Scouring ball
AssigneeMinnesota Mining and Manufacturing Company
InventorsRaymond F. Heyer, Gary J. Klecker
Life of this patent
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Abstract
A scouring pad in the shape of a ball comprises a plurality of radially slit, regular-shaped, planar segments of conformable, lofty, low-density nonwoven abrasive product fastened together under compression at their centers with fastening means. The segments are slit from the outer edge toward the center to provide radially disposed, equally spaced slits which define radially aligned lobes, the total array of which defines the ball shape.
Claims7
A scouring pad substantially in the shape of a highly conformable ball comprising a plurality of radially slit, regular-shaped, planar segments of conformable, lofty, low-density, nonwoven abrasive product fastened together under compression at their centers with fastening means, wherein the stack of segments have in the uncompressed state a thickeness to average diameter ratio in the range of about 1:1 to about 1:3, each of said segments being slit along a line from the outer edge toward its center in the average range of about 10% to 80% of the distance of said line to provide from about 5 to about 12 radially disposed equally spaced slits which define a plurality of radially aligned lobes having a width at least 3/16 inch at the narrowest point, with lobes in the same segment being capable of being alternatively at least temporarily positioned above and below the plane of such segment, whereby the total array of lobes in said pad defines said ball shape.
Dependencies are inferred from the claim text.