| 摘要 |
<p>A portable mixer (10) for use with an open top mixing container (38) for mixing concrete or the like as having a pair of inboard rotary mixing blades (22, 24) and a pair of outboard mixing blade assemblies (26, 28) mounted on a generally horizontal rotary shaft (20). The outboard mixing blades are made up of a central hub (46) removably affixed to the shaft. A peripheral ring (48) extends about the hub and is connected by a plurality of spokes (50). The peripheral ring has a diameter greater than that of the intermediate blades in order to prevent the intermediate blades from engaging the mixing container. A plurality of rotary disc blades (52) are pivotally mounted on one of the plurality of spokes. The rotary disc blades have a diameter sufficiently large to cause a portion of the rotary disc blades to extend outwardly beyond the peripheral ring in order to engage the mixing container sidewalls.</p> |
