2004-065357 is referenced by 26 patents.

PROBLEM TO BE SOLVED: To provide a vacuum cleaner having a convenience in use capable of informing that it has quite a well convenience in use and the amount of dust collection at a dust collecting unit is more than a specified value.SOLUTION: This vacuum cleaner comprises an electric blower 1 for producing suction air; an electric current sensing means 13 for detecting a current value of the electric blower 1; a dust collecting unit 7 for collecting dust; a memory means 16 judging that an amount of collected dust in the dust collecting unit 7 is more than a predetermined value in reference to the detected current value; and a display means 14 for displaying judgment information stored in the memory means 16. When it is judged that the amount of collected dust in the dust collecting unit 7 is more than a predetermined value, information that the amount of collected dust in the dust collecting unit 7 is more than a predetermined value is displayed at the display means 14 even after the electric blower 1 is stopped in its operation.

Title
Vacuum cleaner
Application Number
2002-225795
Publication Number
2004-065357
Application Date
August 2, 2002
Publication Date
March 4, 2004
Inventor
Takahashi Masaki
Maeda Hiromi
Assignee
Matsushita Electric
IPC
A47L 09/28