US 10,875,027 B2 · Sizer tooth

Abstract

A sizer tooth assembly for a mineral sizer is described. The tooth assembly includes a horn protrusion extending from a rotatable support, the horn protrusion having a pair of opposed front and rear faces; and a shell structure encapsulating the horn protrusion and defining the outer shape of the sizer tooth; wherein the shell structure comprises exactly two cover formations which are non-releasably secured to one another but not to the horn protrusion, to define when so secured a unitary tooth assembly. Each of the two cover formations seats upon and presents an inward engagement face to a respective one of the pair of opposed front and rear faces of the horn protrusion; and each such engagement face of a cover formation and its corresponding face of the horn protrusion are provided with a complementary arrangement of projections and recesses configured such that when the two cover formations are non-releasably secured to one another the shell structure is releasably connected upon the horn protrusion. A mineral sizer including such tooth assemblies and a method of constructing such a tooth assembly and especially of constructing a replacement for repair are also described.

Claims20

Dependent claims

A sizer tooth assembly for a mineral sizer, the sizer tooth assembly comprising:

a horn protrusion extending from a rotatable support, the horn protrusion having a pair of opposed front and rear faces;
a shell structure encapsulating the horn protrusion and defining an outer shape of the sizer tooth assembly;
wherein the shell structure consists of a first cover formation and a second cover formation, the first cover formation and the second cover formation being non-releasably secured to one another but not to the horn protrusion, wherein each of the first cover formation and the second cover formation is a singular integral structure;
wherein each of the first and second cover formations seats upon and presents an inward engagement face to a respective one of the pair of opposed front and rear faces of the horn protrusion;
and wherein each such inward engagement face of the first and second cover formations and its corresponding face of the horn protrusion are provided with a complementary arrangement of projections and recesses configured to secure the first and second cover formations to the horn protrusion.

2 more elements

A method of assembling a sizer tooth for a mineral sizer or breaker, the method comprising:

providing a horn protrusion extending from a rotatable support, the horn protrusion being shaped to define a pair of opposed front and rear faces;
providing a shell structure consisting of a first cover formation and a second cover formation, the first cover formation and the second cover formation are configured to be non-releasably secured to one another but not to the horn protrusion to define a unitary sizer tooth assembly, wherein each of the first cover formation and the second cover formation is a singular integral structure;
defining on each of the first and second cover formations an inward engagement face which is presented to a respective one of the pair of opposed front and rear faces of the horn protrusion when each of the first and second cover formations seats thereupon, wherein each such engagement face of a cover formation and its corresponding face of the horn protrusion are provided with a complementary arrangement of projections and recesses;
and engaging each of the first and second cover formations onto the horn protrusion via the projections and recesses;
and non releasably securing first and second cover formations to one another such that the first and second cover formations are secured to the horn protrusion.

2 more elements

Dependencies are inferred from the claim text.

Sizer tooth

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Sizer tooth

Life of this patent

Abstract

Claims20