US Patent 11638882 Wall-climbing vehicle and bottom cover of such vehicle

A wall-climbing vehicle having a bottom cover configured along a bottom portion. The bottom cover is disposed along the bottom portion such that a gap between the vertical wall and the bottom portion of the wall-climbing vehicle is formed. An air intake area is configured along a middle portion of the bottom cover to enable symmetrical weight balance. The air intake area is configured to accommodate a circular air intake arrangement that includes a circular configuration to create a large opening along the air intake area to increase an air suction volume along the air intake area. The wall-climbing vehicle includes a plurality of sealing cloths strips configured along sides the bottom portion to form a closed area in the wall-climbing vehicle to be continuously evacuated to form a negative pressure. Moreover, a plurality of bumps and a plurality of dots may be provided for balancing effect.