Abrading – Tool support for flexible-member tool – Including endless band tool holding member
Reexamination Certificate
2002-04-10
2004-06-29
Nguyen, Dung Van (Department: 3723)
Abrading
Tool support for flexible-member tool
Including endless band tool holding member
C451S495000, C451S523000
Reexamination Certificate
active
06755727
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention broadly relates to sanding blocks.
2. Prior Art
Sanding blocks are devices for providing a rigid supporting surface for sandpaper. A typical sanding block comprises a shallow U-shaped member. A piece of sandpaper is positioned under the block and wrapped around to the top of the block and into a recessed part of the “U”. A clamping member is secured in the recessed part to clamp the ends of the sandpaper in position. The disadvantage with such a sanding block is that the user must purchase large sheets of sandpaper and cut them into the proper size and shape to fit the sanding block. Also, typical sheets of sandpaper are relatively thin and easily torn during use.
BRIEF SUMMARY OF THE INVENTION
The present sanding block includes a base member with a flat working surface for being positioned against a generally flattened sanding belt. A tightening arm has a first end hinged to a first end of the base member, and a second end movable between an open position away from a second end of the base member, and a closed position latched against the second end of the base member. A first retaining bar is secured to the tightening arm for engaging a first end of the sanding belt, and a second retaining bar is secured to the base member for engaging a second end of the sanding belt. When the tightening arm is opened, the first retaining bar is moved for slackening the sanding belt, and when the tightening arm is closed, the first retaining bar is moved for tightening the sanding belt against the working surface.
REFERENCES:
patent: 1858899 (1932-05-01), Montbriand
patent: 1947054 (1934-02-01), McReynolds
patent: 2252190 (1941-08-01), McAdams
patent: 4478011 (1984-10-01), Russell
patent: 6196909 (2001-03-01), Cadrobbi
patent: 6494770 (2002-12-01), Carlson
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