Single cup disposable coffee brewing device

A single cup disposable coffee brewing device comprising an outer housing of a relatively stiff foldable material foldable from a first folded unopened position to a second open unfolded position and having an interior and an exterior thereby forming a holder;

• a filter secured in the interior of said housing having coffee grounds of a predetermined grind and of a predetermined measurement disposed therein, said filter being comprised of a filter paper adapted to pass water therethrough;
• an opening below said filter of a predetermined size disposed in said holder communicating the interior of Said holder with the exterior thereof;
• and
• valve means of water dissolvable material for closing off said opening and adapted to dissolve after a predetermined period of time when contacted by water of a predetermined temperature, said holder having a first generally trapezoidally shaped section joined by a fold line at its base to a like configured second generally trapezoidally shaped section, a first generally triangularly shaped section joined along one side thereof by a fold line to a first side of said first generally trapezoidally shaped section, said first generally triangularly shaped section being joined by a fold line to a first tab extending along the other side of said first generally triangularly shaped section, a second generally triangularly shaped section joined along one side thereof by a fold line to a first side of said second trapezoidally shaped section, the other side of said second generally triangularly shaped section being joined by a fold line to a second tab extending along the other side of said second generally triangularly shaped section, a third generally triangularly shaped section joined along one side thereof by a fold line to a second side of said first generally trapezoidally shaped section, said third generally triangularly shaped section being joined by a fold line to a third tab extending along the other side of said third generally triangularly shaped section, a fourth generally triangularly shaped section joined along one side thereof by a fold line to a second side of said second trapezoidally shaped section, the other side of said fourth generally triangularly shaped section being joined by a fold line to a fourth tab extending along the other side of said fourth generally triangularly shaped section, a fifth tab joined by a fold line to the base of said first trapezoidally shaped section, and a sixth tab joined by a fold line to the base of said second trapezoidally shaped section, and a first generally V-shaped cut-out through said holder along a fold line interconnecting said first tab to said second tab, and a second generally V-shaped cut-out through said holder along a fold line interconnecting third tab to said fourth tab .