Electric bush cutter

Details Electric bush cutter Electric bush cutter

2008-03-25

2010-10-05

Ashley, Boyer D. (Department: 3724)

Cutlery

Cutting tools

With blade moving means

C056S255000

Reexamination Certificate

active

07805844

ABSTRACT:
An electric bush cutter includes an electric motor, which rotates a cutting edge through a centrifugal clutch, and an operating unit capable of adjusting rotational speed of the electric motor in accordance with an operation amount of the operating unit. A starting region including a rotational speed range from a stopped state of the electric motor to fastening of the centrifugal clutch, a common-use region corresponding to a rotational speed range suitable for bush-cutting by the electric bush cutter, and a transition region corresponding to a rotational speed range of the electric motor from the starting region to the common-use region are set. A rate of change in the rotational speed of the electric motor with respect to the operation of the operating unit in the transition region is greater than those in the starting region and common-use region.

REFERENCES:
patent: 6591507 (2003-07-01), Kobayashi et al.
patent: 2002/0124416 (2002-09-01), Warashina et al.
patent: 05-122979 (1993-05-01), None
patent: 2006-217843 (2006-08-01), None

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