Vacuum cleaner
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United States of America Patent
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Oct 26, 1993
Issued Date -
N/A
app pub date -
Feb 26, 1992
filing date -
Feb 26, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum cleaner generally has a working head which is positioned on the floor surface when the machine is in use. The working head of a vacuum cleaner essentially includes a rotating brush, a suction blower and a motor for operating both the brush and the blower. In addition, this working head also generally requires a spacing device, such as a wheel for guiding the brush head or suction brush head and controlling its proper spacing in relation to the floor.
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