Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1989-03-10
1991-10-29
Stinson, Frankie L.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15401, 15411, 15417, 401283, A47L 528
Patent
active
050603426
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a cleaning head for use with apparatus for cleaning floors, walls or the like surfaces, more especially hard surfaces, by the application of a suitable cleaning liquid. More specifically, the invention is concerned with a cleaning head which is adapted for the distribution of such a cleaning liquid on to a hard surface and preferably also adapted for use in picking-up or collecting the soiled liquid by means of suction.
The requirements of such cleaning heads for use on hard surfaces differ significantly from cleaning heads for carrying out a similar operation on a soft surface, such afforded by carpet or upholstery, in the same way that different suction heads are needed for dry suction cleaning operations on different surfaces, such as hard or soft respectively.
SUMMARY OF THE INVENTION
Cleaning of hard floors is achieved more by the use of chemicals than mechanical or physical effort and floors tend to be mopped rather than scrubbed. However, the problem with conventional mopping is that of using the cleaning solution to rinse out the mopping head which is then squeezed out into the cleaning solution, quickly degrading the cleaning solution into the dirty water. The object of the invention is to provide a mopping head which allows clean cleaning solution to be used continuously and if the same cleaning solution, which having been applied to the surface to be cleaned, remains there for a short duration of time, giving the cleaning solution time to break down the dirt and grease attached to the surface and holds it in suspension.
The present invention provides an improved cleaning head for use in wet process cleaning operations on hard surfaces, which cleaning head has one or more of the following features:
an applicator for applying a cleaning liquid to a hard surface, said applicator comprising an operative surface of densely packed thin flexible filaments, for example afforded by a pile fabric, and a distributor body comprising a porous medium such as a body of foamed plastics material, and a liquid supply conduit arranged to deliver the cleaning liquid to said body; such applicator is disposed in a housing which defines a suction chamber for connection to a source of suction, the housing affording an air inlet adjacent to at least one edge of said applicator so as to be adapted to pick-up dry material from the surface being cleaned whilst the applicator is in use;
a brush of relatively harder material than the applicator operative surface arranged at at least one edge of said applicator, preferably at least at the edge opposite that at which said air inlet is arranged; a liquid pick-up housing comprising a suction chamber affording an air inlet in the form of a slot provided with flexible blades along its opposed side edges, such blades preferably being formed with parallel grooves on the faces which are presented outwardly of the slot.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features in accordance with the invention will now be described by way of example with reference to one embodiment of cleaning head in accordance with the invention and as shown in the accompanying drawings wherein:
FIG. 1 shows a partially cut away underneath plan view of such cleaning head for the application of a cleaning liquid;
FIG. 2 is a transverse section through the cleaning head on the line of a liquid delivery inlet; and
FIG. 3 is a transverse section through the head on the centre line with the head inverted as compared with FIG. 2 and in use for the collection of soiled liquid.
DESCRIPTION OF THE PREFERRED EMBODIMENT
As shown in the accompanying drawings, a preferred embodiment of a cleaning head in accordance with the invention comprises a rectangular body 10 which defines a first housing 20 with an applicator assembly 21 at the mouth thereof, the interior of the housing comprising a suction chamber 18, and a second housing 30 provided with a pick-up assembly 31, and defining internally a further suction chamber 19, the two suction chambers be
REFERENCES:
patent: 2885713 (1957-05-01), Morrill
patent: 3184780 (1965-05-01), Hageman
patent: 3195166 (1965-07-01), Wisner
patent: 3945736 (1976-03-01), Rittenbaum et al.
patent: 4119386 (1978-10-01), Cushing
patent: 4266317 (1981-05-01), Duda
patent: 4437203 (1984-03-01), Wisner
patent: 4596061 (1986-06-01), Henning
Stinson Frankie L.
Vax Appliances Limited
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