Self-evacuating vacuum cleaner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 19, 2002
Grant Date -
N/A
app pub date -
Jun 7, 2000
filing date -
Jun 7, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vacuum cleaner has an electric motor driving an air impeller for creating a low pressure and a pump which draws liquid material through an inlet tube from the bottom of a tank and expels it from the tank. A priming apparatus is provided for priming the pump impeller. An outlet of the pump is connected to a discharge outlet carried by an upper vacuum assembly. Outlet piping connects the pump outlet to the discharge outlet. A pinch valve selectively closes the outlet piping to allow the priming apparatus to prime the pump. The pump and outlet piping are preferably carried by the upper vacuum assembly to facilitate conversion of the vacuum cleaner between wet and dry pick-up.
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