Obstacle sensing system for an autonomous cleaning apparatus

  • US 7,647,144 B2
  • Filed: 02/25/2002
  • Issued: 01/12/2010
  • Est. Priority Date: 02/28/2001
  • Status: Active Grant
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First Claim
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1. A carrier, including motive means, for traversing a surface, the carrier having a front section and a rear section arranged movably in relation to each other, means for normally supporting the front and rear sections in a neutral relationship in which the front and rear sections are in initial relative positions spaced away from each other but allowing for their movement in relation to one another when the front section comes into physical contact with an obstacle, control means for controlling the operation of the carrier and actuating means for activating the control means when the front and rear sections move in relation to one another.

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