Dust collector

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction

Reexamination Certificate

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Details

C015S352000

Reexamination Certificate

active

07966691

ABSTRACT:
To provide a dust collector which, even when it is used in a poor power supply situation, can detect the dust loading of a filter accurately, can remove dust automatically and can reduce power consumption. In the dust collector, there is provided a control circuit which can detect the dust loading of a filter by comparing the threshold value of the dust loading pressure to be determined by the internal pressure of the filter, the operation of a suction device, the power supply frequency of the suction device and the supply voltage of the suction device with the filter internal pressure just before the suction device stops, and, when the filter is dust loaded, can operate a dust removing device.

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patent: 7871463 (2011-01-01), Hayama et al.
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Japanese Office Action, with English translation, issued in Japanese Patent Application No. 2006-013241, mailed Sep. 7, 2010.
Taiwanese Notification of Examination Observations, w/ English translation thereof, issued in Taiwanese Patent Application No. 096102247 dated Nov. 24, 2009.

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