EP1574262B1 - Appareil de nettoyage - Google Patents

Appareil de nettoyage Download PDF

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Publication number
EP1574262B1
EP1574262B1 EP05251429A EP05251429A EP1574262B1 EP 1574262 B1 EP1574262 B1 EP 1574262B1 EP 05251429 A EP05251429 A EP 05251429A EP 05251429 A EP05251429 A EP 05251429A EP 1574262 B1 EP1574262 B1 EP 1574262B1
Authority
EP
European Patent Office
Prior art keywords
tank
cleaning
cleaning apparatus
lid
fluid
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.)
Not-in-force
Application number
EP05251429A
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German (de)
English (en)
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EP1574262A1 (fr
Inventor
Robert Hugh Petty
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1574262A1 publication Critical patent/EP1574262A1/fr
Application granted granted Critical
Publication of EP1574262B1 publication Critical patent/EP1574262B1/fr
Not-in-force legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/006—Cabinets or cupboards specially adapted for cleaning articles by hand

Definitions

  • This invention relates to cleaning tools, and in particular to an apparatus for cleaning spray guns.
  • Paint spray guns are widely used in automotive repair shops and other industries where spray painting is carried out. These spray guns must be cleaned regularly if they are to have a reasonable service life. Furthermore, spray guns must be thoroughly cleaned within a limited time frame following use, otherwise the paint tends to solidify, making the spray gun exceedingly difficult to clean.
  • spray gun cleaning apparatus There are many examples of spray gun cleaning apparatus.
  • the most commonly used apparatus comprise a cabinet which includes a drain, a fluid supply, a fluid dispersion means and fluid collector.
  • the fluid supply and fluid collector are consumables, brought to and removed from the machine.
  • the spray gun cleaning apparatus must itself be cleaned periodically. This gives rise to a number of problems.
  • WO97/3567 describes equipment for cleaning spray guns in which an electric pump is used to convey cleaning liquid to an through spray nozzles.
  • a spray gun cleaning apparatus is also known from US 2004/0103933 .
  • the apparatus is characterised by the washer apparatus providing clean solution throughout each wash cycle.
  • US 5265633 describes an apparatus manufactured of materials capable of withstanding aggressive chemicals and used for cleaning parts of mechanisms requiring the removal of oil, grease, dirt, carbon, baked on grime and the like.
  • Nonc of the spray gun cleaning apparatus described in the above-mentioned patent information addresses the problems previously set out
  • a cleaning apparatus 1 comprises a cabinet structure 2 upon which a cleaning tank 3 is removably mounted.
  • the cabinet structure 2 further includes a thinners store 4 covered by a removable plate 5.
  • the removable plate 5 includes a handle 6 and four spaced apart key hole slots 7, which co-operate with pins mounted on the cabinet structure 2 to hold the removable plate in place.
  • Mounted on one side of the cabinet structure are compressed air services in the form of a hose connection 9 for connection to a supply of compressed air (not shown) and a compressed air gun 10 connected to a compressed air outlet 11 by means of a flexible hose 12.
  • the cleaning apparatus 1 further includes an extractor unit 8, which is described in greater detail with reference to Figures 7a to 7c .
  • the lid 13 of tank 3 is open, whereas in Figure 1b the said lid 13 is closed.
  • the lid 13 is held in the lifted position illustrated in Figure 1a by means of engagement between sides 14 of said lid 13 and a clip 15.
  • the sides 14 are fabricated from a material having at least some resilience.
  • the lid 13 is fabricated such that the in the closed position illustrated in Figure 1b the sides 14 press against sides 17 of the tank 3. As the lid is opened, the sides 14 ride over the bracket 15. When the edge 18 of the side 14 has passed over the bracket 15, the said edge 18 is aligned with an opening provided by the bracket. The lid 13 is then pulled slightly as if to close said lid 13, bringing the edge 18 into engagement with the bracket 15.
  • the switch bank 80 which includes a hand wash switch 81, a clean rinse switch 82, a timer switch 84 (see Figure 2d ), and cover plate 83 to protect the switches from unintentional switching.
  • Figures 2a to 2d illustrate the steps for removing the tank 3 from the cleaning apparatus 1.
  • FIG 2c the tank 3 is in the process of being removed from the cabinet structure 2. Removal of the tank 3 is achieved by pulling the lower front part of the tank 3 forwards and upwards so that the tank rotates about a point X where the tank 3 engages with the extractor unit 8. As the tank rotates a corner 21 of the tank slides on a track 24 of the cabinet structure 2.
  • the tank 3 is fully removed from the cabinet structure 2.
  • the tracks 24 on which the base 26 of the tank 3 slides and rests are formed from angle sections, with the leading edge of each track 24 being provided with a chamfer 25 to facilitate easy alignment of the tank 3 to the cabinet structure 2 when re-fitting the tank 3 to the cabinet structure 2.
  • a ledge 23 is provided in the upper rear part of the tank 3. This ledge 23 engages with the underside of the extractor 8 to provide an effective seal between the tank 3 and the extractor 8 when the cleaning apparatus 1 is in the configurations illustrated in Figures 2a and 2b .
  • FIG. 3a there is shown a stack of three tanks 3.
  • the tanks 3 are shown spaced apart.
  • the middle tank 3 in Figure 3a it can be seen that the wall 17 extends beyond the upper surface of lid 13 by a small distance.
  • the upper tank 3 sits on the middle tank 3, which in turn sits on the lower tank 3, the base 26 of a tank 3 sitting on the lid 13 of the tank 3 below.
  • a tank 3 stacked on top of another tank 3 is constrained from lateral movement by the extension of walls 17 beyond the upper surface of lid 13.
  • Each tank 3 that is stacked on top of another tank 3 is constrained from longitudinal movement by pins 22 which engage with the slots 19 previously described with reference to Figure 2b .
  • the slots 19 therefore fulfil dual functions. First, they form part of the lid hinge, and second they provide for the safe stacking of the tanks 3.
  • the tank 3 is illustrated in greater detail in Figures 4a to 4c .
  • the tank 3 comprises a chassis 27 strengthened by substantially U shaped members 28 disposed adjacent walls 17 of the tank 3.
  • the width of these U shaped members corresponds substantially to the width of tracks 24, and it is the lower parts of the U shaped members that rest on the said tracks.
  • the chassis 27 mounts a base plate 33 in which a drain 32 is located.
  • Located in each corner of the tank 3 is a pipe 34 having outlet nozzles 35 (numbered on one pipe only for the sake of clarity).
  • Each tube 34 is fluidly connected to a tube mount 36.
  • a perforated plate 29 rests on the tube mounts 36 such that a void exists between the perforated plate 29 and the base plate 33.
  • the perforated plate 29 is provided with edge formations 30, 31 which essentially consist of folded metal, and serve to strengthen the said plate.
  • edge formations 30, 31 which essentially consist of folded metal, and serve to strengthen the said plate.
  • a piece of filter material is place beneath the perforated plate 29, and another perforated plate is placed beneath the filter material. Fluid exiting through the nozzles 35 and 37 passes through the first perforated plate 29, through the filter material, and the second perforated plate to gather on base plate 33 to exit through drain 32.
  • drums 40, 41 are located in the fluid store 4.
  • drum 40 contains unused clean thinners fluid
  • drum 41 contains used dirty thinners fluid.
  • the used thinners fluid contained in drum 41 is recycled and rc-used for the first part of a cleaning cycle, and the clean thinners fluid from drum 40 is used for the final rinse cycle.
  • the old drums 40 and 41 are removed, with the old drum 40 that has been removed becoming the new drum 41, and a new drum 40 is installed.
  • the new drum 40 and old drum 40 (new drum 41) are each approximately half full.
  • a pipe 42 extends from the drum 40 to a shut-off valve 43, which is in fluid connection with a pipe 44 that is connected to a clean rinse nozzle (see Figure 8 ) the pipes 34.
  • a pipe 45 extends from the drum 41 to a shut-off valve 46, which is in fluid connection with a pipe 47 that is connected to the pipes 34.
  • Another pipe (not shown) extends from drain 32 to the drum 40.
  • the cleaning apparatus 1 includes a hose connection 9 for connection to a supply of compressed air (not shown) to the apparatus. Compressed air is the power source for the apparatus as will be described in greater detail with reference to Figure 9 .
  • the apparatus also includes an air gun 10 connected to a compressed air outlet 11 by means of a flexible hose 12.
  • the air gun is provided as many spray gun operators like to use compressed air to assist in cleaning their spray guns.
  • the air gun 10 includes a hook 48, which hooks onto a corresponding hook 49 protruding from the cabinet structure 2. The air gun is conveniently positioned for use by an individual using the cleaning apparatus 1.
  • Figure 7a to 7c illustrate the extractor unit 8 which comprises a housing 50 on top of which is mounted a chamber 51 having an outlet 52.
  • the housing 50 lies above the rear part of the cleaning tank 3.
  • the housing 50 includes a pair of spaced apart apertures 57 which receive tubular elements extending downwardly from the housing 50. Seals 61 ensure that air extracted from the tank 3 does not leak into the housing 50.
  • Extraction of air from the tank 3 is achieved by means of an air jet 60.
  • the air jet 60 is connected to the supply of compressed air by means of pipe 54.
  • the air jet 60 functions as a venturi, creating a region of high velocity and low pressure air at the top of the chamber 51. This has the effect of drawing air in the tank through the chamber 51 and out of the outlet 52.
  • the housing 50 includes an element 58 which mounts a cut-off switch 59.
  • the cut-off switch 59 is on when the lid 13 is up, because any contamination can escape to atmosphere, and off when the lid 13 is down.
  • the switch 59 is turned on and off by engagement/disengagement of a part of the lid 13 with the switch 59.
  • the cleaning fluid circuit comprises a drum 40 containing clean thinners fluid and a drum 41 containing recycled thinners fluid.
  • Inlets of two pumps 71 and 73 are connected by pipes 72 and 74 respectively to the drum 41, each pipe 72, 74 having a filter 70 at the drum end.
  • Each pump 71, 73 has an outlet connected to a nozzle located in the tank 3.
  • the pump 71 is connected by a pipe 75 to connectors 76 which attach to pipes 34 to deliver fluid to nozzles 35 and 37.
  • the outlet of pump 73 is connected to a hand wash nozzle 77, which, in use, is located in the tank 3 towards the rear thereof.
  • the drum 40 containing clean thinners fluid is connected by a pipe 42 to a clean rinse nozzle 78, which, in use, is located in the tank 3 towards the rear thereof. Clean thinners fluid is drawn from the drum 40 to the nozzle 78 due to a partial vacuum created in a chamber in the clean rinse block by the admission of air through a jet in the same clean rinse block when the tank lid is open and the clean rinse switch 82 is operated.
  • Outlet 32 of the tank 3 is fluidly connected to the drum 41 by means of a shut off valve 79.
  • the shut off valve 79 is open so that spent cleaning fluid that has passed through the filter elements in the base of the tank 3 return to the thinners fluid drum 41.
  • one cleaning operation involves soaking items placed in the tank 3. In order to run this cycle the valve 79 must be closed.
  • the pressurised air system includes: a compressed air supply connection 9, the pumps 71 and 73, both of which are powered by compressed air, an on/off valve 85, an air filter 86, an air gun 10, a timer valve 84, a hand wash switch 81, a clean rinse switch 82, an pressure regulator valves 87 and 88.
  • the on/off valve 85 is opened and air flows through the filter 86 to supply the air gun 10 and the switch 59.
  • the switch 59 is open and compressed air flows to the nozzle 60 and to the hand wash switch 81. If the hand wash switch 81 is opened, air flows via pressure regulator 87 to the pump 73, thereby pumping thinners fluid from the drum 41 to the hand wash outlet nozzle 77.
  • the lid open and the switch 59 open compressed air is delivered to the clean rinse switch 82.
  • the clean rinse switch 82 is opened, air is allowed to pass to the clean rinse outlet 78 and within this outlet through a jet and into a chamber. A partial vacuum is created in the chamber drawing thinners fluid from the clean thinners drum 40 into the chamber, where it is atomised and forced out of the clean rinse outlet 78.
  • shut-off valve 79 To operate in "soak” mode, the operator closes shut-off valve 79. Any of the “automatic”, “manual wash”, and “clean rinse modes” can be used in "soak” mode.
  • the cleaning apparatus of the invention is particularly advantageous as it allows the apparatus to be cleaned away from the place where the apparatus is located. This is achieved by having a tank 3 which is detachable from the rest of the machine.
  • This provides a number of advantages: First, the apparatus downtime is reduced from around 30 to 45 minutes to 5 to 10 minutes, resulting in less down time for spray gun operators. Second, because the time taken to service the cleaning apparatus is only 5 to 10 minutes compared to around 30 to 45 minutes for known apparatus, a service engineer can service many more machines in a day. Third, the actual operation of cleaning a tank does not require a person having the same skill level as a service engineer. As such the cost of cleaning can be reduced by using labour having a skill level appropriate for the task in hand.
  • a simple stacking system is provided. This is beneficial for both safe transportation and storage of the tanks.
  • Another embodiment of the invention provides a convenient means for holding the tank lid in its open position.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
  • Confectionery (AREA)
  • Detergent Compositions (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Claims (20)

  1. Appareil de nettoyage de pièces (1) destiné à nettoyer du matériel de peinture à pulvériser, caractérisé en ce que l'appareil (1) comporte une structure (2) et une cuve de nettoyage (3) montée de manière amovible dans ladite structure (2), dans lequel le réservoir (3) comprend au moins une sortie de fluide pouvant être raccordée à au moins une alimentation de fluide, un support perforé (29) arrangé pour supporter du matériel de peinture à pulvériser dans la cuve (3) au cours du nettoyage, un dispositif de vidange (32) situé sous le support perforé (29) pouvant être raccordé à un réservoir de fluide, et au moins une sortie comportant au moins une buse (35), la buse (35) étant montée dans la cuve (3) de telle manière à diriger le fluide de nettoyage vers des objets devant être nettoyés dans la cuve (3), l'appareil comprenant par ailleurs un système d'extraction d'air (8).
  2. Appareil de nettoyage selon la revendication 1, dans lequel la cuve (3) comprend un couvercle (13) mobile entre une position ouverte et une position fermée.
  3. Appareil de nettoyage selon la revendication 2, dans lequel des moyens de montage (19, 22) permettent de monter de manière amovible le couvercle (13) sur la cuve (3).
  4. Appareil de nettoyage selon la revendication 3, dans lequel le couvercle (13) est monté de manière amovible sur la cuve (3) par des moyens de montage (19, 22), lesdits moyens de montage mettant en oeuvre une articulation entre la cuve (3) et le couvercle (13).
  5. Appareil de nettoyage selon la revendication 3 ou la revendication 4, dans lequel les moyens de montage comportent au moins une fente allongée (19) et au moins une goupille (20).
  6. Appareil de nettoyage selon la revendication 5, dans lequel la cuve (3) comporte deux fentes allongées (19), une de chaque côté de celle-ci, et le couvercle (13) est muni de deux goupilles (20), chacune des deux goupilles étant en contact avec l'une quelconque respective des fentes.
  7. Appareil de nettoyage selon l'une quelconque des revendications précédentes, dans lequel ladite structure (2) comprend au moins un chemin de roulement (24) sur lequel la cuve coulisse.
  8. Appareil de nettoyage selon l'une quelconque des revendications précédentes, dans lequel la cuve (3) comprend une portion inclinée pouvant entrer en contact avec le ou chaque chemin de roulement (24).
  9. Appareil de nettoyage selon la revendication 8, dans lequel, le couvercle (13) étant dans sa position fermée, le système d'extraction (8) est allumé, et, le couvercle (13) étant dans sa position ouverte, le système d'extraction (8) est éteint.
  10. Appareil de nettoyage selon l'une quelconque des revendications précédentes, dans lequel l'une des cuves amovibles (3) est empilable sur la partie supérieure d'une autre cuve amovible (3).
  11. Cuve de nettoyage selon la revendication 10, dans lequel la portion inférieure de chaque cuve (3) est munie d'une partie d'un moyen d'assujettissement (22), et la portion supérieure de chaque cuve est munie d'une deuxième partie d'un moyen d'assujettissement (19), et quand une cuve (3) est empilée sur la partie supérieure d'une autre, les deux parties du moyen d'assujettissement (19, 22) entrent en contact et tout mouvement respectif dans au moins un plan entre deux cuves empilées (1) est dans une large mesure prévenu.
  12. Cuve de nettoyage selon la revendication 11, dans lequel une partie du moyen d'assujettissement est une partie d'un accouplement mâle/femelle et l'autre partie est l'autre partie d'un accouplement mâle/femelle.
  13. Cuve de nettoyage selon la revendication 12, dans lequel la partie mâle est une goupille (22) et la partie femelle est une fente (19).
  14. Appareil de nettoyage selon l'une quelconque des revendications précédentes, dans lequel le fluide de nettoyage est constitué de diluants.
  15. Appareil de nettoyage selon l'une quelconque des revendications précédentes, et comportant deux réceptacles de fluide de nettoyage amovibles (41, 42).
  16. Appareil de nettoyage selon la revendication 15, dans lequel le fluide utilisé dans l'appareil est recyclé vers l'un des réceptacles.
  17. Appareil de nettoyage selon l'une quelconque des revendications précédentes, comportant par ailleurs au moins une pompe (71, 73).
  18. Appareil de nettoyage selon la revendication 17, dans lequel ladite au moins une pompe (71, 73) est alimentée par de l'air comprimé.
  19. Appareil de nettoyage selon l'une quelconque des revendications 2 à 18, comportant par ailleurs un moyen permettant de tenir le couvercle dans ladite position ouverte comportant au moins une fente (15) et au moins une portion de bord (14) dudit couvercle (13), dans lequel la ou chaque portion de bord (14) est élastique, et au cours du mouvement allant de la position fermée à la position ouverte, la portion de bord (14) chevauche la fente (15), à des fins d'alignement sur celle-ci.
  20. Procédé de nettoyage d'un objet comportant les étapes consistant à :
    a. placer l'objet dans la cuve d'un appareil selon l'une quelconque des revendications 1 à 19 ;
    b. sélectionner un cycle de nettoyage;
    c. retirer l'objet.
EP05251429A 2004-03-09 2005-03-09 Appareil de nettoyage Not-in-force EP1574262B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0405337.7A GB0405337D0 (en) 2004-03-09 2004-03-09 Paint spraygun cleaner
GB0405337 2004-03-09

Publications (2)

Publication Number Publication Date
EP1574262A1 EP1574262A1 (fr) 2005-09-14
EP1574262B1 true EP1574262B1 (fr) 2008-07-30

Family

ID=32117363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05251429A Not-in-force EP1574262B1 (fr) 2004-03-09 2005-03-09 Appareil de nettoyage

Country Status (4)

Country Link
EP (1) EP1574262B1 (fr)
AT (1) ATE402765T1 (fr)
DE (1) DE602005008492D1 (fr)
GB (2) GB0405337D0 (fr)

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US8925836B2 (en) 2008-10-29 2015-01-06 Sata Gmbh & Co. Kg Gravity cup for a paint sprayer
USD740393S1 (en) 2013-09-27 2015-10-06 Sata Gmbh & Co. Kg Paint spray gun
US9327301B2 (en) 2008-03-12 2016-05-03 Jeffrey D. Fox Disposable spray gun cartridge
USD758537S1 (en) 2014-07-31 2016-06-07 Sata Gmbh & Co. Kg Paint spray gun rear portion
US9409197B2 (en) 2013-12-18 2016-08-09 Sata Gmbh & Co. Kg Air nozzle closure for a spray gun
USD768820S1 (en) 2014-09-03 2016-10-11 Sata Gmbh & Co. Kg Paint spray gun with pattern
USD770593S1 (en) 2014-07-31 2016-11-01 Sata Gmbh & Co. Kg Paint spray gun
US9533317B2 (en) 2009-07-08 2017-01-03 Sata Gmbh & Co. Kg Paint spray gun

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DE112018007865A5 (de) 2018-08-01 2021-07-15 Sata Gmbh & Co. Kg Düsensatz für eine Spritzpistole, Spritzpistolensystem, Verfahren zum Ausgestalten eines Düsen-Moduls, Verfahren zur Auswahl eines Düsen-Moduls aus einem Düsensatz für eine Lackieraufgabe, Auswahlsystem und Computerprogrammprodukt
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DE102020123769A1 (de) 2020-09-11 2022-03-17 Sata Gmbh & Co. Kg Dichtelement zum Abdichten eines Übergangs zwischen einem Grundkörper einer Spritzpistole und einem Anbauteil einer Spritzpistole, Anbauteil, insbesondere Farbdüsenanordnung, für eine Spritzpistole und Spritzpistole, insbesondere Farbspritzpistole

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Publication number Priority date Publication date Assignee Title
US9327301B2 (en) 2008-03-12 2016-05-03 Jeffrey D. Fox Disposable spray gun cartridge
US8925836B2 (en) 2008-10-29 2015-01-06 Sata Gmbh & Co. Kg Gravity cup for a paint sprayer
US9533317B2 (en) 2009-07-08 2017-01-03 Sata Gmbh & Co. Kg Paint spray gun
USD740393S1 (en) 2013-09-27 2015-10-06 Sata Gmbh & Co. Kg Paint spray gun
US9409197B2 (en) 2013-12-18 2016-08-09 Sata Gmbh & Co. Kg Air nozzle closure for a spray gun
USD758537S1 (en) 2014-07-31 2016-06-07 Sata Gmbh & Co. Kg Paint spray gun rear portion
USD770593S1 (en) 2014-07-31 2016-11-01 Sata Gmbh & Co. Kg Paint spray gun
USD798419S1 (en) 2014-07-31 2017-09-26 Sata Gmbh & Co. Kg Paint spray gun
USD768820S1 (en) 2014-09-03 2016-10-11 Sata Gmbh & Co. Kg Paint spray gun with pattern

Also Published As

Publication number Publication date
GB0504785D0 (en) 2005-04-13
GB0405337D0 (en) 2004-04-21
GB2411824B (en) 2007-08-01
ATE402765T1 (de) 2008-08-15
EP1574262A1 (fr) 2005-09-14
DE602005008492D1 (de) 2008-09-11
GB2411824A (en) 2005-09-14

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