Scrubbing device and roll sponge assembly used therein

a technology of scrubbing device and roll sponge, which is applied in the direction of carpet cleaners, cleaning machines, cleaning equipment, etc., can solve the problems of high degree of smoothness, extremely difficult to maintain a high level of cleaning quality at all times, and reliably remove, so as to achieve high-efficiency scrubbing, without further complicated devices
US20080276394A1Inactive Publication Date: 2008-11-13FUJI ELECTRIC DEVICE TECH CO
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
FUJI ELECTRIC DEVICE TECH CO
Publication Date
2008-11-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

A roll sponge assembly for a scrubbing device includes a support having a support portion and a rotary shaft provided on two ends of the support portion, and a roll sponge having a hollow hole for holding the support by fitting the support portion of the support into the hollow hole. An outer diameter of the roll sponge assembly continuously or in stages increases in a lengthwise direction thereof.
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Description

BACKGROUND OF THE INVENTION AND RELATED ART STATEMENT

[0001] The present invention relates to a scrubbing device for cleaning a circular or a rectangular plate such as a magnetic disc substrate made of metal, glass or the like, a semiconductor wafer, and so on, and a roll sponge assembly used in the scrubbing device.

[0002] In recent years, magnetic disk drives have become smaller in size and expanded their range of applications, while it has been always demanded to further increase a recording density of a magnetic disc installed in the drive. A magnetic disk is manufactured by forming thin films such as a magnetic layer on a substrate made of glass or a metal such as aluminum. With regard to this type of magnetic disk, major progress has been made, in response to the demands described above, for the development of a substrate capable of reducing the distance (magnetic spacing) between a magnetic head and the magnetic disk. As disclosed in Patent Document 1: Japanese Unexamined Patent ...

Claims

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