US 11,143,306 B1 · Self-aligning seal

Abstract

A self-aligning dust seal assembly for rock crusher machines and particularly gyratory crusher machines has a dust seal and a seal guide that extends from the dust seal in a cone shape to enable alignment of the dust seal when the main shaft is lowered into position. The dust seal has a body portion that is disc shaped. There is an inner seal surface around the inner perimeter of the dust ring that seals against an inner element of the crusher. The seal guide extends down and outward from a connected portion with the dust seal that is proximal the inner perimeter of the dust seal. The seal guide is cone shaped and extends outward in a convex shape from the connected portion. The cone shape of the seal guide may nest on a corresponding flange that is fixed in the rock crusher machine, for example.

Claims21

Dependent claims

A dust seal assembly for a rock crusher comprising:

a) a dust seal ring comprising:
i) an aperture;
ii) a first radially extending surface against the main shaft;
iii) a second radially extending surface;
iv) inner perimeter;
v) an outer perimeter;
vi) a width;
and
vii) an inner seal surface configured around the inner perimeter;
and
b) a seal guide comprising:
i) an axially extending connected portion extending from the second radially extending surface of the dust seal ring;
ii) a funnel portion;
and
iii) a funnel end;
wherein the seal guide is attached to the dust seal proximal the inner seal surface by the axially extending connected portion and wherein the funnel portion extends outward to a funnel end in a convex shape.

13 more elements

Dependencies are inferred from the claim text.

Self-aligning seal

Life of this patent

Self-aligning seal

Life of this patent

Abstract

Claims21