EP2038067A1 - Rotating nozzle - Google Patents

Rotating nozzle

Info

Publication number
EP2038067A1
EP2038067A1 EP06765965A EP06765965A EP2038067A1 EP 2038067 A1 EP2038067 A1 EP 2038067A1 EP 06765965 A EP06765965 A EP 06765965A EP 06765965 A EP06765965 A EP 06765965A EP 2038067 A1 EP2038067 A1 EP 2038067A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
house
chamber
nozzle member
end portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP06765965A
Other languages
German (de)
French (fr)
Other versions
EP2038067B1 (en
Inventor
Jørgen Madsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nilfisk AS
Original Assignee
Nilfisk Alto AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nilfisk Alto AS filed Critical Nilfisk Alto AS
Publication of EP2038067A1 publication Critical patent/EP2038067A1/en
Application granted granted Critical
Publication of EP2038067B1 publication Critical patent/EP2038067B1/en
Anticipated expiration legal-status Critical
Active legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/04—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet
    • B05B3/0417—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet comprising a liquid driven rotor, e.g. a turbine
    • B05B3/0429—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements driven by the liquid or other fluent material discharged, e.g. the liquid actuating a motor before passing to the outlet comprising a liquid driven rotor, e.g. a turbine the rotating outlet elements being directly attached to the rotor or being an integral part thereof
    • B05B3/043—Rotor nozzles

Definitions

  • the present invention relates generally to nozzles for high-pressure cleaning devices, and particularly to such nozzles provided with means making the jet of pressure fluid leaving the nozzle rotate relative to the main body of the nozzle of the cleaning device.
  • EP 0 879 644 B1 describes a rotating nozzle section of a cleaning device comprising a cylindrical nozzle house chamber in which there is provided a nozzle member, the exit end of which is in engagement with a seat in such a rnan- ner that the nozzle member can undergo pivotal or rotational movement within the cylindrical nozzle house chamber under the influence of high-pressure fluid circulating in the chamber.
  • the nozzle member comprises a frusto-conical portion, the outer surface of which rests against the inner wall of a corresponding portion of the nozzle house chamber, when the nozzle member is rotating.
  • the desired maximum rota- tional velocity of the nozzle member about its longitudinal axis is determined by the frictional force between the surface of the frusto-conical portion of the nozzle member and the corresponding portion of the inner wall of the nozzle house chamber.
  • Specific materials suitable for these parts and specific coefficients of friction are mentioned in the document. By the choice of suitable materials or coefficients of friction the rotational velocity of the nozzle member about its own longitudinal axis can be determined.
  • DE 40 13 446 C1 describes a rotating nozzle section provided with a nozzle house chamber into which high-pressure fluid is led in a manner making the fluid in the nozzle house chamber rotate about the longitudinal axis hereof.
  • a nozzle member is rotatably provided in the nozzle house chamber and brought to rotate under the influence of the fluid rotating in the nozzle house chamber. A portion of the outer circumferential surface of the nozzle member is during rotation in contact with a corresponding portion of the inner wall of the nozzle house chamber via an O-ring.
  • EP 0 600 937 B1 describes a rotating nozzle for a cleaning device of a kind somewhat similar to the one described above and also comprising a nozzle house chamber in which a nozzle member is mounted for rotation about the longitu- dinal axis of the nozzle house driven by the cleaning fluid rotating in the nozzle house chamber.
  • the nozzle house chamber is provided with frusto-conical sidewalls along which the nozzle member moves rotated by the fluid in the chamber.
  • the nozzle member is furthermore at the end opposite its fluid exit provided with an axially extending channel, in which is accommodated a ball that due to the centrifugal force exerted on the ball during rotation of the nozzle member is urged against a contact surface provided at an adjacent longitudinal end of the nozzle house chamber.
  • the frictionat force between the ball and the contact surface which force increases with the rotational velocity of the nozzle member, also serve to limit the rotational velocity of the nozzle member about the longitudinal axis of the nozzle house.
  • a rotating nozzle of the above kind comprising means for limiting the rotational velocity of the nozzle member about the longitudinal axis of the nozzle house and about its own longitudinal axis, hence maintaining a compact jet of cleaning fluid rotating at a certain predetermined optimal rotational velocity about the longitudinal axis of the nozzle house or within a certain predetermined velocity interval.
  • a desirable interval is between 2500 RPM to 3500 RPM.
  • these objects are attained by a single technical feature, thus serving the dual function of initiating the rotation of the nozzle member and limiting the final rotational velocity of the nozzle member
  • the rotating nozzle according to the invention does in principle not place specific requirements on materials used for the different parts of the rotating nozzle or frictional coefficients between adjacent mate- rials in the rotational nozzle apart from the fact that a sufficient friction must during rotation of the nozzle member in the nozzle house chamber be present at the contact point between the nozzle member and the corresponding portion of the inner wall of the nozzle house chamber in order to ensure that the nozzle member actually rolls on the inner wall of the nozzle house chamber during operation of the rotating nozzle.
  • the rotor nozzle comprises a nozzle house provided with a nozzle house chamber having a fluid exit opening through which a jet of cleaning fluid is ejected, where the exit opening comprises a seat co-operating with a first end portion of a nozzle member accommodated within said nozzle house chamber, such that the nozzle member can undergo pivotal and rotational movement relative to a longitudinal axis X through the nozzle house, the nozzle house being provided with an inlet chamber or inlet portion receiving cleaning fluid from a suitable fluid source, from which inlet chamber fluid flows through a diffuser into said nozzle house chamber, in which said nozzle member is provided, said diffuser causing the fluid in the nozzle house chamber to rotate about the longitudinal axis X of the nozzle house, in such a manner that this rotation of fluid causes the nozzle member to rotate about the longitudinal axis X of the nozzle house, and where a second end portion of the nozzle member longitudinally opposite said first end por- tion of the nozzle member is provided with at least one opening
  • the said one or more openings could be of a substantially square or rectangular configuration and formed in said second end portion of the nozzle member, as will be described in further details in the detailed description of the invention.
  • other shapes of openings may be used according to the invention, such as circular or elliptic openings.
  • the diffuser is, in a manner that is known per se within the art, provided with fluid passages leading from the inlet chamber and exiting substantially tangentially in the nozzle house chamber, whereby the fluid entering the nozzle house chamber is brought to rotate about the longitudinal axis of the nozzle house,
  • the one or more rotation impeding openings are acted upon by the rotating body of fluid in the nozzle house chamber in a manner which wilt be more fully understood with reference to a description of an embodiment of the invention given in the following.
  • the fluid action of said one or more openings will initially have the effect that the nozzle member starts to rotate, and when a certain maximum desired rotational velocity of the nozzle member has been reached, fluid action on the opening(s) will impede the rotation of the nozzle member due to a counter rotation of the nozzle member itself about its own longitudinal axis, thus setting the maximum rotational velocity of the nozzle member.
  • said openings can furthermore provide fluid communication between the nozzle house chamber and a nozzle chamber in-side the nozzle member from which the fluid can exit through a nozzle outlet in the first end portion of the nozzle member as a jet of cleaning fluid.
  • the nozzle member is furthermore provided with a stabiliser at the second end portion of the nozzle member, which due to the inertia/moment of inertia of the stabiliser stabilises the movement of the nozzle member.
  • a stabiliser at the second end portion of the nozzle member, which due to the inertia/moment of inertia of the stabiliser stabilises the movement of the nozzle member.
  • the stabi-liser could form part of the velocity limiting means and/or the above-mentioned fluid passages.
  • said stabiliser could be made of metal (for instance aluminium) or another relatively heavy material
  • the first end portion of the nozzle could be made of a ceramic material to reduce abrasion of this portion of the nozzle member
  • the remaining parts of the nozzle member could be made of a plastics material, for instance the same material as the nozzle house itself.
  • the seat mentioned above could for instance also be made of a ceramic material.
  • figure 1(a) shows a longitudinal cross sectional view of the nozzle section according to an embodiment of the invention
  • figure 1(b) shows a diffuser used in the embodiment of figure 1 (a);
  • figure 2 shows a further longitudinal cross sectional view of the nozzle section of the embodiment shown in figure 1, specifically illustrating the presence of a fluid pas- sage leading from the nozzle house chamber to an interior chamber in the nozzle member;
  • figure 3 shows a schematic representation of a lateral cross sectional view along line A - A in figure 2, illustrating the operational principle of the invention.
  • figure 4 shows a schematic exploded perspective view of an embodiment of the nozzle member according to the invention.
  • the diffuser 5 comprises two portions 23 and 24, the latter provided with the sealing O-ring 6, and an internal chamber 21 effectively forming part of the total inlet chamber 4, when the diffuser is provided in the nozzle house
  • the upper end face of the portion 24 rests against a shoulder portion 25 on the inside of the nozzle house
  • Portion 23 of the diffuser 5 has a diameter a little less than the diameter of the corresponding portion of the inner surface of the nozzle house, whereby a circumferential gap 22 is formed between portion 23 of the diffuser 5 and the corresponding portion of the inner surface of the nozzle house
  • Fluid communicating canals 26 are provided between the chamber 21 and the circumferential surface of portion 23 of the diffuser 5 in such a manner that fluid is led substantially tangentially relative to the longitudinal axis X of the nozzle house out into the gap 22 through openings 20.
  • the nozzle house 2 is provided with an internal chamber, the nozzle house chamber 7, in which a hollow nozzle member 8 is pivota- bly/rotationally guided by engagement between a first end portion 13 of the nozzle member 8 and a corresponding seat 14.
  • This seat 14 is provided at a fluid exit opening 15 of the nozzle house longitudinally opposite the inlet 3.
  • the nozzle member 8 comprises a substantially tubular body around a longitudinal axis Xi M -
  • the nozzle member 8 is provided with an internal nozzle chamber 12 at one longitudinal end terminated by a first end portion 13 comprising a rounded (spherical) portion 13 * for engagement with a similarly shaped inner portion of the seat 14.
  • This arrangement allows the nozzle member 8 to undergo pivotal or rotational movement relative to the seat 14 and hence to the nozzle house 2
  • the end portion 13 is provided with a nozzle outlet 18 for fluid passing through the nozzle member 8. This fluid can leave the nozzle house 2 through the fluid exit opening 15.
  • the longitudinal end of the nozzle member 8 opposite the first end portion 13 is provided with an end portion 9, in the shown embodiment of a somewhat larger outer diameter than the main middle portion of the nozzle member 8.
  • a stabilising member 11 made of a relatively heavy material, such as aluminium, which stabilises the movement of the nozzle member 8 due to its inertia/moment of inertia.
  • the stabiliser 11 may be provided with a cylindrical end por- tion 17 fitting tightly into the cylindrical inner space of the end portion 9 of the nozzle member 8.
  • a portion of the circumferential surface of the stabiliser 11 moves in contact with the inner surface of the nozzle house chamber as indicated by P in figure 1(a).
  • the end portion 9 of the nozzle member 8 is furthermore provided with one or more radial openings 10 distributed over the circumferential surface of the end portion 9, The purposes of these openings have been described initially in the summary of the invention and will be further described in connection with figure 3.
  • the nozzle member 8 is according to this embodiment, provided with fluid passages 19 connecting the openings 10 with the internal nozzle chamber 12 of the nozzle member 8, Such passages, of which only a single is shown in cross sectional view in figure 2, are distributed along the insert portion 17 of the stabiliser 1 1 from each corresponding opening 10 to the internal nozzle chamber 12.
  • the complete fluid path through the rotating nozzle is from the intet 3 through the inlet chamber 4 and via the passages 26 in the stabiliser 5 to the nozzle house chamber 7, and from hence via the passages 19 to the inner nozzle chamber 12 of the nozzle member 8, and finally through the nozzle outlet 18.
  • FIG 3 there is shown a schematic representation of a lateral cross sectional view along line AA in figure 2, shown partly to explain the function of the rotating nozzle mechanism according to the present invention.
  • Figure 3 thus shows a cross sectional view through the nozzle house chamber 7 of the nozzle house 2 viewed towards the end face 17" of the stabiliser 11
  • Also indicated in figure 3 is a single of the openings 10 in the circumferentia! surface of the end portion 9 of the nozzle member 8.
  • the rotating nozzle cleaning fluid rotates within the nozzle house chamber 7, as indicated by arrow B in figure 3, and this fluid rotation causes the end of the nozzle member longitudinally opposite the nozzle exit 18 to rotate within the nozzle house chamber 7 along the inner circumferential surface hereof, as indicated by P.
  • the openings 10 serve the dual function initially to help starting the rotation of the nozzle member 8 and to determine the maximum rotational velocity of the rotating nozzle 8 according to the invention.
  • FIG 4 there is shown an exploded view of a specific embodiment of the nozzle member 8 according to the invention.
  • the inner wall of the end portion 9 of the nozzle member 8 is provided with a number of fluid channels 19 formed between thicker wall portions 27 of the inner wall of the end portion 9 and the outer circumferential surface of the insert portion 17 of the stabiliser 11 , when this is inserted into the end portion 9 of the nozzle member 8.
  • These fluid channels terminate in radiaiiy inwardly extending sections 28 communicating with the second nozzle chamber 12 in the nozzle member 8.

Landscapes

  • Nozzles (AREA)

Abstract

The present invention relates to a rotating nozzle for high-pressure cleaning devices comprising a nozzle house (2) provided with a fluid exit opening (15) comprising a seat (14) co-operating with a first end portion (13) of a nozzle member (8), such that the nozzle member (8) can undergo pivotal or rotational movement relative to a lon- gitudinal axis (X) through the nozzle house (2), the nozzle house (2) being provided with an inlet charnber(4), from which fluid flows through a diffuser (5) into a nozzle house chamber (7), in which said nozzle member (8) is provided, where the nozzle member (8) according to a specific embodiment of the invention, is furthermore provided with a second end portion (9) longitudinally opposite the first end portion (13) of the nozzle member (8), which second portion is provided with at least one opening (10) serving the dual purpose of initiating rotation of the nozzle member (8) and determining its maximum rotational velocity.

Description

ROTATING NOZZLE
TECHNICAL FIELD
The present invention relates generally to nozzles for high-pressure cleaning devices, and particularly to such nozzles provided with means making the jet of pressure fluid leaving the nozzle rotate relative to the main body of the nozzle of the cleaning device.
BACKGROUND OF THE INVENTION
It is known within the art to apply rotating nozzles in connection with high-pressure cleaning devices.
Thus for instance EP 0 879 644 B1 describes a rotating nozzle section of a cleaning device comprising a cylindrical nozzle house chamber in which there is provided a nozzle member, the exit end of which is in engagement with a seat in such a rnan- ner that the nozzle member can undergo pivotal or rotational movement within the cylindrical nozzle house chamber under the influence of high-pressure fluid circulating in the chamber. The nozzle member comprises a frusto-conical portion, the outer surface of which rests against the inner wall of a corresponding portion of the nozzle house chamber, when the nozzle member is rotating. The desired maximum rota- tional velocity of the nozzle member about its longitudinal axis is determined by the frictional force between the surface of the frusto-conical portion of the nozzle member and the corresponding portion of the inner wall of the nozzle house chamber. Specific materials suitable for these parts and specific coefficients of friction are mentioned in the document. By the choice of suitable materials or coefficients of friction the rotational velocity of the nozzle member about its own longitudinal axis can be determined.
DE 40 13 446 C1 describes a rotating nozzle section provided with a nozzle house chamber into which high-pressure fluid is led in a manner making the fluid in the nozzle house chamber rotate about the longitudinal axis hereof. As in the above document a nozzle member is rotatably provided in the nozzle house chamber and brought to rotate under the influence of the fluid rotating in the nozzle house chamber. A portion of the outer circumferential surface of the nozzle member is during rotation in contact with a corresponding portion of the inner wall of the nozzle house chamber via an O-ring. The coefficient of friction between this O-ring and the inner wall of the nozzle house chamber is described as limiting the rotational velocity of the nozzle member itseif about its own longitudinal axis, thereby maintaining a compact jet of cleaning fluid circulating in the surrounding space as a consequence of the rotation of the nozzle member about the longitudinal axis of the nozzte house itself.
Furthermore EP 0 600 937 B1 describes a rotating nozzle for a cleaning device of a kind somewhat similar to the one described above and also comprising a nozzle house chamber in which a nozzle member is mounted for rotation about the longitu- dinal axis of the nozzle house driven by the cleaning fluid rotating in the nozzle house chamber. The nozzle house chamber is provided with frusto-conical sidewalls along which the nozzle member moves rotated by the fluid in the chamber. Between the nozzle member and the side wails of the nozzle house chamber is inserted two O-rings, which (partly through interaction with the fluid in the chamber) during rota- tion of the nozzle member impede the rotational movement of the nozzle member about the longitudinal axis of the nozzle house and hence function as a break, limiting the rotational velocity of the nozzle member about the longitudinal axis of the nozzle house. The nozzle member is furthermore at the end opposite its fluid exit provided with an axially extending channel, in which is accommodated a ball that due to the centrifugal force exerted on the ball during rotation of the nozzle member is urged against a contact surface provided at an adjacent longitudinal end of the nozzle house chamber. The frictionat force between the ball and the contact surface, which force increases with the rotational velocity of the nozzle member, also serve to limit the rotational velocity of the nozzle member about the longitudinal axis of the nozzle house.
It is a problem of rotating nozzle arrangements that a very high velocity of cleaning fluid is required in order to initiate rotational movement of the nozzle member in the nozzle house chamber and to overcome friction. Furthermore it is required to limit the rotational velocity of the nozzle member both above the longitudinal axis of the nozzle house and about the nozzle members own longitudinal axis in order to obtain optimal cleaning efficiency.
SUMMARY OF THE INVENTION
On the above background it is an object of the present invention to provide a rotating nozzle of the above kind comprising means for limiting the rotational velocity of the nozzle member about the longitudinal axis of the nozzle house and about its own longitudinal axis, hence maintaining a compact jet of cleaning fluid rotating at a certain predetermined optimal rotational velocity about the longitudinal axis of the nozzle house or within a certain predetermined velocity interval. Although other velocity intervals may be chosen a desirable interval is between 2500 RPM to 3500 RPM.
It is a further object of the invention to provide means for initiating the rotation of the nozzle member.
Desirably, although not necessarily, these objects are attained by a single technical feature, thus serving the dual function of initiating the rotation of the nozzle member and limiting the final rotational velocity of the nozzle member
At least according to specific embodiments of the invention, it is a further object to provide said velocity limiting/rotation initiating means in such a manner that these means can also function at least as part of one or more fluid communication passages leading cleaning fluid from the nozzle house chamber to the fluid exit of the nozzle member
The above objects are advantageously attained according to the present invention with a rotating nozzle member not comprising parts undergoing relative displacement or rotation to other parts of the nozzle member, as for instance the ball member described in EP 0 879 644 Bl Furthermore the rotating nozzle according to the invention does in principle not place specific requirements on materials used for the different parts of the rotating nozzle or frictional coefficients between adjacent mate- rials in the rotational nozzle apart from the fact that a sufficient friction must during rotation of the nozzle member in the nozzle house chamber be present at the contact point between the nozzle member and the corresponding portion of the inner wall of the nozzle house chamber in order to ensure that the nozzle member actually rolls on the inner wall of the nozzle house chamber during operation of the rotating nozzle.
These and further objects and advantages are according to the invention attained with a rotating nozzle for a high-pressure cleaning device as defined by claim 1. An alternative to the rotating nozzle defined by claim 1 , which does also fali within the scope of the present invention, is defined in claim 2.
Thus the rotor nozzle according to the invention comprises a nozzle house provided with a nozzle house chamber having a fluid exit opening through which a jet of cleaning fluid is ejected, where the exit opening comprises a seat co-operating with a first end portion of a nozzle member accommodated within said nozzle house chamber, such that the nozzle member can undergo pivotal and rotational movement relative to a longitudinal axis X through the nozzle house, the nozzle house being provided with an inlet chamber or inlet portion receiving cleaning fluid from a suitable fluid source, from which inlet chamber fluid flows through a diffuser into said nozzle house chamber, in which said nozzle member is provided, said diffuser causing the fluid in the nozzle house chamber to rotate about the longitudinal axis X of the nozzle house, in such a manner that this rotation of fluid causes the nozzle member to rotate about the longitudinal axis X of the nozzle house, and where a second end portion of the nozzle member longitudinally opposite said first end por- tion of the nozzle member is provided with at least one opening in the circumferential surface of the nozzle member and adapted for co-operation with the fluid flowing in the nozzle house chamber, As an alternative, as defined by claim 2, at least one protrusion extending substantially radially outwardly from the circumferential surface of the nozzle member and adapted for co-operation with the fluid flowing in the nozzle house chamber could, according to the invention, be provided on the nozzle member. Even combinations of said openings and protrusions provided on the nozzle member would be conceivable and would fall within the scope of the present invention. Specifically the said one or more openings could be of a substantially square or rectangular configuration and formed in said second end portion of the nozzle member, as will be described in further details in the detailed description of the invention. Alternatively, other shapes of openings may be used according to the invention, such as circular or elliptic openings.
The diffuser is, in a manner that is known per se within the art, provided with fluid passages leading from the inlet chamber and exiting substantially tangentially in the nozzle house chamber, whereby the fluid entering the nozzle house chamber is brought to rotate about the longitudinal axis of the nozzle house,
The one or more rotation impeding openings (or alternatively protrusions) are acted upon by the rotating body of fluid in the nozzle house chamber in a manner which wilt be more fully understood with reference to a description of an embodiment of the invention given in the following. The fluid action of said one or more openings will initially have the effect that the nozzle member starts to rotate, and when a certain maximum desired rotational velocity of the nozzle member has been reached, fluid action on the opening(s) will impede the rotation of the nozzle member due to a counter rotation of the nozzle member itself about its own longitudinal axis, thus setting the maximum rotational velocity of the nozzle member.
According to an embodiment of the invention, said openings can furthermore provide fluid communication between the nozzle house chamber and a nozzle chamber in-side the nozzle member from which the fluid can exit through a nozzle outlet in the first end portion of the nozzle member as a jet of cleaning fluid.
According to a preferred embodiment of the invention, the nozzle member is furthermore provided with a stabiliser at the second end portion of the nozzle member, which due to the inertia/moment of inertia of the stabiliser stabilises the movement of the nozzle member. Preferably - although not necessarily - the stabi-liser could form part of the velocity limiting means and/or the above-mentioned fluid passages.
According to a specific embodiment of the invention, said stabiliser could be made of metal (for instance aluminium) or another relatively heavy material, the first end portion of the nozzle could be made of a ceramic material to reduce abrasion of this portion of the nozzle member, and the remaining parts of the nozzle member could be made of a plastics material, for instance the same material as the nozzle house itself. The seat mentioned above could for instance also be made of a ceramic material.
BRIEF DESCRIPTION QF THE DRAWINGS
The invention itself and its mode of operation will be better understood with refer- ence to the following detailed description of an embodiment hereof in conjunction with the figures of the drawing, where
figure 1(a) shows a longitudinal cross sectional view of the nozzle section according to an embodiment of the invention;
figure 1(b) shows a diffuser used in the embodiment of figure 1 (a);
figure 2 shows a further longitudinal cross sectional view of the nozzle section of the embodiment shown in figure 1, specifically illustrating the presence of a fluid pas- sage leading from the nozzle house chamber to an interior chamber in the nozzle member;
figure 3 shows a schematic representation of a lateral cross sectional view along line A - A in figure 2, illustrating the operational principle of the invention; and
figure 4 shows a schematic exploded perspective view of an embodiment of the nozzle member according to the invention.
DETAILED DESCRIPTION OF THE INVENTION
In the following a detailed description of a specific embodiment of the rotating nozzle according to the invention is described, but it is understood that a person skilled in the art will be able to conceive other embodiments of the basic inventive concepts set forth in the summary of the invention without deviating from the scope of the invention as defined by the independent claim.
Thus with reference to figure 1(a) there is shown a longitudinal cross sectional view of the rotating nozzle according to an embodiment of the invention generally indicated by reference numerai 1 in figure 1 (a). The rotary nozzle 1 comprises a nozzle house 2, forming a body of revolution about a longitudinal axis X. At one longitudinal end the nozzle house 2 is provided with an inlet 3, through which cleaning fluid under pressure is led to an inlet chamber 4 terminated by a diffuser 5 sealed against the inner surface of the inlet chamber 4, for instance by an O-ring 6,
The details of the diffuser 5 according to this embodiment of the invention are shown in figure 1 (b). The diffuser 5 comprises two portions 23 and 24, the latter provided with the sealing O-ring 6, and an internal chamber 21 effectively forming part of the total inlet chamber 4, when the diffuser is provided in the nozzle house The upper end face of the portion 24 rests against a shoulder portion 25 on the inside of the nozzle house Portion 23 of the diffuser 5 has a diameter a little less than the diameter of the corresponding portion of the inner surface of the nozzle house, whereby a circumferential gap 22 is formed between portion 23 of the diffuser 5 and the corresponding portion of the inner surface of the nozzle house Fluid communicating canals 26 are provided between the chamber 21 and the circumferential surface of portion 23 of the diffuser 5 in such a manner that fluid is led substantially tangentially relative to the longitudinal axis X of the nozzle house out into the gap 22 through openings 20. By these means fluid leaving the diffuser will eventually rotate in the nozzle house chamber 7.
Referring again to figure 1(a) the nozzle house 2 is provided with an internal chamber, the nozzle house chamber 7, in which a hollow nozzle member 8 is pivota- bly/rotationally guided by engagement between a first end portion 13 of the nozzle member 8 and a corresponding seat 14. This seat 14 is provided at a fluid exit opening 15 of the nozzle house longitudinally opposite the inlet 3.
A nozzle member 8 according to an embodiment of the invention will now be described with reference to figures 1(a) and 2, The nozzle member 8 comprises a substantially tubular body around a longitudinal axis XiM- The nozzle member 8 is provided with an internal nozzle chamber 12 at one longitudinal end terminated by a first end portion 13 comprising a rounded (spherical) portion 13* for engagement with a similarly shaped inner portion of the seat 14. This arrangement allows the nozzle member 8 to undergo pivotal or rotational movement relative to the seat 14 and hence to the nozzle house 2, The end portion 13 is provided with a nozzle outlet 18 for fluid passing through the nozzle member 8. This fluid can leave the nozzle house 2 through the fluid exit opening 15. The longitudinal end of the nozzle member 8 opposite the first end portion 13 is provided with an end portion 9, in the shown embodiment of a somewhat larger outer diameter than the main middle portion of the nozzle member 8. In this end portion 9 there ts inserted a stabilising member 11 made of a relatively heavy material, such as aluminium, which stabilises the movement of the nozzle member 8 due to its inertia/moment of inertia. The stabiliser 11 may be provided with a cylindrical end por- tion 17 fitting tightly into the cylindrical inner space of the end portion 9 of the nozzle member 8. During rotational movement of the nozzle member 8 within the nozzle house chamber 7, a portion of the circumferential surface of the stabiliser 11 moves in contact with the inner surface of the nozzle house chamber as indicated by P in figure 1(a).
The end portion 9 of the nozzle member 8 is furthermore provided with one or more radial openings 10 distributed over the circumferential surface of the end portion 9, The purposes of these openings have been described initially in the summary of the invention and will be further described in connection with figure 3.
Referring to figure 2, the complete fluid path from the inlet 3 to the nozzle outlet 18 of the rotating nozzle according to this embodiment of the invention is described. Specifically the nozzle member 8, is according to this embodiment, provided with fluid passages 19 connecting the openings 10 with the internal nozzle chamber 12 of the nozzle member 8, Such passages, of which only a single is shown in cross sectional view in figure 2, are distributed along the insert portion 17 of the stabiliser 1 1 from each corresponding opening 10 to the internal nozzle chamber 12. Thus the complete fluid path through the rotating nozzle according to this embodiment of the invention is from the intet 3 through the inlet chamber 4 and via the passages 26 in the stabiliser 5 to the nozzle house chamber 7, and from hence via the passages 19 to the inner nozzle chamber 12 of the nozzle member 8, and finally through the nozzle outlet 18.
Referring to figure 3, there is shown a schematic representation of a lateral cross sectional view along line AA in figure 2, shown partly to explain the function of the rotating nozzle mechanism according to the present invention. Figure 3 thus shows a cross sectional view through the nozzle house chamber 7 of the nozzle house 2 viewed towards the end face 17" of the stabiliser 11 Also indicated in figure 3 is a single of the openings 10 in the circumferentia! surface of the end portion 9 of the nozzle member 8. During operation of the rotating nozzle cleaning fluid rotates within the nozzle house chamber 7, as indicated by arrow B in figure 3, and this fluid rotation causes the end of the nozzle member longitudinally opposite the nozzle exit 18 to rotate within the nozzle house chamber 7 along the inner circumferential surface hereof, as indicated by P. During this rotation of the complete nozzle member (arrow B) the nozzle member 8 itself is forced - due to friction at point P between the corresponding portions of the nozzle member and the inner wall of the nozzle house chamber - to undergo rotation in the opposite rotational direction about its longitudinal axis XN as indicated by arrow C in figure 3. The nozzle member 8 will thus undergo rotation against the rotational direction of the fluid in the nozzle house cham- ber as it rolls on the inner circumferential surface of the nozzle house chamber. This counter rotation of the nozzle member will cause the openings 10 to impede the rotation of the nozzle member 8 around the longitudinal axis X of the nozzle house, thereby functioning as a break, which determines the maximum rotational velocity of the nozzle member 8 about the longitudinal axis X of the nozzle house 2, Thus, as described previously, the openings 10 serve the dual function initially to help starting the rotation of the nozzle member 8 and to determine the maximum rotational velocity of the rotating nozzle 8 according to the invention.
Referring to figure 4, there is shown an exploded view of a specific embodiment of the nozzle member 8 according to the invention. In this embodiment the inner wall of the end portion 9 of the nozzle member 8 is provided with a number of fluid channels 19 formed between thicker wall portions 27 of the inner wall of the end portion 9 and the outer circumferential surface of the insert portion 17 of the stabiliser 11 , when this is inserted into the end portion 9 of the nozzle member 8. These fluid channels terminate in radiaiiy inwardly extending sections 28 communicating with the second nozzle chamber 12 in the nozzle member 8.
It is understood that other specific configurations of fluid channels may also be de- vised by a person skilled in the art without deviating from the scope of the invention.
LIST OF REFERENCE NUMERALS
I, Nozzle section 2. Nozzle house
3. Inlet
4. Inlet chamber
5. Diffuser
6. O-ring 7. First nozzle chamber
8. Nozzle member
9. End portion of nozzle member
10. Opening in end portion
I 1. Stabiϋser 12. Second nozzle chamber
13. Ceramic end portion of nozzle member 13'. Rounded portion of ceramic end portion
14, Ceramic seat
14'. Rounded portion of ceramic seat 15. Fluid exit opening of nozzle house
16. Inclined inner wail of fluid exit opening
17. insert portion of stabiliser
18. Nozzle outlet
19. Fluid passage in nozzle member 20. Tangential openings in fluid passages in diffuser
21. Internal chamber of diffuser
22. Gap between diffuser and nozzle house chamber
23. Gap-forming portion of diffuser
24. Second (sealing) portion of diffuser 25. Internal shoulder of nozzle house chamber
26. Fluid communication canals in diffuser
27. Inner wall portions of second portion of nozzle member
28. Thicker (radially inwardly extending) wall portions 27 X. Longitudinal axis of nozzle house XN Longitudinal axis of nozzle member

Claims

1 , Rotating nozzie for a high-pressure deaniπg device comprising a nozzle house (2) provided with a fluid exit opening ( 15) comprising a seat ( 14) co-operating with a first end portion (13) of a nozzle member (8) comprising a nozzle chamber ( 12), such that the nozzie member (8) can undergo pivotal and rotational movement relative to a longitudinal axis (X) through the nozzle house (2), the nozzle house (2) being provided with an inlet chamber(4), from which fluid flows through a diffuser (5) into a nozzle house chamber (7), in which said nozzie member (8) is provided, characterised in that a second end portion (9) of said nozzle member (8) longitudinally opposite said first end portion (13) of the nozzle member (8) is provided with at least one opening in the circumferential surface of the nozzle member (8).
2. Rotating nozzle for a high-pressure cleaning device comprising a nozzle house (2) provided with a fluid exit opening (15) comprising a seat (14) co-operating with a first end portion (13) of a nozzle member (8) comprising a nozzie chamber (12), such that the nozzie member (8) can undergo pivotal or rotational movement relative to a longitudinal axis (X) through the nozzle house (2), the nozzle house (2) being provided with an intet chamber(4), from which fluid flows through a diffuser (5) into a nozzle house chamber (7), in which said nozzle member (8) is provided, characterised in that a second end portion (9) of said nozzle member (8) longitudinally opposite said first end portion (13) of the nozzle member (8) is provided with at least one protrusion extending from the circumferential surface of the nozzie member (8) or a combination of at least one opening (10) in the circumferential surface of the nozzle member (8) and at least one of said protrusions.
3, Rotating nozzle according to claim 1 or 2, characterised in that said nozzle member (8) at the longitudinal end opposite said first end portion (13) is provided with a stabilising member (1 1) that stabilises the rotational movement of the nozzle member (8) due to the inertia/moment of inertia of the stabilising member (11 ).
4. Rotating nozzie according to claim 3, characterised in that said stabilising member (1 1) is releasably inserted into and retained in a longitudinal end of said second end portion (9) of the nozzle member (8),
5. Rotating nozzle according to claim 3 or 4, characterised in that said openings (10) are formed at the interface between said second end portion (9) and said stabilising member (1 1), such that a portion of the opening is formed by the stabiiising member (11).
6. Rotating nozzle according to any of the preceding claims, characterised in that said one or more openings are substantially square or rectangular or circular or elliptic,
7. Rotating nozzle according to claim 1 , characterised in that said nozzle chamber (12) is in fluid communication with said nozzle house chamber (7) via one or more passages (19) in the nozzle member (8).
8, Rotating nozzle according to claim 7, characterised in that said one or more passages (19) connect said nozzle chamber (12) with said one or more openings (10) in the circumferential surface of the nozzle member (8), whereby fluid can flow from the nozzle house chamber (7) through said openings (10) and said passages (19) into the nozzle chamber (12).
9. Rotating nozzle according to claim 8, characterised in that said passages (19) are formed in the inner circumferential wall of the end portion (9) of the nozzle member (8) and defined by radially inwardly extending wall portions (27) of the end portion (9) of the nozzle member (8) and the outer circumferential surface of the insert portion (17) of the stabiliser (1 1), when the latter is inserted into the end por- tion (9).
EP06765965.6A 2006-06-30 2006-06-30 Rotating nozzle Active EP2038067B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2006/052200 WO2008004030A1 (en) 2006-06-30 2006-06-30 Rotating nozzle

Publications (2)

Publication Number Publication Date
EP2038067A1 true EP2038067A1 (en) 2009-03-25
EP2038067B1 EP2038067B1 (en) 2017-11-29

Family

ID=37461106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06765965.6A Active EP2038067B1 (en) 2006-06-30 2006-06-30 Rotating nozzle

Country Status (2)

Country Link
EP (1) EP2038067B1 (en)
WO (1) WO2008004030A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009023647A1 (en) * 2009-05-25 2010-12-02 Alfred Kärcher Gmbh & Co. Kg Rotor nozzle for a high-pressure cleaning device
CN103920608A (en) * 2013-01-10 2014-07-16 林文斌 Aluminum oxide ceramic material and lubricating method applied to rotating nozzle
EP3646953B2 (en) 2018-11-05 2026-03-25 P.A. S.p.A. Rotary jet nozzle assembly for pressure cleaning devices

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836053C1 (en) * 1988-10-22 1990-01-11 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE4013446C1 (en) 1990-04-27 1991-05-08 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
DE9108507U1 (en) * 1991-07-10 1991-11-07 Anton Jäger Montagebau, 7913 Senden Rotor nozzle for a high-pressure cleaning device
DE4129026C1 (en) 1991-08-31 1993-03-04 Alfred Kaercher Gmbh & Co, 7057 Winnenden, De
IT1294433B1 (en) 1997-05-22 1999-03-24 Interpump Group S P A ROTATING NOZZLE DISPENSER
DE10104191A1 (en) * 2001-01-31 2002-08-01 Anton Jaeger Rotor jet for high pressure water cleaning system has at least one bypass aperture between inflow aperture and jet
JP2004105790A (en) * 2002-09-13 2004-04-08 Toto Ltd Water spouting device
DE102004047586B4 (en) * 2004-09-23 2006-10-05 Alfred Kärcher Gmbh & Co. Kg cleaning head
DE502005000330D1 (en) * 2005-05-03 2007-03-08 Einhell Hans Ag Rotor nozzle for a cleaning device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008004030A1 *

Also Published As

Publication number Publication date
WO2008004030A1 (en) 2008-01-10
EP2038067B1 (en) 2017-11-29

Similar Documents

Publication Publication Date Title
US4330089A (en) Adjustable massage shower head
US5518181A (en) Variable spray or variable pulse shower head
US5328097A (en) Rotor nozzle for a high-pressure cleaning device
US6254014B1 (en) Fluid delivery apparatus
US6186414B1 (en) Fluid delivery from a spray head having a moving nozzle
CN102029229B (en) Shower head for a sanitary shower fitting
US6193169B1 (en) Rotating spray nozzle with controlled braking action
US6092739A (en) Spray head with moving nozzle
US7063274B2 (en) Cleaning nozzle
CN102448616B (en) Rotary nozzle for a high-pressure cleaning device
US20120168538A1 (en) Spin Annular Slit Spray Nozzle and Spray Apparatus Thereof
US20030209611A1 (en) Magnet-driven rotary nozzle
JPH0780361A (en) Rotating nozzle
JPH0442068B2 (en)
ITTO20000277A1 (en) SHOWER HEAD COMPLEX
JP5166279B2 (en) Device for spraying liquid
RU2006130489A (en) LIQUID SPRAY
CN113216341A (en) Intelligent closestool, spray gun and spray head
US4378195A (en) Pressure fluid motor
US5265806A (en) Nozzle for the generating of a rotating jet
WO2008004030A1 (en) Rotating nozzle
US7237726B2 (en) Paint sprayer gun
KR20150022619A (en) bubble generating apparatus
JP4737705B2 (en) Cleaning nozzle and sanitary cleaning equipment
CN114215149A (en) Intelligent toilet, intelligent toilet cover, spray washing rod of intelligent toilet cover and spray washing module

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090130

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NILFISK-ADVANCE A/S

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20150428

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NILFISK A/S

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NILFISK A/S

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20170531

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: NILFISK A/S

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 949899

Country of ref document: AT

Kind code of ref document: T

Effective date: 20171215

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602006054229

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20171129

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 949899

Country of ref document: AT

Kind code of ref document: T

Effective date: 20171129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180228

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602006054229

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20180830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180630

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20180630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180630

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180630

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180630

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180630

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20060630

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180329

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230427

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 602006054229

Country of ref document: DE

Owner name: NILFISK A/S, DK

Free format text: FORMER OWNER: NILFISK A/S, BROENDBY, DK

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20250520

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20250520

Year of fee payment: 20