Edge protection device for hole saw
AssigneeKapman AB
InventorSture Alm
Life of this patent
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Abstract
A circular hole saw blade is provided with a removable edge protector. The edge protector is in the form of a cylindrical loop of stiff elastic polymer material inserted coaxially into the blade alongside an inner cylindrical surface thereof. The loop has an inner axial end situated inside of the blade and an outer axial end disposed axially outwardly of the cutting teeth of the blade.
Claims17
An edge protector for a hole saw blade, where the hole saw blade comprises a cylindrical toothed part attached to a circular plate characterized by the edge protector comprising a strip of a stiff elastic polymer material which can be assembled to a loop fitting into the cylindrical toothed part, and the strip having a width exceeding the height of the cylindrical toothed part by 3 to 10 mm.
In combination, a hole saw blade and a removable edge protector therefor;
- the saw blade comprising a cylindrical part defining a center axis and first and second axial ends, cutting teeth formed on the first axial end, and a circular plate attached to the second axial end;
- the edge protector comprising a cylindrical loop of stiff elastic polymer material disposed coaxially within the cylindrical part and disposed alongside an inner cylindrical surface of the cylindrical part, the loop having an inner axial end disposed within the hole saw blade and an outer axial end disposed axially outwardly of the cutting teeth.
Dependencies are inferred from the claim text.