EP0879360B1 - Diffuser and conveyor device for a single-impeller centrigugal self-priming pump - Google Patents

Diffuser and conveyor device for a single-impeller centrigugal self-priming pump Download PDF

Info

Publication number
EP0879360B1
EP0879360B1 EP97952804A EP97952804A EP0879360B1 EP 0879360 B1 EP0879360 B1 EP 0879360B1 EP 97952804 A EP97952804 A EP 97952804A EP 97952804 A EP97952804 A EP 97952804A EP 0879360 B1 EP0879360 B1 EP 0879360B1
Authority
EP
European Patent Office
Prior art keywords
diffuser
conveyor device
wall
conveyor
pump
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
EP97952804A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0879360A1 (en
Inventor
Carlo Serafin
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.)
Calpeda SpA
Original Assignee
Calpeda SpA
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 Calpeda SpA filed Critical Calpeda SpA
Publication of EP0879360A1 publication Critical patent/EP0879360A1/en
Application granted granted Critical
Publication of EP0879360B1 publication Critical patent/EP0879360B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • F04D29/448—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps bladed diffusers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
    • F04D9/06—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock of jet type

Definitions

  • the present invention concerns a diffuser and conveyor device particularly suitable for being applied to single-impeller centrifugal self-priming pumps with incorporated ejector, commonly said shallow-well jet pumps and to self-priming pumps without ejector of the kind suitable for swimming pools and whirlpools.
  • a self-priming pump has to be installed on the surface at a normal suction lift from the water using the atmospheric pressure suited to rise the liquid with a plunged suction pipe full of air at the starting time, having filled with the liquid, the pump casing only.
  • the self-priming phase after the starting time is a separation process from the liquid contained in the pump casing and an evacuation process from the delivery side, of the air contained in the suction pipe pushed into the pump by the underneath raising up liquid.
  • the water is held in the pump casing while the air is dispersed at the delivery side.
  • Said phase ends when the liquid coming from the suction pipe arrives in the pump and begins to exits from the outlet. The process continues during normal operating conditions if air pockets or gas arrive occasionally from the suction source to the pump or pumping water containing a remarkable quantity of air or gas.
  • some shallow-well jet pumps contains a diffuser and conveyor device which has the double function of transforming the kinetic energy of the flow coming out from the impeller as much as possible in pressure energy and of conveying the flow, through an exit having a ring shape or a plurality of outlet openings located around the ejector or suction duct of the impeller, so that said flow can enter in the central part of the pressure chamber with residual rotation and speed as much as possible reduced, in order to facilitate the separation of the air from the water during the self-priming phase, even with the greatest suction lift, utilizing the gravity in the state of rest obtained in the pressure chamber.
  • An inconvenience is that the flow conveying towards the pump axis in the central part of the pressure chamber through a channel between two walls needs at least two assembled pieces to create the structure of the device.
  • the lack of frontal ports prevents from the inspection of the internal- parts and makes difficult the disassembly of the diffuser, without detaching the suction pipe from the pump casing or vice versa, especially if there is some calcareous deposit or similar, due to lack of internal hooking during the extraction.
  • said diffuser and conveyor devices provided for the jet pumps in which the liquid circulates always in the same direction in a continuous circuit through the ejector, are not suited to be used with self-priming pumps without ejector, as those suitable for swimming pools, where the water during the self-priming must return with a continuous back flow from the pressure chamber to the impeller to pick up, from the suction, new air to be dispersed at the delivery.
  • the present invention proposes to overcome all the mentioned inconveniences.
  • It is another purpose of the device of the invention obtain the elimination or a great reduction of the peripheral tangential component at the exit of the diffuser, deflecting the flow in a tendentially radial centripetal direction so that it can enter in the pressure chamber with reduced residual rotation and speed.
  • the diffuser and conveyor device pointed as a whole with 2, 102, 202, belongs to a single-impeller centrifugal self-priming pump, pointed as a whole with 1, having an included ejector, containing:
  • Said diffuser-conveyor device 2, 102, 202 keyed between the casing cover 7, 107, 207 and the pump casing 3, 103, 203 and connected to the suction duct 12, 112, 212 by a circular wall 17, 117, 217 placed between the impeller 8, 108, 208 and the pressure chamber 6, 106, presents a diffuser 13, 113, 213 which develops in a centrifugal radial direction farther said circular wall 17, 117, 217 and placed around the periphery of the impeller 8, 108, 208, said diffuser defined by the junction with the casing cover 7,107, 207 and formed by one or more diffuser channels 14, 114.
  • the diffuser and conveyor device pointed as a whole with 302 belongs to a single-impeller centrifugal self-priming pump, pointed as a whole with 301, suitable for swimming pools.
  • this pump comprises: a pump casing 303 provided with an inlet 304, outlet 305 and containing the pressure chamber 306; a stationary suction duct 312 rounded by the pressure chamber 306 connected to the impeller 308; a casing cover 307; an impeller 308 keyed on the driving shaft 309 and placed between the casing cover 307 and the diffuser-conveyor device 302; said diffuser-conveyor device 302, keyed between the casing cover 307 and the pump casing 303, connected to the suction duct 312 by a circular wall 317 placed between the impeller 308 and the pressure chamber 306, presents a diffuser 313 which develops in centrifugal radial direction farther said circular wall 317 and placed around the periphery of the impeller 308.
  • the mentioned embodiments are belonging to the known technique.
  • each of the diffuser channels 14, 114 continues as conveyor channel 15, 115, 215, 315 radially placed outside 20, 120, 220, 320 of the beginning part of the diffuser 13, 113, 213, 313 and inside the pump casing 3, 103, 203, 303, with a width comprised between the casing cover 7, 107, 207, 307 and a frontal wall 16, 116, 216, 316 located next said circular wall 17, 117, 217, 317 outwardly of which the diffuser 13, 113, 213, 313 develops radially leaving between the two walls 16, 116, 216, 316, and 17, 117, 217, 317 an outlet opening 18, 118, 218, 318 in a radial centripetal direction communicating with the pressure chamber 6, 106, 306, said frontal wall 16, 116, 216, 316 of the conveyor channel 15, 115, 215, 315 radially extended without frontal overlapping with said circular wall 17, 117,
  • the final wall 22, 122, 222 of the conveyor channel 15, 115, 215, 315 is located angularly in order to leave between it and the next diffuser channel or the initial part of the diffuser channel, if it is only one, a free frontal port 25, 125, 225, 325 between the outside 20, 120, 220, 320 of the diffuser 13, 113, 213, 313 and the inside of the pump casing 3, 103, 203, 303.
  • the conveyor channel 15, 315 can be comprised between the casing cover 7, 307 and a frontal wall 16, 316 belonging to the diffuser-conveyor device 2, 302 and connected to the circular wall 17, 317 and to the outside 20, 320 of the diffuser 13, 313 by the initial wall 21 and the final wall 22, in between of which develops angularly the conveyor channel 15, 315 being the whole achievable by die forming in a single piece without undercuts and without joints providing for the frontal wall 16, 116 an inner diameter 27, 327 equal or greater than the external initial outline 20, 320 of the diffuser 13, 313.
  • the embodiment with an unique monolithic piece without undercuts and without joints is obtained realizing the conveyor channel with a frontal wall 16, 316 not frontally overlapping said circular wall 17, 317.
  • the conveyor channel 115 can be also comprised between the casing cover 107 and a frontal wall 116 belonging to the pump casing 103, keeping the realization of the diffuser-conveyor device 102 in a single piece and maintaining the presence of frontal ports 125, providing for the frontal wall 116 a minimum diameter 127 equal or greater than the external initial outline 120 of the diffuser 113.
  • the frontal wall 216 and if necessary also the peripheral wall 223, could be, obviously, obtained with a detachable piece and also made of a material different from the other part of the diffuser-conveyor device.
  • the frontal wall 216 could be also performed partially and frontally overlapped to the circular wall 217 of the diffuser 213 considering that the overlapping of walls belonging to separate pieces doesn't form an undercut for the forming of the different parts.
  • a free frontal port 225 can be equally obtained, if such a port is considered useful or necessary, with an internal diameter of the outlet opening 227 equal or greater than the external initial outline 220 of the diffuser 213.
  • the conveyor channel 15, 315 can be radially closed towards the outside by a peripheral arc shaped wall 23, 323 belonging to the diffuser-conveyor device 2, 302, or can be partially or totally closed towards the outside by the cylindrical walls 119, 219, 319 of the pump casing 103, 203, 303 and/or of the casing cover 207 or by the peripheral wall 223 of the diffuser-conveyor device 202 combining in different way the connection of the said three pieces: 202, 302; 103, 203, 303; 207.
  • the channels number can be whatever, from one to the maximum number which allows a free frontal port 25, 125, 225, 325 among the channels, if such a port is desirable and considering that the diffuser should have a number of blades different from that of the impeller and that one blade number should not be a multiple of the other or should not contain a common divisor, in order to avoid vibrations caused by interference, for the purpose of reducing the noise.
  • the diffuser and conveyor device of the invention does not need an increase of the radial dimensions of the pump because it uses radial available spaces between the pump casing 3, 103, 203, 303 and the outside 20, 120, 220, 320 of the diffuser 13, 113, 213, 313, between the end of a diffuser channel 14, 114 and the following or the initial part of the diffuser, if the diffuser channel is unique.
  • the slowing down of the flow rotation at the entrance in the pressure chamber 6, 106, 306 is obtained reducing the peripheral tangential component of the flow after the diffuser channel 14, 114, deflecting it towards a tendentially radial centripetal direction through the frontal wall 16, 116, 216, 316 and the final wall 22, 122, 222.
  • the slowing down of the speed of the flow at the entrance in the pressure chamber 6, 106, 306, is obtained with the outlet port 18, 118, 218, 318 of the conveyor channel 15, 115, 215, 315, formed by the axial position of the frontal wall 16, 116, 216, 316 next to the circular wall 17, 117, 217, 317 of the diffuser 13, 113, 213, 313 and by the angular position of the final wall 22, 122, 222 compared with the initial one 21, 121, 221.
  • the diffuser-conveyor device of the invention let a further possibility to facilitate the expected separation with two subsequent phases.
  • a first separation of the air can be obtained just at the exit of the conveyor channel 15, 115 utilizing the centrifugal force of the liquid with its tangential component on the periphery inside the conveyor channel 15, 115.
  • the terminal wall 22, 122 will deflect in a radial centripetal direction the most part of the liquid and the intermediate blade 26, 126 will deflect in a radial centripetal direction the most part of the air.
  • the intermediate blade 26, 126 is useful also for reducing the residual tangential component of the flow on the diameter of the outlet opening 27, 127 in the frontal wall 16, 116 at the entrance in the pressure chamber 6, 106 (at steady state) or rest chamber or separation chamber (during the self-priming phase).
  • the remaining turbulence can be further reduced placing in the arc of the conveyor channel 215 a sequence of deflecting blades 226 arranged starting from increased diameters according to the direction of the flow, from the initial wall 221 to the final one 222, with the minimum diameter corresponding to the external profile 220 of the diffuser 213 until the diameter of the peripheral wall 223.
  • the intermediate deflecting blades 26, 126, 226 can have different breadths also in the width of the conveyor channel 15, 115, 215, 315, they can extend only on the port of the outlet opening 118 between the frontal wall 116 and the circular wall 117 or on all the width of the conveyor channel 15 between the frontal wall 16 and the casing cover 7, or it is possible place several intermediate deflecting blades having different width or of increasing width according the direction of the flow, with rounded initial edge and reversed towards the coming of the flow, similar to the shape of the final wall 122 as in fig. 8.
  • the number, the disposition, the width and the shape of the intermediate deflecting blades can be whichever and several optimum embodiments can be provided for reducing the turbulence and the noise of the flow, for facilitate the separation of the air from the water.
  • the initial wall 21, 121, 221 and the final one 22, 122, 222 of each conveyor channel 15, 115, 215, 315, and the possible intermediate blades 26, 126, 226, can proceed radially towards the more central part of the circular wall 17, 117, 217, 317 of the diffuser 13, 113, 213, 313 assuming in this way even the function of ribs reinforcement of said circular wall 17, 117, as highlighted with dotted lines in figs. 2 and 6.
  • the diffuser-conveyor device of the invention facilitates the separation of the air from the water during the self-priming phase obtaining a flow with reduced residual rotation and speed and it permits also the possibility of facilitating said separation with two subsequent phases, using first the centrifugal force in the conveyor channel and then the gravity force in the rest chamber.
  • the elimination of the tangential component on the periphery by the described device reduces the noise caused by the motion flow inside the pump casing, by the impact and by the flowing on its peripheral walls, last barrier for the damping of the noise that can be heard in the surroundings.
  • the diffuser and conveyor device of the invention can be obtained with reduced production costs because it can be made in just one piece inserted between the other parts anyhow necessaries to the pump, obtained by die forming without undercuts and without junctions of several pieces and without the necessity of a fusion moulding with core and because provided of frontal ports useful for the assembly and the disassembly, with the advantage for both the producer and the user, for any maintenance of the pump.
  • the conveyor channel of the invention does not need an increasing of the radial dimensions of the pump because it utilizes radial spaces available outside the diffuser at the end of a diffuser channel, between the pump casing and the beginning of the subsequent diffuser channel or the beginning part of the diffuser, if the diffuser channel is only one.
  • the assembling of the ejector unit in the pump casing with the diffuser-conveyor device is facilitated by the possibility of introducing a pusher tool (as a screwdriver, a punch or similar) in the frontal port angularly provided, between a conveyor channel and a diffuser channel, locating said frontal port in front of the inlet, to push in that point the ejector on the inner seat.
  • a pusher tool as a screwdriver, a punch or similar
  • the frontal ports allow the visual inspection of the internal parts of the pump and the holding of the diffuser-conveyor device from the internal, making easy its extraction even in the presence of calcareous deposits or similar.
  • the device of the invention can be applied even in self-priming pumps without ejector as the one suitable for swimming pools, because it provides for a short path for a fast back flow of the liquid to the impeller during the self-priming, using even the liquid contained in the lower part of the separation chamber.
  • the described embodiment is suitable preferably for a pump with a pump casing and a casing cover made of rolled steel and with the ejector unit keyed on the inlet of the pump.
  • the described device can be applied in shallow-well jet pumps made of other material and with the ejector in anyway disposed in the inner part of the pump as in single-impeller self-priming pumps without ejector.
  • the diffuser and conveyor device of the invention can undergo modifications to improve the efficiency or to facilitate the realization. So, for example, the dimensions, the width and the shape of the channels 14, 114, 15, 115, 215, 315, of the openings 18, 118, 218, 318, 27, 127, 227, 327, of the intermediate blades 26, 126, 226 and of the final wall 22, 122, 222, can be changed and also the dimensional and space ratio among the various parts can be different.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP97952804A 1996-11-27 1997-11-26 Diffuser and conveyor device for a single-impeller centrigugal self-priming pump Expired - Lifetime EP0879360B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT96VI000192A IT1287367B1 (it) 1996-11-27 1996-11-27 Dispositivo diffusore e convogliatore per pompa monogirante centrifuga autoadescante.
ITVI960192 1996-11-27
PCT/EP1997/006591 WO1998023864A1 (en) 1996-11-27 1997-11-26 Diffuser and conveyor device for a single-impeller centrigugal self-priming pump

Publications (2)

Publication Number Publication Date
EP0879360A1 EP0879360A1 (en) 1998-11-25
EP0879360B1 true EP0879360B1 (en) 2001-06-20

Family

ID=11426191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97952804A Expired - Lifetime EP0879360B1 (en) 1996-11-27 1997-11-26 Diffuser and conveyor device for a single-impeller centrigugal self-priming pump

Country Status (9)

Country Link
EP (1) EP0879360B1 (es)
CN (1) CN1082630C (es)
AT (1) ATE202407T1 (es)
AU (1) AU5655398A (es)
BR (1) BR9707307A (es)
DE (1) DE69705296D1 (es)
ES (1) ES2160375T3 (es)
IT (1) IT1287367B1 (es)
WO (1) WO1998023864A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104763641A (zh) * 2015-03-30 2015-07-08 强胜精密机械(苏州)有限公司 一种旋流自吸泵

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7780406B2 (en) * 2004-01-20 2010-08-24 Pentair Water Pool And Spa, Inc. Molded pump
CN102536837A (zh) * 2011-11-08 2012-07-04 江苏大学 一种自吸离心泵
CN103148017B (zh) * 2013-04-02 2016-05-04 陈坚 自吸喷射泵导流罩的防空气倒流的挡板
CN104763643B (zh) * 2015-02-13 2017-04-26 四川东工电机有限公司 一种深井双管高吸喷射离心泵
CN105937507A (zh) * 2016-06-02 2016-09-14 江苏大学 一种改善射流式离心泵自吸性能的导叶
CN111268438B (zh) * 2020-02-28 2022-02-22 江苏大学 一种过流无损多相混输泵
AU2021249219A1 (en) * 2020-04-03 2022-10-06 Zodiac Pool Systems Llc Swimming pool and spa pumps configured to improve priming performance

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941474A (en) 1956-08-20 1960-06-21 Fairbanks Morse & Co Self-priming pumping apparatus
US2934021A (en) 1956-10-09 1960-04-26 F E Meyers & Bro Co Shallow well self-priming jet pump
AT288166B (de) 1967-07-07 1971-02-25 Mueanyagipari Ki Ein- oder mehrstufige selbstansaugende Kreiselpumpe
ES2006285A6 (es) 1987-12-28 1989-04-16 Bombas Elec Tricas S A Boelsa Bomba centrifuga.
IT1225597B (it) 1988-09-26 1990-11-22 Calpeda A Spa Pompa autoadescante ad eiettore con corona direttrice assiale.
IT1234116B (it) 1989-06-07 1992-04-29 Novax S R L Pompa centrifuga autoadescante.
IT1234126B (it) 1989-07-05 1992-04-29 Nowax Srl Cassa statorica, particolarmente per pompa radiale centrifuga, nonche' metodo per la sua realizzazione
IT1243113B (it) 1990-06-08 1994-05-24 Calpeda A Spa Diffusore longitudinale periferico per pompa monogirante centrifuga autoadescante
CN2193942Y (zh) * 1994-06-25 1995-04-05 哈尔滨工业大学 一种节段式自吸离心泵

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104763641A (zh) * 2015-03-30 2015-07-08 强胜精密机械(苏州)有限公司 一种旋流自吸泵
CN104763641B (zh) * 2015-03-30 2017-08-25 强胜精密机械(苏州)有限公司 一种旋流自吸泵

Also Published As

Publication number Publication date
WO1998023864A1 (en) 1998-06-04
ES2160375T3 (es) 2001-11-01
BR9707307A (pt) 1999-07-20
EP0879360A1 (en) 1998-11-25
CN1214107A (zh) 1999-04-14
DE69705296D1 (de) 2001-07-26
CN1082630C (zh) 2002-04-10
AU5655398A (en) 1998-06-22
ITVI960192A1 (it) 1997-02-27
IT1287367B1 (it) 1998-08-04
ATE202407T1 (de) 2001-07-15

Similar Documents

Publication Publication Date Title
EP0401670B1 (en) Self-priming centrifugal pump
US5580214A (en) Multiphase fluid treatment
US6227819B1 (en) Fuel pumping assembly
AU636292B2 (en) Rotary machine with non-positive displacement, for use as a pump, compressor, propulsion unit, generator or drive turbine
US4448573A (en) Single-stage, multiple outlet centrifugal blower
JP5872800B2 (ja) 遠心ポンプ用の渦巻ポンプ・ケーシング
US3108738A (en) Liquid-ring gas pumps
EP0879360B1 (en) Diffuser and conveyor device for a single-impeller centrigugal self-priming pump
SE457552B (sv) Sidokanalpump
WO2002068826A2 (en) Fluid flow controller
US4802819A (en) Centrifugal pump
US5137424A (en) Pump unit
US5104541A (en) Oil-water separator
KR101695444B1 (ko) 펌프
JPH04262093A (ja) 回生遠心圧縮機
EP0577180A1 (en) Pump Impeller
CN111594451A (zh) 卧式自吸泵
EP3312432B1 (en) Diffuser for a fluid compression device, comprising at least one vane with opening
AU679933B2 (en) Regenerative pump
EP0093483A2 (en) Centrifugal pump
US4655680A (en) Continuous blade axial-flow friction drag pump
CN209856098U (zh) 一种离心泵的新型叶轮组合体
US6579077B1 (en) Deep well submersible pump
MXPA98005919A (es) Dispositivo transportador y difusor para una bomba autocebable centrifuga de impulsor individual
US4531887A (en) Continuous blade multi-stage pump

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: 19980826

AK Designated contracting states

Kind code of ref document: A1

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

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 20001122

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI NL PT 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010620

Ref country code: LI

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: 20010620

Ref country code: FR

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: 20010620

Ref country code: CH

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: 20010620

Ref country code: BE

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: 20010620

Ref country code: AT

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: 20010620

REF Corresponds to:

Ref document number: 202407

Country of ref document: AT

Date of ref document: 20010715

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69705296

Country of ref document: DE

Date of ref document: 20010726

ITF It: translation for a ep patent filed

Owner name: STUDIO ING. E. BONINI S.R.L.

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20010920

Ref country code: PT

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: 20010920

Ref country code: DK

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: 20010920

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

Ref country code: GR

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: 20010921

Ref country code: DE

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: 20010921

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2160375

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: IE

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: 20011126

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
EN Fr: translation not filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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
REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: GB

Payment date: 20031126

Year of fee payment: 7

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

Ref country code: ES

Payment date: 20031128

Year of fee payment: 7

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: 20041126

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: 20041127

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

Effective date: 20041126

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20041127

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: 20081126

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

Ref country code: IT

Payment date: 20091116

Year of fee payment: 13

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20110616

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20110616