Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2004-04-05
2009-08-11
Redding, David A (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S340400
Reexamination Certificate
active
07571511
ABSTRACT:
An autonomous floor-cleaning robot comprises a self-adjusting cleaning head subsystem that includes a dual-stage brush assembly having counter-rotating, asymmetric brushes and an adjacent, but independent, vacuum assembly such that the cleaning capability and efficiency of the self-adjustable cleaning head subsystem is optimized while concomitantly minimizing the power requirements thereof. The autonomous floor-cleaning robot further includes a side brush assembly for directing particulates outside the envelope of the robot into the self-adjusting cleaning head subsystem.
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Jones Joseph L.
Mack Newton E.
Nugent David M.
Sandin Paul E.
Fish & Richardson P.C.
iRobot Corporation
Redding David A
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