Electricity: motive power systems – Positional servo systems – Vehicular guidance systems with single axis control
Reexamination Certificate
2007-10-30
2007-10-30
Ip, Paul (Department: 2837)
Electricity: motive power systems
Positional servo systems
Vehicular guidance systems with single axis control
C318S568120, C701S023000, C701S028000, C015S319000
Reexamination Certificate
active
11533294
ABSTRACT:
A piezoelectric debris sensor and associated signal processor responsive to debris strikes enable an autonomous or non-autonomous cleaning device to detect the presence of debris and in response, to select a behavioral mode, operational condition or pattern of movement, such as spot coverage or the like. Multiple sensor channels (e.g., left and right) can be used to enable the detection or generation of differential left/right debris signals and thereby, enable an autonomous device to steer in the direction of debris.
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Cohen David A.
Landry Gregg W.
Ozick Daniel
Ip Paul
iRobot Corporation
Jacobs David
Jacobs & Kim LLP
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