Vacuum cleaner with optical sensor
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United States of America Patent
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Oct 13, 1998
Grant Date -
N/A
app pub date -
Feb 25, 1997
filing date -
Feb 25, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum cleaner comprises a dust sensor having a light emitting device and a light receiving device which devices are provided at predetermined positions of a suction nozzle or a suction pipe in a condition that both devices are opposite to one another in a direction which crosses a dust suction direction by a predetermined angle. A spacer member is positioned at a predetermined accurately position the suction nozzle or the suction pipe by an engagement of with respect to a second projection member and a second concave section, and each device is positioned accurately relative to the spacer member by an engagement of a first concave section and a first projection member.
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