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US 5,778,476 AGranted
Interdental brushes having roughened, tapered and rounded bristle ends and method of making the same
AssigneeJohn O. Butler Company
InventorsDominic Squillaci, Scott Koepsel, John Shimkus, Kiyoshi Maekawa
Life of this patent
Estimating the term…
Abstract
An interdental twisted wire brush having roughened, tapered and rounded bristle ends prepared by rotating the interdental brush both transversely to the axis of the brush and axially along its longitudinal axis, while flexing the bristles and grinding the bristle ends of the interdental brush against a flat, moving abrasive surface.
Claims10
An interdental twisted wire brush having roughened, tapered and rounded bristle ends prepared by:
- a) rotating the interdental brush transversely to the axis of the brush;
- b) rotating the interdental brush along the longitudinal axis of the brush;
- c) grinding the bristle ends of the interdental brush against a flat, moving abrasive surface;
- and
- d) flexing the bristle ends against the abrasive surface.
2 more elements
An interdental twisted wire brush having bristles with tapered, rounded and roughened bristle ends.
Dependencies are inferred from the claim text.