Sweeper attachment for lift trucks

Claim 1

A SWEEPER ATTACHMENT FOR A LIFT TRUCK COMPRISING: MEANS DEFINING A HOUSING HAVING AN OPEN BOTTOM, BIN MEANS PARTIALLY CLOSING SAID BOTTOM, STEERABLE GROUND WHEEL MEANS SUPPORTING ONE END OF SAID HOUSING, GROUND-ENGAGING DRIVE WHEEL MEANS SUPPORTING THE OPPOSITE END OF SAID HOUSING, ROTATABLE BRUSH MEANS MOUNTED WITHIN AND EXTENDING BETWEEN THE OPPOSITE SIDES OF SAID HOUSING ADJACENT SAID BIN IN A POSITION SO THAT SAID BRUSH MEANS CAN ENGAGE THE GROUND SURFACE, TRANSMISSION MEANS INTERCONNECTING SAID DRIVE WHEEL MEANS AND SAID BRUSH MEANS FOR ROTATING SAID BRUSH MEANS IN A DIRECTION FOR SWEEPING DIRT FROM SAID GROUND SURFACE INTO SAID BIN UPON MOVEMENT OF SAID HOUSING IN A PREDETERMINED DIRECTION, AND STEERABLE CONNECTING AND SUSPENSION MEANS ON SAID HOUSING FOR CONNECTING SAID HOUSING TO THE LOAD CARRIAGE OF SAID LIFT TRUCK, SAID CONNECTING AND SUSPENSION MEANS INCLUDING MEANS FOR TRANSMITTING PUSHING AND PULLING FORCES FROM SAID LIFT TRUCK TO SAID HOUSING BUT PERMITTING INDEPENDENT RELATIVE VERTICAL MOVEMENT BETWEEN SAID LIFT TRUCK AND SAID HOUSING SO THAT THE BRUSH MEANS WILL REMAIN IN SWEEPING ENGAGEMENT WITH THE GROUND SURFACE WHEN SAID SWEEPER IS MOVED OVER UNEVEN SURFACES.