Rotary mixing device for fluidic material

A rotary mixer for fluidic, semi-fluidic and quasi-fluidic materials, comprising in combination:

• an elongate central powering shaft having first and second end portions with means for interconnecting a powering source at the first end portion, and a mixing device carried at the second end portion, said mixing device having
• a first circular annulus with quadrantally arrayed first radial elements interconnecting the first annulus to the second end portion of the powering shaft, the first annulus defining a first circular periphery,
• a second circular annulus of the same size as the first annulus having quadrantally arrayed second radial elements interconnecting the second annulus to the powering shaft spacedly inwardly from the second end, with each second radial element of the second annulus being coplanar with one of the first radial elements of the first annulus, the second annulus defining a second circular periphery, and
• elongate linear peripheral elements extending in interconnected quadrantal array between the first and second annuli, with each peripheral element immediately radially outwardly adjacent the radially outer end portions of each pair of the coplanar first and second radial elements, the elongate linear peripheral elements being located within the first and second circular peripheries.