Power tool dust collector

A power tool assembly comprising:

• a hand-held power tool;
• a dust collector removably coupled to the power tool, the dust collector including
• a housing,
• a telescoping suction pipe coupled to the housing,
• an electric motor positioned in the housing,
• a suction fan driven by the electric motor and operable to generate a vacuum in the suction pipe,
• a dust container coupled to the housing and positioned upstream of the suction fan,
• a first filter supported by at least one of the housing or the dust container, the first filter being removable from the one of the housing or the dust container for at least one of servicing or replacement,
• a second filter positioned between the suction fan and the first filter to inhibit particles that bypassed the first filter from being impacted by the suction fan, and
• an arm moveably supported by the housing to prevent the dust container from coupling to the housing in the absence of the first filter;
• and
• first and second power tool battery packs each of which is interchangeably coupled with the power tool and the dust collector for separately powering the power tool and the dust collector, respectively.

A power tool assembly comprising:

• a hand-held power tool;
• a dust collector including
• a housing removably coupled to the power tool,
• a telescoping suction pipe coupled to the housing,
• an electric motor positioned in the housing,
• a suction fan driven by the electric motor and operable to generate a vacuum in the suction pipe,
• a dust container coupled to the housing and positioned upstream of the suction fan,
• a filter supported by at least one of the housing or the dust container, and
• a detector supported by the housing, the detector including a shaft defining a rotational axis about which the detector is pivotable, and an arm extending radially from the shaft, the detector biased toward a first position in which the arm protrudes from the housing to prevent the dust container from being coupled to the housing in absence of the filter and movable to a second position to permit coupling of the dust container to the housing when the filter is present;
• and
• first and second power tool battery packs each of which is interchangeably coupled with the power tool and the dust collector for separately powering the power tool and the dust collector, respectively.