Carpet cleaning wand having uniform air flow distribution
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United States of America Patent
Stats
-
Nov 20, 2012
Grant Date -
Dec 31, 2009
app pub date -
Jun 27, 2008
filing date -
Jun 27, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A novel suction head for a carpet cleaning wand wherein either or both of two designs are utilized. Each design utilizes a generally fan shaped internal suction channel that fairs smoothly between an exhaust channel of substantially round cross section and lips of an intake opening having a much wider and substantially rectangular cross section. The internal suction channel utilized by one design is formed with a cross section that is non-uniform when viewed along the direction of air flow through the wand, which is a dramatic contrast to the uniform cross sections of known current designs. Another design utilizes an internal airfoil interrupting the internal suction channel along its centerline for diverting the air flow more towards the outside edges of the internal suction channel.
First Claim
Family
International Classification(s)
Cited Art Landscape
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