Four-direction scrubbing carpet shampooer

A four-direction carpet shampooer comprising:

• a single first brush roll configured to rotate on a first axis, the first brush roll being parallel with a front edge of a shampooer head and perpendicular to a forward and backward direction of travel of the shampooer, the first brush roll extending a substantial length across the shampooer head;
• a plurality of second brush rolls configured to rotate on parallel second axes, the plurality of second brush rolls including three or more brush rolls, the parallel second axes being transverse to the first axis and parallel with the forward and backward direction of travel of the shampooer, the plurality of second brush rolls extending the substantial length across the shampooer head, each of the plurality of second brush rolls having bristles attached directly thereto around an entire circumference of each brush roll, wherein two adjacent sides of carpet fibers being in contact with the single first brush roll and the plurality of second brush rolls across the substantial length of the shampooer head during a single pass of the shampooer in the forward direction of travel, wherein two opposite adjacent sides of the carpet fibers being in contact with the single first brush roll and the plurality of second brush rolls across the substantial length of the shampooer head during a single pass of the shampooer in the backward direction of travel;
• a direction of travel sensor to detect the shampooer direction of travel;
• and
• a rotation changing actuator configured to reverse the rotation of the first brush roll on the first axis and to reverse the rotation of the plurality of second brush rolls on the parallel second axes when the direction of travel sensor indicates the forward or backward direction of travel of the shampooer has changed, the four-direction carpet shampooer thereby configured to clean two adjacent sides of carpet fibers when traveling forward and to clean the remaining two opposite sides of the carpet fibers when traveling backwards, thereby cleaning all four sides of the carpet fibers with one forward and one backward pass over the carpet fibers.