07636982 is referenced by 177 patents and cites 241 patents.

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.

Title
Autonomous floor cleaning robot
Application Number
11/834656
Publication Number
7636982 (B2)
Application Date
August 10, 2007
Publication Date
December 29, 2009
Inventor
Paul E Sandin
Randolph
MA, US
David M Nugent
Newport
RI, US
Newton E Mack
Somerville
MA, US
Joseph L Jones
Acton
MA, US
Agent
Fish & Richardson P C
Assignee
iRobot Corporation
MA, US
IPC
A47L 9/28
View Original Source