EP0322626A2 - Meuleuse portative avec capot de protection orientable - Google Patents

Meuleuse portative avec capot de protection orientable Download PDF

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Publication number
EP0322626A2
EP0322626A2 EP88120765A EP88120765A EP0322626A2 EP 0322626 A2 EP0322626 A2 EP 0322626A2 EP 88120765 A EP88120765 A EP 88120765A EP 88120765 A EP88120765 A EP 88120765A EP 0322626 A2 EP0322626 A2 EP 0322626A2
Authority
EP
European Patent Office
Prior art keywords
locking
hand tool
tool according
clamping neck
holding part
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
EP88120765A
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German (de)
English (en)
Other versions
EP0322626B1 (fr
EP0322626B2 (fr
EP0322626A3 (en
Inventor
E Fein Gmbh Co C
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein GmbH and Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6343692&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0322626(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Publication of EP0322626A2 publication Critical patent/EP0322626A2/fr
Publication of EP0322626A3 publication Critical patent/EP0322626A3/de
Publication of EP0322626B1 publication Critical patent/EP0322626B1/fr
Application granted granted Critical
Publication of EP0322626B2 publication Critical patent/EP0322626B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools

Definitions

  • the invention relates to a hand tool with a protective hood rotatably mounted on a clamping neck of the same by means of a holding part, in particular for a grinding tool of a portable angle grinding machine.
  • a hand grinder is known in which the protective hood is rotatably mounted on the clamping neck and is held with axial play, whereby to compensate for this play an axially biased spring element is used, which a fastening ring of the protective hood against Shoulder surface on the clamping neck presses. As a result, the protective hood is secured against rotation by friction.
  • the disadvantage of this device is the fact that the protective hood can be adjusted unintentionally, especially when you think that such grinding machines are often used in confusing places, the user must be sure that the protective hood is in the correct position and also remains in this.
  • the invention is therefore based on the object of improving a hand-held power tool of the generic type in such a way that unintentional adjustment of the protective hood, for example by lateral pressure, is no longer possible.
  • the advantage of the solution according to the invention can be seen in the fact that the locking elements which can be brought into engagement form a positive and non-rotatable connection between the holding part and the grinding machine housing, so that the protective hood is itself can no longer twist and that this connection can only be released against the force of the spring member. Even if the locking elements are unintentionally disengaged from one another, it is still unlikely that the protective hood itself will twist at the same time.
  • the locking elements are locking recesses provided on one part and locking bodies provided on the other part, in which case the locking bodies can engage in the locking recesses.
  • the latching depressions are bores, while in the simplest case the latching body is a pin that engages in these bores.
  • a very easy to implement implementation of the invention provides that a locking body and several locking recesses are provided, the single locking body is then arranged on the holding or locking part and the locking recesses on the other part.
  • the latching body in turn could in principle be displaceable against the respective part on which it is provided and, for example, be displaced by a special tool in such a way that it either engages in the latching depressions or not.
  • a solution has proven to be particularly expedient in which the fixing elements are arranged in a stationary manner on the holding part and the fixing part and in which the holding part and the fixing part can be tilted against one another against the force of the spring member. This means that in this case the spring element does not act directly on the locking elements themselves, but rather on the respective part, which can be tilted relative to the other. This also makes constructive simplifications possible.
  • the locking part carries the locking body and is arranged stationary on the clamping neck, while the holding part of the protective hood is provided with the locking recesses, which can be disengaged from the locking body by tilting the entire protective hood relative to the holding part.
  • the holding part is designed as a ring surrounding the clamping neck, which is preferably integrally formed on the protective hood.
  • the locking part can be a ring enclosing the clamping neck. But it is also conceivable that the locking part is advantageously designed as a lever.
  • the locking part is arranged such that it can be tilted relative to the clamping neck.
  • the corresponding holding part on the clamping neck will then be mounted so that it cannot be tilted.
  • the holding part is arranged such that it can be tilted with respect to the clamping neck, wherein in the context of the solution according to the invention either a tilting in the axial or in the radial direction of the clamping neck can be provided.
  • the locking part is arranged to be tiltable relative to the clamping neck, it is provided that the locking part has a lever with which the same can be tilted in a simple manner. So that the lever does not interfere with the use of the hand-held grinding machine according to the invention and is accessible in a simple and ergonomically advantageous manner, it is provided that the lever extends between the protective hood and the grinding machine housing.
  • the locking part With regard to a tiltable mounting of the locking part in relation to the clamping neck, it would be conceivable to mount the locking part on it with play and to place it against a shoulder, for example by means of a spring. But it is also conceivable that the locking part is made of resilient material and is thus fixed at one end to the clamping neck or on the grinding machine housing and creates by its own spring action the possibility that the locking part is so deformable that the locking body with the locking recesses can be disengaged.
  • the spring member is an annular element enclosing the clamping neck, with which the respective tiltable part is placed against a shoulder.
  • FIG. 1 An angle grinder shown in FIG. 1, designated as a whole by 1, shows a motor housing 2 and a gear housing 3.
  • a grinding spindle 4 protrudes from the gear housing 3 and carries a clamping flange 5 at its end.
  • a grinding wheel 6 is placed on this clamping flange 5 and clamped against the clamping flange 5 by a counter flange 7 of a screw that can be screwed into the grinding spindle 4.
  • the grinding wheel 6 is partially covered by a protective hood designated as a whole, which is rotatably mounted on a clamping neck 9 surrounding the grinding spindle 4 between the counter flange 5 and the gear housing 3 and mounted on the gear housing 3.
  • the clamping neck 9 is successive in a total of three sections 10 to 12 which are coaxial with the grinding spindle 4 and starting from the gear housing divided smaller outer diameter. Between these circular-cylindrical sections 10 to 12, annular contact surfaces 13 and 14 are thereby formed in planes perpendicular to the axis of rotation of the grinding spindle 4.
  • the first circular cylindrical section lying adjacent to the gear housing 3 is surrounded by a spring element 15, which is supported on the one hand on a surface 16 formed by the transmission housing 3 and perpendicular to the axis of rotation of the grinding spindle 4 and on the other hand on a ring also surrounding the first circular cylindrical section 10 17 of a locking element designated as a whole by 18. which also has a lever arm 19 molded onto the ring 17, which extends in a space between the protective hood 8 and the motor housing 2.
  • the ring 17 is pressed by the spring element 15 against an intermediate ring 20 seated on the second circular-cylindrical section 11, which in turn bears against the contact surface 13 between the circular-cylindrical section 10 and the smaller-diameter circular-cylindrical section 11.
  • the intermediate ring 20 is in turn held by a fixing ring 21, which sits on the third circular cylindrical section 12 and bears against the contact surface 14.
  • This fixing ring 21 is held by a snap ring 22, which engages in a circumferential groove 23, machined into the third circular-cylindrical section 12.
  • the intermediate ring 20 is on its side facing the fixing ring 21 with a provided radially outward and circular recess 24 open to the fixing ring 21, in which an annular holding part 25 of the protective hood 8 is rotatable coaxially to the grinding spindle 4, but is non-displaceably mounted in the axial direction.
  • This holding part 25 has holes 26 arranged at the same angular distance on a circular arc segment. One of these bores 26 engages with a pin 27 arranged on the fixing part 18 in the region of the transition between the ring 17 and the lever arm 19, which extends from the fixing part 18 through a recess 28 in the intermediate ring 20 to the holding part 25.
  • the ring 17 is held on the first circular cylindrical section 10 with play so that it can be displaced in the direction of the gear housing 3 in the axial direction of the grinding spindle 4 against the action of the spring element 15, which is, for example, a wave spring or a rubber ring .
  • the spring element 15 which is, for example, a wave spring or a rubber ring .
  • the protective hood 8 which is rotatably mounted with the holding part 25 in the intermediate ring 20, can be freely rotated around the clamping neck 9.
  • the pin 27 is moved again by the spring element 15 in the direction of the holding part 25, so that it now comes into engagement with the bore 26 opposite it and fixes the holding part 25 with the protective hood 8 in a rotationally fixed manner on the clamping neck 9. This is done in that the pin 27 is non-rotatably fixed on the clamping neck 9 through the recess 28.
  • the walls of the bores 26 are shaped so that the pin 27 cannot jump out of the bores 26 even when there is strong lateral pressure on the protective hood 8. Furthermore, in order to be able to lock the protective hood 8 in all conceivable rotational positions, it is provided that the bores 26 are provided on the holding part 25 in a large circumferential area, all of which are centered on a circular path segment concentric with the clamping neck 9.
  • FIG. 2 shows a protective hood 8 which is likewise rotatable about the clamping neck 9 by the intermediate ring 20 and the fixing ring 21 with their holding part 25.
  • the holding part 25 is not provided with bores 26 arranged coaxially to the grinding spindle 4, but with recesses 30 which extend in the radial direction from an outside of the holding part 25 in the direction of the clamping neck 9, which are preferably in the peripheral region of the holding part 25 are provided, which does not merge into the protective hood 8.
  • a pin 31 aligned in the radial direction of the clamping neck 9 engages in these recesses 30 and is held on a lever 32 made of resilient material which extends parallel to an axial direction of the clamping neck 9 on an outer side thereof so that the pin 31 protrudes from this lever 32 in the direction of the holding part 25.
  • the lever 32 is preferably made of resilient material and held on the gear housing 3, for example by means of a screw 33.
  • the pin 31 can be disengaged from the recess 30, as a result of which the protective hood 8 can be rotated on the clamping neck.
  • the lever 32 is preferably provided with a tongue 34 which extends beyond the pin 31 and forms a front end of the same and which permits simple actuation of the lever 32.
  • the lever 32 thus forms the locking part and replaces the lever 18 of the first exemplary embodiment.
  • the holding part is of identical design to that in the second exemplary embodiment and likewise has recesses 30 which extend in the radial direction towards the clamping neck 9 and are open to the outside.
  • a rocker arm 40 is provided, which is mounted rotatably about an axis 41, parallel to the axis of rotation of the grinding spindle 4, on the transmission housing 3.
  • a first lever arm 42 arranged on one side of the axis of rotation 41 bears against a spring 43 which is supported on its opposite side on the transmission housing 3 and thereby acts on the first lever arm 42 away from the transmission housing.
  • a second lever arm 44 which is opposite the first lever arm 42 with respect to the axis of rotation 41, is acted upon in the direction of the clamping flange 9, so that a pin 45 arranged at the front end of the locking part 25 of the holding part 25 is held in engagement with one of the recesses 30 becomes.
  • the lever arm 44 In order to arrange the pin 45 in engagement with the recesses 30, the lever arm 44 must be bent in the axial direction of the clamping neck 9.
  • the lever 40 is preferably provided at a rear end of the first lever arm 42 opposite the axis of rotation 41 with a pressure surface 47, which allows the same to be acted upon and thus the pin to be disengaged from the recesses 30.
  • a pressure surface 47 which allows the same to be acted upon and thus the pin to be disengaged from the recesses 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP88120765A 1987-12-24 1988-12-13 Meuleuse portative avec capot de protection orientable Expired - Lifetime EP0322626B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3744219 1987-12-24
DE19873744219 DE3744219A1 (de) 1987-12-24 1987-12-24 Handschleifmaschine mit verstellbarer schutzhaube

Publications (4)

Publication Number Publication Date
EP0322626A2 true EP0322626A2 (fr) 1989-07-05
EP0322626A3 EP0322626A3 (en) 1990-10-10
EP0322626B1 EP0322626B1 (fr) 1993-03-31
EP0322626B2 EP0322626B2 (fr) 1996-10-30

Family

ID=6343692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120765A Expired - Lifetime EP0322626B2 (fr) 1987-12-24 1988-12-13 Meuleuse portative avec capot de protection orientable

Country Status (5)

Country Link
US (1) US4924635A (fr)
EP (1) EP0322626B2 (fr)
JP (1) JPH01281874A (fr)
DE (1) DE3744219A1 (fr)
ES (1) ES2040316T5 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577574A1 (fr) * 1992-06-29 1994-01-05 Atlas Copco Tools Ab, Stockholm Meuleuse rotative pneumatique
DE19914855B4 (de) * 1999-04-01 2004-04-22 Metabowerke Gmbh Handschleifmaschine mit einer in Umfangsrichtung verstellbaren Schutzhaube
WO2007144219A1 (fr) * 2006-06-14 2007-12-21 Robert Bosch Gmbh Dispositif de fixation pour capot de protection
WO2009059839A1 (fr) * 2007-11-05 2009-05-14 Robert Bosch Gmbh Machine-outil portative
RU2501640C2 (ru) * 2008-06-20 2013-12-20 Роберт Бош Гмбх Технологическая машина, прежде всего ручная машина
DE102012112621A1 (de) 2012-12-19 2014-06-26 C. & E. Fein Gmbh Handwerkzeugmaschine mit abnehmbarer Schutzhaube
EP4279215A1 (fr) * 2022-05-18 2023-11-22 Bendel Werkzeuge GmbH & Co. KG Rectifieuse et son ensemble de protection

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163252A (en) * 1990-11-05 1992-11-17 Northwestern Equipment & Supply Co. Adjustable shield for a dynamic tool
DE4113641A1 (de) * 1991-04-26 1992-10-29 Bosch Gmbh Robert Handwerkzeugmaschine
DE4125796C1 (fr) * 1991-08-03 1992-12-24 C. & E. Fein Gmbh & Co, 7000 Stuttgart, De
JPH0663284U (ja) * 1993-02-05 1994-09-06 リョービ株式会社 動力工具の駆動部構造
US5637035A (en) * 1995-06-28 1997-06-10 Milwaukee Electric Tool Corporation Adjustable guard arrangement for power tool
SE507264C2 (sv) * 1996-06-13 1998-05-04 Atlas Copco Tools Ab Handhållet motordrivet verktyg
US5765289A (en) * 1996-12-20 1998-06-16 Fiskars Inc. Rotary cutter
US6464573B1 (en) 2000-06-30 2002-10-15 Porter-Cable Corporation Guard attachment system with knurled clamp ring
DE20304448U1 (de) * 2003-03-19 2003-06-12 Berhalter Eberhard Handarbeitsgerät
SE525836C2 (sv) * 2003-03-31 2005-05-10 Atlas Copco Tools Ab Slipmaskin med sprängskydd och spindellåsning
DE10336873B4 (de) * 2003-08-11 2007-09-20 Hilti Ag Schutzhaubenanordnung
DE10348395A1 (de) * 2003-10-17 2005-05-19 Robert Bosch Gmbh Schutzhaube für eine Elektrowerkzeugmaschine, Elektrowerkzeugmaschine sowie System mit Schutzhaube und Elektrowerkzeugmaschine
US7059947B2 (en) * 2004-05-12 2006-06-13 The Stanley Works Portable rail cutting apparatus
US20070117499A1 (en) * 2005-11-23 2007-05-24 Sunmatch Industrial Co., Ltd. Rotary protecting hood of a pneumatic grinder
DE502006006187D1 (de) * 2006-10-07 2010-04-01 Metabowerke Gmbh Elektrohandwerkzeuggerät, insbesondere ein Winkelschleifer mit einer Schutzhaube
DE102006053303A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine für ein rotierendes Werkzeug mit Schutzhaube
DE102006053301A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine für ein rotierendes Werkzeug mit Schutzhaube
DE102007041840A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube, insbesondere Winkelschleifer
DE102006053305A1 (de) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit Schutzhaube, insbesondere Winkelschleifer
DE102007000845A1 (de) * 2007-10-11 2009-04-16 Hilti Aktiengesellschaft Handwerkzeugmaschine
DE102007057032A1 (de) * 2007-11-27 2009-05-28 Robert Bosch Gmbh Handwerkzeugmaschine
DE102008040372A1 (de) * 2008-07-11 2010-01-21 Robert Bosch Gmbh Schutzhaubenverdrehsicherungsvorrichtung
DE102009017299A1 (de) * 2009-04-11 2010-10-21 Metabowerke Gmbh Schutzhaube für Elektrohandwerkzeuggeräte und Elektrohandwerkzeuggerät
JP5684056B2 (ja) * 2010-08-16 2015-03-11 株式会社マキタ 手持ち工具
JP5579575B2 (ja) * 2010-11-02 2014-08-27 株式会社マキタ ディスクグラインダ
US9120202B2 (en) 2011-06-30 2015-09-01 Black & Decker Inc. Shield assembly for a power tool
DE102011089758A1 (de) * 2011-12-23 2013-06-27 Robert Bosch Gmbh Schutzhaubenverdrehsicherungsvorrichtung
DE102012210759A1 (de) * 2012-06-25 2014-01-02 Robert Bosch Gmbh Schutzhaubenvorrichtung
DE202012102406U1 (de) 2012-06-29 2012-07-25 Sunmatch Industrial Co., Ltd. Deckelstruktur der pneumatischen Handschleifmaschine
US8939816B2 (en) 2012-07-02 2015-01-27 Sunmatch Industrial Co., Ltd. Handheld pneumatic grinder with adjustable wheel guard structure
US9555554B2 (en) 2013-05-06 2017-01-31 Milwaukee Electric Tool Corporation Oscillating multi-tool system
DE102013208809A1 (de) * 2013-05-14 2014-11-20 Robert Bosch Gmbh Schutzhaubenvorrichtung
US9475172B2 (en) * 2014-07-15 2016-10-25 Milwaukee Electric Tool Corporation Adjustable guard for power tool
USD744800S1 (en) 2014-07-16 2015-12-08 Milwaukee Electric Tool Corporation Power tool blade guard
US10201889B2 (en) * 2014-08-06 2019-02-12 Sparky Guard, LLC Fully rotatable grinder guard assembly and method for making same
US10029348B2 (en) * 2016-01-25 2018-07-24 Jose Ramirez Torque sensitive adjustable locking grinder guard
EP3251791B1 (fr) 2016-05-06 2019-03-27 Black & Decker Inc. Levier réversible pour un ensemble de protection d'un outil électrique
US10307886B2 (en) * 2017-03-17 2019-06-04 G.A.W. Inc. Guard and control apparatus for safe operation of a rotary cutter

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US3811233A (en) * 1972-11-02 1974-05-21 Cincinnati Milacron Inc Quick change guard for tool and cutter grinder
FR2213651A5 (fr) * 1973-01-10 1974-08-02 Cincinnati Milacron Inc
EP0143251A2 (fr) * 1983-10-27 1985-06-05 C. & E. FEIN GmbH & Co. Fixation de carter de protection pour meuleuse d'angle portative

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DE7334640U (de) * 1973-12-13 A Stihl Maschinenfab Schutzvorrichtung für Trennschleifer
US1850137A (en) * 1929-05-08 1932-03-22 Walter C Scott Power-actuated saw and drill mechanism
US3969856A (en) * 1973-09-25 1976-07-20 Andreas Stihl Maschinenfabrik Adjustable protective hood for a rotary tool
IT1040243B (it) * 1975-07-30 1979-12-20 Star Utensili Elett Carter di protezione pe utensili angolari portatili
US4060940A (en) * 1976-01-13 1977-12-06 The Black And Decker Manufacturing Company Adjustable guard construction for cut-off machine
DE3135820C2 (de) * 1981-09-10 1985-01-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Handschleifmaschine
DE3633943A1 (de) * 1986-10-04 1988-04-07 Licentia Gmbh Mit dem spindelhals eines handgefuehrten winkelschleifers oder dergleichen elektrowerkzeug vereinigbare schutzhaube
DE3638337A1 (de) * 1986-11-10 1988-05-19 Licentia Gmbh Spannvorrichtung fuer die schutzhaube von winkelschleifern od. dergl. elektrowerkzeuge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811233A (en) * 1972-11-02 1974-05-21 Cincinnati Milacron Inc Quick change guard for tool and cutter grinder
FR2213651A5 (fr) * 1973-01-10 1974-08-02 Cincinnati Milacron Inc
EP0143251A2 (fr) * 1983-10-27 1985-06-05 C. & E. FEIN GmbH & Co. Fixation de carter de protection pour meuleuse d'angle portative

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5384985A (en) * 1992-06-29 1995-01-31 Atlas Copco Tools Ab Pneumatic rotation grinder
EP0577574A1 (fr) * 1992-06-29 1994-01-05 Atlas Copco Tools Ab, Stockholm Meuleuse rotative pneumatique
DE19914855B4 (de) * 1999-04-01 2004-04-22 Metabowerke Gmbh Handschleifmaschine mit einer in Umfangsrichtung verstellbaren Schutzhaube
US8282446B2 (en) 2006-06-14 2012-10-09 Robert Bosch Gmbh Guard attachment device
WO2007144219A1 (fr) * 2006-06-14 2007-12-21 Robert Bosch Gmbh Dispositif de fixation pour capot de protection
EP2596906A2 (fr) 2007-11-05 2013-05-29 Robert Bosch Gmbh Machine-outil manuelle
WO2009059839A1 (fr) * 2007-11-05 2009-05-14 Robert Bosch Gmbh Machine-outil portative
US8454412B2 (en) 2007-11-05 2013-06-04 Robert Bosch Gmbh Handheld power tool
CN101848790B (zh) * 2007-11-05 2013-08-21 罗伯特·博世有限公司 手持式工具机
EP2596906A3 (fr) * 2007-11-05 2013-10-16 Robert Bosch Gmbh Machine-outil manuelle
RU2501640C2 (ru) * 2008-06-20 2013-12-20 Роберт Бош Гмбх Технологическая машина, прежде всего ручная машина
DE102012112621A1 (de) 2012-12-19 2014-06-26 C. & E. Fein Gmbh Handwerkzeugmaschine mit abnehmbarer Schutzhaube
EP4279215A1 (fr) * 2022-05-18 2023-11-22 Bendel Werkzeuge GmbH & Co. KG Rectifieuse et son ensemble de protection

Also Published As

Publication number Publication date
EP0322626B1 (fr) 1993-03-31
DE3744219C2 (fr) 1990-01-04
EP0322626B2 (fr) 1996-10-30
JPH01281874A (ja) 1989-11-13
ES2040316T5 (es) 1997-02-16
DE3744219A1 (de) 1989-07-06
ES2040316T3 (es) 1993-10-16
US4924635A (en) 1990-05-15
JPH0579466B2 (fr) 1993-11-02
EP0322626A3 (en) 1990-10-10

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