EP0482720B1 - Method and device for dosing, mixing and applying a specific mortar - Google Patents

Method and device for dosing, mixing and applying a specific mortar Download PDF

Info

Publication number
EP0482720B1
EP0482720B1 EP91202749A EP91202749A EP0482720B1 EP 0482720 B1 EP0482720 B1 EP 0482720B1 EP 91202749 A EP91202749 A EP 91202749A EP 91202749 A EP91202749 A EP 91202749A EP 0482720 B1 EP0482720 B1 EP 0482720B1
Authority
EP
European Patent Office
Prior art keywords
dosing
silo
dosing unit
fractions
fraction
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
EP91202749A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0482720A1 (en
Inventor
Hendricus Antonius Petrus Kouwenhoven
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.)
Bv Grint- En Zandexploitatiemaatschappij V/h Gebrs Smals
Original Assignee
Bv Grint- En Zandexploitatiemaatschappij V/h Gebrs Smals
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 Bv Grint- En Zandexploitatiemaatschappij V/h Gebrs Smals filed Critical Bv Grint- En Zandexploitatiemaatschappij V/h Gebrs Smals
Priority to EP95200067A priority Critical patent/EP0657261B1/en
Publication of EP0482720A1 publication Critical patent/EP0482720A1/en
Application granted granted Critical
Publication of EP0482720B1 publication Critical patent/EP0482720B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0404—Proportioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/714—Feed mechanisms for feeding predetermined amounts
    • B01F35/7141—Feed mechanisms for feeding predetermined amounts using measuring chambers moving between a loading and unloading position, e.g. reciprocating feed frames

Definitions

  • the invention relates to a method for dosing, mixing and applying a mortar suitable for pointing, bricklaying and/or floors and consisting of at least a bonding agent or binder such as a cement and a sand fraction in addition to water, in which method use is made of at least one silo provided with compartments for each fraction, and wherein the fractions are dosed volumetrically by a dosing unit having a chamber of predetermined volume arranged for each fraction, the different volumes of fraction are mixed with water to a batch suitable for applying of the mortar.
  • volumetric dosing is that during discharge from the silo into the volumetric dosing chambers some fractions can take on a different specific weight per batch. This occurs because of the comparatively small flexibility of the granules in the fraction, whereby particularly in the case of cement much too little may end up in the batch compared to the sand, which has an adverse effect on the quality of the ultimately obtained mortar.
  • the invention has for its object to improve the above method by measuring the total weight of the fractions present in the dosing chambers during dosing and using these readings as control signal for discharging the fractions out of the dosing chambers.
  • the invention proposes to also measure the zero weight of the metering chambers, only after reaching which the mixing of the fractions can take place and the dosing unit be released for a new batch.
  • the invention further relates to a device for performing the method according to the invention.
  • the device is distinguished in that use is made of at least one silo provided with compartments for each fraction, a dosing unit arranged beneath the silo with a chamber of predetermined volume arranged for each fraction and an intake valve arranged between silo and dosing unit and an outlet valve arranged beneath the dosing unit, in addition to a control circuit for opening and closing the intake and outlet valves in turn, wherein the invention proposes to provide the control circuit with a measuring means for determining the maximum filling weight of the dosing unit and the zero weight thereof, this such that the intake valve is closed when the maximum filling weight is reached and the outlet valve is closed when the zero weight is reached.
  • the dosing unit is provided with a shaking or vibrating means, for example an eccentric masses motor.
  • the zero weight and the maximum weight of the dosing unit can be determined herewith in simple manner and used as signal for the control circuit.
  • the invention proposes to use a time controlled feed pump of determined capacity.
  • the inlet of this feed pump is connected to the outlet of a water tank with level control. Due to this level control the pressure at the inlet of the feed pump is constant or virtually constant so that a precisely adjustable quantity of water can be supplied to the mixing device.
  • the control circuit is also provided with a signal generator at the spray nozzle for applying the finished mortar so that a new batch can be supplied each time by restarting the dosing cycle.
  • the dosing unit consists of a housing slidable relative to the outlet of the silo and provided with a number of dosing chambers and with a valve closing the outlet opening of the silo, wherein beneath the slidable housing is a fixed base plate having a passage opening moved relative to the outlet opening of the silo for discharging the fractions into the dosing housing.
  • the device according to fig. 1 consists of a silo 1 which is divided into two compartments by a partition 2.
  • the smaller compartment 3 can for instance be used for storing cement, while the compartment 4 may contain sand. It will be apparent that within the scope of the invention more partitions 2 can be arranged in the silo 1 if more fractions are required for the mortar, or that more than one silo can be used.
  • a dosing unit 5 Arranged under the silo 1 is a dosing unit 5, wherein an in-feed valve 6 is slidable between the dosing unit 5 and silo 1 and an outlet valve 7 is slidable beneath the dosing unit 5 such that the passage between silo 1 and dosing unit 5 is respectively released and closed and on the other side the outlet opening of the dosing unit 5 is released and closed by the valve 7.
  • Control of the valves is carried out by a central control unit 8 which is further elucidated below.
  • a mixing device 9 Connecting onto the underside of the dosing unit is a mixing device 9 which can be of random type but consists here of a trough-like housing 10 in which a shaft 11 is rotatably received.
  • the shaft 11 is set into rotation by a motor 12, wherein the shaft 11 is provided with stirring and transporting members 13.
  • the trough-like housing 10 is embodied with an outlet opening 14 which connects onto a funnel-shaped inlet opening 15 of a transporting pump 16.
  • the latter has an outlet 17 onto which is connected a flexible hose 18 which leads to the spray nozzle 19 of randomly adapted form.
  • the spray nozzle 19 consists here of a pistol-grip 20 with dosing pipe 21 suitable for applying pointing mortar in the joint V of a brick wall M.
  • This embodiment of the spray nozzle 19 is purely random and can be substituted by nozzles for feeding floor mortar onto a pre-cast underfloor or for supplying bricklaying mortar when arranging bricks for a wall.
  • a water tank 25 is arranged which is connected to a water main 26, whereof a mains pressure conduit 27 leads to a level control 28.
  • the drain opening 29 of the tank 25 is connected to a pump 30, the outlet of which leads via tube 31 to the funnel 15 of the mortar pump 16.
  • a central control unit 8 is embodied for this purpose with a measuring means 40, for instance in the form of a rack bar, see fig. 2, which is arranged between the wall of the silo 1 and the wall of dosing unit 5.
  • the rack bar can be of random form and to increase accuracy can be embodied with one or more strain gauges 41 which are freely available commercially.
  • a determined maximum weight and a zero weight of the dosing unit 5 can be determined with the strain gauges 41, wherein the total dosing unit 5 can be suspended from three or more rack bars 40, which bars are distributed uniformly over the periphery thereof, or from one bar 40, wherein the upper flange 42 of the dosing unit is suspended pivotally at 43 on the lower flange 44 of the silo.
  • valves 6 and 7 are operated for instance by respective control cylinders 45 and 46 of pneumatic or hydraulic type which are actuated by the central control unit 8. Finally, a control signal can be generated with the spray nozzle 19 via line 35 to the central control unit 8.
  • the control unit 8 is connected via line 36 to the motor 12 and the motor 30 via the time switch 37.
  • Motor 16 is energized by means of the handgrip of the spray nozzle 19.
  • Dosing according to the invention takes place as follows: Assuming that the central control unit 8 has received a signal from the spray nozzle 19 that the dosing cycle can begin, valve 6 is opened by means of the control cylinder 45. From the compartments of silo 1 a quantity of cement and sand fraction passes into the dosing chambers of dosing unit 5, whereafter, when a maximum weight has been reached which is detected via the rack bar 40, the valve 6 is returned to the closing position via the control cylinder 45. The outlet valve 7 can then be opened via cylinder 46 whereby the content of the dosing unit 5 passes into the mixing unit 9, after the motor 12 has already been started beforehand by the central control unit 8.
  • the time clock 37 provides for a delayed starting of the pump 30 which, using the same time clock 37, is only set into operation for a predetermined time. A fixed volume of water is specified for this time, which volume is not influenced by the inlet pressure of the pump 30, since this is held constant in view of the small difference in liquid level in the tank 25. After draining a quantity water for a batch of mortar the water is immediately topped up owing to the level control 28.
  • a level detecting means 50 in the funnel 15 finally provides for zero setting of the central control unit 8 so that the total cycle can begin once again following the signal from the spray nozzle 19.
  • the pump motor 16 is controlled by the spray nozzle 19 independently of the central control unit 8.
  • the central control unit 8 can also be provided with a protection during the zero measuring of the dosing unit 5 such that, after reaching the zero weight, the valve 7 is returned to the closed position. Thus ensured is that the dosing unit 5 is completely emptied.
  • Proposed in fig. 2 is to embody the dosing unit 5 with a vibrating or eccentric mass motor 51, which is preferably arranged on the side of the cement dosing chamber.
  • a vibrating or eccentric mass motor 51 which is preferably arranged on the side of the cement dosing chamber.
  • Fig. 4 shows an embodiment wherein the dosing unit consists of a dosing housing 55 provided with three dosing chambers 56. The latter connect onto the compartment silo 1 which is provided here with two partitions P'. Because the partitions are arranged at a determined position in the dosing housing 55, the content of the dosing chamber 56 in the dosing housing 55 will differ depending on the desired volumetric mixing of the fractions for the mortar.
  • the dosing housing 55 is closed on the underside by a fixed base plate 57 which leads to a passage opening 58 of a downward oriented funnel 59.
  • the funnel 59 connects for instance onto a mixing device 9 from fig. 1.
  • the dosing housing 55 is also provided with a closing plate 60 fixed thereto, the breadth of which corresponds with the breadth of the outlet opening of the silo 1 and the length of which corresponds with the length of travel of the dosing housing 55 when this can slide reciprocally in the direction of arrow P1 from the position drawn in fig. 3 to the position above the passage opening 58.
  • the sliding of the housing 55 can be carried out in random manner and is depicted here as a gear rack and gear wheel drive, wherein the gear rack 61 is fixed to the valve 60 and the gear wheel 62 is driven by a reversible motor 63.
  • Fig. 4 shows an embodiment which corresponds substantially with that of fig. 3, with the understanding that in the base plate 57 is arranged a measuring device 64 which can generate a signal to the central control unit 8 such that only when a determined filling weight is reached in the dosing housing 55 is the displacing of the housing 55 started by the starting signal for the motor 63 from the central control unit 8. Mixing and applying will otherwise take place in the manner as described with reference to fig. 1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Road Paving Machines (AREA)
EP91202749A 1990-10-24 1991-10-23 Method and device for dosing, mixing and applying a specific mortar Expired - Lifetime EP0482720B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95200067A EP0657261B1 (en) 1990-10-24 1991-10-23 Device for dosing and mixing fractions for a specific mortar

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002321 1990-10-24
NL9002321A NL9002321A (nl) 1990-10-24 1990-10-24 Werkwijze en inrichting voor het doseren, mengen en aanbrengen van een bijzondere specie.

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP95200067A Division EP0657261B1 (en) 1990-10-24 1991-10-23 Device for dosing and mixing fractions for a specific mortar
EP95200067.7 Division-Into 1995-01-12

Publications (2)

Publication Number Publication Date
EP0482720A1 EP0482720A1 (en) 1992-04-29
EP0482720B1 true EP0482720B1 (en) 1995-07-19

Family

ID=19857873

Family Applications (2)

Application Number Title Priority Date Filing Date
EP91202749A Expired - Lifetime EP0482720B1 (en) 1990-10-24 1991-10-23 Method and device for dosing, mixing and applying a specific mortar
EP95200067A Expired - Lifetime EP0657261B1 (en) 1990-10-24 1991-10-23 Device for dosing and mixing fractions for a specific mortar

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP95200067A Expired - Lifetime EP0657261B1 (en) 1990-10-24 1991-10-23 Device for dosing and mixing fractions for a specific mortar

Country Status (6)

Country Link
EP (2) EP0482720B1 (da)
AT (2) ATE125194T1 (da)
DE (2) DE69132393D1 (da)
DK (1) DK0482720T3 (da)
ES (1) ES2074649T3 (da)
NL (1) NL9002321A (da)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI116632B (fi) * 1998-10-30 2006-01-13 Junttan Oy Menetelmä maan stabiloimiseksi ja laitteisto menetelmän soveltamiseksi
CN102848472A (zh) * 2012-09-27 2013-01-02 徐州天地重型机械制造有限公司 干混砂浆站外加剂计量装置
CN108996261A (zh) * 2018-07-06 2018-12-14 宁波松科磁材有限公司 新能源汽车磁钢原料配料设备的自动补料仓
CN109016163A (zh) * 2018-08-14 2018-12-18 安徽中联九通机械设备有限公司 一种混凝土搅拌进料控制系统
CN110982309B (zh) * 2019-12-25 2021-07-30 上海天下无漏科技集团有限公司 一种防水涂料及其加工装置与生产工艺
CN111660434B (zh) * 2020-05-14 2021-04-02 湖南大学 一种实验室用小型混凝土试配系统
CN111851959B (zh) * 2020-07-07 2021-12-07 台州佐岛机械有限公司 一种基于整木家居的木质地板装配用涂缝装置
CN112264935B (zh) * 2020-10-29 2021-11-26 鄂州市天信工贸股份有限公司 一种铝合金管材喷砂机的喷砂机构
CN112779842B (zh) * 2020-12-09 2023-08-04 创际建工集团有限公司 一种道路施工用防裂贴平铺装置
CN112875024B (zh) * 2021-01-11 2022-05-17 常州机电职业技术学院 一种基于制药用的多功能配药罐
CN113246300A (zh) * 2021-05-21 2021-08-13 贵州互惠混凝土机械服务有限公司 一种便于组装和搬运的一体式混凝土搅拌站
CN113997445B (zh) * 2021-09-23 2023-06-27 成都铭川新材料科技有限公司 一种橡胶类高分子材料生产用混炼设备
CN113893782B (zh) * 2021-10-22 2024-04-02 会同县凯润建材有限公司 一种水泥制造的硫中和处理设备
CN115106010B (zh) * 2022-06-08 2024-02-13 湖南中联重科混凝土机械站类设备有限公司 制砂机的主机入料调节机构、方法及制砂装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1378572A (en) * 1919-12-26 1921-05-17 American Building Products Com Measuring device

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE364942C (de) * 1922-12-05 E W Stoll Vorrichtung zur gleichzeitigen Zuteilung verschiedener Gueter in einstellbarem Mengenverhaeltnis
BE628847A (da) *
US1914713A (en) * 1929-05-04 1933-06-20 Kwik Mix Concrete Mixer Co Vibrator
GB392007A (en) * 1932-06-27 1933-05-11 Fuller Co Improvements in feeding devices for powdered or granular material
US3002575A (en) * 1956-03-05 1961-10-03 Koehring Co Multiple material batcher control
FR1193639A (fr) * 1956-10-27 1959-11-04 Egli & Erbes Dispositif de dosage gravimétrique pour produits granulaires
NL97745C (da) * 1957-05-14
US2922610A (en) * 1957-11-29 1960-01-26 Wisconsin Electrical Mfg Compa Automatic control for material distribution
US3058622A (en) * 1958-01-14 1962-10-16 Ballestra Mario Device for continuously measuring, mixing and de-aerating materials fed to process plant
DE1424604A1 (de) * 1960-10-03 1968-10-10 Premier Portland Cement Compan Transportabler Zementsilo
US3220499A (en) * 1965-01-25 1965-11-30 John I Beresic Aggregate consolidating and sacking machine
US3697054A (en) * 1970-12-10 1972-10-10 Frank G Moratschek Machine for making batches of mortar
GB1317412A (en) * 1971-09-06 1973-05-16 Anchor Hocking Corp Mixing and metering apparatus
US3746313A (en) * 1971-11-10 1973-07-17 R Weeks Concrete measuring and mixing apparatus
FR2221087A1 (en) * 1973-03-16 1974-10-11 Geffe Thomas Combined mixer and distributor - for making up animal feed mixtures in correct proportions
DE3102611C2 (de) * 1981-01-27 1984-07-26 Liebherr-Mischtechnik GmbH, 7953 Bad Schussenried Verfahren zur Steuerung der Mischung und des Austrags einer Mischung in einer Dosier- und Mischanlage
US4556323A (en) * 1984-03-07 1985-12-03 Elkin Luther V Concrete mixing and distribution equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1378572A (en) * 1919-12-26 1921-05-17 American Building Products Com Measuring device

Also Published As

Publication number Publication date
ATE195899T1 (de) 2000-09-15
DE69111368D1 (de) 1995-08-24
NL9002321A (nl) 1992-05-18
ATE125194T1 (de) 1995-08-15
DE69111368T2 (de) 1996-01-04
EP0657261B1 (en) 2000-08-30
EP0482720A1 (en) 1992-04-29
ES2074649T3 (es) 1995-09-16
EP0657261A1 (en) 1995-06-14
DK0482720T3 (da) 1995-09-11
DE69132393D1 (de) 2000-10-05

Similar Documents

Publication Publication Date Title
EP0482720B1 (en) Method and device for dosing, mixing and applying a specific mortar
US11813771B2 (en) Portable cement mixing apparatus with precision controls
US5149192A (en) System for mixing cementitious construction materials
US9180605B2 (en) Volumetric concrete mixing method and apparatus
US4436429A (en) Slurry production system
US4397561A (en) Slurry production system
US4889433A (en) Programmable apparatus and method for delivering microingredient feed additives to animals by weight
US4733971A (en) Programmable weight sensitive microingredient feed additive delivery system and method
US5340211A (en) Programmable apparatus and method for delivering microingredient feed additives by weight
US4436431A (en) Slurry production system
USRE34776E (en) Programmable apparatus and method for delivering microingredient feed additives to animals by weight
US4895450A (en) Weighing, measuring, and mixing apparatus for lightweight concrete
CN109352821B (zh) 混凝土配料、搅拌、输送系统及其控制方法
EP2731768B1 (en) Arrangement and method for handling cement mortar
JPS58222257A (ja) モルタルの調製方法及び装置
EP1640061B1 (en) Process for obtaining a compound to be used for making concrete screed and relevant mixing device
US6361199B1 (en) Cement mixing apparatus and method
JP4144747B2 (ja) 骨材及び水の計量装置並びにそれを用いたセメント系流動固化材の吹付けシステム
CA1336200C (en) Programmable weight sensitive microingredient feed additive delivery system and method
EP0398401B1 (en) Installation for preparing and transporting mortar on a building site
JP3250589B2 (ja) 吹付機用自動プラント
JP2567709Y2 (ja) セメント混合攪拌装置
JPS5936291Y2 (ja) ２槽式コンクリ−ト類吹付け機
JP4099626B2 (ja) コンクリート材料の計量装置
RU1779607C (ru) Устройство дл приготовлени , транспортировани и укладки газозолобетонной смеси

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

AK Designated contracting states

Kind code of ref document: A1

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

17P Request for examination filed

Effective date: 19920714

17Q First examination report despatched

Effective date: 19930806

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: STUDIO INGG. FISCHETTI & WEBER

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 125194

Country of ref document: AT

Date of ref document: 19950815

Kind code of ref document: T

XX Miscellaneous (additional remarks)

Free format text: TEILANMELDUNG 95200067.7 EINGEREICHT AM 23/10/91.

REF Corresponds to:

Ref document number: 69111368

Country of ref document: DE

Date of ref document: 19950824

ET Fr: translation filed
REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2074649

Country of ref document: ES

Kind code of ref document: T3

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: GB

Payment date: 19981009

Year of fee payment: 8

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

Ref country code: LU

Payment date: 19981028

Year of fee payment: 8

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

Ref country code: FR

Payment date: 19981029

Year of fee payment: 8

Ref country code: DK

Payment date: 19981029

Year of fee payment: 8

Ref country code: AT

Payment date: 19981029

Year of fee payment: 8

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

Ref country code: SE

Payment date: 19981030

Year of fee payment: 8

Ref country code: ES

Payment date: 19981030

Year of fee payment: 8

Ref country code: DE

Payment date: 19981030

Year of fee payment: 8

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

Ref country code: BE

Payment date: 19981112

Year of fee payment: 8

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

Ref country code: CH

Payment date: 19981116

Year of fee payment: 8

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

Ref country code: LU

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

Effective date: 19991023

Ref country code: GB

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

Effective date: 19991023

Ref country code: DK

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

Effective date: 19991023

Ref country code: AT

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

Effective date: 19991023

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: 19991024

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

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19991030

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: 19991031

Ref country code: CH

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

Effective date: 19991031

Ref country code: BE

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

Effective date: 19991031

BERE Be: lapsed

Owner name: GRINT- EN ZANDEXPLOITATIEMAATSCHAPPIJ V/H GEBRS.

Effective date: 19991031

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

Effective date: 19991023

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 91202749.7

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: 20000630

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

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: 20000801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: NL

Payment date: 20031031

Year of fee payment: 13

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20001113

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: 20050501

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20050501

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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051023