US Patent 10405723 Surface maintenance machine

A surface maintenance machine comprising a body having a forward section, a middle section and a rearward section, wherein the forward section is positioned to the front of a transverse centerline of the machine, the middle section is generally centered on the transverse centerline and a rearward section positioned to the rear of the transverse centerline. A storage chamber can be defined in the middle section and enclosed by a front wall, a rear wall, lateral walls, a generally planar top surface, and a generally planar lower surface, such that the storage chamber is generally isolated from components of the surface maintenance machine. The storage chamber can have a storage chamber bottom surface with or below a top surface of at least one battery positioned in the forward section.