Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2007-08-10
2009-12-29
Redding, David A (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S340400, C015S348000, C015S372000, C015S384000
Reexamination Certificate
active
07636982
ABSTRACT:
An autonomous floor-cleaning robot comprising a housing infrastructure including a chassis, a power subsystem; for providing the energy to power the autonomous floor-cleaning robot, a motive subsystem operative to propel the autonomous floor-cleaning robot for cleaning operations, a command and control subsystem operative to control the autonomous floor-cleaning robot to effect cleaning operations, and a self-adjusting cleaning head subsystem that includes a deck mounted in pivotal combination with the chassis, a brush assembly mounted in combination with the deck and powered by the motive subsystem to sweep up particulates during cleaning operations, a vacuum assembly disposed in combination with the deck and powered by the motive subsystem to ingest particulates during cleaning operations, and a deck adjusting subassembly mounted in combination with the motive subsystem for the brush assembly, the deck, and the chassis that is automatically operative in response to an increase in brush torque in said brush assembly to pivot the deck with respect to said chassis. The autonomous floor-cleaning robot also includes a side brush assembly mounted in combination with the chassis and powered by the motive subsystem to entrain particulates outside the periphery of the housing infrastructure and to direct such particulates towards 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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