EP0991355A1

EP0991355A1 - Floor mop

Info

Publication number: EP0991355A1
Application number: EP98917385A
Authority: EP
Inventors: Christopher Robert Duncan; Michael Edward Gailes
Original assignee: Numatic International Ltd
Current assignee: Numatic International Ltd
Priority date: 1997-06-27
Filing date: 1998-04-16
Publication date: 2000-04-12
Anticipated expiration: 2018-04-16
Also published as: EP0991355B1; WO1999000050A1; DE69809233D1; DE69809233T2; AU7062598A; GB9713685D0

Abstract

This invention relates to the field of floor cleaning and floor treatment, and in particular relates to such activities carried out with use of a mop. Mops need to be frequently rinsed and charged with cleaning fluid and then pressed or wrung to remove excess fluid. The present application discloses a sieving arrangement for removing fluid from a mop comprising a mop stick (32) connected at a lower end thereof to a mop head (34), which sieving arrangement comprises a sieving surface against which the mop head may be pressed for removal of fluid and mop stick engagement means (35) configured and disposed to permit pivoting of the mop stick thereabout, the arrangement being such that a user may apply pressure against an upper end region of the mop stick in order to lever the mop head about said mop stick engagement means and against said sieving surface for the discharge of excess fluid in the mop head.

Description

FLOOR MOP

This invention relates to the field of floor cleaning and floor treatment, and in particular relates to such activities carried out with use of a mop.

Well known mopping systems comprise a mop stick with a mop head of cotton strands or other similar fluid-absorbent material, a bucket and some means by which excess fluid can be removed from the mop head once it has been immersed in fluid in the bucket. Many systems use a mop press

or wringer to remove excess fluid from the mop head.

In recent years flat mops have become increasingly widespread and popular for floor cleaning and for disinfection of floors. Flat head mops typically comprise a mop head pivotally attached to a mop stick. The mop

head is usually an elongate rectilinear flat member which carries on an

underside thereof an absorbent mopping layer. The mop head may be foldable so that the absorbent layer can be pressed to squeeze out excess

fluid after rinsing. Folding, rinsing and pressing a mop head is a rather protracted process. Because of this a sieving layer is often provided which permits pressing to be carried out without folding the mop head.

This involves pushing the mop head against the sieving surface so that the excess fluid drains through the surface and back into a bucket or other fluid

reservoir. Such a system is convenient, in that there is no need to fold the mop as would be required for pressing, but the method is only capable of removing about 20% to 30% of the liquid compared with 50% to 70% of liquid which is removed by pressing. Nevertheless, the sieving system has become popular because it is convenient.

It is an object of the present invention to provide a simple and easy to use method of removing excess fluid from mops with a greater efficiency than known sieving systems, and more conveniently than pressing or wringing but with less effort than is required for pressing or wringing.

According to one aspect of the present invention there is provided a sieving arrangement for removing fluid from a mop comprising a mop stick connected at a lower end to a mop head, which sieving arrangement comprises a sieving surface against which the mop head may be pressed for removal of fluid and mop stick engagement means configured and

disposed to permit pivoting of the mop stick thereabout, the arrangement being such that a user may apply pressure against an upper end region of

the mop stick in order to lever the mop head 34 about said mop stick engagement means and against said sieving surface for the discharge of

excess fluid in the mop head. In this way the mop stick may be used as a lever which is capable of creating a mechanical advantage and thereby increasing the pressure

exerted by the mop head on the sieving surface. This facilitates the removal

of increased volumes of fluid from the mop head.

The engagement means may be disposed above the sieving structure, the arrangement being such that the mop stick adopts a generally vertical orientation when the mop head is in contact with the sieving surface.

Preferably a fluid reservoir is disposed beneath the sieving surface so that sieved fluid is collected^' as it falls from the sieving surface. The sieving

arrangement may comprise support means for carrying the reservoir for

transport over a floor to be cleaned. The support means may comprise a wheeled trolley and the reservoir may comprise a bucket removably located on said trolley.

The mop stick engagement means is preferably carried by a portion of the

support means. In one embodiment the mop stick engagement means comprises a hook. The hook may be pivotally mounted so that the hook may be retracted. This is particularly useful when the reservoir is removable and the hook might otherwise foul the reservoir as it is removed from the

support means. Preferably the sieving surface is inclined from the horizontal so that when

the mop head is levered against the sieving surface the sieving surface exerts an upwards and horizontal reaction against the mop head.

The sieving surface may be elongate whereby the mop head may be slid

from one end thereof to the other by levering of the mop stick, the

movement assisting in the removal of excess fluid from the mop head.

The sieving surface may be defined by an upper surface of a sieving structure, which sieving structure comprises a plurality of spaced apart rollers which together define a plurality of sieving holes.

In a preferred arrangement the rollers are disposed in a plurality of rows.

Preferably the holes defined by said rollers are of a size which permits entry of the absorbent working surface of a mop head therein, thereby to improve

the fluid discharge effect on a sliding mop head in contact with said sieving member.

The rollers may each be configured as waisted beads and said sieving

holes are then defined by gaps corresponding to juxtaposed waist portions of adjacent beads. Preferably, between about 60% and 80% of the sieving

surface area is perforated by the sieving holes. The mop head may be a fiat mop head attached to the stick by means of a universal joint. This allows complete freedom of movement of the stick relative to the mop head. However, it is within the scope of this invention for, for example, only one degree of freedom to be present in the attachment between the stick and the flat mop head.

According to another aspect of the invention there is provided a mop suitable for use with any sieving arrangement described in the foregoing which mop comprises a mop stick connected at one end thereof to a mop head, wherein the mop stick is provided with abutment means adapted to locate the mop stick in engagement with the mop stick engagement means

of the sieving arrangement. The abutment means may comprise a collar positioned at a lower end region of the mop stick.

According to yet another aspect of the invention there is provided a floor

mopping system comprising a mop as hereinbefore described and further comprising a sieving arrangement as hereinbefore described.

The present invention is particularly suited for use with flat floor mops, but could find application with other sorts of mops including Kentucky type mops having a bundle of absorbent strands carried at a lower end of the

mop stick. A flat floor mop typically comprises a mop stick joined to a mop head by means of a universal joint, which mop head carries on an

underside thereof a fluid absorbent mopping layer. The present invention is particularly efficient when used with such a mop.

Following is a description by way of example only and with reference to the accompanying figures of the drawings of a method of putting the present invention into effect.

In the drawings:-

Figure 1 is a side view in perspective of a mopping system according to one embodiment of the present invention.

Figure 2 is an enlarged view of a fluid reservoir shown in figure 1.

Figures 3 and 4 are front views in perspective of a mopping system of figure 1 demonstrating the mode of use.

A mopping system according to the present invention is shown generally at

10 in figure 1. A trolley 11 comprises a tray with upstanding side walls and front and rear walls, which tray is provided with castors 12 at each corner

thereof. The trolley 11 is longer than it is wide, and at one end region 13 of the trolley is disposed an upstanding frame 14 comprised of tubular

uprights 15, 16, 17 and 18. The uprights together carry at the top end thereof a moulded plastics receptacle 20 for cleaning tools and detergents for treating water.

The other end region 21 of the trolley 11 carries a generally rectilinear bucket 22 into which may be poured cleaning solution or another fluid. A mop 30 is shown held in the bucket by the arm 31 of the user. The mop comprises a mop stick 32, a lower end 33 of which carries an articulated flat mop head 34. The said lower end is engaged with a hook member 35.

The hook is disposed in a plane generally parallel to the trolley floor 11 , the

open side of which hook faces the frame 14. The underside of the hook abuts a collar portion 39 of the mop lower end 33 in order to provide positive engagement for pivoting.

The bucket and hook arrangement is shown in more detail in figure 2. The hook 35 is carried on a crossbar 36 which extends between the two uprights 17 and 18 of the frame 14. The cross member has depending end portions 37 and 38 which are pivotally connected to flange portions 40 and

41 welded to the uprights 18 and 17. In this way the cross member may

be rotated backwards (ie towards the frame 14) so that the hook may adopt

an up standing configuration which permits easy removal of the bucket 22 from the trolley 11.

The bucket carries internally thereof a sieving tray 50. The sieving tray is

disposed at a back end 23 of the bucket and is inclined downwardly therefrom at a angle of about 45 degrees. The sieving tray comprises a plurality of waisted beads 51. The beads are disposed along four parallel inclined rows 52, 53, 54 and 55 respectively and one row 56 which forms a lip at a lower edge of the sieve tray and is generally parallel to the bottom of the bucket. This lip helps prevent the mop head 34 from slipping into the bucket when pressure is exerted thereon.

In use, the user 31 dips the mop head 34 into the bucket 22 filled with fluid to a level below the sieving tray 50. The lower end 33 of the mop stick 32 is then engaged with the hook 35 so that the mop head 34 rests upon the sieving tray 50. The user 31 then exerts a small backward pressure on the

mop stick 32 towards a front end 21 of the trolley, as indicated by the arrows in figure 1. The mop stick 32 pivots about the hook 35 to provide a mechanical advantage which strongly urges the mop head 34 against the sieving tray to affect discharge of fluid back into the bucket 22. For enhanced fluid removal, the mop head may be moved from side to side as shown in figures 3 and 4. The mop stick 32 is moved in the direction of the

arrows C and D in figures 3 and 4 respectively, while maintaining a slight backward pressure to ensure that the mop head remains pressed against the sieving tray. As the mop head is moved from side to side over the sieving tray, absorbent cotton strands 60 which make up the underside of the mop head 34 repeatedly enter and are squeezed out from gaps between the waisted beads 51 in the sieving tray (beads not shown in

figures 3 and 4 for the sake of clarity). In this way an enhanced removal of excess water occurs from the cotton strands without the need for

excessive pressure to be exerted by the user. In addition, when the trolley is carried on castors there is no tendency for the trolley to be displaced as the mop head is moved from side to side because the side to side movement is a balanced pivoting motion around the hook 35. Hence unlike prior art arrangements the trolley need not be firmly held or lodged against another article when the mop head is discharged.

Claims

1. A sieving arrangement for removing fluid from a mop comprising a mop stick connected at a lower end to a mop head, which sieving arrangement comprises a sieving surface against which the mop head may be pressed

for removal of fluid and mop stick engagement means 35 configured and disposed to permit pivoting of the mop stick thereabout, the arrangement

being such that a user may apply pressure against an upper end region of the mop stick 32 in order to lever the mop head 34 about said mop stick engagement means and against said sieving surface for the discharge of excess fluid in the mop head.

2. A sieving arrangement as claimed in any preceding claim wherein the

engagement means is disposed above the sieving structure, the arrangement being such that the mop stick adopts a generally vertical orientation when the mop head is in contact with the sieving surface.

3. A sieving arrangement as claimed in claim 1 or claim 2 and comprising a fluid reservoir disposed beneath the sieving surface.

4. A sieving arrangement as claimed in claim 3 and comprising support

means for carrying the reservoir for transport over a floor to be cleaned.

5. A sieving arrangement as claimed in claim 4 wherein the support means comprises a wheeled trolley 11 and the reservoir comprises a bucket 22 removably located on said trolley.

6. A sieving arrangement as claimed in claim 4 or claim 5 wherein the mop stick engagement means is carried by a portion of the support means.

7. A sieving arrangement as claimed in any preceding claim wherein the mop stick engagement means comprises a hook 35.

8. A sieving arrangement as claimed in claim 7 wherein the hook is pivotably mounted so that the hook may be retracted.

9. A sieving arrangement as claimed in any preceding claim wherein the sieving surface is inclined from the horizontal so that when the mop head

is levered against the sieving surface the sieving surface exerts an upwards and horizontal reaction against the mop head.

10. A sieving arrangement as claimed in any preceding claim wherein the sieving surface is elongate whereby the mop head may be slid from one end thereof to the other by levering of the mop stick, the movement

assisting in the removal of excess fluid from the mop head.

11. A sieving arrangement as claimed in any preceding claim wherein the

sieving surface is defined by an upper surface of a sieving structure, which sieving structure comprises a plurality of spaced apart rollers 51 which together define a plurality of sieving holes.

12. A sieving arrangement as claimed in claim 11 wherein said rollers are each configured as waisted beads 51 and said sieving holes are defined by gaps corresponding to juxtaposed waist portions of adjacent beads.

13. A sieving arrangement as claimed in claim 12 wherein between about 60% and 80% of the sieving surface area is perforated by the sieving holes.

14. A mop suitable for use with a sieving arrangement according to any preceding claim which mop comprises a mop stick connected at one end

thereof to a mop head, wherein the mop stick is provided with abutment

means adapted to locate the mop stick in engagement with the mop stick engagement means of the sieving arrangement.

15. A mop as claimed in claim 7 wherein said abutment means comprises a collar 39 positioned at a lower end region of the mop stick.

16. A floor mopping system 10 comprising a mop as claimed in claim 14 or claim 15 and comprising a sieving arrangement as claimed in any of claims

1 to 13.