iRobot, the maker of the Roomba robot vacuum cleaner, filed for Chapter 11 bankruptcy protection this week after years of mounting financial struggles and a failed $1.4 billion acquisition deal with Amazon.The 35-year-old company once reigned supreme in the world of robotic vacuums, but its dominance waned amid rising competition from lower-cost rivals and weakening consumer demand. Here's a look back at how this once mighty, pioneering robotics company arrived at this moment. iRobot was founded by MIT ...