DE2405258A1 - FOAM CLEANER - Google Patents

Description

4690 Herne, 8000 Munich 40,

Freiligrathstrasse 19 Π! «Ι i« "OU Dak ·· Eisenacher Strasse

P.O. Box 140 Uipi.-ing. ΓΙ. Π. Dan Γ P _a t.-Anw. Betzier

Pat. Herrmann-TrentepoM DID! -PhVS EdUSTCl ΒβΐΖΐθΓ Telephone: 363011

Telephone: 51013 r "J" 36 3012

⁵¹⁰¹⁴ Dipl.-Ing. W. Herrmann-Trentepohl ^ ³⁰¹³

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Bahrpatente Herne PATENTANWÄLTE BabetzpatMünchen

Telex 08 229 853 Telex5215360

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2 A O 5 2 5 Q Bayerische Vereinsbank Munich 952

Dresdner Bank AQ Herne 7-520 499 Post check account Dortmund 558 68-467

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February 4, 1974 Bisseil Inc., Grand Rapids, Michigan 49501, USA

Foam cleaning device

The invention relates to a foam cleaning device with a foam generator. The invention is directed in particular on a foam cleaning device for the pile surfaces of carpets and the like, with a liquid cleaning foam or shampoo material is applied to the pile surface in the form of foam.

In recent years, foam cleaning of carpets, carpeting and the like has become more common. This works in particular back to relatively cheap foam applicators, as can be found in US Pat. No. 2,975,462, for example. Most applicators will be liquid Shampoo distributed on a rubber-like roller, which is compressed when rolling over the floor and which Liquid turned into foam. The roller then applies the foam to the pile surface.

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In some cases it has been found to be desirable to provide drive means for generating the foam and for Provide incorporation of the same into the pile surface. Such a device is for example in US-PS 3 602 933. In this device, a crank mechanism swings a brush into and out of crush-impact engagement with a sponge at a substantial frequency while the brush works the foam into the pile surface.

The invention is directed to an improvement in the device of US Pat. No. 3,602,933, wherein the crank mechanism and vibratory forces, as a result of the crank and the back and forth outgoing brush are eliminated. The device is less expensive to manufacture and still provides an excellent one Rapid generation of relatively dry foam as a result of improved distribution of the shampoo liquid before it is turned into foam.

According to the invention is a freely rotatable rubber-like roller with open cells below a conventional distributor for Arranged intake of the shampoo in liquid form. A powered rotating brush is provided near the roller, whose brush bristles hit the roller and squeeze the roller to remove the shampoo from the liquid into the To transform foam shape. The foam is transferred from the brush to the pile surface and into the pile through the Brush incorporated.

The drawings show in

Fig. 1 is a perspective view of a device

according to the invention;

Fig. 2 is a front end view of the device with partially parts removed, partly broken off and partly drawn in section; and in

409833/0341

3 shows a longitudinal section through the device along the line 3-3 in FIG. 2.

As can be seen from the drawings, the subject matter of the invention is a device for shampooing of carpets and the like with a hand-operated handle 1, · a tank 2 for the liquid shampoo, which is attached to the handle 1 is attached, and with a frame-like lower case 3. The case 3 includes an upper cover 4 and a lower platform-like part 5.

The foam cleaning device is supported for a back and forth movement over the carpet surface 6 via devices, which in this embodiment consist of a pair of rotating rollers 7, which are also used to incorporate the Shampoos contribute to the pile of carpets. The rollers 7 can be of any suitable construction, i.e. H. from proportionately consist of rigid, grooved plastic and are rotatably mounted below the housing part 5 in a suitable manner.

The device contains a feed device for the liquid shampoo with a tank 2, which is connected to an elongated liquid distributor 9 via a line which is attached to the housing part 5. The manifold 9 is provided with the usual series of openings 10 through which the liquid can pass down. Not shown facilities known per se can be provided to control the flow of liquid shampoo from tank 2 to manifold 9.

The liquid coming through the openings 10 is first converted into foam on the surface 6 and then onto this Surface applied. For this purpose, and in accordance with the invention, an elongated roller 11 is made Polyurethane or other suitable compressible sponge-like material with open cells below the manifold 9 and parallel to it as well as being in the same

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Arranged extending direction. The roller can be rotated freely on the housing part 5 through end bearings 12. The purpose this arrangement will be explained in more detail later. The roller picks up the shampoo in liquid form, which drips down through the openings 10.

Also in accordance with the invention are means for rotatably engaging and crimping the peripheral portion of FIG Roller 11 is provided in order to produce foam from the liquid shampoo. For this purpose there is an elongated rotatable Brush member 13 arranged in the vicinity and parallel to the roller 11, the axis of which is slightly down and to one side the roller axis is relocated. The brush member 13 extends generally in the direction of the roller 11 and contains a core 14 which is mounted on the housing part 5 by end bearings 15. Also on the core is a multitude arranged by rows of bristles 16. As can be seen from the drawing, the tufts of bristles 16 are generally tangential arranged to the surface of the core 14 and form helical rows.

The length of the brushes 16 is chosen so that they Overlap the peripheral part of the tube 11 in a compressive manner. In other words, this means that the combined radii the roller 11 and the element 13 are larger than the distance between the axles.

The link 13 is driven to rotate by a motor 17 via a connecting belt 18. The motor 17 is mounted on the housing part 5 and drives the member 13 preferably at a speed between 600 and 700 revolutions per minute.

The brush member 13 is rotated by the motor 17 so that that the brushes 16 squeeze or knead the peripheral part of the roller 11. This leads to, that the liquid shampoo inside the roller turns into foam 19, which is squeezed out of the roller and through the

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Brushes 16 is transferred to the surface 6. The brushes then work the foam into the surface 6 while rotating, supported by the support rollers 7 as soon as the device is moved over the surface. The spiral shape of the rows of brushes, As can be seen from the drawings, a progressive continuous kneading action is produced on the roller 11.

That dripping down onto the ¥ alze 11 through the openings 10 liquid shampoo spreads unevenly through the roller when it is set. As a result, the Brushes 16, when they strike roller 11 in rotation, the latter rotates in response thereto. The centrifugal force generated thereby leads to a more even distribution of the liquid on the roller and the Liquid is concentrated in the peripheral area with which the brushes 16 are in contact. This prevents the Roller 11 is overloaded by unusable shampoo. Additionally, the cooperative rotation of the brush member reduces 13 and the roller 11 the friction between these two elements to a minimum, so that with it the wear is largely reduced.

The brush member 13 can rotate in either direction with equally good results.

- Patent claims: -

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Claims (6)

Claims Device length for applying liquid shampoos in the form of a foam to a pile surface, characterized by the combination of the following features: (a) a liquid distributor; (b) means for supplying liquid "shampoos" to the dispenser; (c) a cellular compressible member below the manifold for containing the liquid the distributor; (d) rotatable brush units with bristles disposed below the member which encircle the peripheral portion of the Overlap the limb while compressing it; (e) Means for rotating the brush member and thus kneading the peripheral part of the member to generate foam from the liquid shampoo. 2. Device for applying liquid shampoos in the form of foam to a pile surface, g e k e η η draws by combining the following features: (a) a liquid distributor; (■ b) devices for supplying liquid shampoos to the distributor; (c) an elongated cellular compressible roller below the manifold for receiving Liquid from the distributor; (d) a rotating brush immediately below the roller with rows of bristles covering the peripheral portion of the Overlap roller compressively; (e) Devices for rotating the brush and thus for kneading the peripheral part of the roller to produce 409833/0341 generation of foam from the liquid shampoo. 3. Apparatus according to claim 2, characterized by means for mounting the roller for a free rotation when the brush rotates. 4. Apparatus according to claim 2, characterized due to the concentration of the liquid shampoo in the peripheral part of the roller during the rotation of the brush. 5. Apparatus according to claim 4, characterized in that the liquid concentration device is that the roller is freely rotatably mounted upon rotation of the brush, so that the Centrifugal forces concentrate the liquid shampoo on the peripheral part of the roller. 6. Apparatus according to claim 2, characterized in that the tufts of bristles in vendular-shaped Rows are arranged so that the brush circulation leads to a progressive continuous kneading action leads to the roller. 409833/0341 Blank page