20140199119 | INTERLOCKING RIG MATS - A rig mat comprising a downwardly sloping first end comprising a female coupling and extending across a first lateral end of the rig mat and an upwardly sloping second end comprising a male coupling and extending across a second lateral end of the rig mat. Each of the downwardly sloping first end and upwardly sloping second end is in the form of a triangle comprising three angles that total one hundred eighty degrees. The downwardly sloping first end comprises a sloped flat surface and a bottom surface that is level with a bottom surface of the rig mat. The upwardly sloping second end comprises a sloped flat surface and a top surface that is level with a top surface of the rig mat. | 07-17-2014 |