Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2007-07-24
2007-07-24
Snider, Theresa T. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C359S403000
Reexamination Certificate
active
10748810
ABSTRACT:
A self-moving vacuum cleaner includes a duct disposed in a casing and having a vacuum inlet which extends downwardly of a bottom wall of the casing, and an impeller disposed to draw dust from the floor surface through the vacuum inlet into the duct. An intake nozzle includes a tubular nozzle body which has an upper end communicated with and retainingly slidable relative to the vacuum inlet so as to enable a lower end of the nozzle body to be movable between upper and lower positions, and an anchoring member which is hinged to the bottom wall such that the nozzle body is swingable between the upper and lower positions in response to unevenness of the floor surface, thereby enabling the lower end to keep trailing on the floor surface when the casing moves.
REFERENCES:
patent: 5781960 (1998-07-01), Kilstrom et al.
patent: 6481515 (2002-11-01), Kirkpatrick et al.
patent: 6581239 (2003-06-01), Dyson et al.
patent: 6591447 (2003-07-01), Wegelin et al.
patent: 6601265 (2003-08-01), Burlington
patent: 6938298 (2005-09-01), Aasen
patent: 2004/0031113 (2004-02-01), Wosewick et al.
patent: 2004/0031121 (2004-02-01), Martin et al.
Bacon & Thomas PLLC
Snider Theresa T.
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