Brushing – scrubbing – and general cleaning – Machines – Brushing
Reexamination Certificate
2006-02-28
2006-02-28
Kim, John (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
Brushing
C015S050200, C015S050300, C015S098000
Reexamination Certificate
active
07003841
ABSTRACT:
The invention relates to a surface treating machine, comprising: a frame (1) and a chassis (2, 3) to enable the machine to move over a surface (S) such as a floor. A head (5) is supported by the frame and comprises means (6) for directly contacting, scrubbing or maintaining said surface. The head (5) is freely movable up and down with respect to the chassis (2, 3) and is loaded downwardly by a pressure to adapt to the level of the surface. At least a part of the pressure on the head (5) is derived from the weight of the machine itself. Preferably, the head (5) is connected to a first lever arm (8) of a two armed lever (7) A second arm (9) of the lever (7) is connected to the chassis (2, 3), whereas a pivoting point (10) of the lever (7) is fixed to the frame (1) of the machine. In this way, the pressure on the head is not only provided by the weight of the machine, but the head is also easily adapting to ramps and descents in the surfaces, while the pressure on the head is maintained.
REFERENCES:
patent: 6023813 (2000-02-01), Thatcher et al.
patent: 6163915 (2000-12-01), Kaczmarz et al.
patent: 0 189 617 (1991-10-01), None
patent: 0 910 981 (1999-04-01), None
patent: 0 935 027 (1999-08-01), None
patent: 97/08984 (1997-03-01), None
European Search Report dated Nov. 9, 2001.
Bahta Abraham
Hamilton Neil E.
JohnsonDiversey, Inc.
Kim John
Rymarz Renee J.
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