Concrete mixer with plastic drum

A concrete mixer comprising a supporting frame, yoke means mounted on said frame for pivotal movement about substantially a horizontal axis, a mixing drum constructed of plastic material, said drum having an opening in an upper end, a peripheral wall and a bottom, reinforcing means extending over a major portion of an external surface area of said bottom, support means connected to said bottom reinforcing means to rotatably support the bottom of said drum from said yoke means for rotational movement of the drum about a generally centrally located longitudinal axis, and gear means connected to said drum for driving said drum rotationally about said longitudinal axis and separated from and spaced vertically above said reinforcing means.

A concrete mixer comprising a supporting frame, yoke means mounted on said frame for pivotal movement about substantially a horizontal axis, a mixing drum constructed of plastic material, said drum having an opening in an upper end, a peripheral wall and a bottom, reinforcing means extending over a major portion of an external surface area of said bottom, support means connected to said bottom reinforcing means to rotatable support the bottom of said drum from said yoke means for rotational movement of the drum about a generally centrally located longitudinal axis, and gear means connected to said drum for driving said drum rotationally about said longitudinal axis, said reinforcing means being a rigid metal pan extending throughout the area of the plastic bottom of said drum and reinforcing the plastic bottom of the drum continuously radially and circumferentially in relation to the rotational axis.

A concrete mixer comprising a supporting frame, yoke means mounted on said frame for pivotal movement about substantially a horizontal axis, a mixing drum constructed of plastic material, said drum having an opening in an upper end, a peripheral wall and a bottom, reinforcing means extending over a major portion of an external surface area of said bottom, support means connected to said bottom reinforcing means to rotatably support the bottom of said drum from said yoke means for rotational movement of the drum about a generally centrally located longitudinal axis, and gear means connected to said drum for driving said drum rotationally about said longitudinal axis, and two pairs of alternately arranged paddle assemblies mounted interiorly of said drum with the paddles in each pair being diametrically opposed, each of one pair of paddle assemblies including a one piece, inclined paddle, each of the other pair of paddle assemblies including a pair of radially spaced inclined paddles, said paddles in the other pair of paddle assemblies having a length greater than the one-piece paddles to provide a lifting force to concrete mix in the drum.

A concrete mixer comprising a supporting frame, yoke means mounted on said frame for pivotal movement about substantially a horizontal axis, a mixing drum constructed of plastic material, said drum having an opening in an upper end, a peripheral wall and a bottom, reinforcing means extending over a major portion of an external surface area of said bottom, support means connected to said bottom reinforcing means to rotatably support the bottom of said drum from said yoke means for rotational movement of the drum about a generally centrally located longitudinal axis, and gear means connected to said drum for driving said drum rotationally about said longitudinal axis, said frame including a pair of aligned bearing sleeves, said yoke means comprising a generally horizontal member and upwardly extending members having an upper end, a supporting shaft at the upper end of said upwardly extending members of said yoke means rotatably journaled in said bearing sleeves for pivotal movement of said yoke means about an axis defined by said bearing sleeves.

A mixer comprising a mixing drum constructed of plastic material, said drum having an opening in an upper end, a peripheral wall and a bottom support means connected to said drum for rotational movement of the drum about a generally centrally located longitudinal axis, means connected to said drum for driving said drum rotationally about said longitudinal axis, and two pairs of alternately arranged paddle assemblies mounted interiorly of said drum with the paddles in each pair being diametrically opposed, each of one pair of paddle assemblies including a one piece, inclined paddle, each of the other pair of paddle assemblies including a pair of radially spaced inclined paddles, said paddles in the other pair of paddle assemblies having a length greater than the one-piece paddles to provide a lifting force to concrete mix in the drum.

A concrete mixer comprising a mixing drum constructed of plastic material, said drum having an opening in an upper end, a peripheral wall and a bottom, reinforcing means extending over a major portion of an external surface area of said bottom, support means connected to said drum to rotatably support the drum for rotational movement of the drum about a generally centrally located longitudinal axis, and gear means connected to said drum for driving said drum rotationally about said longitudinal axis, said gear means being separated from and spaced vertically above said bottom reinforcing means.