Carpet cleaning machine with edge-mounted vacuum nozzle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 7, 1992
Grant Date -
N/A
app pub date -
Oct 31, 1990
filing date -
Oct 31, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved carpet cleaning machine includes front and rear counter-revolving brushes for stroking substantially-dry carpet cleaning granules into and across the carpet fibers. A shroud is mounted adjacent the brushes and has a front portion and a rear portion, each of which is spaced from its adjacent brush to define a granule passage through which granules cast by the counter-revolving brushes are re-deposited on the carpet. Each such portion also has an edge spaced above the carpet to define a granule exit opening between the edge and the carpet. Front and rear vacuum nozzles each have an inlet for receiving granules to be removed from the carpet. Each nozzle inlet is substantially positionable at a granule exit opening to substantially block such exit opening. When the passages and exit opening are unobstructed, the machine is used to stroke granules across carpet fibers and re-distribute granules for further cleaning of the carpet. With the nozzle inlets repositioned to block the exit openings following completion of carpet cleaning, the granules are removed by vacuuming.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully