Hinge assembly and corresponding road device
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United States of America Patent
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Feb 23, 2016
Grant Date -
Jan 26, 2012
app pub date -
Dec 18, 2009
filing date -
Jan 15, 2009
priority date (Note) -
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Abstract
This hinge assembly comprises a lid with a covering web and a hinge adapted for enabling an angular movement of the lid between an open position and a closed position, the hinge including a first cam and a first counter-cam, the first cam and the first counter-cam cooperating over a first angular range. The hinge comprises an additional cam and an additional counter-cam cooperating over an additional angular range. The first angular range and the additional angular range overlap over an angular overlap range that amounts to at least 60° and over the entire range of which both the first cam and counter-cam and the additional cam and counter-cam cooperate simultaneously. The device can be used for road manholes.
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