EP0264389A1 - Nozzle unit - Google Patents

Nozzle unit

Info

Publication number
EP0264389A1
EP0264389A1 EP87902069A EP87902069A EP0264389A1 EP 0264389 A1 EP0264389 A1 EP 0264389A1 EP 87902069 A EP87902069 A EP 87902069A EP 87902069 A EP87902069 A EP 87902069A EP 0264389 A1 EP0264389 A1 EP 0264389A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
length
nozzle body
orifice
tube
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Withdrawn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
EP87902069A
Other languages
German (de)
French (fr)
Inventor
Ole Koustrup Hansen
Rene Johnny Bernhard Wass
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.)
ON COMPUTER ELECTRONICS AS
Original Assignee
ON COMPUTER ELECTRONICS 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 ON COMPUTER ELECTRONICS AS filed Critical ON COMPUTER ELECTRONICS AS
Publication of EP0264389A1 publication Critical patent/EP0264389A1/en
Withdrawn legal-status Critical Current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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B05B1/323—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening the valve member being actuated by the pressure of the fluid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like

Definitions

  • the present invention relates to a nozzle unit for use at a pre ⁇ cise dosage of liquid in small quantities
  • a nozzle body which has a substantially conical nozzle duct in the region near by the nozzle orifice and which at least in the region in the immediate vicinity of the nozzle orifice is made of elastic material, preferably acid-proof rubber.
  • a nozzle unit of the type referred to in the introductory paragraph cha ⁇ racterized in that a part of the nozzle body length arranged remotest from the nozzle orifice is provided with a reinforcement, which extends to a region in the immediate vicinity of the nozzle orifice, so that only the elastic material in the immediate vicinity of the nozzle ori ⁇ fice is able to expand as a result of high pressure in the nozzle, whereby a variable nozzle orifice is imparted to the nozzle.
  • a nozzle unit is hereby obtained which in a structural simple way is imparted a variable nozzle orifice, which may be adapted to fluids of different viscosities and different rates of flow by a convenient choise of elastic material and wall thichness, which choice will be possible to a skilled in the art.
  • the reinforcement ensures that a so-called balloon effect will not occur, which otherwise, might cause an inaccurate dosage or a rupture of the elastic material.
  • the nozzle unit is characterized in that the nozzle body throughout is made of elastic material and that the reinforcement comprises an increase of the mate ⁇ rial thickness in the wall of the nozzle body.
  • the reinforcement comprises an increase of the mate ⁇ rial thickness in the wall of the nozzle body.
  • the nozzle unit is characterized in that the reinforcement comprises a substantialle non-elastic tube with a length shorter than the length of the nozzle body and that the tube is arranged surrounding the nozzle body or embedded therein.
  • the reinforcement comprises a substantialle non-elastic tube with a length shorter than the length of the nozzle body and that the tube is arranged surrounding the nozzle body or embedded therein.
  • the surrounding tube has a length of about 80 - 95% of the length of the nozzle body as it hereby becomes possible to prevent the balloon effect to occur at any position along substantially the whole extension of the conical part rather than at the transition between the conical part and the cylindrical part.
  • the nozzle body has a length of 50 mm and an inner diameter of about 5 mm at the collar, and the surrounding tube has a length of about 40 - 45 mm.
  • the surrounding tube may not have a length corresponding to or greater than the length of the nozzle body, since hereby a risk arises for adhering drops which might fall off and reduce the accuracy of dosage.
  • Fig. 1 shows a section through a nozzle unit according to the present invention
  • Fig. 2 shows a section through the nozzle unit of Fig. 1 and a surrounding tube, and Fig. 3-6 sections, in a reduced scale through further embodiments of a nozzle unit according to the present invention.
  • a nozzle unit 1 is shown, comprising a collar 2 for securing and fixing of nozzle body as regards a holder (not shown).
  • the nozzle body 1 comprises a cylindrical part 3 and a substantially conical part 4 with a conical nozzle duct 5.
  • the conical nozzle duct 5 extends from the nozzle orifice 6 over the greater part of the whole length of the nozzle body 1.
  • the nozzle body 1 has substantially con ⁇ stant wall thickness over the whole length and is made of acid-proof rubber, to resist aggressive constituents, such as solvents in the discharged fluid.
  • the elasticity of the rubber will depend on the in ⁇ tended use, and it can be chosen with due regard to the properties requested for the nozzle.
  • a corresponding nozzle body 1 is shown, which is provi- ded with a reinforcement in the form of a tube 7.
  • the tube 7 extends from the collar 2 beyond the transition 8 between the cylindrical part 3 and the conical part 4. Accordingly, at the transition 8 where the section is decreased and where the largest stresses on the wall of the nozzle body occur, the tube 7 will insure that no balloon effect arises in the nozzle body 1 since the expansion thereof is limited of the non-elastic tube 7.
  • FIGs. 3-6 show further embodiments of the nozzle body intended to be made of the same material as is the nozzle body shown on Figs. 1 and 2.
  • Fig. 3 shows a nozzle body 1, wherein the cylindrical part 3 is of a length considerably larger than the length of the substantially conical part.
  • This nozzle body may be sourrounded by a tube (not shown) corresponding to the tube 7 of Fig. 2.
  • Fig. 4 shows a nozzle body 1, wherein the substantialle conical part is extending wholly along the length of the nozzle body 1.
  • This nozzle body too, may be surrounded by a tube corresponding to the tube 7 of Fig. 2.
  • Figs. 5 and 6 show two nozzle bodies, each of which integrally is provided with a reinforcement.
  • the nozzle body 1 is provided with a reinforcement in the form of a tube 10 embedded in the very wall 9 of the nozzle 1, in the cylindrical part 3 thereof.
  • the tube illustrated extends wholly along the length of the conical part 3.
  • the nozzle body is provided with a reinforcement in the form of an increase of the wall thickness, extending along a part of the length of the nozzle body. This increased wall thickness will in the embodi ⁇ ment shown substantially extends along the whole length of the cylin ⁇ drical part.
  • nozzle bodies with cylindrical and conical configuration have been explained and illustrated in the above, it is obvious that the nozzle body may be made with a curvature, starting at the nozzle orifice 6 and extending wholly or partly along the length of the nozz ⁇ le body 1.
  • a nozzle unit An example of the accuracy obtainable with a nozzle unit according to the present invention may be given.
  • an accuracy of dosage of 0,05 ml, depending on the drop size at the nozzle orifice has been achieved. This has been achieved in a nozzle unit, which has a rate of throughput of 10 ml/sec at a pressure of 2,8 bar as measured in the nozzle body orifice.
  • the nozzle unit employed had a length of about 50 mm, an inner diameter of about 5 mm at the collar 2 and a diameter of about 0,5 mm at the nozzle orifice 6 and the fluid employed had a viscosity substantially corresponding to the viscosity of water.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Coating Apparatus (AREA)

Abstract

Une unité d'ajutage, servant au dosage précis de liquides en petites quantités et comprenant un corps d'ajutage (1) muni d'un conduit d'ajutage (5) essentiellement conique proche de l'orifice d'ajutage (6), peut concilier les exigences contradictoires d'une large section de l'orifice d'ajutage permettant un débit élevé et d'une petite section de l'orifice d'ajutage permettant le passage de gouttes de petite taille, un dosage de grande précision étant ainsi possible. Cette possibilité se réalise si le corps d'ajutage (1), du moins dans la région (4) située à proximité immédiate de l'orifice d'ajutage (6), est en matériau élastique, de préférence en caoutchouc résistant aux acides. Au cas où ladite unité d'ajutage est destinée à fonctionner à des pressions élevées, elle peut être pourvue d'un renforcement, ayant la forme par exemple d'un tube enveloppant (7), afin d'empêcher l'apparition de l'effet dit de ballon.A nozzle unit, used for the precise metering of liquids in small quantities and comprising a nozzle body (1) provided with an essentially conical nozzle pipe (5) close to the nozzle orifice (6), can reconcile the contradictory requirements of a large section of the nozzle orifice allowing a high flow rate and a small section of the nozzle orifice allowing the passage of small drops, a metering of high precision being thus possible. This possibility is realized if the nozzle body (1), at least in the region (4) located in the immediate vicinity of the nozzle orifice (6), is made of elastic material, preferably acid-resistant rubber. In the event that said nozzle unit is intended to operate at high pressures, it may be provided with a reinforcement, having the form for example of an enveloping tube (7), in order to prevent the appearance of the so-called balloon effect.

Description

NOZZLE UNIT
Background of the Invention
The present invention relates to a nozzle unit for use at a pre¬ cise dosage of liquid in small quantities comprising a nozzle body, which has a substantially conical nozzle duct in the region near by the nozzle orifice and which at least in the region in the immediate vicinity of the nozzle orifice is made of elastic material, preferably acid-proof rubber.
From the specifications of US patents No. 3,129,894 and No. 3,612,409 nozzle units are known which have a substantially conical nozzle duct and which are made of resilient material. However, none of the nozzles disclosed are suited for use at a precise dosage of liquid in small quantities, seeing that the two nozzles disclosed, have an increasing material thichness in the region near by the nozzle orifice so as to obtain a substantially firm nozzle duct for producing of high rates of flow.
It is known that the accuracy of discharge of a nozzle depends on the dimensions of the orifice of the nozzle. In obtaining a high accu¬ racy it is necessary to use a small nozzle orifice, in that a small orifice provides for a high accuracy, whereas a bigger orifice, owing to the size of the drop at the nozzle orifice, permits a less accuracy of dosage only. However, it is advisable to reduce the time used for the dosage and in case an excessive drop of pressure across the nozzle should be avoided this will require a bigger orifice. In case big nozz- le orifices are used it is necessary to provide a source of vacuum, which is connected with the nozzle at the end of the discharge so as to ensure that a big drop at the orifice will not "fall off" and here¬ by reduce the accuracy of dosage. It is obvious that the manufacture of such a structure is complex and expensive. Accordingly, conflicting requirements exist concerning the struc¬ ture of the nozzle, and it is the purpose of the present invention to comply with these requirements in providing an especially simple and inexpensive nozzle unit allowing both a comparative high rate of throughput and a high accuracy of dosage. According to the present invention this is achieved by means of a nozzle unit of the type referred to in the introductory paragraph cha¬ racterized in that a part of the nozzle body length arranged remotest from the nozzle orifice is provided with a reinforcement, which extends to a region in the immediate vicinity of the nozzle orifice, so that only the elastic material in the immediate vicinity of the nozzle ori¬ fice is able to expand as a result of high pressure in the nozzle, whereby a variable nozzle orifice is imparted to the nozzle.
A nozzle unit is hereby obtained which in a structural simple way is imparted a variable nozzle orifice, which may be adapted to fluids of different viscosities and different rates of flow by a convenient choise of elastic material and wall thichness, which choice will be possible to a skilled in the art. By its design and dimensions the reinforcement ensures that a so-called balloon effect will not occur, which otherwise, might cause an inaccurate dosage or a rupture of the elastic material. With a nozzle orifice provided in such a way, it becomes possible to work with a bigger drop of pressure across the nozzle, and accordingly, a higher rate of throughput as a higher pres¬ sure in the nozzle will cause an expanding of the nozzle orifice, whe¬ reby the throughput may be increased, and simultaneously, when the pressure inside the nozzle falls and due to the elasticity of the ma¬ terial a contraction will occur, and hereby the nozzle orifice will reassume its small section ensuring a high accuracy of dosage, in that a big drop will not occur at the nozzle orifice at the end of the dis¬ charge, which otherwise could fall off and reduce the accuracy of dosa¬ ge.
In a preferred embodiment of the invention the nozzle unit is characterized in that the nozzle body throughout is made of elastic material and that the reinforcement comprises an increase of the mate¬ rial thickness in the wall of the nozzle body. Hereby a nozzle body with the above mentioned structure is obtained which is provided with an especially simple reinforcement excluding the balloon effect and, wherein the nozzle body and the reinforcement can be made by casting of a single material. This type of nozzle unit will especially be ap¬ plicable in connection with nozzle units where moderate pressures occur in that it is possible to prevent the occurrence of the balloon effect solely by means of the material increase. According to a further preferred embodiment of the invention the nozzle unit is characterized in that the reinforcement comprises a substantialle non-elastic tube with a length shorter than the length of the nozzle body and that the tube is arranged surrounding the nozzle body or embedded therein. Hereby a nozzle unit is obtained wherein occuring of the balloon effect in the nozzle body is prevented in a safe way. Particularly this is the case when a tube surrounding the nozzle body has a length such that it partly extends out over the conical part of the nozzle body, seeing that the balloon effect is most likely to occur in the vicinity of the transition between the conical part and the cylindrical part, where an increase of pressure arises due to the reduced section.
In a convenient embodiment the surrounding tube has a length of about 80 - 95% of the length of the nozzle body as it hereby becomes possible to prevent the balloon effect to occur at any position along substantially the whole extension of the conical part rather than at the transition between the conical part and the cylindrical part. In an advantageous embodiment of the nozzle unit for discharging of tint to a base paint the nozzle body has a length of 50 mm and an inner diameter of about 5 mm at the collar, and the surrounding tube has a length of about 40 - 45 mm. Hereby a reinforcement of substantially the whole extension of the nozzle unit is obtained when a high pressu¬ re, by discharges of tint, is created inside the duct, which pressure expands the conical nozzle duct to abut on the surrounding tube. The surrounding tube may not have a length corresponding to or greater than the length of the nozzle body, since hereby a risk arises for adhering drops which might fall off and reduce the accuracy of dosage. Description of the Drawings
The invention will hereinafter be further explained with referen¬ ce to the drawing wherein,
Fig. 1 shows a section through a nozzle unit according to the present invention
Fig. 2 shows a section through the nozzle unit of Fig. 1 and a surrounding tube, and Fig. 3-6 sections, in a reduced scale through further embodiments of a nozzle unit according to the present invention. On Fig. 1 a nozzle unit 1 is shown, comprising a collar 2 for securing and fixing of nozzle body as regards a holder (not shown). The nozzle body 1 comprises a cylindrical part 3 and a substantially conical part 4 with a conical nozzle duct 5. The conical nozzle duct 5 extends from the nozzle orifice 6 over the greater part of the whole length of the nozzle body 1. The nozzle body 1 has substantially con¬ stant wall thickness over the whole length and is made of acid-proof rubber, to resist aggressive constituents, such as solvents in the discharged fluid. The elasticity of the rubber will depend on the in¬ tended use, and it can be chosen with due regard to the properties requested for the nozzle.
On Fig. 2 a corresponding nozzle body 1 is shown, which is provi- ded with a reinforcement in the form of a tube 7. Hereby it will be possible to use the nozzle body 1 shown in connection with a greater pressure drop across the nozzle. The tube 7 extends from the collar 2 beyond the transition 8 between the cylindrical part 3 and the conical part 4. Accordingly, at the transition 8 where the section is decreased and where the largest stresses on the wall of the nozzle body occur, the tube 7 will insure that no balloon effect arises in the nozzle body 1 since the expansion thereof is limited of the non-elastic tube 7.
When fluid is dosed through the nozzle an increase of the pressu- re, during a period of maximum throughput, will cause an increase of the nozzle orifice 6, as the elasticity of the material is overcomed by the pressure in the duct 5. Hereby it is possible to obtain a high rate of throughput. When the input to the nozzle is cut off, the pres¬ sure will drop at the end of the dosage and, accordingly, the elasti- city of the material of the wall of the nozzle body again will overco¬ me the pressure in the duct 5, and the nozzle body reassumes its origi¬ nal unstressed configuration. Hereby a nozzle orifice 6 with a small magnitude is obtained, and accordingly, a high accuracy depending on the size of the drop at the nozzle orifice 6 is obtained. Figs. 3-6 show further embodiments of the nozzle body intended to be made of the same material as is the nozzle body shown on Figs. 1 and 2.
Fig. 3 shows a nozzle body 1, wherein the cylindrical part 3 is of a length considerably larger than the length of the substantially conical part. This nozzle body may be sourrounded by a tube (not shown) corresponding to the tube 7 of Fig. 2.
Fig. 4 shows a nozzle body 1, wherein the substantialle conical part is extending wholly along the length of the nozzle body 1. This nozzle body, too, may be surrounded by a tube corresponding to the tube 7 of Fig. 2.
Figs. 5 and 6 show two nozzle bodies, each of which integrally is provided with a reinforcement. On Fig. 5 the nozzle body 1 is provided with a reinforcement in the form of a tube 10 embedded in the very wall 9 of the nozzle 1, in the cylindrical part 3 thereof. The tube illustrated extends wholly along the length of the conical part 3. On Fig. 6 the nozzle body is provided with a reinforcement in the form of an increase of the wall thickness, extending along a part of the length of the nozzle body. This increased wall thickness will in the embodi¬ ment shown substantially extends along the whole length of the cylin¬ drical part.
Though nozzle bodies with cylindrical and conical configuration have been explained and illustrated in the above, it is obvious that the nozzle body may be made with a curvature, starting at the nozzle orifice 6 and extending wholly or partly along the length of the nozz¬ le body 1.
An example of the accuracy obtainable with a nozzle unit according to the present invention may be given. In connection with an embodiment substantially corresponding to the embodiment illustrated on Fig. 1, an accuracy of dosage of 0,05 ml, depending on the drop size at the nozzle orifice, has been achieved. This has been achieved in a nozzle unit, which has a rate of throughput of 10 ml/sec at a pressure of 2,8 bar as measured in the nozzle body orifice. The nozzle unit employed had a length of about 50 mm, an inner diameter of about 5 mm at the collar 2 and a diameter of about 0,5 mm at the nozzle orifice 6 and the fluid employed had a viscosity substantially corresponding to the viscosity of water.

Claims

C l a i m s
1. Nozzle unit for use at a precise dosage of liquid in small quantities comprising a nozzle body, which has a substantially conical nozzle duct (5) in the region near by the nozzle orifice (6) and which at least in the region (4) in the immediate vicinity of the nozzle orifice (6) is made of elastic material, preferably acid-proof rubber, c h a r a c t e r i z e d in that a part (3) of the nozzle body length arranged remotest from the nozzle orifice is provided with a reinforce¬ ment (3,7,10), which extends to a region in the immediate vicinity of the nozzle orifice, so that only the elastic material in the immediate vicinity of the nozzle orifice is able to expand as a result of high pressure in the nozzle, whereby, a variable nozzle orifice is imparted to the nozzle.
2. Nozzle unit according to claim 1, c h a r a c t e r i z e d in that the nozzle body throughout is made of elastic material and that the reinforcement comprises an increase (3, Fig. 6) of the material thickness in the wall (9) of the nozzle body.
3. Nozzle unit according to claim 1, c h a r a c t e r i z e d in that the reinforcement comprises a substantially non-elastic tube (10) with a length shorter than the length of the nozzle body, and that the tube (10) is arranged embedded in the nozzle body.
4. Nozzle unit according to claim 1, c h a r a c t e r i z e d in that the reinforcement comprises a substantially non-elastic tube (7) with a length shorter than the length of the nozzle body, and that the tube (7) is arranged surrounding the nozzle body.
5. Nozzle unit according to claim 4, c h a r a c t e r !* z e d in that the surrounding tube has a length such that it partly extends out over the conical part (4) of the nozzle body (1).
6. Nozzle unit according to claim 4 or 5, c h a r a c t e r i z e d in that the tube (7) has a length of about 80 - 95% of the length of the nozzle body.
7. Nozzle unit according to claim 4,5 or 6, c h a r a c t e r i ¬ z e d in that the nozzle body has a length of 50 mm and an inner dia¬ meter of about 5 mm at the collar (2), and that the surrounding tube (7) has a length of about 40 - 45 mm.
EP87902069A 1986-03-11 1987-03-09 Nozzle unit Withdrawn EP0264389A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK1124/86 1986-03-11
DK112486A DK112486A (en) 1986-03-11 1986-03-11 NOZZLE DEVICE

Publications (1)

Publication Number Publication Date
EP0264389A1 true EP0264389A1 (en) 1988-04-27

Family

ID=8101281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87902069A Withdrawn EP0264389A1 (en) 1986-03-11 1987-03-09 Nozzle unit

Country Status (3)

Country Link
EP (1) EP0264389A1 (en)
DK (1) DK112486A (en)
WO (1) WO1987005537A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735080C1 (en) * 1987-10-16 1988-10-13 Borsig Gmbh Device for destroying foam
US5310257A (en) * 1992-10-29 1994-05-10 Fluid Management Limited Partnership Mixing apparatus
US5305917A (en) * 1992-11-19 1994-04-26 Fluid Management Limited Partnership Simultaneous dispensing apparatus
US5407100A (en) * 1994-01-07 1995-04-18 Fluid Management Limited Partnership Dispensing apparatus with a moveable plate
GB2289230A (en) * 1994-05-06 1995-11-15 David Charles Porter Applicator nozzle
FR2861321B1 (en) * 2003-10-24 2006-08-25 Renault Sa SPRINKLER FOR A FLUID SUPPLY DEVICE.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027098A (en) * 1960-10-24 1962-03-27 Stoner Rubber Company Inc Spray nozzle
US3129894A (en) * 1961-09-21 1964-04-21 Clarence E Schermerhorn Combined nozzle and guard for faucet spouts
FR1545089A (en) * 1967-05-13 1968-11-08 Ltg Lufttechnische Gmbh Induction device for air conditioning
US3612409A (en) * 1969-10-20 1971-10-12 Raymond C Henning Quick-connecting, self-sealing flexible hose nozzle
DE2433688A1 (en) * 1973-08-06 1975-02-20 Brunswick Corp SELF-CLEANING DISCHARGE NOZZLE
US4492339A (en) * 1983-03-02 1985-01-08 Nelson Irrigation Corporation Flow control nozzle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8705537A1 *

Also Published As

Publication number Publication date
WO1987005537A1 (en) 1987-09-24
DK112486D0 (en) 1986-03-11
DK112486A (en) 1987-09-12

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Inventor name: HANSEN, OLE, KOUSTRUP

Inventor name: WASS, RENE, JOHNNY, BERNHARD