EP0657123A1 - Elément de levage plat - Google Patents

Elément de levage plat Download PDF

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Publication number
EP0657123A1
EP0657123A1 EP94116546A EP94116546A EP0657123A1 EP 0657123 A1 EP0657123 A1 EP 0657123A1 EP 94116546 A EP94116546 A EP 94116546A EP 94116546 A EP94116546 A EP 94116546A EP 0657123 A1 EP0657123 A1 EP 0657123A1
Authority
EP
European Patent Office
Prior art keywords
hollow profile
profile rail
lifting element
element according
flat lifting
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
EP94116546A
Other languages
German (de)
English (en)
Other versions
EP0657123B1 (fr
Inventor
Johannes Schneider
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.)
Dewert Antriebs und Systemtechnik GmbH and Co KG
Original Assignee
Dewert Antriebs und Systemtechnik GmbH and Co KG
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 Dewert Antriebs und Systemtechnik GmbH and Co KG filed Critical Dewert Antriebs und Systemtechnik GmbH and Co KG
Publication of EP0657123A1 publication Critical patent/EP0657123A1/fr
Application granted granted Critical
Publication of EP0657123B1 publication Critical patent/EP0657123B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C19/00—Bedsteads
    • A47C19/04—Extensible bedsteads, e.g. with adjustment of length, width, height
    • A47C19/045—Extensible bedsteads, e.g. with adjustment of length, width, height with entire frame height or inclination adjustments
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/04—Tables with tops of variable height with vertical spindle
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/20—Telescopic guides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/018—Control or drive mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/10—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated with telescopic sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0051—Telescopic
    • A47B2200/0052—Telescopic with two telescopic parts
    • A47B2200/0053—Flat lifting device for desks with two telescopic sections
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor
    • A47B2200/0059—Leg adjustment with a motor, e.g. an electric motor in telescoping table legs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
    • A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
    • A61G7/012—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame raising or lowering of the whole mattress frame

Definitions

  • the present invention relates to a flat lifting element, which is used in particular for furniture.
  • furniture is, for example, height-adjustable tables, hospital and nursing beds, slatted frames, television armchairs and the like.
  • the previously known actuators are specially designed for the respective purpose.
  • the present invention has for its object to provide a flat lifting element which is structurally simple and compact, but is relatively high load and universally applicable.
  • the object is achieved by an outer and an inner hollow profile rail with a closed cross section and in each case substantially greater width than thickness and by an electromotive actuator, the linearly movable output member is coupled to the outer or inner hollow profile rail.
  • the flat lifting element In the case of the flat lifting element according to the invention, essentially only the two hollow profile rails are required in addition to the electromotive actuator. These are preferably made of light metal, for example aluminum, to reduce weight. Such profiles can be obtained commercially, so that the flat lifting element can be manufactured inexpensively.
  • the flat lifting element is suitable for all installation positions, so that it can be used universally. In addition, it can be optically very well adapted to furniture fronts, for example, since the visible outer surfaces can be coated accordingly or covered with a decorative film.
  • the two hollow profile rails are relatively thin, a correspondingly small installation space is required, which further increases the possible uses.
  • the coupling of the output member of the electromotive actuator to the inner or outer hollow profile rail results in a structurally advantageous solution since at least some of the components of the electromotive actuator can be accommodated inside the inner hollow profile rail. As a result, these components are very well protected. Rectangular profiles are possible as hollow profiles, but the side edges are different. Since the sharp edges interfere with different installation cases, it is provided in a further embodiment that the opposite longitudinal side regions run in an arc, preferably in a semicircle.
  • the cross-section of the outer contour of the inner hollow profile rail matches the inner contour of the outer hollow profile rail, or that the outer contour of the inner hollow profile rail runs at a small and constant distance from the inner contour of the outer profile rail, forming an annular gap.
  • the mutually facing surfaces of the outer and inner hollow profile rails are provided with interlocking profiles that extend in the direction of movement of the extendable hollow profile rail.
  • these profiles can be produced in the simplest way if the profiles are formed from groove-like indentations provided on at least one broad side of the inner hollow profile rail and webs engaging in the indentations, which are attached to the inner side of the outer hollow profile rail that is facing. This also improves the guidance of the two hollow profile rails to one another.
  • the cross sections of the outer and inner hollow profile rails are rectangular, that the thickness of the narrow sides is greater than that of the broad sides and that in each narrow side there is at least one screw-in groove which is open on one side and has a circular cross section. Since the narrow sides are reinforced, there is an additional increase in the stability of the hollow profile rails.
  • the screw-in grooves allow suitable connecting parts or stop parts to be screwed onto the inner and outer hollow profile rail. This version should also not be stressed by sharp edges.
  • the corners of the hollow profile rails are rounded, or they run in a circular arc with a relatively small radius.
  • the outer hollow profile rail is provided on the inside with a plurality of longitudinally extending grooves into which guide rods are inserted, which preferably consist of a plastic.
  • These grooves or guide rods are expediently located in the opposite longitudinal side areas. Since the surfaces contacting the inner profile rail protrude from the inner surface of the outer profile rail, these guide rods can also be seen as spacer rods.
  • the grooves it is also possible for the grooves to be arranged in the inner hollow profile rail and for the guide rods to be firmly inserted therein so that they are carried along in the event that the inner hollow profile rail is moved. The opposite of the outer surface protruding surfaces then contact the inner surface of the outer hollow profile rail.
  • the electromotive actuator is usually provided with an adjusting spindle which can be driven in rotation.
  • This adjusting spindle is expediently protected in the inner hollow profile rail.
  • the motor and possibly the transmission are then in the lower region of the flat lifting element.
  • a flexible drive means is, for example, a generally known flexible shaft.
  • the flat lifting element 10 shown in FIG. 1 essentially consists of an outer hollow profile rail 11, an inner hollow profile rail 12 and an electromotive drive 13.
  • the walls of the two hollow profile rails 11, 12 are cut open to show that the rotationally drivable threaded spindle 14 of the electric motor drive 13 is arranged upright in the inner hollow profile rail 12.
  • the electromotive drive 13 includes a geared motor 16 to drive the threaded spindle 14.
  • the outer hollow profile rail 11 and the inner hollow profile rail 12 are made from an aluminum profile, the outer hollow profile rail 11 enclosing the inner hollow profile rail 12 in a closed manner according to FIG.
  • the widths are in a ratio of approximately 5: 1 to the thicknesses of the two hollow profile rails 11, 12.
  • FIG. 3 it is indicated that the end of the extendable hollow profile rail opposite the electromotive drive 13, in this exemplary embodiment the inner hollow profile rail 12, is provided with a connecting part 18. From the figures it can be seen that the flat lifting element 10 is suitable for all installation positions.
  • the narrow sides are designed as a semicircle.
  • the narrow sides are flat, but the corners run in a radius.
  • the cross sections of the hollow profile rails 11, 12 can be seen as examples, as can the design of the electromotive drive 13.
  • the hollow profile rails 11, 12 are made from extruded extruded profiles.
  • the longitudinal side regions can be formed by 1 tube each with a circular cross section, which are then connected to one another by filling plates.
  • Figure 2 shows that in the arcuate longitudinal side area of the outer hollow profile rail 11 3 grooves are incorporated on the inside, into which plastic guide rods 17 are inserted.
  • the guide rods 17 contact the outer surface of the inner hollow profile rail 12, since the contact surfaces protrude from the inner surface of the outer hollow profile rail 11.
  • This arrangement reduces friction.
  • the outer surface of the inner hollow profile rail 12 runs at a short distance from the inner surface of the outer hollow profile rail 11. From FIG. 2 it is readily apparent that the grooves can also be provided on the outside in the inner hollow profile rail 12, so that the projecting surfaces are the inner surfaces of the Contact the outer hollow profile rail 11.
  • the outer surface of the inner hollow profile rail 12 or the inner surface of the outer hollow profile rail 11 can either be provided or glued in whole or in part with a friction-reducing coating, for example with a film, in a manner not shown.
  • the friction-reducing design can also be produced in a corresponding manner in the exemplary embodiments according to FIGS. 3 to 5.
  • FIG. 3 is intended to show one way in which the stability can be increased and the transverse forces that occur can be better removed.
  • the hollow profile rails 11, 12 are provided with interlocking profiles.
  • FIG. 3 shows that in the case of the rectangular cross section, both the outer hollow profile rail 11 and the inner hollow profile rail 12 can be designed with reinforced narrow side walls. Longitudinal screw-in grooves 21 are arranged in the narrow side walls in order, for example, to fasten the connecting part 18 to the extendable hollow profile rail. The grooves are circular in cross section, but open on the inner sides facing each other.
  • FIG. 3 also shows that a connection part 22 can also be fixed on the lower end face assigned to the electric motor drive.
  • Reference number 23 denotes a connecting cable equipped with a plug.
  • FIG. 5 shows an embodiment in which the outer hollow profile rail 11 is slipped over the inner hollow profile rail 12. So that the outer hollow profile rail 11 can be moved by the threaded spindle 14, a longitudinally extending profile piece 26 in the form of a square tube is firmly inserted in the interior of the hollow profile rail 11. The profile piece 26 is somewhat shorter than the hollow profile rail 11. The end face assigned to the electric motor drive 13 is at a distance from the assigned end of the hollow profile rail 11. The profile piece 26 is firmly connected to the block-like nut 15. By turning the threaded spindle 14, the outer hollow profile rail 11 is displaced with respect to the inner hollow profile rail 12. It should also be mentioned that the hollow profile rails 11, 12 in the exemplary embodiments according to FIGS.
  • the two end positions of the movable hollow profile rails 11 and 12 are specified by limit switches, not shown. These limit switches can be fixed on a perforated rail, so that they can be brought into another position in a simple manner if, for example, the maximum stroke of the hollow profile rail 11 or 12 to be adjusted is not to be used.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nursing (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Transmission Devices (AREA)
  • Vehicle Body Suspensions (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)
EP94116546A 1993-12-06 1994-10-20 Elément de levage plat Expired - Lifetime EP0657123B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9318553U 1993-12-06
DE9318553U DE9318553U1 (de) 1993-12-06 1993-12-06 Flachhubelement
DE9415930U 1994-10-04
DE9415930U DE9415930U1 (de) 1993-12-06 1994-10-04 Flachhubelement

Publications (2)

Publication Number Publication Date
EP0657123A1 true EP0657123A1 (fr) 1995-06-14
EP0657123B1 EP0657123B1 (fr) 1998-03-04

Family

ID=25961482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116546A Expired - Lifetime EP0657123B1 (fr) 1993-12-06 1994-10-20 Elément de levage plat

Country Status (8)

Country Link
US (1) US5626328A (fr)
EP (1) EP0657123B1 (fr)
JP (1) JPH07308226A (fr)
AT (1) ATE163511T1 (fr)
CA (1) CA2137317A1 (fr)
DE (3) DE9318553U1 (fr)
DK (1) DK0657123T3 (fr)
ES (1) ES2113028T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29519456U1 (de) * 1995-12-08 1996-03-07 Littec G. Litterst GmbH Technische Vertretungen, 79576 Weil am Rhein Hubsäule
ES2127130A1 (es) * 1996-05-06 1999-04-01 Dewert Antriebs Systemtech Funda de proteccion para un mecanismo de accionamiento por motor elec-trico para muebles.
CN109008346A (zh) * 2018-07-31 2018-12-18 万志平 一种智能家具底座

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29702545U1 (de) * 1997-02-14 1997-03-27 RK Rose + Krieger GmbH & Co. KG Verbindungs- und Positioniersysteme, 32423 Minden Arbeitstisch
DE29923059U1 (de) * 1999-11-11 2000-05-25 Dewert Antriebs- Und Systemtechnik Gmbh & Co. Kg, 32278 Kirchlengern Elektromotorische Verstellanordnung
DE20302137U1 (de) 2002-09-16 2003-04-24 Dewert Antriebs- und Systemtechnik GmbH & Co KG, 32278 Kirchlengern Elektromotorischer Möbelantrieb
KR100490917B1 (ko) * 2002-11-29 2005-05-19 이방수 핸드 드라이어
KR100806540B1 (ko) * 2007-02-09 2008-02-25 코리아판서시스템(주) 멀티미디어강의대용 높낮이조절형 거치대
DE102009015690A1 (de) 2009-03-31 2010-10-07 Logicdata Electronic & Software Entwicklungs Gmbh Linearantrieb und Tisch mit Linearantrieb
JP1559697S (fr) * 2015-10-19 2016-09-26
USD815477S1 (en) * 2016-06-27 2018-04-17 Unifor S.P.A. Height adjustable table leg
US10334948B2 (en) * 2017-05-14 2019-07-02 Loctek Inc. Electric shelf
CN106974446A (zh) * 2017-05-14 2017-07-25 乐歌人体工学科技股份有限公司 电动置物架
US10758039B2 (en) * 2018-06-11 2020-09-01 Workrite Ergonomics, Inc. Platform with adjustable height
DE202018103610U1 (de) * 2018-06-26 2019-09-27 Grass Gmbh Linearantrieb, Möbelteil oder Haushaltsgerät-Teil und Möbel oder Haushaltsgerät
KR102072766B1 (ko) * 2018-07-20 2020-02-03 오승훈 스크류 잭
JP7326665B2 (ja) * 2019-10-29 2023-08-16 株式会社イトーキ 間仕切装置及び什器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2368748A (en) * 1943-02-19 1945-02-06 Hard Mfg Company Over-bed table
DE2301305A1 (de) * 1972-01-11 1973-07-19 Hansrudolf Zollinger Tisch
EP0551639A1 (fr) * 1992-01-16 1993-07-21 Walter Waibel Pied pour table de bureau, de laboratoire ou de travail
EP0561136A1 (fr) * 1992-03-17 1993-09-22 Walter Waibel Dispositif de réglage pour table réglable en hauteur

Family Cites Families (12)

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US2683341A (en) * 1952-10-22 1954-07-13 Joseph W Kock Lathe grinder
US3022043A (en) * 1960-09-16 1962-02-20 Dewey S Weiss Quick action jack
US3210846A (en) * 1962-01-26 1965-10-12 Burton E Balkin Dental table
US3537762A (en) * 1967-05-26 1970-11-03 Alois Lodige Guide system with precision adjustment for telescopic components
US4206910A (en) * 1978-06-28 1980-06-10 Biesemeyer William M Table saw fence system
JPS5833162A (ja) * 1981-08-21 1983-02-26 Eiken Kagaku Kk エストリオ−ル−１６α−グルクロナイド測定用抗原およびその製造法
JPS61291217A (ja) * 1985-06-18 1986-12-22 Nissan Motor Co Ltd 車両用燃料タンクの蒸発燃料流出防止装置
US5064318A (en) * 1988-02-19 1991-11-12 Excellon Automation Precision guidance apparatus
GB8808279D0 (en) * 1988-04-08 1988-05-11 Lk Tool Co Ltd Linear guiding apparatus
JPH0710095Y2 (ja) * 1990-06-29 1995-03-08 日本トムソン株式会社 防振性を有する直動転がり案内ユニット
DE4106610A1 (de) * 1991-03-01 1992-09-03 Waibel Walter Hoehenverstellbarer tisch mit einer linear- oder geradfuehrung
US5365862A (en) * 1992-12-09 1994-11-22 Joerns Healthcare Inc. Table height adjusting mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2368748A (en) * 1943-02-19 1945-02-06 Hard Mfg Company Over-bed table
DE2301305A1 (de) * 1972-01-11 1973-07-19 Hansrudolf Zollinger Tisch
EP0551639A1 (fr) * 1992-01-16 1993-07-21 Walter Waibel Pied pour table de bureau, de laboratoire ou de travail
EP0561136A1 (fr) * 1992-03-17 1993-09-22 Walter Waibel Dispositif de réglage pour table réglable en hauteur

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29519456U1 (de) * 1995-12-08 1996-03-07 Littec G. Litterst GmbH Technische Vertretungen, 79576 Weil am Rhein Hubsäule
ES2127130A1 (es) * 1996-05-06 1999-04-01 Dewert Antriebs Systemtech Funda de proteccion para un mecanismo de accionamiento por motor elec-trico para muebles.
CN109008346A (zh) * 2018-07-31 2018-12-18 万志平 一种智能家具底座

Also Published As

Publication number Publication date
DE59405375D1 (de) 1998-04-09
DE9415930U1 (de) 1995-01-19
DK0657123T3 (da) 1998-09-28
DE9318553U1 (de) 1994-02-03
JPH07308226A (ja) 1995-11-28
EP0657123B1 (fr) 1998-03-04
ATE163511T1 (de) 1998-03-15
ES2113028T3 (es) 1998-04-16
US5626328A (en) 1997-05-06
CA2137317A1 (fr) 1995-06-07

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