Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2007-08-14
2011-12-20
Redding, David (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S327200, C015S339000, C015SDIG010, C015S340100
Reexamination Certificate
active
08079113
ABSTRACT:
The present invention discloses a vacuum cleaner including a main body (1) of the vacuum cleaner, a wheel (2) rotatably mounted at the body, a driving unit for driving the wheel (2), a sensor (71) positioned at the main body, for sensing an inclined direction of the main body (1), and a control unit for controlling the driving unit according to the inclined direction of the main body (1) sensed by the sensor (71). In this configuration, the posture of the main body (1) of the vacuum cleaner can be controlled according to the inverted pendulum control theory. Therefore, the main body (1) of the vacuum cleaner can maintain the posture thereof not to fall down.
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Cho Seong-Koo
Choi Kyu-Chun
Chong Chung-Ook
Hwang Geun-Bae
Hyun Kie-Tak
Birch & Stewart Kolasch & Birch, LLP
LG Electronics Inc.
Redding David
LandOfFree
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