EP1741493A1 - Vorratsbecher einer Sprühpistole mit flüssigkeitsdichter Belüftung - Google Patents

Vorratsbecher einer Sprühpistole mit flüssigkeitsdichter Belüftung Download PDF

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Publication number
EP1741493A1
EP1741493A1 EP05076539A EP05076539A EP1741493A1 EP 1741493 A1 EP1741493 A1 EP 1741493A1 EP 05076539 A EP05076539 A EP 05076539A EP 05076539 A EP05076539 A EP 05076539A EP 1741493 A1 EP1741493 A1 EP 1741493A1
Authority
EP
European Patent Office
Prior art keywords
spray gun
liquid
container
base part
reservoir
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.)
Withdrawn
Application number
EP05076539A
Other languages
English (en)
French (fr)
Inventor
Alain Marcel Wambeke
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.)
Omniform NV SA
Original Assignee
Omniform NV SA
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 Omniform NV SA filed Critical Omniform NV SA
Priority to EP05076539A priority Critical patent/EP1741493A1/de
Priority to PCT/EP2006/004860 priority patent/WO2007003245A1/en
Publication of EP1741493A1 publication Critical patent/EP1741493A1/de
Withdrawn legal-status Critical Current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
    • B05B7/24—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
    • B05B7/2478—Gun with a container which, in normal use, is located above the gun
    • 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
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2408—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle characterised by the container or its attachment means to the spray apparatus
    • 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
    • B05B15/40—Filters located upstream of the spraying outlets

Definitions

  • the present invention relates to a spray gun reservoir. More in particular, the present invention relates to a liquid reservoir for mounting on a spray gun, a spray gun assembly provided with a liquid reservoir, and a method of providing such an assembly.
  • Spray guns having reservoirs for containing the liquid to be sprayed are well known. Such reservoirs are typically mounted on top of the spray gun using a hollow coupling clement through which the liquid can flow. The position on top of the spray gun ensures that gravity assists the flow of the liquid.
  • the liquid such as paint or herbicide
  • the liquid is typically first mixed in a blending cup or other suitable container before being poured into the spray gun reservoir.
  • the reservoir is closed by a lid and is then mounted on the spray gun.
  • the amount of liquid in the reservoir steadily decreases, causing a lowered air pressure (vacuum) in the reservoir which would hinder the flow of liquid.
  • the known reservoir is provided with a vent opening or air hole which allows air to be drawn from the outside.
  • the spray gun and the reservoir have to be cleansed.
  • a disposable liner in the reservoir.
  • the liner which contains the liquid, prevents the liquid coming into contact with the reservoir.
  • the present invention provides a liquid reservoir assembly for a spray gun, the assembly comprising a top part and a base part, wherein the base part has an opening for passing the liquid to the spray gun, characterised in that the top part has closed top and wall surfaces, and in that the base part and the top part provide a liquid-tight seal but not an air-tight seal.
  • the reservoir assembly can be held in any position, including upside-down, without spilling fluid. It will be understood that the base part will have no openings other than the one (or ones) for passing the liquid to the spray gun.
  • the reservoir of the present invention air is supplied to the interior through "leakage" between the reservoir parts and no vent opening is necessary.
  • the reservoir assembly (with or without the spray gun attached) may be held in any position without spilling liquid.
  • the absence of a vent opening or vent mechanism lowers the cost of the reservoir.
  • one of the parts may be provided with a substantially U-shaped groove while the other part (preferably the top part) is provided with a substantially U-shaped rim which fits into the groove.
  • Such sealing arrangements are well known in the art. No additional components are necessary, provided the substantially U-shaped elements provide a good and close fit.
  • the top part may be provided with the substantially U-shaped groove while the base part is provided with the substantially U-shaped rim.
  • the parts may be provided with mating screw threads which allow a minute passage of air.
  • the top part of the liquid reservoir of the present invention is preferably constituted by a container while the base part is constituted by a lid for the container. That is, the top part has a circumferentially closed wall surface extending in a longitudinal direction from an end surface, thus defining an interior of the container. This allows the top part to be used as a mixing (blending) cup for mixing paint or other substances prior to spraying.
  • the reservoir is then closed off by placing the base part (that is, the lid) on the top part (that is, the container), and is turned upside down for mounting on the spray gun.
  • the base part it is also possible for the base part to form a container, as disclosed in WO 98/32539 mentioned above.
  • the container preferably has a substantially circular cross-section, although other cross-sections are also possible, for example substantially rectangular (e.g. square), oval, hexagonal or octagonal.
  • the top part is preferably wider at its opening than at its closed end, although this is not essential.
  • the base part is funnel-shaped. This assists the flow of the liquid, in particular when the reservoir is almost empty. In alternative embodiments, however, the base part may be substantially planar.
  • the liquid reservoir assembly of the present invention may further comprise a filter.
  • a filter which may serve to remove particles from the liquid and which may be constituted by a mesh mounted in a holder, is preferably arranged in the base part. However, the filter may also be arranged in the top part. The filter is preferably removably mounted in one of said parts.
  • the liquid reservoir assembly of the present invention may be made of a plastic material, preferably a substantially transparent plastic material.
  • Suitable plastic materials are polypropylene, polyethylene and polyamide, although other materials may also be used. It is preferred that the material has a certain resilience.
  • the liquid reservoir assembly of the present invention may further comprise a coupling member for coupling the reservoir and the spray gun.
  • the coupling member may be made of metal or plastic, and may be provided with a suitable screw thread, a snap fit arrangement, or other coupling means.
  • the present invention also provides a spray gun assembly comprising a spray gun and a liquid reservoir assembly as defined above, and a base part for use in the liquid reservoir assembly as defined above.
  • the present invention further provides a kit-of-parts for forming a liquid reservoir assembly or a spray gun assembly as defined above.
  • the present invention additionally provides a method of using a spray gun, the method comprising the steps of:
  • first and second steps are not essential and may be reversed. It will be understood that a suitable opening is made in the container lid for passing liquid to the spray gun, and that suitable coupling means may be provided for coupling the lid and the spray gun.
  • the spray gun assembly shown merely by way of non-limiting example in Fig. 1 comprises a spray gun 10 and a reservoir assembly consisting of a top part 1 and a base part 2. It is noted that in Fig. 1 the spray gun assembly is shown in the position in which it is assembled, whereas in use the position of the spray gun, the base part and the top part would be reversed. Accordingly, the base part 2 (which is shown above the top part 1) is in use located below the top part 1, forming the base of the reservoir assembly. Similarly, the top part 1 is in use located above the base part 2.
  • the spray gun 10 may be a conventional, commercially available spray gun.
  • the reservoir assembly is novel and has advantageous properties which will be later explained with reference to Fig. 2.
  • the top part 1 of the reservoir assembly is constituted by a container, such as a mixing (blending) cup.
  • the container of Fig. 1 has a substantially circular cross-section, but the invention is not limited to this particular cross-section or shape. Markings may be present on the container to measure of quantities of liquids to be mixed and/or sprayed.
  • the container 1 of Fig. 1 has no air vent opening and its wall surfaces are closed, the only opening of the container being the access opening at one end, which opening is to be closed off by the base part or lid 2. As the container has no opening in its other end or side wall(s), it can be used as a mixing cup.
  • a Prior Art reservoir provided with a vent opening is not suitable for use as mixing cup.
  • the base part 2 shown in Fig. 1 has a funnel-shape to facilitate the flow of liquid from the reservoir assembly to the spray gun through the opening 3.
  • the base part 2 which serves as a lid for the container (top part) 1, may have suitable coupling means for coupling with the spray gun, such as a screw thread. Additional coupling means, which may involve a connecting tube, may be mounted on the base part 2 but are not essential.
  • suitable coupling means for coupling with the spray gun, such as a screw thread.
  • Additional coupling means which may involve a connecting tube, may be mounted on the base part 2 but are not essential.
  • Those skilled in the Art will be capable of selecting or designing coupling members suitable for a particular spray gun.
  • the top part (container) 1 can be used as a mixing cup.
  • the spray gun (which may previously be connected to a source of compressed gas, for example compressed air) is mounted on the base part (lid) 2. Then the container 1 is then closed off by the base part (lid) 2, forming a closed reservoir assembly. The resulting spray gun assembly is then ready for use.
  • the reservoir assembly of Fig. 1 does not include a liner, and that the container 1 is preferably disposable. In this way, a minimum number of parts is required while the cleansing of the spray gun assembly is made easy.
  • FIG. 2 An embodiment of both the top part (container) 1 and the base part (lid) 2 is shown in more detail in Fig. 2.
  • the container 1 is shown to have a substantially U-shaped edge 5 which fits into the corresponding U-shaped rim 4 of the lid 2. These matching elements 4 and 5 form a seal when brought together.
  • the rim is supported by support elements 6 which may be located along the perimeter of the container at a spacing of, for example, 60 degrees.
  • the support elements 6 and the edge 5 are preferably integral with the container 1.
  • the lid 2 is substantially planar, in contrast to the lid (base member) 2 of Figs. 1 and 3.
  • the lid 2 may be a normal container lid in which a hole 3 is made for use in a spray gun assembly.
  • the container (top part) 1 has no vent opening, which allows the container to be used as a mixing cup or storage container.
  • Prior Art spray gun reservoirs have a vent opening as it is believed that such an opening is indispensable. Air has to be drawn into the reservoir to compensate for the outflow of liquid.
  • a vent opening may be omitted as air may be drawn in through the seal constituted by the lid rim 4 and the container edge 5.
  • the seal provided by the matching sealing elements (the rim 4 and the edge 5 in the embodiment shown) is therefore not air-tight.
  • this seal is water-tight (in general: liquid-tight), in particular as in use the pressure in the container 1 will be lower than the outside pressure. Accordingly, air is drawn in but liquid does not leak out.
  • the container edge 5 and the lid rim 4 are both shown to be inversely U-shaped in Fig. 2.
  • the (inversely) U-shaped rim 4 of the lid (base part) 2 may advantageously be provided with an inner transverse ledge 8 which improves the "snap" action of the seal.
  • This ledge 8 can also be used in the embodiment of Fig. 3.
  • a suitable sealing arrangement could comprise gel or foam, in particular gel or foam capable of passing small quantities of air.
  • FIG. 3 An alternative embodiment of the base part or lid 2 is illustrated in Fig. 3, where Fig. 3a shows the base part 2 in (partial) cross-section while Fig. 3b shows the base part 2 in top view.
  • the base part 2 of Fig. 3 is substantially funnel-shaped, the funnel ending at the central liquid opening 3.
  • An outer surface near the opening 3 may be provided with a screw thread for mounting the base part 2 on a spray gun (10 in Fig. 1) but is in the embodiment shown provided with a bayonet coupling arrangement 7.
  • Other coupling arrangements are also possible, for example "snap-fit" arrangements in which the coupling parts are clamped.
  • a filter 9 is accommodated between the rims 4 .
  • a filter serves to remove particles from the liquid and thus prevent any blockage of the spray gun.
  • the filter 9 is shown to be located at the end of the base part remote from the opening 3, this is not essential and other positions are also possible, for example approximately half-way between the opening 3 and the remote end, or near the opening 3.
  • Suitable notches may be provided in the inner surface of the base part 2 for accommodating the filter 9, preferably using a "snap-fit" mounting.
  • the base part 2 may be provided with integral support elements 6' which serve to strengthen the part and to distribute any forces exerted on the part.
  • Both the base part or lid 2 and the top part or container 1 may be made of plastic, preferably transparent plastic. Suitable plastics are thermoplasts, in particular polyethylene, although other materials may also be used. It is preferred that both the container and the lid are made of a bio-degradable plastic material.
  • the container 1 and the lid 2 can be very inexpensive and may both be disposable, thus saving cleansing costs.
  • the liquid to be sprayed may be any liquid, including but not limited to paint (both paint based on water and paint based on other solvents), water, detergent and herbicide.
  • the present invention is based upon the insight that a liquid reservoir for use with a spray gun does not require an air vent opening if the seal between the parts of the reservoir is not perfect.
  • the present invention benefits from the insight that in use, the lowered pressure in the liquid reservoir draws air in while preventing the liquid flowing out.

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  • Nozzles (AREA)
EP05076539A 2005-07-05 2005-07-05 Vorratsbecher einer Sprühpistole mit flüssigkeitsdichter Belüftung Withdrawn EP1741493A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05076539A EP1741493A1 (de) 2005-07-05 2005-07-05 Vorratsbecher einer Sprühpistole mit flüssigkeitsdichter Belüftung
PCT/EP2006/004860 WO2007003245A1 (en) 2005-07-05 2006-05-16 Spray gun reservoir comprising a liquid tight vent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05076539A EP1741493A1 (de) 2005-07-05 2005-07-05 Vorratsbecher einer Sprühpistole mit flüssigkeitsdichter Belüftung

Publications (1)

Publication Number Publication Date
EP1741493A1 true EP1741493A1 (de) 2007-01-10

Family

ID=35229600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05076539A Withdrawn EP1741493A1 (de) 2005-07-05 2005-07-05 Vorratsbecher einer Sprühpistole mit flüssigkeitsdichter Belüftung

Country Status (2)

Country Link
EP (1) EP1741493A1 (de)
WO (1) WO2007003245A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009090273A1 (es) * 2008-01-16 2009-07-23 Boss Auto Import, S.A. Copa desechable de doble pared con superficie interior flexible y su tapa perfeccionadas para pistolas aerográficas
WO2010004305A2 (en) * 2008-06-17 2010-01-14 U-Pol Limited A connector for a gravity feed spray gun, a gravity feed spray gun and a method of preparing a spray paint
BE1026378B1 (nl) * 2018-06-15 2020-01-20 Deca Packaging Group Nv Ventielloze recipiënt voor gebruik op een spuitpistool en werkwijze waarbij zulke recipiënt wordt toegepast.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1027259B1 (nl) * 2019-05-06 2020-12-08 Chemicar Europe Nv Deksel voor beker, in het bijzonder een deksel monteerbaar op een verfpistool
WO2020225739A1 (en) * 2019-05-06 2020-11-12 Chemicar Europe Nv Lid for a cup, especially a lid mountable on a spray gun for paint
FR3110465B1 (fr) * 2020-05-20 2023-11-03 Exel Ind Godet pour pistolet de produit de revêtement à équilibrage de pression

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE731598C (de) * 1940-05-04 1943-02-12 Albert Krautzberger Farbbehaelter fuer Mal- und Spritzgeraete
DE729382C (de) * 1938-05-19 1943-02-27 Albert Krautzberger Farbbehaelter fuer Mal- und Spritzgeraete
EP0411520A2 (de) * 1989-08-04 1991-02-06 Roy D. Mattson Vorrichtung gegen Lecken und Tropfen
DE202004002563U1 (de) * 2004-02-19 2005-06-23 Sata Farbspritztechnik Gmbh & Co.Kg Farbbecher für eine Fließbecher-Farbspritzpistole

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE729382C (de) * 1938-05-19 1943-02-27 Albert Krautzberger Farbbehaelter fuer Mal- und Spritzgeraete
DE731598C (de) * 1940-05-04 1943-02-12 Albert Krautzberger Farbbehaelter fuer Mal- und Spritzgeraete
EP0411520A2 (de) * 1989-08-04 1991-02-06 Roy D. Mattson Vorrichtung gegen Lecken und Tropfen
DE202004002563U1 (de) * 2004-02-19 2005-06-23 Sata Farbspritztechnik Gmbh & Co.Kg Farbbecher für eine Fließbecher-Farbspritzpistole

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009090273A1 (es) * 2008-01-16 2009-07-23 Boss Auto Import, S.A. Copa desechable de doble pared con superficie interior flexible y su tapa perfeccionadas para pistolas aerográficas
WO2010004305A2 (en) * 2008-06-17 2010-01-14 U-Pol Limited A connector for a gravity feed spray gun, a gravity feed spray gun and a method of preparing a spray paint
WO2010004305A3 (en) * 2008-06-17 2010-03-11 U-Pol Limited A connector for a gravity feed spray gun, a gravity feed spray gun and a method of preparing a spray paint
BE1026378B1 (nl) * 2018-06-15 2020-01-20 Deca Packaging Group Nv Ventielloze recipiënt voor gebruik op een spuitpistool en werkwijze waarbij zulke recipiënt wordt toegepast.

Also Published As

Publication number Publication date
WO2007003245A1 (en) 2007-01-11

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