Patent ID: 7325273

Claim:
A suction device configured to be releasably connected to a hand-held power tool ( 4 ) having a drive shaft ( 42 ), comprising: a housing ( 10 ); a suction blower wheel ( 20 ) for producing a suction air stream in a suction path (S) and located in the housing ( 10 ); a rolling bearing ( 28 ) for supporting the suction blower wheel ( 20 ) in the housing ( 10 ); a blower shaft ( 26 ) for driving the suction blower wheel ( 20 ); and a drive coupling ( 38 ) for rotatably and axially connecting the blower shaft ( 26 ) with the drive shaft ( 42 ) of the hand-held power tool ( 4 ), the drive coupling ( 38 ) frictionally connecting the drive shaft ( 42 ) with the blower shaft ( 26 ) for transmitting rotational movement in a connected condition of the drive shaft ( 42 ) with the blower shaft ( 26 ), wherein the drive coupling ( 38 ) circumscribes said drive shaft ( 42 ) and blower shaft ( 26 ) and includes a first coupling member ( 46 ) and a second coupling member ( 44 ), said second coupling member having an elastic friction element frictionally engaging the drive shaft ( 42 ) and the blower shaft ( 26 ) in the connected condition thereof.