Portable screen assembly
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United States of America Patent
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-
Oct 2, 2001
Grant Date -
N/A
app pub date -
Aug 20, 1999
filing date -
Aug 20, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A portable screen assembly includes a spring-biased roll rotatably mounted to a lower casing, and a screen rotatably mounted at one end thereof to a top bar. The screen is set to a desired height by adjusting a repulsive force for a descent of the screen, and an upward biasing force of a height retaining device engaged with an expansion device against gravity and an elastic force of a spring attached to the spring-biased roll.
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