Portable screen assembly
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United States of America Patent
Stats
-
Jun 12, 2012
Grant Date -
Feb 3, 2011
app pub date -
Apr 24, 2009
filing date -
May 2, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A portable screen assembly that is lighter in weight and easier to handle. The assembly includes a casing, a spring-biased roll rotatably mounted to the casing, a screen bonded at one end thereof to a top bar and wound around the spring-biased roll when in storage, and an expanding and contracting device having one end rotatably mounted to a mounting member mounted to the top bar and the other end rotatably mounted to the casing. The expanding and contracting device is a half-pantograph type expanding and contracting device having a first arm, a second arm and a third arm arranged in an extended plane parallel to the extended screen. The second arm includes two or more mutually parallel sub arms provided to be mutually parallel in the extended plane. The two or more sub arms are connected to the first arm and the second arm so as to form a parallel link.
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Cited Art Landscape
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