Patent ID: 7721379

Claim:
A small-diameter resin twisted brush comprising: a plurality of resin filaments having resilience, straightenability, and suppleness; at least two resilient stem resin filament rods; said plurality of resin filaments being clamped between said at least two resilient stem resin filament rods; said at least two resilient resin stem rods being twisted about one another, thereby forming said brush with helical bristles formed by said plurality of resin filaments extending radially from said at least two twisted resilient stem resin filament rods, whereby said small-diameter resin twisted brush is capable of adapting to three-dimensional deformed conditions and of recovering an initial shape; and at least one thermally fusible resin filament rod parallel to said at least two resilient stem resin filament rods, whereby said at least one thermally fusible resin filament rod is fused during manufacture of said small-diameter resin twisted brush to firmly hold said plurality of resin filaments between said at least two twisted resilient stem resin filament rods, and to prevent said at least two twisted resilient stem resin filament rods from detwisting.