Agitator

Claim 2

An agitating apparatus comprising an agitating blade assembly, said agitating blade assembly including upper and lower flat horizontal circular disk means which are parallel to one another and which are spaced apart by a plurality of radially extending curved plate means, said upper disk means being provided with a centrally disposed opening, a plurality of radially extending flat blade plate means attached to the bottom side of the lower disk means, the flat blade plate means having horizontal bottom edges which are parallel to said lower disk means, and agitating shaft means extending through the centrally disposed opening and secured to the top side of the lower disk means.

Claim 3

An agitating apparatus comprising an agitating blade assembly, said agitating blade assembly including upper and lower circular disk means which are spaced apart by a plurality of radially extending curved plate means, said upper disk means being provided with a centrally disposed opening, a plurality of radially extending flat blade plate means attached to the bottom side of the lower disk means and agitating shaft means extending through the centrally disposed opening and secured to the top side of the lower disk means, wherein the curved plate means extend into the centrally disposed opening.

Claim 4

An agitating apparatus comprising an agitating blade assembly, said agitating blade assembly including upper and lower circular disk means which are spaced apart by a plurality of radially extending curved plate means, said upper disk means being provided with a centrally disposed opening, a plurality of radially extending flat blade plate means attached to the bottom side of the lower disk means and agitating shaft means extending through the centrally disposed opening and secured to the top side of the lower disk means, wherein the curved plate means extend into the centrally disposed opening.

Claim 5

The apparatus of claim 2, wherein the curved plate means are tapered to a point extending from the periphery of the opening into said opening.

Claim 6

The apparatus of claim 2, wherein the curved plate means extend from the periphery of the disc means into the centrally disposed opening.

Claim 7

The apparatus of claim 2, wherein the flat blade plate means extend inwardly from the periphery of the lower disk means to a position spaced from the center of said disk means.

Claim 8

An aeration-agitating apparatus comprising a plurality of radially extending flat blade means attached to the underside of a lower flat horizontal circular disk means, said flat blade means having lower horizontal edges which are parallel to said lower disk means, a plurality of substantially radially extending curved blade means attached at their bottoms to the upper side of said lower disk means, an upper flat horizontal circular disk means attached at the bottom side thereof to the tops of said curved blade means, and connecting means for connecting at least one of said disk means to rotating means.

Claim 9

An aeration-agitating apparatus comprising a plurality of radially extending flat blade means attached to the underside of a lower flat horizontal circular disk means, said flat blade means having lower horizontal edges which are parallel to said lower disk means, a plurality of substantially radially extending curved blade means attached at their bottoms to the upper side of said lower disk means, an upper flat horizontal circular disk means attached at the bottom side thereof to the tops of said curved blade means, and connecting means for connecting at least one of said disk means to rotating means.

Claim 10

An apparatus according to claim 6, characterized in that said upper disk means is provided with a centrally disposed opening and in that said connecting means includes an agitating shaft means extending through the centrally disposed opening and attached to the upper side of said lower disk means.

Claim 11

An apparatus according to claim 7, characterized in that said agitating shaft means is attached to the upper side of said lower disk means by way of an annular cylindrical boss, said boss being integral with said lower disk means.

Claim 12

An apparatus according to claim 6, characterized in that said upper disk means is substantially smooth over the entire surface of the upper side thereof up to the edges of said opening, said opening being formed as a bore through said upper disk means, the edges of said bore intersecting with the surface of the upper side of said upper disk means such that said bore is open to the surrounding medium in all directions above said upper disk means.

Claim 13

An apparatus according to claim 6, characterized in that both said flat blade means and said curved blade means extend substantially perpendicularly with respect to the surfaces of the respective disk means.

Claim 14

An aeration-agitating apparatus comprising a plurality of radially extending flat blade means attached to the underside of a lower circular disk means, a plurality of substantially radially extending curved blade means attached at their bottoms to the upper side of said lower disk means, an upper circular disk means attached at the bottom side thereof to the tops of said curved blade means, and connecting means for connecting at Least one of said disk means to rotating means, said upper disk means being provided with a centrally disposed circular opening, each of said curved blade means tapering downwardly from the edge of said upper disk means which delimits the opening to respective points located on the lower disk means radially inwardly from said edge.

Claim 15

An aeration-agitating apparatus comprising a plurality of radially extending flat blade means attached to the underside of a lower circular disk means, a plurality of substantially radially extending curved blade means attached at their bottoms to the upper side of said lower disk means, an upper circular disk means attached at the bottom side thereof to the tops of said curved blade means, and connecting means for connecting at Least one of said disk means to rotating means, said upper disk means being provided with a centrally disposed circular opening, each of said curved blade means tapering downwardly from the edge of said upper disk means which delimits the opening to respective points located on the lower disk means radially inwardly from said edge.

Claim 16

An apparatus according to claim 1, characterized in that said opening is formed as a bore through said upper disk means, the edges of said bore intersecting with the flat upper surface of said upper disk means such that said bore is open to the surrounding medium in all directions above said upper disk means.