EP0150809A2 - Dispositif pour évacuer et empiler des pièces de tôle tombant derrière la ligne de coupe d'une cisaille guillotine - Google Patents

Dispositif pour évacuer et empiler des pièces de tôle tombant derrière la ligne de coupe d'une cisaille guillotine Download PDF

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Publication number
EP0150809A2
EP0150809A2 EP85100693A EP85100693A EP0150809A2 EP 0150809 A2 EP0150809 A2 EP 0150809A2 EP 85100693 A EP85100693 A EP 85100693A EP 85100693 A EP85100693 A EP 85100693A EP 0150809 A2 EP0150809 A2 EP 0150809A2
Authority
EP
European Patent Office
Prior art keywords
sheet metal
accelerator
fingers
metal support
scraper
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
EP85100693A
Other languages
German (de)
English (en)
Other versions
EP0150809B1 (fr
EP0150809A3 (en
Inventor
Eduard Hänni
Urs Wälchli
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.)
Haemmerle AG Maschinenfabrik
Original Assignee
Haemmerle AG Maschinenfabrik
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 Haemmerle AG Maschinenfabrik filed Critical Haemmerle AG Maschinenfabrik
Publication of EP0150809A2 publication Critical patent/EP0150809A2/fr
Publication of EP0150809A3 publication Critical patent/EP0150809A3/de
Application granted granted Critical
Publication of EP0150809B1 publication Critical patent/EP0150809B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
    • B65H29/34—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from supports slid from under the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/20—Storage arrangements; Piling or unpiling
    • B21D43/22—Devices for piling sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/28—Associations of cutting devices therewith
    • B21D43/287—Devices for handling sheet or strip material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2033—Including means to form or hold pile of product pieces
    • Y10T83/2037—In stacked or packed relation
    • Y10T83/2057—Including means to deliver individual pieces to a stack holder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6539—With means for transverse positioning of work on a moving conveyor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/654—With work-constraining means on work conveyor [i.e., "work-carrier"]
    • Y10T83/6568—With additional work-locating means on work-carrier
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/727—With means to guide moving work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/727—With means to guide moving work
    • Y10T83/741—With movable or yieldable guide element
    • Y10T83/743—Opposed to work-supporting surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/727—With means to guide moving work
    • Y10T83/744—Plural guide elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y10T83/7487—Means to clamp work
    • Y10T83/7573—Including clamping face of specific structure

Definitions

  • the present invention relates to a device for guiding away and stacking sheet metal sections occurring behind the cutting point of sheet metal shears, with the aid of a rake-shaped sheet metal support which can be moved in the plane of the sheet metal sections and with which a synchronously movable scraper interacts.
  • the driver bracket which has now moved away from the operating range of the actuation curve, falls down due to its own weight, but remains with the upper bent end of the hook on the edge of the sheet metal strip underneath and takes the sheet metal strip with it. Shortly before the stop has reached the stacking point desired for the sheet metal strip, a delay occurs in which the support rake and the stop are delayed in such a way that the sheet metal strip performs a relative movement against the stop on the support rake. The rear edge of the sheet metal strip should leave the upper bent hook end of the catch bracket. Due to its own weight, the catch bracket falls down onto the stop in the support rake and will assume the rest position. The stop remains at the predetermined point, while the support rake continues to accelerate its backward movement until it completely withdraws from the area of the stacking point. The sheet metal strip held back by the stationary stop falls onto the intended stacking point.
  • a disadvantage of this design is that the support rake must first be accelerated, decelerated in the area of the stacking point and then accelerated again. It is usually necessary to stop at the stacking point.
  • Another disadvantage is that the folding of the hook-shaped bracket end cannot be secured properly, so that the sheet metal strip is often not released by the bracket and the sheet metal section clamped between the stop and the bracket is compressed as the support rake continues to move. Finally, the sheet stack cannot be centered properly.
  • the object of the invention is to propose a device in which the rake-shaped sheet metal support can be retracted at a constant speed, so that a speed deceleration and subsequent acceleration in the area of the stacking point no longer appear to be necessary. It should also be prevented that the The sheet metal section is compressed or otherwise damaged during transport to the stacking point. Finally, the sheet metal sections should be perfectly centered.
  • FIG. 1 denotes a conveyor belt, which is only partially drawn and is used to lead away sheet metal sections that occur behind sheet metal shears.
  • the tin snips are not shown and is conventionally trained.
  • the conveyor belt 1 conveys the sheet metal sections 2 to a stacking point 12a.
  • the conveyor belt 1 is subsequently provided with a rake-shaped sheet metal support 3, which has a surface 3a that rises in relation to the horizontal to accommodate the sheet metal section that is being conveyed.
  • a driven, vertically adjustable roller 4 is arranged, which extends across the conveyor belt 1 and conveys the sheet metal sections 2 arriving at the conveyor belt away from the conveyor belt onto the rake-shaped sheet metal support 3.
  • These stops 5 are used for exact centering of the sheet metal sections 2 on the rake-shaped sheet metal support 3. In this way, it is achieved that each of the sheet metal sections 2 conveyed one after the other always assumes the same position on the sheet metal support 3.
  • An accelerator 6 is arranged above the sheet metal support 3, which is horizontally movable in the conveying direction of the sheet metal sections 2 on lateral rails (not shown in more detail) and is connected to a drive rod 7 which extends parallel to the rake-shaped sheet metal support 3 and together with the accelerator 6 in suitable guides (not shown) can be moved horizontally.
  • the accelerator 6 is provided with vertically downwardly extending fingers 8, which are arranged vertically adjustable in a frame 9 of the accelerator.
  • the arrangement is such that the fingers 8 can be lowered from the position shown in FIG. 1 by hydraulic or pneumatic means, the fingers 8 hanging down under their own weight and being able to move freely upwards in a guide.
  • a stripper 10 is arranged horizontally movable along the driving rod 7 in the conveying direction.
  • This scraper 10 is also provided with vertically downwardly directed fingers 11, which are arranged in a vertically liftable and lowerable frame 12 freely movable in the vertical direction within certain limits.
  • the wiper 10 and the accelerator 6 will be described in more detail later with reference to FIGS. 7 to 9.
  • the transversely movable side stops 5 are moved together so that the sheet metal section 2 is exactly centered on the rake-shaped sheet metal support 3.
  • the fingers 8 of the accelerator 6 are then lowered by lowering the frame 9.
  • the scraper 10 is moved in the direction opposite to the conveying direction, ie from right to left in FIG. 2.
  • the sheet metal section 2 is clamped between the fingers 8 of the stripper 10 and the fingers 11 of the accelerator 6, as can be seen from FIG. 3.
  • further centering takes place through the side stops 5, so that the sheet metal section assumes its final, precisely centered position on the rake-shaped sheet metal support 3.
  • the side stops 5 are then moved away to the side.
  • the wiper is provided with a holding device 33, a firm connection of which is formed between the accelerator 6 and the wiper 10 when it is actuated.
  • FIG. 4 The figure shows that the stripper 10 is clamped on the driving rod 7, so that the distance between the stripper 10 and accelerator 6 cannot be changed.
  • the entire device ie the rake-shaped sheet metal support 3, the accelerator 6 and the stripper 10 together with the clamped sheet metal section 2 is moved to the desired stacking position in FIG. 5 to the right.
  • the accelerator 6 and the wiper 10 connected to it are clamped together with the wiper between them ten sheet section 2 held while the rake-shaped sheet metal support 3 is moved at undiminished speed in the end position.
  • the rake-shaped sheet metal support 3 has moved from the position shown in FIG. 5 into the position shown in FIG. 6, the sheet metal section 2 lying on the sheet metal support 3 falls freely onto the stack 12a underneath, as shown in FIG Fig. 6 can be seen.
  • the sheet metal section 2 is accompanied by the fingers 8 of the accelerator 6 and by the fingers 11 of the stripper 10, which, as mentioned, are freely movable within certain limits in low-friction guides of the associated frames 9 and 12.
  • the fingers 8 and 11 are initially in their upper position and fall into their lower position after the sheet metal support 3 has been removed.
  • the prerequisite was that the horizontal path of the sheet metal support 3 was at such a distance below the accelerator and the scraper that the fingers 8 and 11 assume their upper end position. It is thereby achieved that the sheet metal section maintains its aligned position determined by the accelerator 6 and stripper 10 in the longitudinal direction and by the side stops 5 in the transverse direction during the falling movement and assumes a precisely predetermined position on the stack 12a.
  • 7 shows the conveyor belt 1 again with the driven roller 4 arranged at the end of the conveyor belt, which is raised and lowered by means of two side supports 4a bar 21 is arranged.
  • the roller 4 conveys the sheet metal section 2 onto the adjacent device arranged behind the conveyor belt 1.
  • This has the rake-shaped sheet metal support 3, which is fastened movably in the horizontal direction at its end facing away from the conveyor belt 1.
  • a side stop 5 can be seen from the two side stops in FIG. 7.
  • These side stops are displaceable in guides 14 by means of rollers 14a, which guides 14 extend in the transverse direction.
  • the side stops 5 have downwardly directed fingers 15 with which the sheet metal section is aligned.
  • the movement of the side stops 5 is controlled by separate oil motors 5a.
  • the accelerator 6 is designed as a slide and can be moved along lateral guides 16 along which guide rollers 17 slide. These are each arranged on a side plate 18, which are connected by a U-rail 19 (FIGS. 7 and 8).
  • the U-rail 19 is fastened to a T-rail 20 which extends between the two side plates 18 and is fastened to these at both ends.
  • the horizontal, flat-iron parts 19a of the U-rail 19 are provided with bores 22 which form guides for vertical and iron-shaped fingers 23 which are movable in these guides.
  • Each six fingers are combined to form a segment 24, only one segment 24 being shown in FIG. 8. However, there are a total of five segments 24.
  • Holding tabs 25 provided with bores are provided to form the segments 24.
  • the fingers 23 can assume three positions, namely a raised upper position, a middle position in which they rest on the rake-shaped sheet metal support 3 and a lower position in which they place the sheet metal section 2.
  • the adjustment is made by pneumatic or hydraulic means, which are known per se.
  • the driving rod 7 described in connection with FIGS. 1 to 6 can also be seen in FIG. 8. It leads to the scraper 10, which is shown in a view in FIG. 7 and in a diagram in FIG. 9.
  • the stripper 10 is arranged on the two lateral guides 16 already mentioned and, like the accelerator 6, has two side plates 26 which can be moved along the guides 16 by means of four rollers 27 each.
  • the two side plates 26 are connected to one another by a bar 28 and by a U-bar 29, a U-rail 31 having its opening against the accelerator 6 being arranged with the aid of vertically adjustable guides 30.
  • fingers 32 are accommodated in segments, which can be brought into the desired position hydraulically or pneumatically with two cylinders. Since the rake-shaped sheet metal support 3 has a certain slope, this can be compensated for by the adjustment of the guides 30.
  • the scraper 10 is adjusted to the width of the sheet metal section 2, so that the fingers 23 and 32 rest on the sheet metal section 2 and the position of the scraper 10 is held by a clamping device 33, which clamps the driving rod 7 guided through the clamping device.
  • each finger 23 or 32 consists of a cylindrical hollow body 34 which is provided at the upper end with a stop head 35 which has a damping ring 36.
  • a damping piston 37 which is equipped with a spiral spring 38. This is supported against a cylindrical closure 39, which closes the interior 40 of the hollow body 34. Furthermore, there is an inertial body 41 in space 40, which is filled with oil. When the closure side 39 strikes against one the pad is absorbed by the piston 37 and the inertial body 41, so that the fingers 23 and 32 cannot spring back.
  • the fingers 23 and 32 can be leaned against the sheet edge and cannot move in free fall, but can be controlled electronically.
  • the distance between the two parts 6 and 10 can be set as desired.
  • the scraper 10 By actuating the clamping device 33, the scraper 10 is locked on the rod 7.
  • the accelerator 6 and the scraper 10 can be driven with the aid of a toothed rack with which corresponding drive wheels of the accelerator 6 and the scraper 10 mesh.
  • the side stops 5 do not have to be movable in the longitudinal direction, which simplifies construction brings itself. In contrast, the alignment on the stack 12a would cause difficulties, since in this case the side stops would also have to be movable in the longitudinal direction, which would result in a significant increase in the cost and complexity of the design.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Accessories And Tools For Shearing Machines (AREA)
EP85100693A 1984-01-30 1985-01-24 Dispositif pour évacuer et empiler des pièces de tôle tombant derrière la ligne de coupe d'une cisaille guillotine Expired EP0150809B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT295/84 1984-01-30
AT0029584A AT380415B (de) 1984-01-30 1984-01-30 Einrichtung zum wegfuehren und stapeln von blechabschnitten

Publications (3)

Publication Number Publication Date
EP0150809A2 true EP0150809A2 (fr) 1985-08-07
EP0150809A3 EP0150809A3 (en) 1987-05-06
EP0150809B1 EP0150809B1 (fr) 1989-08-09

Family

ID=3486749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100693A Expired EP0150809B1 (fr) 1984-01-30 1985-01-24 Dispositif pour évacuer et empiler des pièces de tôle tombant derrière la ligne de coupe d'une cisaille guillotine

Country Status (5)

Country Link
US (2) US4644834A (fr)
EP (1) EP0150809B1 (fr)
JP (1) JPS60167708A (fr)
AT (1) AT380415B (fr)
DE (1) DE3572131D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010023250A1 (de) 2010-06-09 2011-12-15 Baumer Innotec Ag Messvorrichtung zum Messen von Verformungen elastisch verformbarer Objekte
CN108858364A (zh) * 2018-06-06 2018-11-23 黑龙江省农业机械工程科学研究院 可降解钵体苗带钵体苗单元切割装置

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
US5092454A (en) * 1988-11-09 1992-03-03 Acme Manufacturing Pallet for an integrated buffing and grinding system
CH682999A5 (fr) * 1990-04-25 1993-12-31 Bobst Sa Dispositif de taquage pour une station d'introduction de machine de travail, tel que découpage ou impression, d'élements en plaque ou feuilles en vue de la production d'emballages.
US5199289A (en) * 1991-09-13 1993-04-06 Hinson Virgil H Collision repair rack system
US5239854A (en) * 1992-05-27 1993-08-31 Hinson Virgil H Pivoted body and fire straightening rack
US5408737A (en) * 1993-10-04 1995-04-25 Solar Turbines Incorporated Apparatus for stabilizing a work piece of ring configuration
CN102284741A (zh) * 2011-05-13 2011-12-21 鹤山市科盈自动化设备有限公司 带分料机构的双梯形自动剪切机
CN114101366B (zh) * 2021-10-11 2023-12-26 佛山市三水凤铝铝业有限公司 一种用于型材生产线的设备

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US553159A (en) * 1896-01-14 Mechanism for printing upon wood
US1973749A (en) * 1929-04-06 1934-09-18 Cleveland Folding Mach Co Sheet feeding apparatus
US2072667A (en) * 1934-08-02 1937-03-02 American Brass Co Article piler
US2464173A (en) * 1945-11-02 1949-03-08 Broadmeyer Albert Conveyer and guide
US2698661A (en) * 1950-03-24 1955-01-04 Fred L Macquarrie Sheet metal slitter
DE1652759A1 (de) * 1951-01-28 1971-06-09 Fischer Maschf Karl E Stapelvorrichtung
US2928559A (en) * 1957-02-25 1960-03-15 Bitco Inc Lumber stacker
US3001787A (en) * 1958-12-17 1961-09-26 American Can Co Slitting machine
CH367437A (de) * 1959-04-13 1963-02-15 Mueller Ag Ablege- und Stapelvorrichtung für Tafelmaterial, insbesondere Furniertafeln
US3717336A (en) * 1971-11-08 1973-02-20 Fmc Corp Sheet feeding and aligning apparatus
GB1521748A (en) * 1975-09-03 1978-08-16 Alcan Res & Dev Apparatus for loading stillages
DE2551497C3 (de) * 1975-11-17 1982-02-11 Heinrich Georg GmbH Maschinenfabrik, 5910 Kreuztal Vorrichtung zum kantengleichen Stapeln von Transformatorkernblechen
DE2756173C3 (de) * 1977-12-16 1980-06-26 Gerhard Van 6368 Bad Vilbel Hasseln Einrichtung zum Stapeln von nach ihrem Zuschnitt auf der Ruckseite einer Schere anfallenden Blechen
DE2840668A1 (de) * 1978-09-19 1980-03-27 Haemmerle Ag Einrichtung zum wegfuehren und stapeln von in verbindung mit einer blechschere hinter der schneidstelle derselben anfallenden blechabschnitte
DE2910197C3 (de) * 1979-03-15 1981-08-20 Hämmerle AG, Zofingen Vorrichtung zum Schneiden von Blechtafeln und Stapeln der abgetrennten Blechabschnitte
US4456116A (en) * 1980-02-19 1984-06-26 Jarman David J Shear front feed system
US4553795A (en) * 1982-04-02 1985-11-19 Shozo Takagi Mold supporting arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010023250A1 (de) 2010-06-09 2011-12-15 Baumer Innotec Ag Messvorrichtung zum Messen von Verformungen elastisch verformbarer Objekte
CN108858364A (zh) * 2018-06-06 2018-11-23 黑龙江省农业机械工程科学研究院 可降解钵体苗带钵体苗单元切割装置

Also Published As

Publication number Publication date
US4644834A (en) 1987-02-24
US4700599A (en) 1987-10-20
JPS60167708A (ja) 1985-08-31
ATA29584A (de) 1985-10-15
DE3572131D1 (en) 1989-09-14
AT380415B (de) 1986-05-26
EP0150809B1 (fr) 1989-08-09
EP0150809A3 (en) 1987-05-06

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