EP0316614A1 - Basket-frame unit for continuous endless-conveyor riddle - Google Patents

Basket-frame unit for continuous endless-conveyor riddle Download PDF

Info

Publication number
EP0316614A1
EP0316614A1 EP88117619A EP88117619A EP0316614A1 EP 0316614 A1 EP0316614 A1 EP 0316614A1 EP 88117619 A EP88117619 A EP 88117619A EP 88117619 A EP88117619 A EP 88117619A EP 0316614 A1 EP0316614 A1 EP 0316614A1
Authority
EP
European Patent Office
Prior art keywords
riddle
basket
frame unit
unit
hereinbefore
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.)
Granted
Application number
EP88117619A
Other languages
German (de)
French (fr)
Other versions
EP0316614B1 (en
Inventor
Ivo Cicin-Sain
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.)
ITI/CLM IMPIANTI TECNICI INDUSTRIALI SpA
Danieli and C Officine Meccaniche SpA
ITI CLM Impianti Tecnici Industriali SpA
Original Assignee
ITI/CLM IMPIANTI TECNICI INDUSTRIALI SpA
Danieli and C Officine Meccaniche SpA
ITI CLM Impianti Tecnici Industriali 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 ITI/CLM IMPIANTI TECNICI INDUSTRIALI SpA, Danieli and C Officine Meccaniche SpA, ITI CLM Impianti Tecnici Industriali SpA filed Critical ITI/CLM IMPIANTI TECNICI INDUSTRIALI SpA
Priority to AT88117619T priority Critical patent/ATE78071T1/en
Publication of EP0316614A1 publication Critical patent/EP0316614A1/en
Application granted granted Critical
Publication of EP0316614B1 publication Critical patent/EP0316614B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/10—Screens in the form of endless moving bands

Definitions

  • This invention concerns a basket-frame unit for a continuous endless-conveyor riddle.
  • the invention concerns a basket-frame unit suitable to riddle, transport and discharge continuously material taken from railway road beds in rehabilitation work on such beds.
  • the basket-frame unit cooperates with a plurality of equal units which are positioned contiguous to each other so as to form beds to convey materials being riddled in the continuous riddle.
  • the state of the art includes embodiments intended to riddle the metalling forming the road bed and to eliminate the too great materials (blocks and the like) and too small materials (earth, mud and clay) and to recycle the materials which are dimensionally most suitable.
  • Such known embodiments provide for the metalling taken from the road bed to be transferred onto vibratory riddle means.
  • the vibratory riddle means entail a plurality of short­comings linked mainly to the self-unbalancing nature of the system during the course of the riddling operations, such self-unbalancing being progressively accentuated while the riddling efficiency continues decreasing.
  • EP 0184236 discloses a double continuous riddle with links cooperating with an outer surface and an inner surface connected so as to form an endless conveyor belt.
  • FR 2.370.527 shows a system of connection of links of a conveyor by means of joints, but this system cannot be applied to our invention.
  • US 2,594,991 shows a normal, suitably formed chain for excavation and conveying purposes.
  • the present applicants have designed, tested and embodied a basket-frame unit which, when employed in a continuous riddle, overcomes the problems of the state of the art.
  • the basket-frame unit according to the invention consists of two parallel riddle surfaces, one of them an outer surface and the other an inner surface, which are connected together by lateral walls.
  • the outer riddle surface is suitable to retain materials of a too big piece size, whereas the inner surface is suitable to retain rehabilitation material.
  • the too fine material passes through the two riddle surfaces and is discharged suitably.
  • Link elements are fixed to the side walls of the basket-­frame unit and together with suitable connection elements, form the links of a double endless chain which is actuated by suitable terminal pinions.
  • two neighbouring basket-­frame units When fitted to the double chain, two neighbouring basket-­frame units provide a lengthwise overlapping segment of their respective lateral walls in the zone of horizontal or substantially horizontal movement of the riddle.
  • Such overlapping of the lateral walls of two neighbouring basket-frame units forms a continuous side wall for lateral retention of the material being riddled.
  • the outer and inner riddle surfaces of two neighbouring basket-frame units are positioned reciprocally so as to form continuous riddle surfaces.
  • each basket-frame unit is distanced from that of the unit following it in the direction of movement, whereas the inner surface maintains its continuity with the following inner surface.
  • the reciprocal distancing of the outer riddle surfaces of neighbouring basket-frame units assists the exit of the rehabilitation materials in the zone of the discharge of materials.
  • a basket-frame unit 10 consists of an outer riddle surface 11 and inner riddle surface 12, such surfaces 11-12 being located on parallel planes.
  • the surfaces 11-12 consist of transverse rods 13 and lengthwise rods 14 fixed to each other to form a riddle mesh of required dimensions.
  • the inner surface 12 has a density of transverse rods 13 and lengthwise rods 14 greater than the analogous density of the outer surface 11.
  • the surfaces 11-12 can be embodied with elements other than rods 13-14, and many variants are possible without departing thereby from the scope of the invention.
  • the transverse rods 13 of the riddle surfaces 11-12 are fixed terminally to lateral plates 15, which comprise a vertical tract 16 that extends above the outer surface 11, and a sloped tract 17 that is inclined towards the inside of the basket-frame unit 10.
  • This sloped tract 17 is advantageous for the limitation of the overall transverse bulk of the basket-frame unit 10 and is positioned in correspondence with the greatest protrusion of a link of a chain, as will be described later.
  • the riddle surfaces 11-12 are connected to each other by a plurality of stiffening ties 18 of a required number and shape.
  • These ties 18 have the further task of retaining, in the direction of the forward movement of the basket-frame unit 10 and riddle, the rehabilitation material held on the inner riddle surface 12 without thereby hindering the discharge of the rehabilitation material in a radial direction.
  • the lateral plates 15 comprise distancer blocks 19, which are the same as each other but are fixed in a differentiated manner to the plates 15, or else one of the distancer blocks 19 is positioned so as to protrude sideways from the volume of the basket-frame unit 10 by a required extent.
  • the blocks 19 include holes 20 which cooperate with upper holes 120 in a link 21 so as to anchor that link 21 to its respective lateral block 19 with means of the state of the art.
  • the upper holes 120 in the link 21 may be positioned closer to or farther from first 23 and second 24 holes in the lower part of the link in a direction normal to the line joining the axes of the first and second holes 23-24.
  • the behaviour of the basket-frame unit 10 will vary so that it is possible to obtain a behaviour differentiated as desired both of the outer riddle surface 11 and of the inner riddle surface 12, such behaviour resulting in a greater or lesser continuity of the riddle surfaces 11-12.
  • Each link 21 has in its lower part a structure 22 shaped as an overturned "U" with the first 23 and second 24 lengthwise holes.
  • a connecting element 25 in which a first hole 124 cooperates with the second hole 24 in the link 21 and is secured thereto with the ability to rotate, whereas a second hole 123 in the connecting element 25 will cooperate with the first hole 23 of the link 21 of the neighbouring basket-frame unit 10.
  • the links 21 and connecting elements 25 form in this way on each side of the basket-frame units 10 a chain to draw the basket-frame units 10.
  • the basket-frame units 10 are elements which connect the two lateral chains.
  • the lateral position of the respective links 21 in relation to the basket-frame unit 10 is differentiated since one of the links 21 is positioned more outwards owing to the different anchorage of the distancer blocks 19 on the lateral plates 15.
  • basket-frame units 10 This enables the basket-frame units 10 to be positioned in the riddle one after another and rotated by 180° in relation to one another so as to obtain a partial lengthwise over­lapping of the lateral plates 15 of neighbouring basket-frame units 10 on both sides of the basket-frame units 10.
  • a required lateral barrier is produced in this way to retain the material being riddled in the substantially horizontal tracts of the movement of the riddle.
  • the transverse 13 and lengthwise 14 rods of the outer 11 and inner 12 riddle surfaces are positioned reciprocally in such a way as to form continuous riddle surfaces, as shown with lines of dashes in Figs. 3 and 4, with the rotation of one basket-frame unit 10 by 180° in relation to the neighbouring basket-frame unit 10.

Landscapes

  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Chain Conveyers (AREA)
  • Belt Conveyors (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Fish Paste Products (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

The unit is suitable to riddle, transport and discharge material continuously, the material being taken advantageously from railway road beds in rehabilitation work on such beds, the unit comprising an outer riddle surface (11) retaining material of too great piece size and an inner riddle surface (12) retaining the rehabilitation material, the two riddle surfaces (11-12) being positioned parallel to each other, the basket-frame unit (10) cooperating with link elements (21), the outer and inner riddle surfaces (11-12) being contained between lateral plates (15) connected to the link elements (21) that form the chains which move the basket-frame unit (10) forwards, the lateral plates (15) having a mean length­wise extent greater than the lengthwise extent of the outer and inner surfaces (11-12).

Description

  • This invention concerns a basket-frame unit for a continuous endless-conveyor riddle. To be more exact, the invention concerns a basket-frame unit suitable to riddle, transport and discharge continuously material taken from railway road beds in rehabilitation work on such beds.
  • The basket-frame unit cooperates with a plurality of equal units which are positioned contiguous to each other so as to form beds to convey materials being riddled in the continuous riddle.
  • The state of the art includes embodiments intended to riddle the metalling forming the road bed and to eliminate the too great materials (blocks and the like) and too small materials (earth, mud and clay) and to recycle the materials which are dimensionally most suitable. Such known embodiments provide for the metalling taken from the road bed to be transferred onto vibratory riddle means.
  • The vibratory riddle means entail a plurality of short­comings linked mainly to the self-unbalancing nature of the system during the course of the riddling operations, such self-unbalancing being progressively accentuated while the riddling efficiency continues decreasing.
  • EP 0184236 discloses a double continuous riddle with links cooperating with an outer surface and an inner surface connected so as to form an endless conveyor belt.
  • US 1,940,832 deals with a conveyor with elements connected to each other by rocking links but this teaching is very different from the contents of our present invention.
  • FR 2.370.527 shows a system of connection of links of a conveyor by means of joints, but this system cannot be applied to our invention.
  • US 2,594,991 shows a normal, suitably formed chain for excavation and conveying purposes.
  • The present applicants have designed, tested and embodied a basket-frame unit which, when employed in a continuous riddle, overcomes the problems of the state of the art.
  • The basket-frame unit according to the invention consists of two parallel riddle surfaces, one of them an outer surface and the other an inner surface, which are connected together by lateral walls.
  • The outer riddle surface is suitable to retain materials of a too big piece size, whereas the inner surface is suitable to retain rehabilitation material.
  • The too fine material passes through the two riddle surfaces and is discharged suitably.
  • Link elements are fixed to the side walls of the basket-­frame unit and together with suitable connection elements, form the links of a double endless chain which is actuated by suitable terminal pinions.
  • When fitted to the double chain, two neighbouring basket-­frame units provide a lengthwise overlapping segment of their respective lateral walls in the zone of horizontal or substantially horizontal movement of the riddle.
  • Such overlapping of the lateral walls of two neighbouring basket-frame units forms a continuous side wall for lateral retention of the material being riddled.
  • In the zone where the riddle slides substantially horizontally, the outer and inner riddle surfaces of two neighbouring basket-frame units are positioned reciprocally so as to form continuous riddle surfaces.
  • At the bends where the riddle is wound on terminal pinions, the outer surface of each basket-frame unit is distanced from that of the unit following it in the direction of movement, whereas the inner surface maintains its continuity with the following inner surface.
  • The reciprocal distancing of the outer riddle surfaces of neighbouring basket-frame units assists the exit of the rehabilitation materials in the zone of the discharge of materials.
  • The invention is therefore embodied according to the content of Claim 1 and the dependent claims.
  • The attached figures, which are given as a non-restrictive example, show the following:-
    • Fig. 1 gives a front view of a basket-frame unit according to the invention;
    • Fig. 2 is a side view of the basket-frame unit of Fig. 1;
    • Fig. 3 is a partial view of the basket-frame unit of Fig. 1 in the direction A;
    • Fig. 4 is a partial section of the basket-frame unit of Fig. 1 according to the line B-B;
    • Fig. 5 is a link employed in the basket-frame unit of Fig. 1, shown in an enlarged scale as compared to the preceding figures;
    • Fig. 6 is a side view of the link of Fig. 5;
    • Fig. 7 is a connection element for links of Fig. 5.
  • A basket-frame unit 10 according to the invention consists of an outer riddle surface 11 and inner riddle surface 12, such surfaces 11-12 being located on parallel planes.
  • In the example shown the surfaces 11-12 consist of transverse rods 13 and lengthwise rods 14 fixed to each other to form a riddle mesh of required dimensions.
  • The inner surface 12 has a density of transverse rods 13 and lengthwise rods 14 greater than the analogous density of the outer surface 11.
  • The surfaces 11-12 can be embodied with elements other than rods 13-14, and many variants are possible without departing thereby from the scope of the invention.
  • The transverse rods 13 of the riddle surfaces 11-12 are fixed terminally to lateral plates 15, which comprise a vertical tract 16 that extends above the outer surface 11, and a sloped tract 17 that is inclined towards the inside of the basket-frame unit 10. This sloped tract 17 is advantageous for the limitation of the overall transverse bulk of the basket-frame unit 10 and is positioned in correspondence with the greatest protrusion of a link of a chain, as will be described later.
  • The riddle surfaces 11-12 are connected to each other by a plurality of stiffening ties 18 of a required number and shape.
  • These ties 18 have the further task of retaining, in the direction of the forward movement of the basket-frame unit 10 and riddle, the rehabilitation material held on the inner riddle surface 12 without thereby hindering the discharge of the rehabilitation material in a radial direction.
  • The lateral plates 15 comprise distancer blocks 19, which are the same as each other but are fixed in a differentiated manner to the plates 15, or else one of the distancer blocks 19 is positioned so as to protrude sideways from the volume of the basket-frame unit 10 by a required extent.
  • The blocks 19 include holes 20 which cooperate with upper holes 120 in a link 21 so as to anchor that link 21 to its respective lateral block 19 with means of the state of the art.
  • The upper holes 120 in the link 21 may be positioned closer to or farther from first 23 and second 24 holes in the lower part of the link in a direction normal to the line joining the axes of the first and second holes 23-24.
  • If the upper holes 120 are displaced, the behaviour of the basket-frame unit 10, particularly at the bends of the winding of the unit, will vary so that it is possible to obtain a behaviour differentiated as desired both of the outer riddle surface 11 and of the inner riddle surface 12, such behaviour resulting in a greater or lesser continuity of the riddle surfaces 11-12.
  • Each link 21 has in its lower part a structure 22 shaped as an overturned "U" with the first 23 and second 24 lengthwise holes.
  • Within the U-shaped structure 22 is located a connecting element 25, in which a first hole 124 cooperates with the second hole 24 in the link 21 and is secured thereto with the ability to rotate, whereas a second hole 123 in the connecting element 25 will cooperate with the first hole 23 of the link 21 of the neighbouring basket-frame unit 10.
  • The links 21 and connecting elements 25 form in this way on each side of the basket-frame units 10 a chain to draw the basket-frame units 10.
  • The basket-frame units 10 are elements which connect the two lateral chains.
  • The lateral position of the respective links 21 in relation to the basket-frame unit 10 is differentiated since one of the links 21 is positioned more outwards owing to the different anchorage of the distancer blocks 19 on the lateral plates 15.
  • This enables the basket-frame units 10 to be positioned in the riddle one after another and rotated by 180° in relation to one another so as to obtain a partial lengthwise over­lapping of the lateral plates 15 of neighbouring basket-frame units 10 on both sides of the basket-frame units 10.
  • A required lateral barrier is produced in this way to retain the material being riddled in the substantially horizontal tracts of the movement of the riddle.
  • The transverse 13 and lengthwise 14 rods of the outer 11 and inner 12 riddle surfaces are positioned reciprocally in such a way as to form continuous riddle surfaces, as shown with lines of dashes in Figs. 3 and 4, with the rotation of one basket-frame unit 10 by 180° in relation to the neighbouring basket-frame unit 10.

Claims (9)

1 - Basket-frame unit for a continuous endless-conveyor riddle, the unit being suitable to riddle, transport and discharge material continuously, the material being taken advantageously from railway road beds in rehabilitation work on such beds, the unit comprising an outer riddle surface (11) retaining material of too great piece size and an inner riddle surface (12) retaining the rehabilitation material, the two surfaces (11-12) being positioned parallel to each other, the basket-frame unit (10) cooperating with link elements (21) and being characterized in that the outer and inner riddle surfaces (11-12) are contained between lateral plates (15) connected to link elements (21) that form the chains which move the basket-frame unit (10) forwards, the lateral plates (15) having a mean lengthwise extent greater than the lengthwise extent of the outer and inner riddle surfaces (11-­12).
2 - Basket-frame unit as claimed in Claim 1, in which one of the link elements (21) of the basket-frame unit (10) is fixed to its respective lateral block (19) in such a way that it protrudes further laterally than the other link element (21) of the same unit (10).
3 - Basket-frame unit as claimed in Claim 1 or 2, in which the lateral plates (15) comprise a vertical tract (16) protruding substantially higher than the outer riddle surface (11).
4 - Basket-frame unit as claimed in any claim hereinbefore, in which the lateral plates (15) include a sloped tract (17) extending substantially between the outer riddle surface (11) and inner riddle surface (12).
5 - Basket-frame unit as claimed in any claim hereinbefore, in which means (18) which retain rehabilitation material are included between the outer (11) and inner (12 riddle surfaces.
6 - Basket-frame unit as claimed in any claim hereinbefore, in which the links (21) comprise a structure (22) shaped as an overturned "U" in their lower portion.
7 - Basket-frame unit as claimed in any claim hereinbefore, in which each link (21) supports its own basket-frame unit (10) and cooperates with the links (21) of the neighbouring basket-frame units (10) by means of reciprocal connecting elements (25).
8 - Basket-frame unit as claimed in any claim hereinbefore, in which in the zones of substantially horizontal running of the riddle the outer (11) and inner (12) riddle surfaces form continuous riddle surfaces together with the outer (11) and inner (12) surfaces of the neighbouring basket-frame units (10).
9 - Basket-frame unit as claimed in any claim hereinbefore, in which upper holes (120) which connect the links (21) to the basket-frame unit (10) are positioned as desired in relation to the line joining the axes of first (23) and second (24) lengthwise holes in the lower part of the link (21) so as to vary the behaviour of the outer (11) and/or inner (12) riddle surfaces advantageously at the bends of the winding of the riddle.
EP88117619A 1987-11-19 1988-10-22 Basket-frame unit for continuous endless-conveyor riddle Expired - Lifetime EP0316614B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88117619T ATE78071T1 (en) 1987-11-19 1988-10-22 BASKET ARRANGEMENT FOR CONTINUOUS, ENDLESS CONVEYOR SCREENS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT83492/87A IT1220128B (en) 1987-11-19 1987-11-19 ENDLESS CONVEYOR CONVEYOR CONVEYOR BASKET
IT8349287 1987-11-19

Publications (2)

Publication Number Publication Date
EP0316614A1 true EP0316614A1 (en) 1989-05-24
EP0316614B1 EP0316614B1 (en) 1992-07-08

Family

ID=11322556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88117619A Expired - Lifetime EP0316614B1 (en) 1987-11-19 1988-10-22 Basket-frame unit for continuous endless-conveyor riddle

Country Status (5)

Country Link
EP (1) EP0316614B1 (en)
AT (1) ATE78071T1 (en)
DE (1) DE3872663T2 (en)
ES (1) ES2034103T3 (en)
IT (1) IT1220128B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1940832A (en) * 1931-08-26 1933-12-26 Edward C Bowers And Charles L Conveyer belt
US2594991A (en) * 1946-09-16 1952-04-29 Nordberg Manufacturing Co Cribber chain excavating element
FR2370527A1 (en) * 1976-11-10 1978-06-09 Spiller Clifford IMPROVEMENT OF SCREENING OR SIEVING DEVICES
EP0184236A1 (en) * 1984-11-23 1986-06-11 DANIELI & C. OFFICINE MECCANICHE S.p.A. Machine to restore railway road beds with a continuous endless-conveyor riddle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1940832A (en) * 1931-08-26 1933-12-26 Edward C Bowers And Charles L Conveyer belt
US2594991A (en) * 1946-09-16 1952-04-29 Nordberg Manufacturing Co Cribber chain excavating element
FR2370527A1 (en) * 1976-11-10 1978-06-09 Spiller Clifford IMPROVEMENT OF SCREENING OR SIEVING DEVICES
EP0184236A1 (en) * 1984-11-23 1986-06-11 DANIELI & C. OFFICINE MECCANICHE S.p.A. Machine to restore railway road beds with a continuous endless-conveyor riddle

Also Published As

Publication number Publication date
IT8783492A0 (en) 1987-11-19
ES2034103T3 (en) 1993-04-01
ATE78071T1 (en) 1992-07-15
EP0316614B1 (en) 1992-07-08
DE3872663T2 (en) 1992-12-10
IT1220128B (en) 1990-06-06
DE3872663D1 (en) 1992-08-13

Similar Documents

Publication Publication Date Title
US3920115A (en) Monorail supported flexible frame endless conveyor
CA1164394A (en) Stockpile blending process
AU635111B2 (en) Bulk goods waggon
US3387721A (en) Bucket chain conveyor
RU2002110821A (en) Railroad Tracking Ballast Cleaning Machine
RU2022074C1 (en) Railway track ballast cleaner
JPS5836829A (en) Device for treating and collecting bulk material
EP0316614A1 (en) Basket-frame unit for continuous endless-conveyor riddle
US4892151A (en) Ballast cleaning machine
EP0571540B1 (en) Continuous gondola car
US2548061A (en) Flexible tray conveyer
CA1233137A (en) Travelling hopper belt car
RU2246568C2 (en) Track machine
SE449122B (en) SET AND DEVICE FOR UNDERGRADUATE
US3211305A (en) Caterpillar belt trains
EP0566575B1 (en) Unloading means for bulk material
RU2002130810A (en) TRAVELING MACHINE
US1706428A (en) Apparatus for grading material
SU1267487A1 (en) Discharging-crushing unit of underground hopper complex
JP3969555B2 (en) Method and apparatus for transporting excavated earth and sand in excavation work using the mountain retaining beam method
SU829939A1 (en) Method and apparatus for forming high dumps
RU2291296C1 (en) Loading and transporting tool of mining machine
SU1150184A1 (en) Steep conveyer
JPS6293111A (en) Multi-purpose conveyer device
US2747723A (en) Bucket conveyor with protected pivot shaft

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 ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19891030

17Q First examination report despatched

Effective date: 19901123

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

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

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

Ref country code: SE

Effective date: 19920708

Ref country code: NL

Effective date: 19920708

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: 19920708

Ref country code: BE

Effective date: 19920708

REF Corresponds to:

Ref document number: 78071

Country of ref document: AT

Date of ref document: 19920715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3872663

Country of ref document: DE

Date of ref document: 19920813

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920924

Year of fee payment: 5

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

Ref country code: CH

Payment date: 19921019

Year of fee payment: 5

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

Ref country code: GB

Payment date: 19921021

Year of fee payment: 5

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

Ref country code: ES

Payment date: 19921022

Year of fee payment: 5

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

Ref country code: AT

Payment date: 19921030

Year of fee payment: 5

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: 19921031

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19921230

Year of fee payment: 5

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2034103

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

Ref country code: GB

Effective date: 19931022

Ref country code: AT

Effective date: 19931022

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 THE APPLICANT RENOUNCES

Effective date: 19931023

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

Ref country code: LI

Effective date: 19931031

Ref country code: CH

Effective date: 19931031

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

Effective date: 19931022

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

Ref country code: FR

Effective date: 19940630

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: DE

Effective date: 19940701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19991007

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: 20051022