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US 8,007,347 B1Granted
Rotary abrading tool
AssigneeDynabrade, Inc.
InventorsMark Lampka, Matthew Giles
Life of this patent
Estimating the term…
Abstract
The present invention relates to rotary abrading tools of the erasure-type. The invention includes a wheel assembly comprising an annular eraser wheel having an outer crown of radially directed teeth, a central core of an elastomeric material that radially expands during operation, and a pair of discoid hubs secured on opposite axial ends of the eraser wheel. The teeth of the eraser wheel are helically arranged.
Claims15
A rotary abrading tool assembly, the assembly comprising:
- a rotary abrading tool having a rotary driven shaft;
- an annular wheel of an elastomeric material having a central axis of rotation, the wheel comprising:
- an outer crown of radially projecting teeth, the teeth being helically arranged about the central axis of rotation;
- an inner annular recess having a first and second axial side, the recess defining a plurality of axially extending slots on the first and second axial sides;
- and,
- a central aperture defined by the annular recess;
- a cylindrical core of an elastomeric material, the core defining a through-bore along its central axis;
- and,
- a first and second discoid hub, each hub having a plurality of axially extending members, and each hub defining a central opening, wherein the core is arranged in the central aperture such that the central axis of the core is collinear with the central axis of rotation of the wheel, the circumferential surface of the core being in frictional engagement with the annular recess, wherein the first and second hubs are disposed on the first and second axial sides of the annular recess, respectively, such that the plurality of axially extending members of each hub are inserted in the plurality of axially extending slots, and wherein the central openings of the first and second hubs and the through-bore of the core are arranged to receive the rotary driven shaft.
6 more elements
A wheel assembly for a rotary abrading tool comprising:
- an annular wheel of an elastomeric material having a central axis of rotation, the wheel comprising:
- an outer crown of radially projecting teeth, the teeth being helically arranged about the central axis of rotation;
- an inner annular recess having a first and second axial side, the recess defining a plurality of axially extending slots on the first and second axial sides;
- and,
- a central aperture defined by the annular recess;
- a cylindrical core of an elastomeric material, the core defining a through-bore along its central axis;
- and,
- a first and second discoid hub, each hub having a plurality of axially extending members, and each hub defining a central opening, wherein the core is arranged in the central aperture such that the central axis of the core is collinear with the central axis of rotation of the wheel, the circumferential surface of the core being in frictional engagement with the annular recess, wherein the first and second hubs are disposed on the first and second axial sides of the annular recess, respectively, such that the plurality of axially extending members of each hub are inserted in the plurality of axially extending slots, and wherein the central openings of the first and second hubs and the through-bore of the core are arranged to receive a rotary driven shaft of the rotary abrading tool.
5 more elements
Dependencies are inferred from the claim text.