EP0563166B1 - Method and means for cooling hot explosive charges - Google Patents

Method and means for cooling hot explosive charges Download PDF

Info

Publication number
EP0563166B1
EP0563166B1 EP92901576A EP92901576A EP0563166B1 EP 0563166 B1 EP0563166 B1 EP 0563166B1 EP 92901576 A EP92901576 A EP 92901576A EP 92901576 A EP92901576 A EP 92901576A EP 0563166 B1 EP0563166 B1 EP 0563166B1
Authority
EP
European Patent Office
Prior art keywords
cooler
cartridges
cooling
tooth belt
air
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
EP92901576A
Other languages
German (de)
French (fr)
Other versions
EP0563166A1 (en
Inventor
Jan Hans Vestre
Paul-Johny Odberg
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.)
Dyno Industrier AS
Original Assignee
Dyno Industrier 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 Dyno Industrier AS filed Critical Dyno Industrier AS
Publication of EP0563166A1 publication Critical patent/EP0563166A1/en
Application granted granted Critical
Publication of EP0563166B1 publication Critical patent/EP0563166B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor

Definitions

  • the present invention relates to a method for cooling hot emulsion or slurry explosive charges, packaged in paper or plastic, to ambient temperature by means of air and/or also water.
  • the invention also comprises equipment for carrying out said cooling method.
  • the equipment comprising transport means for cartridges, cooling means and transport means for cooled cartridges to final packaging of the product.
  • explosive shall mean a detonable composition which can be either cap-sensitive or noncap-sensitive.
  • the explosive shall have a cylindrical form of any desired length and a diameter of generally 50 mm or less.
  • Well known emulsion explosives as described in US patents No. 4,356,044 and No. 4,322,258 are genenerally formed at elevated temperatures which are necessary to form the oxidizer salt(s) in water. Typical production temperatures are from 70 o C to 120 o C. It has been found, however, that once the emulsion has been formed at elevated temperature, it should be cooled rapidly to ambient temperature in order to preserve its long-term storage stability. Moreover, when such emulsion explosives are chemically gassed for sensitivity purposes, the formulated emulsion should be cooled quickly to minimize coalescence of the chemically generated gas bubbles within the emulsion.
  • hot emulsion explosives have been packaged in plastic cartridges.
  • Slurry explosives in general can be packaged in a sausage-like form as described in US patent No. 3,783,735.
  • the EP-patent application No. 0340980 describes explosives having no other packaging than a polymerized skin of one of the explosive components.
  • hot explosives can be packaged in paper cartridges as described in Norwegian patent No. 160770. Whatever packaging material is used, rapid cooling is desired and especially for paper cartridges where the cooling should be by means of air, this has proved to be difficult by known methods and means.
  • US patent No. 4,867,920 describes a method of cooling hot emulsion explosives which subsequent to cooling are packaged in paper cartridges having crimped ends. After formation the gassed emulsion explosive is formed into a continuous strip of generally constant width and length. The strip is then passed through a cooling bath to cool the explosive to a predetermined temperature. Then the desired length of the cooled emulsion explosive is cut and wrapped in paper to form a cartridge.
  • the cooling liquid is preferably water or an aqueous salt solution.
  • the object of the present invention was to develop a method and equipment to obtain rapid, efficient cooling by low energy consumption for various types of explosive charges whether they are packaged in paper or plastic. It shall be possible to obtain said cooling by using air at ambient temperature.
  • Another object was to obtain a safe, compact equipment which is flexible for switching from one type of charges to another and that the whole cooling process should be possible to inspect easily.
  • Increased cooling could also be obtained by installing water spray nozzles in the air cooler unit. This would be particularly advantageous for cooling of plastic cartridges, but it can also be used for paper cartridges when the paper allows some moisture without losing too much quality.
  • Cartridges filled with explosive were supplied to a tooth belt with cartridge carriers mounted thereon.
  • the tooth belt could be twisted from horizontal to vertical position without causing problems with the cartridges.
  • Such a belt could be utilized in a cooler to obtain maximum exposure of the cartridges to the cooling air and possible water spray therein.
  • a further advantage with such twistable belts was the possibility for easy input and output of the cartridges to and from the cooler.
  • a substantial length of the tooth belt was placed in a compact cooler to which cooling air was sucked or blown. A combination of blowing and sucking of the air will also be possible.
  • Nozzles for spraying water onto the cartridges could also be installed inside and/or outside the cooler.
  • At least one side panel of the cooler should be made of transparent material to allow inspection. The width of the cooler can be adjusted according to the length of the cartridges. To allow cleaning of the cooler at least one panel should be removable and the bottom of the cooler should be open.
  • Fig. 1 preparation of empty cartridges 2 from a roll of paper 1.
  • An explosive charge 3, for instance an emulsion matrix, and a gassing agent 4 are charged into the cartridge 2.
  • the thereby produced explosive cartridge 5 is then transferred to a double tooth belt 6 having cartridge carriers 13 mounted thereon. During this operation the belt 6 is in vertical position and is then twisted to horizontal position 7 before the belt 6 goes into the cooler 8. Cooled cartridges 5 are transferred to a conveyor 11 from which the cartridges 5 are delivered to packing boxes 12.
  • Figs. 2 and 3 the cooling equipment is shown more in detail.
  • the cartridges 5 are placed between cartridge carriers 13 on the vertical tooth belt 6 which then is twisted to horizontal position 7 before it enters the cooler 8.
  • the belt 6 with all the cartridges 5 is guided through the cooler 8 in such a way that maximum exposure of the cartridges 5 to the cooling air is obtained. This can of course be obtained in several ways and one arrangement of the belt 6 to the cooler 8 is shown in Fig. 2.
  • the belt is again twisted to vertical position 9 from which the cartridges 5 are released from the belt 6 by means 14 onto a conveyor 11.
  • Fig. 4 a double tooth belt 6 i shown in horizontal position with cartridge carriers 13 mounted thereon.
  • the cartridges 5 are each placed inside two carriers 13 and will be kept in position even when the belt 6 is twisted to vertical position.
  • Air is sucked through cooler 8 by fans 10. Only two such fans are shown, but transport of air through the cooler 8 can be obtained in several ways using various arrangements of fans and blowers.
  • the air cooling can be supplied by water sprays onto the cartridges 5 through nozzles (not shown) arranged inside and/or outside the cooler 8.
  • An emulsion matrix and gassing agent were fed into the paper cartridges having a diameter of 35 mm and a length of 200 mm. These cartridges were transferred to a double tooth belt in vertical position.
  • the tooth belt was twisted to horizontal position before it entered a cooler according to the invention.
  • the cooler had the following size: length: 5000 mm, height: 2500 mm and depth: 400 mm.
  • the total length of the tooth belt inside the cooler was 90 meters.
  • the present invention it became possible to cool explosive charges, even when they are wrapped in paper, in a rapid and economical way by primarily utilizing air at ambient temperature.
  • the method and equipment are highly flexible and can be used for various types of explosive charges whether they are packaged in paper or in plastic.
  • the cooling efficiency can easily be adjusted to required production rate, for example by regulating the flow and temperature of cooling air through the cooler.
  • the cooler itself is compact and needs little space. It can easily be placed in a standard 20 feet container and its energy consumption is low.
  • the cooler handles the product very gently, which allows open cartridges to go through the cooler. After cooling the cartridges can be closed with a star crimp or a finger fold.
  • the main advantages by using a tooth belt is that it can be twisted from a horizontal position in the cooler to a vertical position outside the cooler to ease the input and output of the cartridges to and from the cooler.

Abstract

The present invention relates to method and equipment for cooling hot explosive charges (5) of cylindrical form packaged in paper or plastic cartridges, to ambient temperatures by means of air or possibly also water. The hot charges (5) are supplied to a continuous vertical tooth belt (6) with cartridge carriers (13). The tooth belt (6) is twisted to horizontal position (7) before it enters a cooler (8) where the cartridges (5) are exposed to cooling air supplied to the cooler (8) at ambient temperature and subsequent to the cooling operation the belt (6) is twisted to vertical position (a) before the upper ends of the cartridges are closed. The equipment comprises a continuous tooth belt (6) having cartridge carrier means (13) mounted thereon for filled cartridges (5). The belt (6) runs through an air cooler (8) and is twistable from vertical to horizontal position (7) and further back to vertical position (9) upon leaving the cooler (8) which has an adjustable depth corresponding to the length of the cartridges (5) and means for guiding the belt (6) whereby its length inside the cooler (8) is substantially larger than the length of the cooler (8).

Description

  • The present invention relates to a method for cooling hot emulsion or slurry explosive charges, packaged in paper or plastic, to ambient temperature by means of air and/or also water. The invention also comprises equipment for carrying out said cooling method. The equipment comprising transport means for cartridges, cooling means and transport means for cooled cartridges to final packaging of the product.
  • The term "explosive" shall mean a detonable composition which can be either cap-sensitive or noncap-sensitive. The explosive shall have a cylindrical form of any desired length and a diameter of generally 50 mm or less.
  • Well known emulsion explosives as described in US patents No. 4,356,044 and No. 4,322,258 are genenerally formed at elevated temperatures which are necessary to form the oxidizer salt(s) in water. Typical production temperatures are from 70oC to 120oC. It has been found, however, that once the emulsion has been formed at elevated temperature, it should be cooled rapidly to ambient temperature in order to preserve its long-term storage stability. Moreover, when such emulsion explosives are chemically gassed for sensitivity purposes, the formulated emulsion should be cooled quickly to minimize coalescence of the chemically generated gas bubbles within the emulsion.
  • Usually hot emulsion explosives have been packaged in plastic cartridges. Slurry explosives in general can be packaged in a sausage-like form as described in US patent No. 3,783,735. Further, the EP-patent application No. 0340980 describes explosives having no other packaging than a polymerized skin of one of the explosive components. Finally, hot explosives can be packaged in paper cartridges as described in Norwegian patent No. 160770. Whatever packaging material is used, rapid cooling is desired and especially for paper cartridges where the cooling should be by means of air, this has proved to be difficult by known methods and means.
  • US patent No. 4,867,920 describes a method of cooling hot emulsion explosives which subsequent to cooling are packaged in paper cartridges having crimped ends. After formation the gassed emulsion explosive is formed into a continuous strip of generally constant width and length. The strip is then passed through a cooling bath to cool the explosive to a predetermined temperature. Then the desired length of the cooled emulsion explosive is cut and wrapped in paper to form a cartridge. The cooling liquid is preferably water or an aqueous salt solution. Though this method allows packaging of the emulsion explosive in paper cartridges, the cooling and gassing process must be finished before cartridging. In order to maintain a high production capacity, this method also requires a rather long cooling bath, approximately 100 m or more.
  • The object of the present invention was to develop a method and equipment to obtain rapid, efficient cooling by low energy consumption for various types of explosive charges whether they are packaged in paper or plastic. It shall be possible to obtain said cooling by using air at ambient temperature.
  • Another object was to obtain a safe, compact equipment which is flexible for switching from one type of charges to another and that the whole cooling process should be possible to inspect easily.
  • Rapid cooling of explosives packaged in paper was considered to be the main problem and it was believed to be best performed by using air. The three most important factors for obtaining good air-cooling were found to be:
    • 1) cooling time
    • 2) cooling air temperature
    • 3) cooling air velocity at the surface of the cartridges
    Regarding factor 1), the cooling time will depend on the production rate, the charge diameter and the physical size of the cooler. With a production rate of for instance 100 cartridges per minute and a cooler being 5 m long and 2.5 m high one should be able to cool cartridges having a diameter of 35 mm within 15 minutes.
  • Regarding factors 2) and 3), the cooling will be more efficient the lower the temperature of the cooling air is. However, the inventors found that air of ambient temperature could be used without pre-cooling provided the air was efficiently used. In order to obtain optimal heat transfer from the hot cartridges to the cooling air, it was found that a combination of high air speed at the surface of the cartridges and high degree of exposure of these to the cooling air with minimal shielding would result in desired heat transfer.
  • Increased cooling could also be obtained by installing water spray nozzles in the air cooler unit. This would be particularly advantageous for cooling of plastic cartridges, but it can also be used for paper cartridges when the paper allows some moisture without losing too much quality.
  • A new method and equipment were then designed in view of the above stated pre-requisite. Cartridges filled with explosive were supplied to a tooth belt with cartridge carriers mounted thereon. The tooth belt could be twisted from horizontal to vertical position without causing problems with the cartridges. Such a belt could be utilized in a cooler to obtain maximum exposure of the cartridges to the cooling air and possible water spray therein. A further advantage with such twistable belts was the possibility for easy input and output of the cartridges to and from the cooler. A substantial length of the tooth belt was placed in a compact cooler to which cooling air was sucked or blown. A combination of blowing and sucking of the air will also be possible. Nozzles for spraying water onto the cartridges could also be installed inside and/or outside the cooler. At least one side panel of the cooler should be made of transparent material to allow inspection. The width of the cooler can be adjusted according to the length of the cartridges. To allow cleaning of the cooler at least one panel should be removable and the bottom of the cooler should be open.
  • The special features of the invention are as defined by the attached claims.
  • The invention will be further explained with reference to the drawings.
    • Fig. 1
    shows a flow-sheet of the process according to the invention from cartridging to packaging of the cooled cartridges.
    Fig. 2
    shows a side view of the cooling equipment according to the invention.
    Fig. 3
    shows the cooling equipment of Fig. 2 viewed from above.
    Fig. 4
    shows cartridge carriers on a tooth belt.
  • In Fig. 1 is shown preparation of empty cartridges 2 from a roll of paper 1. An explosive charge 3, for instance an emulsion matrix, and a gassing agent 4 are charged into the cartridge 2. The thereby produced explosive cartridge 5 is then transferred to a double tooth belt 6 having cartridge carriers 13 mounted thereon. During this operation the belt 6 is in vertical position and is then twisted to horizontal position 7 before the belt 6 goes into the cooler 8. Cooled cartridges 5 are transferred to a conveyor 11 from which the cartridges 5 are delivered to packing boxes 12.
  • In Figs. 2 and 3 the cooling equipment is shown more in detail. The cartridges 5 are placed between cartridge carriers 13 on the vertical tooth belt 6 which then is twisted to horizontal position 7 before it enters the cooler 8. The belt 6 with all the cartridges 5 is guided through the cooler 8 in such a way that maximum exposure of the cartridges 5 to the cooling air is obtained. This can of course be obtained in several ways and one arrangement of the belt 6 to the cooler 8 is shown in Fig. 2. Subsequent to the cooling operation the belt is again twisted to vertical position 9 from which the cartridges 5 are released from the belt 6 by means 14 onto a conveyor 11.
  • In Fig. 4 a double tooth belt 6 i shown in horizontal position with cartridge carriers 13 mounted thereon. The cartridges 5 are each placed inside two carriers 13 and will be kept in position even when the belt 6 is twisted to vertical position.
  • Air is sucked through cooler 8 by fans 10. Only two such fans are shown, but transport of air through the cooler 8 can be obtained in several ways using various arrangements of fans and blowers. For additional cooling the air cooling can be supplied by water sprays onto the cartridges 5 through nozzles (not shown) arranged inside and/or outside the cooler 8.
    • Example
  • An emulsion matrix and gassing agent were fed into the paper cartridges having a diameter of 35 mm and a length of 200 mm. These cartridges were transferred to a double tooth belt in vertical position. The tooth belt was twisted to horizontal position before it entered a cooler according to the invention. The cooler had the following size: length: 5000 mm, height: 2500 mm and depth: 400 mm. The total length of the tooth belt inside the cooler was 90 meters.
  • 200 m³ air/min at an ambient temperature of 25oC was sucked through the cooler. Inlet temperature of the explosive charges was 80oC and they left the cooler with a temperature of 32oC at the centre core of the cartridges.
  • With production rate of 100 cartridges per min and a physical size of the cooler as stated above, the cooling time of the cartridges was 15 minutes.
  • By the present invention it became possible to cool explosive charges, even when they are wrapped in paper, in a rapid and economical way by primarily utilizing air at ambient temperature. The method and equipment are highly flexible and can be used for various types of explosive charges whether they are packaged in paper or in plastic. The cooling efficiency can easily be adjusted to required production rate, for example by regulating the flow and temperature of cooling air through the cooler.
  • The cooler itself is compact and needs little space. It can easily be placed in a standard 20 feet container and its energy consumption is low.
  • High degree of safety is attained because all moving parts are plastic against metal, and by using transparent plastic walls around the cooler visual inspection is easy. The cooler is easy to clean, because one side of the transparent plastic walls can be removed and its bottom is completely open.
  • The cooler handles the product very gently, which allows open cartridges to go through the cooler. After cooling the cartridges can be closed with a star crimp or a finger fold.
  • The main advantages by using a tooth belt is that it can be twisted from a horizontal position in the cooler to a vertical position outside the cooler to ease the input and output of the cartridges to and from the cooler.

Claims (9)

  1. Method of cooling hot emulsion or slurry explosive charges, having a cylindrical form of desired length and being packaged in paper or plastic cartridges, to ambient temperatures by means of air or possibly also water,
    characterized in that
    the hot charges are supplied to a continuous vertical tooth belt with cartridge carriers and that the tooth belt is twisted to horizontal position before it enters a cooler where the cartridges are exposed to cooling air supplied to the cooler at ambient temperature and that the tooth belt subsequent to the cooling operation is twisted to vertical position before the upper ends of the cartridges are closed and the cooled cartridges are released from the tooth belt onto a conveyor for transportation to final packaging of the cartridges.
  2. Method according to claim 1,
    characterized in that
    desired cooling is obtained by regulating the air flow through the cooler and/or the speed of the tooth belt.
  3. Method according to claim 1,
    characterized in that
    the outdoor ambient air supplied to the cooler or the ambient air is pre-cooled.
  4. Method according to claim 1,
    characterized in that
    water is sprayed onto the cartridges inside and/or outside the cooler.
  5. Equipment for carrying out the method according to claims 1-4, comprising transport means for filled cartridges (5), cooling means (8) and transport means (11) for cooled cartridges (5) to storage/transport boxes (12),
    characterized in that
    the transport means for filled cartridges (5) comprises a continuous tooth belt (6) having cartridge carrier means (13) mounted thereon and that the tooth belt (6) which runs through an air cooler (8) is twistable from vertical to horizontal position (7) and further back to vertical position (9) upon leaving the cooler (8).
  6. Equipment according to claim 5,
    characterized in that
    the cooler (8) has an adjustable depth corresponding to the length of the cartridges (5) and means for guiding the tooth belt (6) whereby its length inside the cooler (8) is substantially larger than the length of the cooler (8).
  7. Equipment according to claim 5,
    characterized in that
    the cooler (8) comprises suction fans (10) and/or blowers for transporting air through the cooler (8).
  8. Equipment according to claim 5,
    characterized in that
    water spray nozzles are arranged outside and/or inside the cooler (8) for spraying water onto cartridges (5).
  9. Equipment according to claim 5,
    characterized in that
    the continuous tooth belt (6) runs over cartridge releasing means (14) for discharging the cartridges to a conveyor (11).
EP92901576A 1990-12-21 1991-12-20 Method and means for cooling hot explosive charges Expired - Lifetime EP0563166B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO905584A NO171310C (en) 1990-12-21 1990-12-21 PROCEDURE AND EQUIPMENT FOR COOLING HOT EXPLOSIVE CHARGES
NO905584 1990-12-21
PCT/NO1991/000158 WO1992011222A1 (en) 1990-12-21 1991-12-20 Method and means for cooling hot explosive charges

Publications (2)

Publication Number Publication Date
EP0563166A1 EP0563166A1 (en) 1993-10-06
EP0563166B1 true EP0563166B1 (en) 1995-03-08

Family

ID=19893748

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92901576A Expired - Lifetime EP0563166B1 (en) 1990-12-21 1991-12-20 Method and means for cooling hot explosive charges

Country Status (5)

Country Link
EP (1) EP0563166B1 (en)
DE (1) DE69108054T2 (en)
ES (1) ES2070629T3 (en)
NO (1) NO171310C (en)
WO (1) WO1992011222A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001023326A1 (en) * 1999-09-28 2001-04-05 Bulk Mining Explosives (Pty.) Ltd. Blasting cartridges

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1109706A (en) * 1980-02-04 1981-09-29 Joseph R. Bonnycastle Explosive booster manufacture
DE3215858A1 (en) * 1982-04-29 1983-11-17 Diehl GmbH & Co, 8500 Nürnberg Crystallising device for explosive
NO160770C (en) * 1986-10-03 1989-05-31 Dyno Industrier As PROCEDURE AND DEVICE FOR PATTERNING OF ADHESIVE EXPLOSIVES.
US4867920A (en) * 1988-10-14 1989-09-19 Ireco Incorporated Emulsion explosive manufacturing method

Also Published As

Publication number Publication date
WO1992011222A1 (en) 1992-07-09
NO171310B (en) 1992-11-16
EP0563166A1 (en) 1993-10-06
DE69108054D1 (en) 1995-04-13
DE69108054T2 (en) 1995-07-06
NO171310C (en) 1993-02-24
NO905584L (en) 1992-06-22
NO905584D0 (en) 1990-12-21
ES2070629T3 (en) 1995-06-01

Similar Documents

Publication Publication Date Title
EP0605147B1 (en) Apparatus and method of freezing food
US3723035A (en) Apparatus for forming hot melt adhesives into a readily packageable form
US3036533A (en) Method and apparatus for coating food articles
ATE133625T1 (en) DEVICE FOR LOADING A PACKAGING RECEPTACLE, E.G. AN OPEN BOX
US3277657A (en) Method and apparatus for flash freezing various products
EP0109210B1 (en) Freezer
US3039276A (en) Bulk freezer
JPS563215A (en) Method and device for truing up cargo
IT1136296B (en) PLANT TO FILL FRUIT OR VEGETABLES UNIFORMLY
EP0563166B1 (en) Method and means for cooling hot explosive charges
US3230860A (en) Machine for conveying meat slices through brine
JPS60199357A (en) Apparatus for weighing and packing of noodle in frame
US3096627A (en) Apparatus for quick freezing of bakery goods
JPS565062A (en) Disentanglement of noodles
US3567017A (en) Flotation separatins apparatus and method
US2723645A (en) Apparatus to provide meat with a surface glaze of ice
JPS6238220B2 (en)
US4087265A (en) Apparatus and method for chilling seafood products
ITMI20012159A1 (en) EQUIPMENT FOR CONTINUOUS PASTEURIZATION OF MEAT AND FOOD PRODUCTS
US3393629A (en) Curing apparatus
EP0310415A2 (en) Device for use in food product
JPS5762115A (en) Automatic feeder
JPS56161217A (en) Taking-out device for conical article
JPS5343371A (en) Assorting apparatus in use of air jet
JPS56152757A (en) Continuous painting and baking device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19930601

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE ES FR GB GR IT LI NL SE

17Q First examination report despatched

Effective date: 19930302

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE ES FR GB GR IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

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

Effective date: 19950308

Ref country code: BE

Effective date: 19950308

REF Corresponds to:

Ref document number: 69108054

Country of ref document: DE

Date of ref document: 19950413

ITF It: translation for a ep patent filed

Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2070629

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3016301

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19991207

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19991208

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19991215

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19991220

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19991221

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19991229

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000103

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

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

Effective date: 20001220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

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

Effective date: 20001221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

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

Effective date: 20001231

Ref country code: GR

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

Effective date: 20001231

Ref country code: CH

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

Effective date: 20001231

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

Effective date: 20001220

EUG Se: european patent has lapsed

Ref document number: 92901576.6

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

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

Effective date: 20010831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

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

Effective date: 20011002

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

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

Effective date: 20011221

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20020112

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

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

Effective date: 20051220