Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2005-05-10
2005-05-10
Till, Terrence R. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S347000, C055S337000, C055S429000, C055SDIG003
Reexamination Certificate
active
06889403
ABSTRACT:
A cyclonic vacuum cleaner which suppresses the flow of dust-laden airflow to the outside of a dust collection container, even if fine or comparatively light dust particles ascend together with a vortex flow. Fine dust particles mixed in the vortex flow are captured by a filter23of a first vent hole21provided at a lower end of a base19of a vortex flow generating member18.If the filter23is clogged with such particles to some extent, yet the airflow inside a dust collection container15is allowed to pass through a second vent hole22formed on the side surface of the base19of the vortex flow generating member18into an intake hole12.As a result, a constant amount of airflow is insured. Further, owing to a skirt portion25provided around the first vent hole21,the travel of the dust particles toward the second vent hole22can be prevented even though the dust particles captured by the filter23are carried on the vortex flow toward the second vent hole22.
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Notice of Reason For Rejection; English version of Japanese Application No. 2001-013827, Dec. 22, 2003.
Inoue Mineyuki
Ogawa Toshiaki
Taniguchi Shuichi
Yamada Takeshi
Till Terrence R.
Twinbird Corporation
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