Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2005-07-22
2008-09-09
Redding, David A (Department: 3723)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S412000
Reexamination Certificate
active
07421760
ABSTRACT:
A vacuum system has a cabinet that can be mounted to a wall. The cabinet includes a hose storage compartment with a hose drive assembly for automatically extending and retracting a vacuum hose. A portable vacuum unit can be removably docked to the cabinet and connected to the vacuum hose so that waste can be picked up the vacuum hose when the portable vacuum unit is docked. When undocked, the portable vacuum unit can be used alone.
REFERENCES:
patent: 3911944 (1975-10-01), Hukuba et al.
patent: 4246075 (1981-01-01), Hilbertz
patent: 5740581 (1998-04-01), Harrelson, II
patent: 7191488 (2007-03-01), Jonsson
Browne Jeffrey M.
Cline Wyatt A.
Zimmerle Johnny W.
Hartman Tara
Lafrenz Michael D.
Redding David A
Whirlpool Corporation
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