EP1650140A1 - Durch eine Druckdose versorgte Schaum- oder Flüssigkeitspistole - Google Patents

Durch eine Druckdose versorgte Schaum- oder Flüssigkeitspistole Download PDF

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Publication number
EP1650140A1
EP1650140A1 EP04077875A EP04077875A EP1650140A1 EP 1650140 A1 EP1650140 A1 EP 1650140A1 EP 04077875 A EP04077875 A EP 04077875A EP 04077875 A EP04077875 A EP 04077875A EP 1650140 A1 EP1650140 A1 EP 1650140A1
Authority
EP
European Patent Office
Prior art keywords
adaptor
gun
needle
dispensing
dispensing gun
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Withdrawn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
EP04077875A
Other languages
English (en)
French (fr)
Inventor
Aster De Schrijver
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP04077875A priority Critical patent/EP1650140A1/de
Priority to PCT/EP2005/011134 priority patent/WO2006045469A1/en
Publication of EP1650140A1 publication Critical patent/EP1650140A1/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Withdrawn legal-status Critical Current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
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0894—Gun with a container which, in normal use, is located above the gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/16—Actuating means
    • B65D83/164—Actuators comprising a manually operated valve and being attachable to the aerosol container, e.g. downstream a valve fitted to the container; Actuators associated to container valves with valve seats located outside the aerosol container

Definitions

  • the present invention concerns a design improvement to a dispensing gun for dispensing of one or two component polyurethane (PU) foam systems, adhesives, sealants, etc.
  • PU polyurethane
  • the dispensing guns presently available suffers from a variety of drawbacks.
  • the emptying of the can is not complete because the pressure in the can is used for opening a valve system and this pressure is decreasing with the use time of the can.
  • a strong spring to provide a perfect desirable sealing, and thus a better barrier against moisture penetration from the outside cannot be used because such will provoke a pressure loss and will interrupt the delivery of foam at a still earlier stage before complete emptying of the can or vessel.
  • the gun adaptor is an auxiliary part mounted onto a dispensing gun for dispensing of one or two component polyurethane (PU) foam systems, adhesives, sealants, etc.
  • This auxiliary part assures/facilitates the connection of the pressurized can or vessel onto the dispensing gun and at the same time assures the sealing when the pressurized can is disconnected (see fig. 1).
  • the traditional EA gun adaptor consists out of an adaptor ring and ball + spring mechanism which assures the opening/closing and sealing of the gun adaptor.
  • the opening of this ball + spring mechanism is forced by the pressure in the can.
  • the fluid then has access to the delivering tube which is closed at his end by the end of a coaxial needle and which may be triggered back to dispense the fluid.
  • the opening and closing of the adaptor is integrated in the trigger movement of the gun and is thus independent on the pressure in the can.
  • the pressurized can is placed perpendicular to the handgrip.
  • the trigger is a full surface trigger preventing the fingers from being pinched while using the gun.
  • Fig. 1 is a gun 1 according to the prior art with a delivering tube 2, a co-axial internal gun needle 7, a handle 3, a pressurized can 4, a gun adaptor 5, and a trigger 6 actuating a backward movement of the gun needle 7 inside the tube in order to deliver the fluid at the output end 8.
  • Fig. 2a and 2b illustrate in more detail the gun adaptor 20 according to the prior art.
  • a adaptor ring 9 which form a seat for a ball 10 pressed by a spring 11.
  • the opening of the spring and ball mechanism is forced by the pressure in the can, and the fluid may then reach the dispensing tube awaiting to be dispensed by the trigger mechanism.
  • Figs. 3a and 3b represent schematically a view of the adaptor according to the invention, closed or open respectively.
  • the adaptor 30 is opened indirectly by the gun needle 37 and trigger 36 movement. The latter pushes down an "adaptor needle” 12 against the resistance of a spring 11.
  • the gun needle 7 is drawn backwards horizontally by the gun trigger movement.
  • Fig. 3c is an enlargement in perspective showing the insert on the needle traversing the adaptor needle in the open position.
  • Fig. 4 illustrate a design of the adaptor needle 12.
  • the design of the adaptor needle is foreseen with longitudinal grooves or cavities 13.
  • Fig. 5a and 5b illustrate another example of a gun adaptor based on the same opening/closing principle forced by the gun needle and trigger movement.
  • the adaptor needle is replaced by a ball 51.
  • the present spring will assure accurate contact of the ball onto the conical sealing surface of the adaptor ring.
  • the gun needle connection means 55 is also shown.
  • FIG. 6 Other examples of a gun adaptor based on the same opening/closing principle forced by the gun needle and trigger movement are shown in fig. 6, fig. 7 and fig. 8. The corresponding adaptor rings are not shown.
  • the sealing and closing functions of the adaptor are taken over by a design seal that is to say a cup seal in Fig. 6, a cylindrical seal in Fig. 7 and a double O-ring in Fig. 8.
  • Fig. 9 shows a new more ergonomic design of the gun , which is permitted by the new mechanism of the invention.
  • the pressure can 4 is located above the handle 3, no more offset along the dispensing tube.
  • the trigger 6 is a plain surface trigger and therefore prevents the fingers from being pinched while actuating the gun.

Landscapes

  • Coating Apparatus (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
EP04077875A 2004-10-19 2004-10-19 Durch eine Druckdose versorgte Schaum- oder Flüssigkeitspistole Withdrawn EP1650140A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04077875A EP1650140A1 (de) 2004-10-19 2004-10-19 Durch eine Druckdose versorgte Schaum- oder Flüssigkeitspistole
PCT/EP2005/011134 WO2006045469A1 (en) 2004-10-19 2005-10-13 Foam or fluid dispensing gun supplied by pressurised can

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04077875A EP1650140A1 (de) 2004-10-19 2004-10-19 Durch eine Druckdose versorgte Schaum- oder Flüssigkeitspistole

Publications (1)

Publication Number Publication Date
EP1650140A1 true EP1650140A1 (de) 2006-04-26

Family

ID=34928577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04077875A Withdrawn EP1650140A1 (de) 2004-10-19 2004-10-19 Durch eine Druckdose versorgte Schaum- oder Flüssigkeitspistole

Country Status (2)

Country Link
EP (1) EP1650140A1 (de)
WO (1) WO2006045469A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2808088A1 (de) 2013-05-31 2014-12-03 Altachem N.V. Flüssigkeitsausgabepistole

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996000184A1 (en) * 1994-06-23 1996-01-04 Insta-Foam Products, Inc. Improved dispenser for fluent products
DE19503495A1 (de) * 1995-02-03 1996-08-08 Amv Autom Montage Vertrieb Fa Spritzpistole mit ansetzbaren Düsenelementen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996000184A1 (en) * 1994-06-23 1996-01-04 Insta-Foam Products, Inc. Improved dispenser for fluent products
DE19503495A1 (de) * 1995-02-03 1996-08-08 Amv Autom Montage Vertrieb Fa Spritzpistole mit ansetzbaren Düsenelementen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2808088A1 (de) 2013-05-31 2014-12-03 Altachem N.V. Flüssigkeitsausgabepistole

Also Published As

Publication number Publication date
WO2006045469A1 (en) 2006-05-04

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