Apparatus spreading fluid on floor while moving

A spreading apparatus which spreads a fluid on a surface, comprising:

• a working unit including at least two working members having first and second ends which are rotated around axes perpendicular to the surface so as to spread the fluid on the surface, one of the working members being rotated with a first phase, and the other being rotated with a second phase different from the first phase;
• wherein a length of each working member is shortened on one side of the rotational axis so that the first end of each working member is positioned closer to a rotational center of each working member than the second end of each working member;
• and
• a supplier having an outlet through which the fluid is applied to the surface, said outlet being located over a path of the second end, but not over a path of the first end.