Patent ID: 7739773

Claim:
A portable blower, comprising: a motor unit that includes a drive motor disposed in an engine housing, and a blower unit, wherein said blower unit is provided with a blower housing that is separate from said engine housing, further wherein said blower unit includes an axial fan that is driven by said drive motor via a drive shaft, wherein during operation of said blower said axial fan is adapted to convey operating air in the direction of an axis of rotation of said axial fan through a blower tube disposed downstream of said axial fan, wherein said motor unit further includes a guide tube on which is secured at least one handle for guiding said blower during operation thereof, further wherein said engine housing is disposed at a first end of said guide tube and said blower unit is disposed at a second end of said guide tube, further wherein said drive shaft extends through said guide tube, further wherein said blower unit, on an end face thereof that faces said guide tube, is provided with at least one air inlet opening via which the operating air is adapted to be drawn into said blower unit, further wherein said blower tube, at an end thereof remote from said guide tube, is provided with an air outlet opening through which the operating air is adapted to be conveyed from said blower unit, further wherein a length of said guide tube measured between said engine housing and said blower housing is at least half of a length of said blower tube, further wherein a length of said axial fan is approximately 0.3 to 1.5 times the length of said blower tube, further wherein said axial fan includes a plurality of fan wheels and a plurality of guide wheels, further wherein all of said fan wheels are identical to one another and all of said guide wheels are identical to one another, each including a recess for receiving a bearing, further wherein said fan wheels are fixedly connected with a drive shaft portion that is driven by said drive shaft, further wherein said guide wheels are stationarially held in said blower housing, further wherein said drive shaft portion is rotatably mounted via two bearings, further wherein a first one of said bearings is disposed at a flow guide element that is disposed adjacent to said air inlet opening, and wherein a second one of said bearings is disposed in said recess in one of said guide wheels.