Core for washing sponge roller
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United States of America Patent
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Feb 25, 2014
Grant Date -
Jul 19, 2007
app pub date -
Dec 26, 2003
filing date -
Dec 26, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A core for a cleaning sponge roller and a cleaning sponge roller set include a core and a cleaning sponge roller mounted on the core. The core for the cleaning sponge roller is in a substantially cylindrical shape including a bore extending in an axial direction and a plurality of small holes communicating between the bore and a circumferential outer surface of the core. The diameter of the bore is 10 mm or more. The diameter of the small holes is 2.5 mm or more. A total of cross-sectional areas of openings of all the small holes is larger than a cross-sectional area of the bore.
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