Generator system for a vacuum cleaner
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United States of America Patent
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-
Nov 12, 1996
Grant Date -
N/A
app pub date -
Jul 25, 1994
filing date -
Jul 26, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum cleaner includes a controlling valve in a ventilating path to a runner of an electric generator which rotates respondingly to a suction force, a rotating angle of the controlling valve is varied corresponding to an increase of the suction force so that an increase of the air flow across the runner is suppressed, thus an increase of a voltage generated by the electric generator is suppressed.
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