Scraper Blade and Method of Manufacturing the Same
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United States of America Patent
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Issued Date -
Sep 3, 2009
app pub date -
Oct 9, 2006
filing date -
Oct 7, 2005
priority date (Note) -
Abandoned
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Abstract
A scraper blade adapted to scrape off material from a surface has a scraper tip at one end and a mounting base at its other end and is tapered towards the tip at least in the outer end of the scraper blade, its scraper blade portion which extends from the tip and to a point adjacent to or in the mounting base being made with at least two layers, which extend longitudinally along said scraper blade portion, and is characterised in that at least one first layer is made of polyurethane with a lower hardness and a higher abrasion resistance than at least one second layer which is mainly made of polycarbonate plastic, said at least one second polycarbonate plastic layer being adapted to reinforce and stiffen said at least one first layer, which constitutes a main contact surface against said surface.
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