Patent ID: 6155246
Filing Date: 2000-12-05
Classification: B08B,B23D,B23Q

Abstract:
A power cutter, comprising:a main body provided with a motor;a work-cutting portion, including a circular cutting blade adapted to be rotated by said motor and a safety cover disposed over and covering both sides of an edge portion of said cutting blade so as to form, together with said cutting blade, a dust-discharging passageway within the safety cover, the safety cover including a peripheral wall portion and side wall portions;a fan having a fan case with a bottomed cylindrical portion attached in an opening of said safety cover for sucking dust generated during a cutting operation using the circular cutting blade and removing the sucked dust from said dust-discharging passageway of the safety cover;a barrier wall within the dust-discharging passageway and extending between the side wall portions and the peripheral wall portion of the safety cover so as to substantially block the dust-discharging passageway, the barrier wall having a slit for the cutting blade;a main dust-sucking port formed in the bottomed cylindrical portion of the fan case and disposed in front of the barrier wall with respect to the rotational direction of the cutting blade, anda supplementary dust-sucking port formed in the bottomed cylindrical portion of the fan case and disposed behind the barrier wall with respect to the rotational direction of the cutting blade for sucking dust from the dust-discharging passageway that leaks past the barrier wall through the slit.