Submersible tablet for underwater or extreme environment
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United States of America Patent
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-
Jun 4, 2013
Grant Date -
Jul 14, 2011
app pub date -
Jan 24, 2011
filing date -
May 15, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A tablet that is suitable for use underwater or in any extreme environment is provided. The tablet is designed, through the use of buoyant materials such as polystyrene, to have a slightly negative buoyancy at a depth of about fifty feet so that it can be very easy to manipulate underwater and will not sink or ascend rapidly if let go. A length of waterproof (plastic) vellum is stretched between two rollers to form a drawing or writing surface thereby enabling the user to easily record information on the vellum.
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Family
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Cited Art Landscape
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