Wearable backing for an abrasive flap disk
AssigneeBlack & Decker Inc.
InventorDonald W. Farber
Life of this patent
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Abstract
A structure for a backing plate of an abrasive disk is disclosed. The structure includes layers of abrasive resin interspersed with layers of reinforcing fiberglass. The layers are generally disk shaped and cover certain radial intervals of the entire backing plate between the inner diameter and the outer diameter. For example, a radial stress profile plotting the stress along a radial line from inner to outer diameter can be determined. The amount and radial positioning of reinforcing layers (e.g., reinforcing fiberglass) may then be determined. An appropriate amount of reinforcing layers may then be placed within the radial intervals that experience the highest stress.
Claims20
An abrasive disk assembly comprising:
- an abrasive disk including a backing plate, the backing plate including a wearing flange and a planar portion;
- a hub assembly attached within a central aperture of the planar portion;
- wherein the backing plate is composed of a reinforcing material and a resin-abrasive mix, and wherein the positioning of the reinforcing material is non-uniform along the radius of the backing plate with respect to thickness.
A backing plate comprising:
- a wearing flange and a planar portion;
- a central aperture defined in the planar portion;
- wherein the backing plate is composed of a reinforcing material and a resin-abrasive mix, and wherein the positioning of the reinforcing material is non-uniform along the radius of the backing plate with respect to thickness.
Dependencies are inferred from the claim text.