Tufted buffing pad

Patent metadata

Field	Value
Publication number	US-9415483-B2
Application number	US-201013319707-A
Country	US
Kind code	B2
Filing date	May 13, 2010
Priority date	May 13, 2009
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A buffing pad is comprised of a hub with a central opening for attaching the same to a power buffer. The pad includes a layer of tufted wool or other fibrous buffing medium spaced from but surrounding the hub and a block of material such as a cylindrical block of foam positioned between the fibrous buffing medium and the hub. The block of material includes an aperture therethrough that is in alignment with the central opening in the hub. The dimensions of the block of material are such as to prevent tufts of the fibrous buffing medium from entering the central opening of the hub and interfering with the ability of the buffing pad to be attached to the power buffer.

First claim

What is claimed is:

1. A double-sided buffing pad comprising:
a backing plate comprising a central opening for attaching the same to a drive shaft or spindle of a power buffer;
a layer of fibrous buffing medium positioned along each side of the backing plate with the fibrous buffing medium extending outwardly from the backing plate, the fibrous buffing medium comprising innermost strands proximate the central opening;
a block of material, different from the fibrous buffing medium, on each side of the backing plate positioned between the innermost strands and the central opening and having an aperture therethrough in alignment with the central opening, the block of material preventing the innermost strands from entering the central opening when the drive shaft or spindle of the power buffer is inserted into the central opening wherein the innermost strands would otherwise be permitted to enter the central opening, thereby preventing the innermost strands from interfering with attachment of the buffing pad to a power buffer.

2. The buffing pad of claim 1 wherein at least one block of material is cylindrical in shape.

3. The buffing pad of claim 2 wherein said cylindrical shape has a height and a wall thickness and wherein the strands of fibrous buffing medium in the vicinity of said block have a length that is not greater than the combined height and wall thickness of said block.

4. The buffing pad of claim 1 wherein said fibrous buffing medium is wool.

5. The buffing pad of claim 1 wherein at least one block of material is comprised of foam.

Assignees

• Krause Aaron C
• Titovs Aleksandrs
• 3M Innovative Properties Co

Inventors

• Krause Aaron C
• Titovs Aleksandrs

Classifications

• B24D13/20

  Mountings for the wheels · CPC title

• B24D13/14 Primary

  acting by the front face · CPC title