Central vacuum cleaner and its central unit

Details Central vacuum cleaner and its central unit Central vacuum cleaner and its central unit

2003-09-01

2008-12-16

Wilson, Lee D (Department: 3723)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S327600, C015S315000

Reexamination Certificate

active

07464436

ABSTRACT:
A central vacuum cleaner including a central unit provided with a suction joint and an exhaust joint as well as a suction hose. According to the invention, the central vacuum cleaner includes an operating unit (1) having adaptors for attaching the central unit (2) to the operating unit, an exhaust junction (3) for connecting the exhaust joint of the central unit to the operating unit, a filter (4) for filtering the air flow from the exhaust joint and exhaust junction, as well as an outlet port (5) for directing the air flow that travelled through the filter into the air space surrounding the operating unit.

REFERENCES:
patent: 5274878 (1994-01-01), Radabaugh et al.
patent: 5296908 (1994-03-01), Hatano et al.
patent: 6182327 (2001-02-01), Gosselin
patent: 7080425 (2006-07-01), Smith et al.
patent: 2005/0241099 (2005-11-01), Malinen
patent: 842038 (1984-05-01), None
patent: 893732 (1991-02-01), None
patent: 9003125-3 (2001-10-01), None
patent: WO98/32363 (1998-07-01), None

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