Claims
- 1. An abrasive pad for smooth transition during abrading of hard uneven surfaces which are substantially unyielding or the like used in combination with a floor sander including a mechanism for applying sanding motion to a floor and an attachment for attaching the abrasive pad to the mechanism said abrasive pad comprising:
- a first abrasive body portion having an outer peripheral edge; and
- a second substantially flexible outer rim portion extending axially outwardly along a plane defined by the first abrasive body portion and from said outer peripheral edge attached to the body portion for supporting the body portion from initially contacting an uneven work surface which the rim portion comes into contact with, said second portion for flexing in response to encountering an uneven surface prior to said outer peripheral edge reaching the uneven surface for guiding of said outer peripheral edge and said abrasive body portion over the uneven surface without allowing separation of said rim portion from said outer peripheral edge which could cause gouging of the uneven surface thereby providing a smooth transition thereover.
- 2. The rotary abrasive pad of claim 1 wherein said first abrasive body portion is circular.
- 3. The rotary abrasive pad of claim 2 wherein said second outer rim portion is a substantially non-abrasive concentric ring of a polymer material.
- 4. The rotary abrasive pad of claim 1 wherein the first abrasive body portion is made of a first material and the rim portion is made of a second material.
- 5. The rotary abrasive pad of claim 4 wherein said first material is a metal material with at least a mono-layer of abrasive grit attached thereto and said second material is a polymer material.
- 6. The rotary abrasive pad of claim 5 wherein said first abrasive body portion is embedded in the polymer material.
- 7. The rotary abrasive pad of claim 6 wherein said polymer material is a polypropylene.
- 8. The rotary abrasive pad of claim 1 wherein said means for attachment is the hook or loop side of a hook and loop fastener.
- 9. An abrasive pad for smooth transition during abrading of uneven surfaces which are substantially unyielding used in combination with a floor sander including a mechanism for applying sanding motion to a floor and an attachment for attaching the abrasive pad to the mechanism said abrasive pad comprising:
- a first abrasive sheet body portion including at least a monolayer of diamond hardness abrasive material brazedly attached to a metal surface thereof for forming a substantially co-planar abrasive surface having an outer peripheral edge, said body portion being imbedded in a backing substrate for forming an integral assembly, said backing substrate having portions thereof defining a second substantially flexible outer rim portion extending axially outwardly along a plane defined by the first abrasive body portion and from said outer peripheral edge with a surface thereof which is continuous from and co-planar with said abrasive surface, said second portion for deflection outside of the plane of said body portion in response to encountering an uneven surface prior to said outer peripheral edge reaching the uneven surface for guiding of said outer peripheral edge and said abrasive body portion over the uneven surface thereby providing a smooth transition thereover, said pad being able to withstand the forces of a rotary floor sander or the like without said portions defining said second substantially flexible outer rim portion separating from said first abrasive body portion.
- 10. An abrasive pad for smooth transition during abrading of hard uneven surfaces which are substantially unyielding or the like used in combination with a floor sander including a mechanism for applying sanding motion to a floor and an attachment for attaching the abrasive pad to the mechanism said abrasive pad comprising:
- a first abrasive body portion having an outer peripheral edge; and
- a second substantially flexible outer rim portion extending axially outwardly along a plane defined by the first abrasive body portion and from said outer peripheral edge, said second substantially flexible outer rim portion being integrally attached to the body portion and inseparable therefrom for supporting the body portion from initially contacting an uneven work surface which the rim portion comes into contact with, said second portion for deflecting in a direction outside the plane of the abrasive body portion thereby forming an angled guide surface in response to encountering an uneven surface prior to said outer peripheral edge reaching the uneven surface for guiding of said outer peripheral edge and said abrasive body portion over the uneven surface without allowing separation of said rim portion from said outer peripheral edge which could cause gouging of the uneven surface thereby providing a smooth transition thereover.
- 11. A rotary abrasive pad for smooth transition during abrading of stone floor surfaces having uneven unyielding edges or the like used in combination with a floor sander including a mechanism for applying sanding motion to a floor and an attachment for attaching the abrasive pad to the mechanism said abrasive pad comprising:
- a first abrasive body portion having an outer peripheral edge; and
- a second substantially flexible outer rim portion extending axially outwardly along a plane defined by the first abrasive body portion and from said outer peripheral edge, said second substantially flexible outer rim portion being integrally attached to the body portion and inseparable therefrom for supporting the body portion from initially contacting an uneven work surface which the rim portion comes into contact with, said second portion for deflecting in a direction outside the plane of the abrasive body portion thereby forming an angled guide surface in response to encountering an uneven surface prior to said outer peripheral edge reaching the uneven surface for guiding of said outer peripheral edge and said abrasive body portion over the uneven surface without allowing separation of said rim portion from said outer peripheral edge which could cause gouging of the uneven surface thereby providing a smooth transition thereover; and
- a velcro means for attachment of said pad to a rotary tool.
- 12. A rotary abrasive pad for smooth transition during abrading of stone floor surfaces having uneven unyielding edge surfaces or the like used in combination with a floor sander including a mechanism for applying sanding motion to a floor and an attachment for attaching the abrasive pad to the mechanism said abrasive pad comprising:
- a first abrasive body portion having an outer peripheral edge;
- a means integrally attached and extending axially outwardly along a plane defined by the first abrasive body portion and from said outer peripheral edge for flexing in a direction outside of the plane of the abrasive body in response to contact with an edge surface of a workpiece thereby forming an angled guide surface in response to encountering said edge surface prior to said outer peripheral edge of said first abrasive body portion reaching said edge surface for guiding of said outer peripheral edge and said abrasive body portion over said edge surface without allowing separation of said abrasive body and thus contact of said edge of said workpiece with said outer peripheral edge which could cause gouging of the edge surface of a workpiece for providing a smooth transition thereover; and
- a velcro means for attachment of said pad to a rotary tool.
Parent Case Info
This is a continuation of U.S. patent application Ser. No. 259,940, filed Jun. 15, 1994 now abandoned, which is a continuation of application Ser. No. 871,569, filed Apr. 20, 1992, now abandoned, which is a continuation of application Ser. No. 502,056, filed Mar. 30, 1990 now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (4)
Number |
Date |
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2929479 |
Feb 1981 |
DEX |
3342480 |
Jun 1985 |
DEX |
52-32480 |
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JPX |
1243288 |
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GBX |
Continuations (3)
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Number |
Date |
Country |
Parent |
259940 |
Jun 1994 |
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Parent |
871569 |
Apr 1992 |
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Parent |
502056 |
Mar 1990 |
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