Intrinsically safe case for a tablet computer

An apparatus comprising:

• a tablet computer have a screen and an outer periphery;
• an upper shell having an open area, said screen being exposed through said open area, said upper shell being sealed against said periphery of said tablet computer;
• and
• a lower shell being connected in sealed relation to said upper shell, said upper shell and said lower shell containing said tablet computer therein, at least one of said upper shell and said lower shell having a valve affixed thereto, said valve suitable for allowing a gas to be introduced under pressure into an interior of said upper shell and said lower shell.

An apparatus comprising:

• a tablet computer have a screen and an outer periphery;
• an upper shell having an open area, said screen being exposed through said open area, said upper shell being sealed against said periphery of said tablet computer;
• and
• a lower shell being connected in sealed relation to said upper shell, said upper shell and said lower shell containing said tablet computer therein;
• and
• a subframe interposed in sealed relation between said upper shell and said lower shell, said upper shell and said lower shell and said subframe being in fluid-tight sealed relationship.