speed-reducing gear train with a sun gear, a plurality of planet gears, and a surrounding hollow drum-like orbiting gear element that seals in gear train lubricant and is formed to have an outer peripheral sinuous groove serving as a cam. A pin-engaging, guided, reciprocating cutting blade element of the hedge trimmer is driven by engagement of the pin and the groove shaped cam to produce reciprocating cutting motion aligned with the axis of the rotating power source. Resilient damping elements are affixed to an end of a blade supporting element where it is held by the hand-held portion of the device, to attenuate and isolate undesirable vibrational feedback generated during reciprocation of the cutting blade element.
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