Patent ID: 6151748
Filing Date: 2000-11-28
Classification: A47L

Abstract:
A surface cleaning apparatus comprising:a) supply means for means for supplying pressurized cleaning fluid;b) a chassis adapted to move over the surface;c) plural arms, each of said arms:i) rotatably supported relative to said chassis on an arm axis, and extending radially from said arm axis, said arm axis substantially perpendicular to the surface,ii) having proximal and distal ends, andiii) comprising a fluid channel for transferring fluid from said proximal end longitudinally along said arm;d) fluid coupling means for transferring cleaning fluid from said supply means to said arms' fluid channels;e) at least one head attached to each of said arms, each of said heads:i) rotatably supported relative to said arm on an independent head axis,ii) comprising at least one fluid nozzle for emitting cleaning fluid onto the surface, said nozzle directed toward the surface at an inclined angle to the surface, andiii) comprising fluid transfer means connected to said nozzle and to said arm's fluid channel; andf) mechanical drive means:i) comprising a motor drive supported by said chassis,ii) operatively connecting said motor drive to said arms whereby said arms are driven rotationally about said arm axis,iii) operatively connecting said motor drive to each of said heads whereby said head is driven rotationally about its head axis.