US Patent 11858117 Dual-purpose mechanics creeper

A dual-purpose mechanics creeper includes: a flat board, a first swing arm and a second swing arm pivotally attached to a bottom surface of the flat board. Each swing arm includes a plurality of rollers. When each swing arm is at the first position, it is adjacent to the bottom surface of the flat board. When the swing arm is at the second position, it is perpendicular to the flat board. When the second swing arm is at the second position, it is attached to the first swing arm, such that the second swing arm is obliquely supported between the flat board and the first swing arm.