Patent ID: 6929142
Filing Date: 2005-08-16
Classification: B65D

Abstract:
1. A hatch cover for a liquid storage tank, comprising: a first base plate having a top surface and a bottom surface and defining a first recess; a second base plate having a top surface and a bottom surface and defining a second recess complementary to said first recess, said first base plate being movably connected to said second base plate such that the first base plate is movable from a folded position where the top surface of the first base plate is over the top surface of the second base plate to an unfolded position; a first door panel having an upper surface and a lower surface, said first door panel being movably connected to said first base plate and movable from a closed position over the top surface of the first base plate to an open position at an angle with respect to the top surface of the first base plate, said first door panel defining a first notch; and a second door panel having an upper surface and a lower surface, said second door panel being movably connected to said second base plate and movable from a closed position over the top surface of the second base plate to an open position at an angle with respect to the top surface of the second base plate, said second door panel defining a second notch complementary to said first notch; wherein said first door panel when in its closed position substantially covers the first recess in the first base plate, and said second door panel when in its closed position substantially covers the second recess in the second base plate, but the first and second notches define an opening for providing access into the storage tank.