EP0650767B1 - Pistolet de pulvérisation de liquide à buses multiples - Google Patents

Pistolet de pulvérisation de liquide à buses multiples Download PDF

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Publication number
EP0650767B1
EP0650767B1 EP94830513A EP94830513A EP0650767B1 EP 0650767 B1 EP0650767 B1 EP 0650767B1 EP 94830513 A EP94830513 A EP 94830513A EP 94830513 A EP94830513 A EP 94830513A EP 0650767 B1 EP0650767 B1 EP 0650767B1
Authority
EP
European Patent Office
Prior art keywords
liquid
spray
cylinder
trigger
block
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.)
Expired - Lifetime
Application number
EP94830513A
Other languages
German (de)
English (en)
Other versions
EP0650767A1 (fr
Inventor
Vincenzo Campagna
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.)
CAMPI CENTRO APPLICAZIONE MODERNI PRODOTTI INDUSTR
Original Assignee
CAMPI Centro Applicazione Moderni Prodotti Industriali Srl
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 CAMPI Centro Applicazione Moderni Prodotti Industriali Srl filed Critical CAMPI Centro Applicazione Moderni Prodotti Industriali Srl
Publication of EP0650767A1 publication Critical patent/EP0650767A1/fr
Application granted granted Critical
Publication of EP0650767B1 publication Critical patent/EP0650767B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1009—Piston pumps actuated by a lever
    • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1081—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping
    • B05B11/1084—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping each liquid or other fluent material being pumped by a separate pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1087—Combination of liquid and air pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2464—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device a liquid being fed by mechanical pumping from the container to the nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2472—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device comprising several containers

Definitions

  • the present invention relates to a multiple nozzle, liquid spray-gun, particularly useful for cleaning surfaces.
  • liquid dispensing pumps commonly known as spray-guns (the term “spray-gun” being used hereinafter as a synonym for "liquid dispensing pump”) constitute one of the most convenient, effective and safe means of cleaning surfaces of various kinds; the said spray-guns are used to dispense liquids which attack the particles of dirt on the surfaces to be cleaned.
  • These spray-guns consist basically of a spray-head attached (for example by screwing) to a tank containing the liquid to be sprayed.
  • the spray-head has a discharge nozzle and internally defines a pumping chamber which enables the liquid to be drawn from the tank and channelled towards the discharge nozzle.
  • the flow of the liquid within the chamber is controlled by the user through an external lever or trigger which operates on the part of the pumping chamber located inside the spray-head and designed to control the operation of nonreturn valves mounted by the discharge nozzle and by the pumping chamber.
  • the user To start operating the spray-gun, the user must alternately pull and release the trigger several times in such a way as to increase the pressure in the pumping chamber, thus opening the valve at the tank end to draw liquid from the tank itself, and closing the valve at the discharge nozzle so as to fill the liquid drawn from the tank into a prechamber (either rigid or flexible) adjacent to the nozzle itself.
  • the valve at the nozzle opens, allowing some of the liquid to pass from the prechamber to the nozzle so that, when the trigger is next pulled, the valve closes again and the liquid is discharged to the atmosphere through the nozzle.
  • the apparatus in form of a spray-gun operated by compressed air, comprises a support element, to which is attached a plurality of tanks containing the colours, and a plurality of nozzles corresponding to the tanks, attached above the support element and communicating with the respective tank.
  • the selected tank and nozzle are connected with the source of compressed air and the corresponding colour is therefore sprayed.
  • the object of the present invention is to eliminate the disadvantages mentioned above by providing a multiple nozzle, liquid spray-gun, comprising several pumps in a single casing, which is compact and manageable and which allows different cleaning components to be selected easily and safely, in a manner that conforms with the health standards of the trade.
  • the liquid spray-gun consists of the following basic parts: a handle 3, a revolving element or block 6, a liquid dispensing unit 8, compressive means 15, spring means 16 and valve means 17.
  • the handle 3 comprises a trigger 4, pivoted on the handle itself, at point C, and having an active portion 4a inside the handle 3 itself and an external portion 4b that may be operated manually; the active portion 4a consists of a horizontal rod 4c hinged to the upper end of the trigger 4.
  • the handle 3 also has a tubular extension 5 into which the aforesaid revolving block 6 fits.
  • the block 6, also tubular, is rotatably coupled to the extension 5 through appropriate means 7, which may, for example, be the ends of these two elements themselves, with an undercut 18 and a circumferential lip 19 forming a sliding fit which enables the two elements to rotate relative to each other.
  • appropriate means 7 may, for example, be the ends of these two elements themselves, with an undercut 18 and a circumferential lip 19 forming a sliding fit which enables the two elements to rotate relative to each other.
  • An anti-friction means (bearing or other) may also be provided to improve the sliding fit between the extension 5 and the block 6.
  • the outer edge of the revolving block 6 may have hand gripping means 20 designed to allow the block to be revolved about its longitudinal axis X and consisting, for example, of a crown element 21c forming an integral part of the block itself.
  • the revolving block 6 mounts the aforesaid liquid dispensing unit 8 which in turn comprises: a cover 9 which closes the end of the block 6 and a series of nozzles 1 which, in the embodiment being described, are four in number but which may be more or less than this according to the cleaning requirements which the spray-gun is to be used for.
  • a cover 9 which closes the end of the block 6
  • a series of nozzles 1 which, in the embodiment being described, are four in number but which may be more or less than this according to the cleaning requirements which the spray-gun is to be used for.
  • Each of the nozzles 1 is connected to a corresponding dispensing cylinder 10, which, when necessary, by turning the revolving block 6, may be lined up with the active portion of the trigger 4.
  • the aforesaid cover 9 is nonadjustably fixed (by gluing or welding) to the revolving block 6 and mounts the nozzles 1 which are interchangeable (with rapid fittings or screw-on connections with sealing rings, not illustrated), each nozzle being set in such a way as to be off centre with respect to the corresponding cylinder 10.
  • the revolving block 6 also mounts a dispensing unit for the liquids to be sprayed comprising a first tube 12 and a second tube 13; the first tube 12 is rigid and, there being one for each cylinder 10, connects the cylinder to the corresponding tube 13, which is flexible and which, being connected to a corresponding tank 14, feeds the liquid to be sprayed.
  • each tank 14 is separate from the spray-gun and may be carried by the user secured to his belt or to a special work belt E (not illustrated in detail).
  • the liquid dispensing unit 8 consists of a cylindrical sector 26 located in the middle of the revolving block 6 and associated to the first tubes 12, each of which has a channel 27 feeding into the corresponding cylinder 10.
  • Each of the said channels 27 is open (for cleaning purposes) at the end leading out through the outer surface of the cover 9 and may be closed using stoppers 40.
  • Each of the second, flexible tubes 13 is coaxially connected to the corresponding first, rigid tube 12 and travels along the entire length of handle 3 and feeds out of the bottom end of the latter.
  • the handle 3 is equipped with a double-ended fitting 41 for each tube 13 where the external section of tube 13 connected to the related tank 14 may be attached.
  • the numeral 15 indicates compressive means located between the active end of the trigger 14 and the corresponding dispensing cylinder 10, the said compressive means revolving together with the cylinder and being designed, when active, to force liquid out of the related cylinder 10 towards the corresponding nozzle 1.
  • the said compressive means 15 consist, for each cylinder 10, of a chamber 21 housing the stem 22 of a plunger 23; one end of the said plunger is equipped with a plate 24 which lines up with the aforesaid active portion 4a of the trigger 4.
  • the stem 22 has a second plate 25 integral with it which travels inside the corresponding cylinder 10 and which is designed to force the liquid outwards.
  • a spring 16 placed around the stem 22 and retained at one end by the first plate 24 and at the other end by an inner surface of the chamber 21 itself; the said springs 16 operate on the compressive means 15 to determine a force counteropposing the force of the liquid discharge pressure in such a way as to cause the trigger 4 to move back to its inactive position ready to be activated again (as described in more detail below).
  • valve means located at each nozzle 1 and at the second tubes 13, enabling the liquid to be drawn from the tanks 14 into the cylinders 10 when the compressive means 15 are operated.
  • the said valve means 17 consist of pairs of nonreturn valves 17a and 17b (the number of valve pairs depending on the number of chambers the spray-gun has), one valve being located at the corresponding nozzle 1 (at the point where the latter is connected with the cylinder 10) and the other at the point on the corresponding second tube 13 where the latter feeds out of the handle 3, that is to say, on the double-end fitting 41 on the handle itself.
  • a spray-gun constructed in the manner described above, assuming a configuration with four nozzles 1 and with the tanks 14 full of different liquids already connected to the related tubes, may be used as follows.
  • the user By turning the crown 21c, the user selects the cylinder 10 to be set to spraying position, the crown itself having appropriate reference marks on it, if necessary.
  • the user pulls the trigger 4, which was previously returned to its inactive position by the action of said springs 16, thus creating vacuum, thanks to nonreturn valves 17a and 17b, which causes the liquid to rise through the second tube 13, the first tube 12 and the channel 27 and to fill the corresponding cylinder 10 (see arrow F in Fig. 1).
  • valve 17b of the nozzle 1 When the cylinder 10 is full, that is, when a balance of pressure has been reached, the liquid starts being pressed against valve 17b of the nozzle 1, the valve opens and allows the liquid to be discharged in the form of a jet.
  • the jet is created by the trigger 4 which presses on the first plate 24 of plunger 23 which in turn causes the second plate 25 to move into the cylinder 10 creating a high pressure that forces the liquid out of the cylinder (in Fig. 1, this position is shown with a broken line).
  • the spring 16 returns the trigger quickly to its starting position so that the spraying cycle may be repeated (in Fig. 1, this position is shown with a continuous line).
  • the tanks 14 may be fitted to the user's belt whilst if there are just a few different liquids (two or three), they may be attached directly to the bottom of the handle 3 (as shown by the broken line in Fig. 1).
  • the spray jet is improved as follows: the revolving block 6 is fitted with an additional external tube 100 for each cylinder 10 (four in the case described above), to connect the chamber 21 housing the plunger 23 with the discharge chamber 1a of the corresponding nozzle 1 located after the aforesaid valve 17a.
  • the said tube 100 allows the air generated by the forward motion of the stem 22 of plunger 23 during the compression stage, since each plate 24 is equipped with a ring 101 which seals chamber 16, to pass into the aforesaid chamber 1a in such a way as to exert a greater discharge pressure on the liquid, irrespective of the position of the valve 17a.
  • the tube 100 not only accelerates the discharge of the liquid but also guarantees that the liquid will be discharged if the valve 17a temporarily fails to operate.
  • the spray-gun disclosed by the present invention accomplishes the aforestated objects in that it the gun and tank assembly is extremely easy to handle; in addition, the internal structure of the spray-gun is simple and economical and at the same time guarantees efficient operation and safety thanks to the separate, sealed tubes which make it impossible for different liquids to mix.
  • the crown element makes for fast easy changing from one cylinder to another, and may, if necessary, have appropriate graphic symbols on it and be used in combination with stop devices made between the revolving block and the tubular extension of the handle in order to facilitate selection of the tank corresponding to the liquid to be sprayed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)

Claims (8)

  1. Pistolet de pulvérisation de liquide à buses multiples (1) comprenant:
    une poignée (3) avec un levier ou une détente (4) ayant une portion active (4a) à l'intérieur de la poignée (3) elle-même et une portion externe (4b) pouvant être actionnée à la main, et un prolongement tubulaire (5);
    un élément ou bloc tournant tubulaire (6) associé au prolongement tubulaire (5) susmentionné par l'intermédiaire de moyens (7) appropriés et de façon à pouvoir tourner; ledit bloc tournant (6) présentant, au niveau de son extrémité libre, une unité de distribution de liquide (8), caractérisé en ce que ladite unité de distribution de liquide (8) comprend un bouchon (9) destiné à fermer ladite extrémité libre et au moins deux buses (1) reliées aux vérins de distribution (10) correspondants; chacun des vérins (10) pouvant être alignés avec l'extrémité active intérieure de la détente (4) en tournant ledit bloc tournant (6); ce même bloc tournant (6) contenant une unité de distribution de liquide qui comprend, pour chacun des vérins de distribution (10) en question, un premier conduit (12) raccordant le vérin (10) relatif à un deuxième conduit d'alimentation en liquide correspondant (13) qui est raccordé à un réservoir (14) duquel il soutire le liquide à pulvériser;
    des moyens de compression (15) étant situés entre l'extrémité active de ladite détente (4) et le vérin (10) correspondant, pouvant tourner avec ce dernier et destinés à forcer la sortie du liquide du vérin (10) concerné vers la buse (1) correspondante quand l'action de la détente (4) en question les actionnent;
    des moyens à ressort (16) placés entre les moyens de compression (15) et chacun des vérins (10) et agissant sur ces mêmes moyens de compression de façon à définir une force opposée à la force de la pression d'évacuation du liquide et à ramener les moyens de compression (15) dans leur position de repos;
    des moyens à vannes (17) placés au niveau de chaque buse (1) et des deuxièmes conduits (13), permettant le soutirage du liquide des réservoirs (14) dans les vérins (10) quand les moyens de compression (15) sont actionnés et retournent dans leur position de repos par l'action des moyens à ressort (16).
  2. Pistolet de pulvérisation selon la revendication 1, caractérisé en ce que lesdits moyens d'association (7) sont constitués du prolongement tubulaire (5) de la poignée (3) et de l'extrémité tubulaire du bloc tournant (6), présentant respectivement une contre-dépouille (18) et une lèvre de circonférence (19) formant une fixation coulissante qui permet à ces mêmes deux éléments de tourner l'un par rapport à l'autre; le bord extérieur du bloc tournant (6) en question étant doté de moyens de prise manuelle (20) permettant au bloc de tourner autour de son axe longitudinal (X).
  3. Pistolet de pulvérisation selon la revendication 1, caractérisé en ce que lesdits moyens de compression (15) consistent, pour chaque vérin (10), en une chambre (21) recevant la tige (22) d'un plongeur (23), l'une des extrémités de ce dernier étant dotée d'une plaque (24) qui est alignée avec la portion active (4a) susmentionnée de la détente (4) et l'autre extrémité étant alignée avec une plaque (25) qui lui est solidaire, qui se déplace à l'intérieur du vérin correspondant (10) et qui est destinée à forcer la sortie du liquide; chaque chambre (21) recevant également un ressort (16) emboíté sur la tige (22), définissant lesdits moyens à ressort (16) et retenu à une extrémité par la première plaque (24) et par une face intérieure de la chambre (21) elle-même à l'autre extrémité.
  4. Pistolet de pulvérisation selon la revendication 1, caractérisé en ce que l'unité de distribution du liquide (8) comprend une section cylindrique (26) placée au centre du bloc tournant (6) et solidaire des premiers conduits rigides (12), présentant chacun un canal (27) alimentant le vérin (10) correspondant.
  5. Pistolet de pulvérisation selon la revendication 1, caractérisé en ce que ledit deuxième conduit (13) est flexible et se prolonge sur toute la longueur de la poignée (3) et débouche à l'extérieur de cette dernière au niveau de son extrémité inférieure.
  6. Pistolet de pulvérisation selon la revendication 1, caractérisé en ce que les buses (1) sont montées sur ledit bouchon (9) qui ferme le bloc tournant (6) de façon à être décentrées par rapport aux vérins (10) correspondants; lesdites buses (1) étant du type à attache rapide.
  7. Pistolet de pulvérisation selon la revendication 1, caractérisé en ce que lesdits moyens à vannes (17) consistent en paires de vannes de non-retour (17a et 17b), l'une étant placée au niveau de la buse (1) correspondante et l'autre étant placée sur le deuxième conduit correspondant (13), là où ce dernier débouche de la poignée (3).
  8. Pistolet de pulvérisation selon la revendication 3, caractérisé en ce que chacune des buses (1) susmentionnées est dotée d'un conduit (100) extérieur au bloc tournant (6) et reliant la chambre (21) qui reçoit le plongeur (23) avec la chambre d'évacuation du liquide (1a) associée à la buse (1) correspondante ; ladite chambre (21) étant dotée de moyens d'étanchéité (101) au moins au niveau de la première plaque (24) susmentionnée.
EP94830513A 1993-10-29 1994-10-28 Pistolet de pulvérisation de liquide à buses multiples Expired - Lifetime EP0650767B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITBO893430 1993-10-29
ITBO930430 1993-10-29
IT93BO000430A IT1264726B1 (it) 1993-10-29 1993-10-29 Pistola erogatrice di liquidi ad ugelli multipli.

Publications (2)

Publication Number Publication Date
EP0650767A1 EP0650767A1 (fr) 1995-05-03
EP0650767B1 true EP0650767B1 (fr) 1998-06-24

Family

ID=11339287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94830513A Expired - Lifetime EP0650767B1 (fr) 1993-10-29 1994-10-28 Pistolet de pulvérisation de liquide à buses multiples

Country Status (3)

Country Link
EP (1) EP0650767B1 (fr)
DE (1) DE69411245T2 (fr)
IT (1) IT1264726B1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2733800B1 (fr) * 1995-05-04 1997-08-01 Roche Vincent Dispositif rotatif a plusieurs pompes verticales et a commande de pression unique pour emission de fluides differents par un seul orifice apparent
FR2902088B1 (fr) * 2006-06-12 2008-08-15 Oreal Dispositif de distribution
ITBO20120211A1 (it) * 2012-04-17 2013-10-18 Ndustriali S R L Erogatore a spruzzo di prodotti liquidi
CN107583777A (zh) * 2017-10-26 2018-01-16 德清富源涂装设备有限公司 手动喷涂设备
CN111013847B (zh) * 2019-12-10 2021-01-01 江苏浪势塑粉有限公司 一种飞溅率低的涂料喷涂机的喷枪装置
ES2954131A1 (es) * 2021-11-24 2023-11-20 Valverde David Pagan Pulverizador multicompartimento

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR958376A (fr) * 1950-03-08
BE546389A (fr) *
DE3009759A1 (de) * 1980-02-20 1982-08-19 Gerhart 3000 Hannover Daubner Mehrkammer-handspray-dose mit mehrfachspruehkopf
DE3011634A1 (de) * 1980-03-26 1981-10-08 Gerhart 3000 Hannover Daubner Mehrkammer handspraydose mit verschliessbaren duesen, oder aushebbaren drehschieber
IT8919208A0 (it) * 1989-01-26 1989-01-26 Ezzovico Lugano Svizzera Flacone con doppio dispositivo di erogazione di liquidi o paste.
JP2890449B2 (ja) * 1989-04-07 1999-05-17 東ソー株式会社 試薬分注装置
US5152431A (en) * 1991-06-21 1992-10-06 Sterling Drug, Inc. Pump apparatus for dispensing a selected one of a plurality of liquids

Also Published As

Publication number Publication date
EP0650767A1 (fr) 1995-05-03
IT1264726B1 (it) 1996-10-04
DE69411245T2 (de) 1998-10-29
DE69411245D1 (de) 1998-07-30
ITBO930430A0 (it) 1993-10-29
ITBO930430A1 (it) 1995-04-29

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