Patent ID: 8424615

Claim:
A hand-held power tool system, comprising: a vacuum unit; a pistol-shaped, hand-held power tool including a housing having first and second ends, said housing having a handle attached to said first end, said housing includes a drive unit, a drive shaft, a fan connected to the drive shaft, and a suction inlet fluidically connected to a suction passageway therethrough, wherein, during use, the drive unit transmits torque to the drive shaft which, in turn, transmits torque to the fan which is capable of producing suction in the vacuum unit and conveys air through the suction passageway through the housing; said power tool having a working direction extending from the handle toward the second end of the housing; a coupling device located on the housing and extending along the housing in the working direction, said coupling device slidably coupling in the working direction the vacuum unit directly to the hand-held power tool, said coupling device including an interface and an attaching unit, said interface, during use, allowing the hand-held power tool to either drive, or input power to, the vacuum unit that is secured to the tool by the coupling device; said vacuum unit having a suction conduit, said vacuum unit being attached to the hand-held power tool by means of said coupling unit such that said suction conduit is connected to said vacuum inlet, whereby as the fan produces suction in the vacuum unit, air travels through the suction conduit of the vacuum unit and the suction passageway of the hand-held power tool; at least one auxiliary unit that is provided to be coupled directly to the hand-held power tool for use separately from, and in place of, the vacuum unit by means of the coupling device; and said interface having an electrical contact element which serves to produce an electrical connection between the power tool and an electrical contact element of one of said vacuum unit or said at least one auxiliary unit.