Patent ID: 6227957
Filing Date: 2001-05-08
Classification: A47L

Abstract:
Apparatus for treating a surface comprising, in combination: a chassis adapted to be moved along the surface; means mounted to the chassis for treating the surface as the chassis is moved along the surface; a plurality of batteries for providing power to the surface treating means; a battery box for holding the plurality of batteries and including a bottom; and means for removably mounting the battery box in the chassis allowing the battery box to be removed from and inserted into the chassis in a horizontal movement direction comprising, in combination: first and second slides secured to the battery box, and first and second flanges secured to the chassis for receipt of the first and second slides of the battery box; wherein the first and second flanges extend upwardly and inwardly at an acute angle; and wherein the first and second slides include flange portions extending at an obtuse angle corresponding to and for slideable receipt in the first and second flanges resulting in a camming action between the flange portions and the first and second flanges interlocking the battery box and the chassis.