Self-evacuating vacuum cleaner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jul 13, 1999
Issued Date -
N/A
app pub date -
Feb 11, 1997
filing date -
Jul 12, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vacuum cleaner has an electric motor driving an air impeller for creating suction and a pump which draws liquid material through an inlet tube from the bottom of the tank and expels it from the tank. A priming apparatus is disposed in the tank chamber in fluid communication with the pump and a valve is selectively actuable to establish a pressure differential across liquid in the priming apparatus to thereby prime the pump.
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Family
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Cited Art Landscape
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