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US 6,280,309 B1Granted
Accessories and attachments for angle grinder
AssigneeNorton Company
InventorAnthony Alfred Van Osenbruggen
Life of this patent
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AssigneeNorton Company
InventorAnthony Alfred Van Osenbruggen
Estimating the term…
Accessories for an angle grinder include a tool comprising a rotary disk having releasably attached to its surface, an annular attachment having a cutting or abrading, (“shaping”), surface, and rest means in a rest zone for supporting the grinder on a surface to be shaped. The rest means may be a non-rotating nose beneath the grinder; a rubbing contact mounted on a flat tool or simply part of the surface of a convex tool. Tilting the grinder about the rest means gives effective control of the tool. Steeper tilts cause the cutting or abrading surface to bite more deeply into the surface to be shaped. The grinder is preferably stroked toward the user with the cutting or abrading zone trailing. Most disks are perforated. Work to be shaped can be seen through the spinning disk during use. The annular attachment can have a variety of cutting or abrading surfaces.
An accessory for a grinder comprising a rotatable disk-shaped tool having a working zone (207) located around the outer perimeter of the disk, characterized in that the accessory further comprises a rest means (101, 2101, 2500) and an annular attachment (1804, 2503) coaxial with the disk and having a shaping surface, said attachment being releasably attached to the tool in the working zone thereof.
An annular disk (2503, 2601) characterized in that the disk is provided with a working surface (2602) and an attachment surface (2603) in which the working surface is provided with shaping means and the attachment surface is provided with means for reversible attachment of the annular disk to the peripheral portion of a rotatable disk substrate.
An annular disc provided with a working surface and an attachment surface in which the working surface is provided with from 3 to 24 shaping means selected from the group consisting of teeth, hardened stubby projections, abrasive grits bonded to the working surface and wire bristles at spaced intervals around the working surface, said shaping means being separated by rubbing surfaces and the attachment surface is provided with means for reversible attachment of the annular disc to the peripheral portion of a rotatable disk substrate.
An annular disc provided with a working surface and an attachment surface in which the working surface is provided with shaping means comprising teeth in groups of from one to three and located at spaced intervals around the working surface and the attachment surface is provided with means for reversible attachment of the annular disc to the peripheral portion of a rotatable disk substrate.
An annular disc provided with a working surface and an attachment surface and the attachment surface is provided with means for reversible attachment of the annular disc to the peripheral portion of a rotatable disk substrate in which the reversible attachment means are physical structures adapted to cooperate with interlocking structures on a substrate to secure reversible attachment.
Dependencies are inferred from the claim text.