Title:
VACUUM CLEANER
Document Type and Number:
Japanese Patent JPH0739499
Kind Code:
A
Abstract:
PURPOSE: To indicate the presence of dust without malfunction in the dust detection even when a nozzle for gap or the like is used.
CONSTITUTION: A photoelectric detecting sensor consisting of a luminescent element 7 and light receiving element 8 for detecting dust is provided on a operating handle 1 in which a display element 13 for displaying the presence of dust, an electric circuit 10 for receiving a signal from the photoelectric detecting sensor to control the display element 13 and a battery providing a power source for the luminescent element 7, light receiving element 8 and electronic circuit 10 are disposed to detect dust.
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Inventors:
HAYAKAWA HIROSHI
Application Number:
JP19213693A
Publication Date:
February 10, 1995
Filing Date:
August 03, 1993
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
A47L9/19; A47L9/28; (IPC1-7): A47L9/19; A47L9/28
Attorney, Agent or Firm:
Shuji Matsumura (2 outside)
Next Patent: ポリプロピレン系樹脂予備発泡粒子