Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2011-04-12
2011-04-12
Muller, Bryan R (Department: 3727)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S319000
Reexamination Certificate
active
07921509
ABSTRACT:
A suction brush for use in a vacuum cleaner and a method of adjusting the height thereof. The suction brush includes a brush casing having a suction opening to draw in air and a main air passage through which the air drawn in through the suction opening flows, a detecting unit disposed to the brush casing to detect a kind of a surface to be cleaned, a lifting unit to move a bottom surface of the brush casing close to and away from the surface to be cleaned, and a driving unit operated in response to a signal generated from the detecting unit and moving the lifting unit using air pressure generated by the air flowing through the main air passage.
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Kim Min-Ha
Oh Jang-Keun
Blank Rome LLP
Muller Bryan R
Samsung Gwangju Electronics Co. Ltd.
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