(57) Vacuum cleaner apparatus of versatile type, particularly but not exclusively for
industrial uses, for cleaning surfaces of various kind and hardness, Apparatus the
brush bottom (12) of which is shaped for housing and supporting movable support means
(13) and at least a regulation mechanism (14), which may be actuated by selector means
(18), wherein the movable support (13) is provided with sliding pads (36, 37, 39)
made of felt, which may be actuated by the regulation mechanism (14), through the
selector (18), from a first to a second operative position thereof, and vice versa,
wherein in the first operative position the movable support (13) is raised into said
brush bottom (12), and also said sliding pads (36, 37, 39) are raised with respect
to the surface to be cleaned, and the wheels (22, 26) of the brush bottom are lowered
into contact with the surface to be cleaned, under the condition in which the apparatus
may clean floors or floor coverings made of hard and strong materials, and wherein
in the second operative position the movable support (13) is lowered into said brush
bottom (12), and also said sliding pads (36, 37, 39) are lowered into contact with
the surface to be cleaned, and the wheels (22, 26) are raised with respect to the
surface to be cleaned and polished, under the condition in which the apparatus may
clean and polish floors or floor coverings made of delicate and/or tender and/or soft
materials, which involve delicate cleaning treatments.
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