A - Human Necessities – 47 – L
Patent
A - Human Necessities
47
L
51/66, 15/90
A47L 11/10 (2006.01) A47L 11/162 (2006.01) A47L 11/40 (2006.01)
Patent
CA 1278921
INVENTOR: PETER BRUNNER INVENTION: FLOOR TREATMENT MACHINE ABSTRACT OF THE DISCLOSURE The machine housing is equipped with travel wheels and a control or manipulating handle. A floor treatment or work implement has a central throughpassage and a treatment or working surface which, in the operating position of the floor treatment machine, bears with essentially its entire treatment surface upon the floor to be treated. This floor treatment implement is rotatable by an electric motor mounted at the machine housing. A steering wheel is disposed within the space bounded by the central throughpassage and the steering axis of this steering wheel substantially coincides with the rotational axis of the floor treatment implement. The steering wheel is displaceably mounted in the direction of its steering axis and is exposed to the action of a pressure spring element which presses the steering wheel against the floor. To ensure that the floor treatment machine can be moved in random directions and that the floor treatment implement can be operated at high rotational speeds also with moderate motor power requirements, the travel wheels are lifted off the floor in the operating position of the floor treatment machine, while the steering wheel presses against the floor with a force which, except for a so-called residual weight or force, corresponds to the inherent weight of the floor treatment machine. The residual weight or force produces a specific contact pressure of the floor treatment implement upon the floor which at most amounts to about 0.25 N/cm2.
560953
Diethelm & Co. Ag
Gowling Lafleur Henderson Llp
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