EP0841101B1 - Hydrodynamic tool for the cleaning of tubes and conduits - Google Patents

Hydrodynamic tool for the cleaning of tubes and conduits Download PDF

Info

Publication number
EP0841101B1
EP0841101B1 EP19960117817 EP96117817A EP0841101B1 EP 0841101 B1 EP0841101 B1 EP 0841101B1 EP 19960117817 EP19960117817 EP 19960117817 EP 96117817 A EP96117817 A EP 96117817A EP 0841101 B1 EP0841101 B1 EP 0841101B1
Authority
EP
European Patent Office
Prior art keywords
inlet opening
outlet openings
diameter
pressurized water
water inlet
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
EP19960117817
Other languages
German (de)
French (fr)
Other versions
EP0841101A1 (en
Inventor
Kurt Hörger
Hans Prof. Dr. Lutze
Original Assignee
Kurt Hörger
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 Kurt Hörger filed Critical Kurt Hörger
Priority to EP19960117817 priority Critical patent/EP0841101B1/en
Publication of EP0841101A1 publication Critical patent/EP0841101A1/en
Application granted granted Critical
Publication of EP0841101B1 publication Critical patent/EP0841101B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F9/00Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/04Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/049Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
    • B08B9/0495Nozzles propelled by fluid jets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2209/00Details of machines or methods for cleaning hollow articles
    • B08B2209/02Details of apparatuses or methods for cleaning pipes or tubes
    • B08B2209/027Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces
    • B08B2209/04Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces using cleaning devices introduced into and moved along the pipes
    • B08B2209/045Making cleaning devices buoyant within a pipeline to be cleaned

Description

The invention relates to a hydrodynamic tool for the cleaning of pipes and channels according to the generic term of the first claim. These tools are as Flow-through parts are formed and can e.g. Sewer cleaning nozzles or sole cleaner.

Numerous sewer cleaning nozzles are already known which a water connection as a pressurized water inlet opening and associated rearward recoil ports exhibit. Due to the recoil force of the water the nozzle experiences a feed movement in the pipe or channel. To a favorable efficiency of energy conversion to achieve the pressure loss along the Keep the flow as small as possible.

The following conditions must be guaranteed:

  • Avoidance of sharp-edged sudden transitions,
  • Make the deflection radii as large as possible
  • Rounding off the chamfers,
  • Avoiding the impact of the flow on surfaces,
  • Diameter of the guide as large as possible
  • Optimum between flow velocity and flow rate,
  • low wall roughness (R Z <10µm = finishing).

Efficiency is only achieved if these conditions are observed and the cleaning power of the flow parts significantly increased and at the same time the energy and Water consumption reduced. A fluidic already optimized nozzle is described in WO 85/05295.

The connecting channels between the pressurized water inlet opening and recoil opening a relatively large one Radius on. Such a nozzle is shown in FIG. one in the middle in the area of the hose connection conical water divider in the manner of a Has inlet taper at which the radius connects. The widened from the hose connection Cavity in the nozzle relatively sharp, so that a annular baffle in the direction of the recoil openings is formed. The outflow openings lead from the Baffle surface in the cavity in the beam angle to the outside. In the outflow openings are inserted into nozzles Towards the cavity a conical extension of the Have inner diameter. By hitting the Liquid flow on the baffle arises after the Fluid dynamics an inconsistent narrowing of the cross-section already significantly reduced efficiency. Add to that the pressure and shape resistance of the baffle plate, which too leads to a further reduction in efficiency. Because of this not optimal fluidic design the axial pressure of the emerging water jet and thus weakening the cleaning effect. A significant one In contrast, improvement is achieved with that in FIG. 4 shown nozzle achieved. The water is through channels (Hoses) in a large radius to the pressurized water outlet openings guided. Thus, there is turbulence minimized and the rays stay focused longer which significantly improves cleaning performance becomes. In addition, the water circulation reduces the Pressure drops. The disadvantage is that the water bypass via hoses that have an insufficient lifespan exhibit. DE-C-195 16 780 is a hydrodynamic Nozzle known, which has water channels, the one straight line area, inclined at an angle are and essentially tangential in one Distribution chamber open out the largest possible radius having. Even with this solution there are performance losses connected because the water is at the bottom of the distribution chamber can swirl.

following a similar principle as the sewer cleaning nozzles so-called sole cleaners work. According to DE 32 37 583 A1 and DE 35 02 916 A1 from an open Basic construction in the manner of a sled with skid-shaped arranged parallel to each other on both sides Elements. The backflow openings are inclined so that they are directed to the bottom of the channel. Roll bar secure the sole cleaners against tipping over. In DE GM 93 08 910.4 becomes a sewer cleaning device in the form described a sole cleaner that a closed and has a compact outer design. The one-sided round surface facilitates automatic re-erection. The disadvantage of the sole cleaner is the fluidic unfavorable water supply and the associated Service restrictions.

Furthermore, there are no sewer cleaning nozzles and Sole cleaner known, the weight of each Pump performance can be adjusted.

The object of the invention is a hydrodynamic Tool for cleaning pipes and ducts too develop that the highest possible efficiency and maximum cleaning power with minimum energy consumption guaranteed in its weight according to the Area of application can be varied and a high Lifetime guaranteed.

This object is achieved by the features of the first claim and the further features in the subclaims solved.

The hydrodynamic tools are as flow parts trained and have a pressurized water inlet opening on the water channels with the pressurized water outlet openings connected is.

The water channels from the hose connection (pressurized water inlet opening) to the pressurized water outlet openings trained without a paragraph and have one largest possible radius. The direction of curvature of the The radius of the water channels is opposite to that Pressure water inlet opening inclined. The water channels close to the pressurized water inlet opening on and go partially in this connection area into each other. Each water channel has a circular one Cross section and thus begins at the pressurized water inlet opening, that they're with the innermost point their diameter in the center and with the extreme Point of their diameter on the outside diameter of the pressurized water inlet opening connects. This will in Area of transition from the pressurized water inlet opening a conical to the water channels Water divider formed by the invention Connection of the water channels and through their outer surface has a segment-like subdivision. The Basically, segments have the radius of Water channels on. With a pressurized water inlet opening with a relatively large diameter of the hose connection the diameter of the pressurized water inlet opening tapers to the position where connect the water channels. The rejuvenation is there preferably conical or funnel-shaped. The water channels can in their connection area the pressurized water inlet opening has an enlarged diameter have, which extends to the lowest point of the Radius of curvature to the diameter that the water guide then steadily to the pressure water outlet opening has, tapered. Overall, this makes it a continuous one funnel-shaped feed from the pressurized water inlet opening for the respective water supply and pressure water outlet opening created. The pressurized water outlet openings are compared in the beam angle α inclined to the longitudinal axis of the hydrodynamic tool. Furthermore, in the pressurized water outlet openings A screw thread is provided for the reflex nozzles. If the reflex nozzles have a screw head, are in the pressurized water outlet openings for the Countersunk head arranged. Depending on how far the pressurized water outlet openings according to their Beam angle of the thread diameter and the countersink protrude into the tool body, the water channels go either with the end of the radius in the pressurized water outlet openings over or lead from the end of Radius in a straight line and at an angle α the pressurized water outlet openings. The water channels bind to the pressurized water outlet openings that after screwing in the radiation nozzles there are no discontinuous ones Cross-sectional changes are formed. The straight forward Area of the water supply or the pressure water outlet opening essentially close tangent to the radius of the water supply.

In addition to the pressurized water inlet opening, the Water channels and the pressurized water outlet openings there can be another cavity in the tool for filling of fiber. This is with a locking option, preferably in the form of a Bore with a plug (especially with Thread). This makes it possible to lose weight of the hydrodynamic tool according to the pump output to vary.

The ballast space is in the direction of movement before Water supply arranged horizontally. It can be used as needed be filled with fiber, preferably Lead granulate, sand, water or a sand / water mixture Find application.

The hydrodynamic tools are preferably as Castings trained because their interior design by Casting is technologically advantageous. The The core of the casting will be in the future Geometry of the pressure water inlet opening, the water channels and the pressurized water outlet openings.

If an additional ballast space is required, this will be done another core is provided in the mold. Wall roughness less than 10µm to minimize the pipe friction value are, for example, through the application an investment casting process guaranteed.

As a material for the hydrodynamic tools preferably a stainless cast alloy is used.

Rust protection in other cast alloys can be caused by Anti-rust paint or other types of coating, e.g. galvanizing can be achieved.

By completely eliminating discontinuous changes in cross-section and shape resistance with the new and elegant interior design of the Tools become shock losses and turbulent flows reduced to almost zero, the efficiency in Comparison to conventional hydrodynamic tools in Form of sewer cleaning nozzles or sole cleaners Similar design significantly increased and the fluidic Behavior significantly improved.

The following advantages are still achieved:

  • Reduction of energy and water consumption,
  • Increase in cleaning power,
  • long life span,
  • variable weight.

With the solution according to the invention, for the first time Tool for hydrodynamic cleaning of pipes and Channels created, which all the above Benefits guaranteed. The invention is described below using an exemplary embodiment and associated drawings explained in more detail.

Show it:

Fig. 1:
Top view of a sewer cleaning nozzle 1
Fig. 2:
Sewer cleaning nozzle 1 in a sectional view along the line X acc. Fig. 1
Fig. 2a:
Section (top view) of the distribution cone along the line Z acc. Fig. 2
Fig. 2b:
Perspective view of Fig. 2a.
Fig. 3:
Sewer cleaning nozzle 1 in sectional view with additional cavity 7
Fig. 4:
Perspective view of a sole cleaner 10
Fig. 4a:
View of the sole cleaner 10 from the direction of the hose connection 14
Fig. 5:
Longitudinal section through the sole cleaner 10 acc. Fig. 4
Fig. 6:
Perspective view of a core 17 for casting a sewer cleaning nozzle 1
Fig. 7:
Course of the axial pressure PK in the liquid jet

The view of a sewer cleaning nozzle 1 with a Pressurized water inlet opening 2, which has eight water channels 3 with the eight pressurized water outlet openings 4 is shown in Figs. 1 and 2. In Fig. 1 is the top view of the nozzle body and in Fig. 2nd a longitudinal section along the line X acc. Fig. 1 shown.

At the pressurized water inlet opening 2 with the hose connection 2 a , the eight water guides 3 slide, which form the connection to the pressurized water outlet openings 4. The pressurized water outlet openings 4 alternately have different radiation angles α 1 and α 2 and lie on different pitch circles T 1 and T 2 . The pressurized water outlet openings 4, which lie on the inner pitch circle T 1 , have a smaller radiation angle α 1 than the pressurized water outlet openings 4 on the outer pitch circle T 2 . The larger the angle of inclination and thus the angle of radiation α is chosen, the further the pitch circles T 1 and T 2 lie in the direction of the outer diameter D of the sewer cleaning nozzle 1. The number of pressurized water outlet openings 4 is determined in accordance with the desired requirement profile, and their radiation angle α can also be the same, so that they lie on a common pitch circle T. 6 or more pressurized water outlet openings are usually selected.

The radiation angle α can be between 5 ° and 40 °.

Depending on the nozzle dimensions (length and diameter) and the required radiation angle α is the deflection radius r the Water channels 3 to choose.

Since in this exemplary embodiment the pressurized water inlet opening 2 has a relatively large thread for the hose connection 2 a , its diameter decreases conically up to the water ducts 3 up to the diameter d E.

The water guides 3 have the largest possible deflection radius r and pass into the pressurized water inlet opening 2 in such a way that they all have the innermost point of their diameter d W1 on the nozzle axis A and in the center M and with the outer point of their diameter d W1 on the diameter dE of the pressurized water inlet opening 2 (dE = 2 xd W1 ). Since the water ducts 3 in the area of the transition to the pressurized water outlet opening 4 must have a defined diameter d W2 and the small diameter dE of the pressurized water inlet opening 2 is larger than 2 xd W2 , the water ducts 3 in their connection area to the pressurized water inlet opening 2 must have a diameter d W2 the diameter d W1 are expanded so that it is d W1 = dE / 2. The funnel-shaped reduction in diameter of the pressurized water inlet opening 2 and the subsequent narrowing of the diameter d W1 to the diameter d W2 of the water ducts 3 is to be designed such that a continuous and steady reduction in cross-section is formed, thereby avoiding turbulence in the liquid jet.

The pressurized water outlet openings 4 with the larger radiation angle α 1 project further into the sewer cleaning nozzle 1 than the pressurized water outlet openings 4 with the smaller radiation angle α 1 . As a result, the water ducts 3 merge into the pressurized water outlet openings 4 with the larger radiation angle α 2 in their radius r and lead to the pressurized water outlet openings 4 with the smaller radiation angle α 1 from the end of the radius r in a rectilinear region 3.G and at an angle α 1 . The rectilinear area 3.G and the pressurized water outlet openings 4 with the radiation wave α 2 connect tangentially to the radius r of the water channels 3. The pressurized water outlet openings 4 advantageously have 5 counterbores 4.1 and a thread 4.2 for screwing in radiation nozzles. The sectional view shows a pressurized water outlet opening 4 with and one without a spray nozzle 5. The water guides 3 bind to the pressurized water outlet openings 4 in such a way that no discontinuous cross-sectional changes are formed, in particular after the jet nozzles 5 have been screwed in.

The fact that the water guides 3 in the center of the Pressurized water inlet opening 2 begin, one inside the other pass over and in radius r, which is in its direction of curvature the pressurized water inlet opening 2 opposite to the outside, arises in the connection area the water guides 3 to the pressurized water inlet opening 2 with a conical water divider 6 segmented division. This water divider 6 is in 2a in plan view as a detail from FIG. 2nd shown. 2b shows a perspective view.

Another advantage of the invention is that Arrangement of an additional cavity 7 in the Sewer cleaning nozzle 1 (Fig. 3). This cavity 7 is located thereby in the direction of movement in front of the water channels 3 and is at its, the pressurized water inlet opening 2 opposite end with a screw plug 8 (shown schematically) closed. In this cavity can lead granulate, sand, water or a Sand / water mixture can be filled.

This makes it possible for the first time to vary the weight of the sewer cleaning nozzle 1 in accordance with the pump output. The sewer cleaning nozzle 1 in FIG. 3 has a relatively small pressurized water inlet opening 2 with a hose connection 2a in the form of a thread and also tapers to the beginning of the water guides 3. The water guides 3 do not have an enlarged diameter d W1 in the area of the connection to the pressurized water inlet opening 2 , but have the diameter d W2 over the entire length (d W1 = d W2 ).

In continuation of the idea of the new design the channel cleaning nozzles 1 can also use other tools for hydrodynamic cleaning of pipes and channels as a cast body with the new water supply and provided required with an additional cavity for Weight change can be equipped. 4 is a sole cleaner 10 shown in perspective.

The base body 11 of the sole cleaner 10 has Skid-shaped arranged parallel to each other on both sides Elements 12 on. In the base body 11 are the Pressurized water inlet opening 2, the water channels 3 and the pressurized water outlet openings 4.

The pressurized water inlet opening 2 is over the water channels 3 connected to the pressurized water outlet openings 4. The water ducts 3 close as in the Sewer cleaning nozzle 1 sliding against the pressurized water inlet opening 2 and go partially in this area into each other.

Two roll bars 13 ensure the independent Re-erecting the sole cleaner 10 at its Turn.

From the pressurized water inlet opening 2 in the base body 11 leads a tubular bent hose connector 14 to End of the sole cleaner 10, at which the pressurized water outlet openings 4 are located. This hose connector 14 is in the area of the pressurized water inlet opening 2 detachable with the base body 13 or inextricably linked. The detachable not shown here Connection can be made using a union nut can be ensured with the base body 13 is screwed. The permanent connection is made preferably by welding, the hose connection 14 additionally with its other end on the base body 13 is welded.

The pressurized water outlet openings 4 are not as in the sewer cleaning nozzle 1 arranged on partial circles, but lie in rows and in two planes E1 and E2 (see Fig. 4a). In each level El and E2 are 4 Pressurized water outlet openings provided. Here are the Pressurized water inlet openings 3 of the levels El and E2 staggered. The radiation angles are α each towards the sole and at the same time from the vertical center line M seen from the outside directed. According to the requirement profile the quantity of pressure water outlet openings varies become.

A longitudinal section of the sole cleaner 10 is shown in FIG. 5 shown.

It is located in front of the Water channels 3 a cavity 7, which has a bore 15a is open at the top, this opening preferably can be closed with a plug 15b.

This cavity 7 can also, as mentioned above described, are filled with ballast material 16.

The manufacture of the sewer cleaning nozzle 1 and Base body 11 of the sole cleaner 10 takes place preferably by pouring, as this method is the most Technologically most favorable variant for the production of the Tools is. The rust protection can be done by a Surface protection such as anti-rust paint or Galvanize or by using a stainless steel Cast alloy can be guaranteed. With the application an investment casting process it is possible to measure the wall roughness to reduce to less than 10 microns so that the Pipe friction coefficient is minimized.

In Fig. 6, the core 17 is a mold for the Water duct 3 of the sewer cleaning nozzle 1 shown.

The pressurized water outlet openings 4 and the water channels 3 are arranged in a circle, the water channels 3 run in a star shape in the center of the pressurized water inlet opening 2 together and slide in this over, the water channels 3 partially mesh. At the pressurized water inlet 2 close the water ducts 3 in a turning radius r whose direction of curvature and size is chosen so the lowest possible resistance in terms of flow arises.

The core of the sole cleaners is designed analogously, however, the areas for the pressurized water inlet are 2, the water channels 3 and the pressurized water outlet openings 4 arranged to each other as it future design of the basic body requires (pressurized water outlet openings not circular but in several levels, different beam angles, etc.). Through this Connection of the water channels 3 to the invention Pressurized water inlet opening 2, the large deflection radius r and the constant transition to the pressurized water outlet openings 4 becomes the continuous flow area extended or the axial pressure PK in the area of the core zone K and the axial pressure PH increased in the main area H (Fig. 7).

The cleaning effect is increased by increasing the axial pressure PK the hydrodynamic according to the invention Tools compared to conventional sewer cleaning nozzles or sole cleaners of a similar design significantly improved.

Claims (4)

  1. Hydrodynamic tool for cleaning pipes and ducts with a hose connection (2a) for a water hose as pressurised water inlet opening (2) and pressurised water outlet openings (4) on the side of the hose connection (2a), wherein the pressurised water inlet opening (2) is connected with the pressurised water outlet openings (4) by means of water guides (3) in the form of ducts with a continuously circular cross-section, wherein the water guides (3) exhibit a deflecting radius (r) located in the area adjoining the pressurised water inlet opening (2) and curving in the opposite direction to the pressurised water inlet opening (2), wherein the water guides (3) terminate in the pressurised water outlet openings (4) and wherein spray nozzles (5) can be screwed into the pressurised water outlet openings (4), characterised in that the water guides (3) bear slidingly on the diameter (dE) of the pressurised water inlet opening (2) and run radially outwards in an arc.
  2. Hydrodynamic tool according to claim 1, characterised in that with a hose connection (2a or 9) greater than 2 x dW1 the pressurised water inlet opening (2) tapers to the diameter 2 x dW1.
  3. Hydrodynamic tool according to claim 1 or 2, characterised in that the water guides (3) taper in their diameter (dW1) to a diameter (dW2) in the area of attachment of the pressurised water outlet openings (4).
  4. Hydrodynamic tool according to one of claims 1 to 3, characterised in that the reduction of the diameter (dW1) to the diameter (dW2) is completed in the area of the furthest position of the deflecting radius (r) in the direction of movement of the tool.
EP19960117817 1996-11-07 1996-11-07 Hydrodynamic tool for the cleaning of tubes and conduits Expired - Lifetime EP0841101B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19960117817 EP0841101B1 (en) 1996-11-07 1996-11-07 Hydrodynamic tool for the cleaning of tubes and conduits

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996507422 DE59607422D1 (en) 1996-11-07 1996-11-07 Hydrodynamic tool for cleaning pipes and channels
EP19960117817 EP0841101B1 (en) 1996-11-07 1996-11-07 Hydrodynamic tool for the cleaning of tubes and conduits

Publications (2)

Publication Number Publication Date
EP0841101A1 EP0841101A1 (en) 1998-05-13
EP0841101B1 true EP0841101B1 (en) 2001-08-01

Family

ID=8223376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960117817 Expired - Lifetime EP0841101B1 (en) 1996-11-07 1996-11-07 Hydrodynamic tool for the cleaning of tubes and conduits

Country Status (2)

Country Link
EP (1) EP0841101B1 (en)
DE (1) DE59607422D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IES20000201A2 (en) * 2000-03-14 2001-07-11 Jurgen Bock Pipe cleaning nozzle
CN202561120U (en) 2012-04-17 2012-11-28 北京科勒有限公司 Water separator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656694A (en) * 1970-12-10 1972-04-18 John A Kirschke Sewer cleaning chemical dispensing nozzles
DE3237583C2 (en) 1982-10-09 1992-12-10 Udo Th. 4740 Oelde De Thuener
SE446159B (en) 1984-05-24 1986-08-18 Bo Larsson Wandering hydrodynamic nozzle for tryckvattenrengoring of water, wastewater and storm water lines
DE3502916A1 (en) 1985-01-29 1986-07-31 Hans Ziegenhagen Device for cleaning a pipe, channel or the like, in particular sewer pipe, sewer or the like
DE19516780C1 (en) * 1995-05-11 1996-08-08 Kurt Hoerger Hydrodynamic cleaning nozzle for pipes and canals

Also Published As

Publication number Publication date
EP0841101A1 (en) 1998-05-13
DE59607422D1 (en) 2001-09-06

Similar Documents

Publication Publication Date Title
US10060695B2 (en) Firearm suppressor
EP0698417B2 (en) Sprinkler for dispensing a fluid
CN101551045B (en) Conduit
US4337788A (en) High pressure valve
US20170038113A1 (en) Arrangement, use of an arrangement, device, snow lance and method for producing ice nuclei and artificial snow
US7367518B2 (en) Descaling nozzle
ES2284784T3 (en) Towel of colada.
JP3478914B2 (en) Fluid injection nozzle and stress improvement processing method using the nozzle
ES2215506T3 (en) high pressure spray nozzle.
EP0604741B1 (en) Swirl nozzle for spraying a liquid
CA2443075C (en) Assembly of hollow torque transmitting sucker rods and sealing nipple with improved seal and fluid flow
EP0804309B1 (en) Submergent entry nozzle
US7431347B2 (en) Hollow sucker rod connection with second torque shoulder
US4629127A (en) Intermittent swirl type injection valve
US20030154849A1 (en) Gun barrel having a muzzle brake
KR100417140B1 (en) Fuel injection system
US6732821B2 (en) Profiled element for rotary drilling equipment and applications to components of a string of drill pipes
DE60221277T2 (en) Liquid drill head
ES2204774T3 (en) Nozzle spray nozzle.
KR100715390B1 (en) A method and a device for slowing down and disintegrating a plug of liquid plunging forward in a duct
DE60113770T2 (en) Cleaning nozzle and cleaning device
CN102535470B (en) Water jet sprayer assisting offshore platform in sinking pile
US6374858B1 (en) Vortex valves
US5848750A (en) Atomizing nozzle
EP1231326B1 (en) Pressure injection head

Legal Events

Date Code Title Description
AK Designated contracting states:

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT NL SE

17P Request for examination filed

Effective date: 19961107

RBV Designated contracting states (correction):

Designated state(s): DE ES FR GB IT NL SE

AKX Payment of designation fees

Free format text: DE ES FR GB IT NL SE

17Q First examination report

Effective date: 19990426

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010801

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010801

AK Designated contracting states:

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT NL SE

REF Corresponds to:

Ref document number: 59607422

Country of ref document: DE

Date of ref document: 20010906

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010918

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20011101

ET Fr: translation filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020228

26N No opposition filed
PGFP Postgrant: annual fees paid to national office

Ref country code: GB

Payment date: 20071102

Year of fee payment: 12

Ref country code: FR

Payment date: 20071029

Year of fee payment: 12

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20081107

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090731

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081107

PGFP Postgrant: annual fees paid to national office

Ref country code: DE

Payment date: 20100922

Year of fee payment: 15

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59607422

Country of ref document: DE

Effective date: 20120601

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120601