EP0333710A1 - Fixing recess for a protective cover for portable grinders. - Google Patents
Fixing recess for a protective cover for portable grinders.Info
- Publication number
- EP0333710A1 EP0333710A1 EP19870905603 EP87905603A EP0333710A1 EP 0333710 A1 EP0333710 A1 EP 0333710A1 EP 19870905603 EP19870905603 EP 19870905603 EP 87905603 A EP87905603 A EP 87905603A EP 0333710 A1 EP0333710 A1 EP 0333710A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- protective hood
- size
- locking member
- locking
- fastening
- 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
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 103
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 238000003780 insertion Methods 0.000 claims description 39
- 230000037431 insertion Effects 0.000 claims description 39
- 239000002991 molded plastic Substances 0.000 claims 1
- 238000005266 casting Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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 is based on a protective hood for grinding machines, in particular for angle grinders, and a matching mounting receptacle for them according to the type of the main claim.
- the permissible peripheral speed of the clamped grinding wheel must not be exceeded.
- the maximum permissible grinding wheel diameter depends on the nominal speed of the machine. Taking these into account, only grinding wheels up to a maximum permissible diameter should be clamped. In order to influence this, it is known that the grinding machines, which are smaller in terms of their performance, are smaller in terms of the cylindrical fastening shoulder than more powerful machines. As a result, only those protective hoods fit on the smaller fastening heel, the holding part of which is also correspondingly small.
- the protective hood according to the invention for grinding machines, in particular angle grinders, and matching mounting receptacle for these with the characterizing features of the main claim has the following advantages in comparison. It is created with simple means a coding between the grinding machine, namely its mounting kit, on the one hand, and protective hood, namely its holding part, on the other, which is constructed in this way. that smaller protective hoods but no larger than the maximum permitted can be installed.
- the neck diameter of the fastening shoulder is always the same size.
- FIG. 1 is a schematic perspective view of a manually operated angle grinder
- FIG. 2 is a bottom view of only the mounting receptacle of the angle grinder in FIG. 1, according to a first embodiment
- FIG. 3 is a partially sectioned side view of the mounting receptacle in Fig. 2,
- FIG. 4 shows a section and a top view of the protective hood of the grinding machine in FIG. 1 according to the first exemplary embodiment, suitable for the mounting receptacle
- Fig. 5 is a bottom view of a mounting receptacle, similar to that in Fig. 2, of a second exemplary embodiment.
- FIG. 7 shows a top view of a protective hood, similar to that in FIG. 5, suitable for the fastening receptacle in FIG. 6 according to the second exemplary embodiment
- FIG. 8 is a bottom view of part of a mounting receptacle, similar to that in Fig. 2, according to a third embodiment,
- FIG. 9 is a side view of the mounting receptacle in Fig. 8,
- FIG. 10 is a partially sectioned top view of the actuation receptacle in FIG. 3.
- FIG. 1 shows, as an example of a grinding machine, a hand-operated angle grinder 10, to the housing 11 of which a fastening receptacle 14 is screwed by screws 15 where the drive shaft 12 for the grinding wheel 13 emerges, which penetrate a flange 15 of the fastening receptacle 14.
- the flange 15 carries a cylindrical fastening shoulder 17, which is penetrated in the center by the drive shaft 12 and has an at least substantially smooth outer peripheral surface 13.
- the mounting receptacle 14 is e.g. from a cast silo.
- a protective hood 30 is fastened by means of a holding part 31 attached to it.
- the holding part 31 consists of a with the protective hood 30 z. 3.
- the body of the protective hood 30 extends over approximately 180 circumferential angles and is there. a protective cover of the grinding wheel 13.
- the protective hood 30 is pivoted on the cylindrical fastening paragraph 17 into the position which is the most favorable for the upcoming machining operation and the best protection by means of the protective hood 30 for the environment and in particular for the Operator offers.
- the permissible peripheral speed of the grinding wheel 13 must not be exceeded.
- the maximum permissible diameter of the grinding wheel 13, which is inserted into the angle grinder 10, is therefore dependent on the nominal speed of the angle grinder 10.
- the protective hood 30 is assigned to the nominal speed of the angle grinder 10 only grinding wheels 13 can be clamped up to the maximum permissible diameter.
- the holding part 31 of the protective hood 30 has at least one locking member 35 which projects in the radial direction in the first exemplary embodiment shown.
- the Spsrrgliad 35 projects instead in the axial direction.
- the fastening paragraph 17 has a corresponding assignment to an opening 19 into which the locking member 35 can engage when fastening the retaining part 31 on the fastening paragraph 17.
- the opening 19 is formed here as an axially directed insertion opening 20 that is open toward the free end of the fastening shoulder 17 and into which the associated locking member 35 engages when the holding part 31 of the protective part 30 is placed on it.
- the locking member 35 and the associated insertion opening 20 are in terms of their shape and
- Fastening paragraph 17 can fasten and. Accordingly can clamp larger grinding discs than are permitted according to the nominal speed of the angle grinder 10.
- angle grinders 10 If one considered a series of angle grinders 10 with differently large nominal numbers, these angle grinders each have the same large fastening heels 17, but vary with regard to the shape and / or size of the insertion opening 20. Corresponding assignment there are protective hoods 30 of different sizes for these angle grinders, whose holding part 31 is dimensioned the same size, so that it fits on the fastening paragraph 17, but different in shape and / or size-sized locking members 35.
- the locking members 35 of one size only fit into associated insertion openings 20 which are the same or larger than the respective locking member 35. In contrast, such a locking member 35 does not fit into the insertion opening 20, which is larger than that.
- the width b of the locking member 35 measured in the circumferential direction and the width a of the associated insertion opening 20 measured in the same direction vary correspondingly to different protective hood sizes. Accordingly, a wide locking member 35 is provided, for example, for a large protective hood size, a medium-wide locking member 35 for a medium protective hood size and a narrow locking member 35 for a small protective hood size.
- the fastening shoulder 17 has a wide insertion opening 20 for a large protective hood size with a wide locking member 35 , a medium-wide insertion opening 20 for a medium protective hood size with a medium-wide locking member 35 and a narrow insertion opening 20 for a small protective hood size with a narrow locking member 35.
- This ensures that, for. B. a protective cover of large size with a wide locking member cannot be fastened to an angle grinder, the fastening shoulder 17 of which has telbre ita or a narrow insertion opening 20, because such an angle grinder 10 has lower nominal speeds and the diameter of only smaller grinding wheels 13 can accordingly be soaked , than for andsrs angle grinders, for which the large protective hood size with wide locking member 35 is provided.
- the fastening shoulder 17 has an outer annular groove 21, which is normally provided in order to receive a locking lug, which is seated on the holding part 31 and is directed radially inward from there, as an axial securing means for the attached protective hood 30.
- this axial securing by means of the annular groove 21 and the locking lug on the holding part 31 is independent of the explained, inventive coding, achieved through the insertion opening 20 on one side and the locking member 35 on the other side.
- Locking member 35 associated opening 19 is formed and disnt.
- the axial insertion opening 20 leads to the annular groove 21, into which it opens.
- the locking member 35 can then engage axially into the insertion opening 20 by rotating the protective cover 30 with the holding part 31 approximately bayonet-like in the annular groove 21, as a result of which the described axial securing of the fastening is achieved.
- the axially directed insertion opening 20 is omitted.
- the fastening shoulder 17 is only equipped with the annular groove 21, which at the same time serves as an opening for the coding described.
- the protective hood 30 has, as shown in FIGS. 4 and 5, the radially projecting locking member 35, which at the same time can engage in the annular groove 21 for axial securing if, after the protective hood 30 has been attached, diodes are attached to the fastening shoulder 17, that the locking member 35 enters the annular groove 21 in the circumferential direction.
- 3ai diasam embodiment varies for coding for the named purpose in the axial direction measured thickness of the locking member 35 and the associated, axially measured width of the annular groove 21 corresponding to different protective hood sizes.
- a thick locking member 35 is provided for a large protective hood size, a medium-thick locking member 35 for a medium protective hood size and a thin locking member 35 for a small protective hood size.
- the fastening shoulder 17 then has a wide annular groove 21 for a large protective hood size with a thick locking member 35, a medium-sized ring 21 for a medium protective hood size with a medium-thick locking member 35 and for a small one Protect a size with a thin locking member 35 on a narrow annular groove 21.
- This embodiment has the advantage that always one and the same type of mounting receptacle 14 z. B. can be manufactured as a cast iron, the coding of which takes place later during processing, namely in that a correspondingly wide, medium-sized or narrow annular groove is inserted when the annular groove 21 is inserted.
- the radial overhang dimension of the locking member 35 and the groove depth of the annular groove 21 are used for coding.
- the holding part 131 of the protective hood 130 has a plurality of locking members 135 arranged at intervals from one another in the circumferential direction.
- the cylindrical fastening shoulder 117 provided on the machine side has a plurality of insertion openings 120 which merge into the annular groove 121.
- the insertion openings 120 are arranged at the same circumferential angular distances from one another as the blocking members 135. Their width measured in the circumferential direction is dimensioned like that of the blocking members 135.
- the coding can here be based on the number of blocking members 135 of the holding part 131. For example, as shown in FIG. 7, three locking members 135 are provided for its large protective hood size.
- the fastening shoulder 117 has three matching insertion openings 120 for a large protective hood size with three locking members 135, as shown in FIG. 5.
- the fastening shoulder 117 has only two matching insertion openings 120, and for a small protective hood size with a locking member 135, only one matching insertion opening 120.
- B. measure the same size.
- the cylindrical fastening shoulder 217 has an insert
- the insert 222 which contains the at least one axially directed insertion opening 120 and also an annular groove part 221a, which adjoins the remaining part of the annular groove 221.
- the insert 222 is in its axial receptacle
- the receptacle 223 and the insert 222 are of a dovetail shape in the axial section batrachtat, so that the insert 222, inserted axially into the receptacle 223, cannot escape radially inwards or outwards.
- the insert 222 is designed as a plastic tail.
- the shape and size of the receptacle 223 of the fastening heel 217 is the same for all the inserts 222.
- the inserts 222 vary insofar as they have insertion openings 220 of different widths in the circumferential direction, depending on the size of the machine, as described with reference to the first exemplary embodiment.
- the number and / or shape and / or size of the insertion opening 220 can be used for coding, the size being the. Dimensions in the radial direction and / or axial direction and / or circumferential direction are to be subsumed.
- the third exemplary embodiment has the advantage that, for different sizes and types of grinding machines, only one casting can be used for the mounting fixtures, and also in its final processing. It is only during the final assembly, for example on the assembly line, that the fastening shoulder 217 takes place in the desired dimension by inserting the respectively assigned insert 222 and coding. In customer service, too, only a single part is required for the mounting receptacle, each with associated inserts 222.
- the respective inserts 222 can additionally by different colors must be identified and bear the assigned diameter information so that the correct protective hood assignment can be seen at a glance.
- the fastening shoulder 17, 117, 217 regardless of the size of the machine, always has the same diameter.
- all protective hoods already in operation, the holding part 31, 131 of which is still without a locking member fit on such fastening heels.
- the user has the option of not only using the appropriate protective hood size, but also at any time, e.g. B. for reasons of manageability, to install smaller protective hoods.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
Capot protecteur (30) pour disques abrasifs, avec logement de fixation (14) adapté comportant un épaulement (17) cylindrique de fixation de la partie support (31) du capot (30). Cette partie support (31) présente au moins un élément de blocage (35) saillant auquel correspond, dans l'épaulement de fixation (17), une ouverture (19, 20) dimensionnée en conséquence et dans laquelle peut s'engager l'élément de blocage (35) lors de la fixation de la partie support (31). La forme et/ou la disposition et/ou le nombre et/ou la dimension de l'élément de blocage (35) et de l'ouverture (19, 20) sont choisis en fonction de la dimension du capot, déterminée par la vitesse de rotation nominale de la ponceuse, et varient selon les différentes dimensions de capot.Protective cover (30) for abrasive discs, with suitable fixing housing (14) comprising a cylindrical shoulder (17) for fixing the support part (31) of the cover (30). This support part (31) has at least one projecting blocking element (35) to which corresponds, in the fixing shoulder (17), an opening (19, 20) dimensioned accordingly and in which the element can engage. blocking (35) when fixing the support part (31). The shape and/or arrangement and/or number and/or size of the blocking element (35) and the opening (19, 20) are chosen according to the dimension of the cover, determined by the speed nominal rotation of the sander, and vary according to the different cover dimensions.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863636601 DE3636601A1 (en) | 1986-10-28 | 1986-10-28 | PROTECTIVE COVER FOR GRINDING MACHINES, ESPECIALLY ANGLE GRINDERS, AND THE FASTENING MOUNTING THAT MATCH THEM |
DE3636601 | 1986-10-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0333710A1 true EP0333710A1 (en) | 1989-09-27 |
EP0333710B1 EP0333710B1 (en) | 1992-07-29 |
Family
ID=6312615
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87905603A Expired - Lifetime EP0333710B1 (en) | 1986-10-28 | 1987-09-05 | Fixing recess for a protective cover for portable grinders |
Country Status (6)
Country | Link |
---|---|
US (1) | US5005321A (en) |
EP (1) | EP0333710B1 (en) |
JP (1) | JP2635640B2 (en) |
DE (2) | DE3636601A1 (en) |
ES (1) | ES2005658A6 (en) |
WO (1) | WO1988003077A1 (en) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3943134B4 (en) * | 1989-12-28 | 2005-06-09 | Robert Bosch Gmbh | Clamping device for a sliding part on a guide |
DE4113641A1 (en) * | 1991-04-26 | 1992-10-29 | Bosch Gmbh Robert | HAND MACHINE TOOL |
DE4120337A1 (en) * | 1991-06-20 | 1992-12-24 | Wabco Westinghouse Fahrzeug | TWO-CIRCUIT POWER SUPPLY CIRCUIT FOR VEHICLES |
DE4239367A1 (en) * | 1992-11-24 | 1994-05-26 | Bosch Gmbh Robert | Hand-held power tool, especially an angle grinder |
US5411433A (en) * | 1994-06-13 | 1995-05-02 | Dynabrade, Inc. | Dust-collecting apparatus |
US5637035A (en) * | 1995-06-28 | 1997-06-10 | Milwaukee Electric Tool Corporation | Adjustable guard arrangement for power tool |
DE19834839C2 (en) * | 1998-08-01 | 2002-04-11 | C & E Fein Gmbh & Co Kg | Grinder with a removable protective hood |
US6071184A (en) * | 1998-09-02 | 2000-06-06 | Seh America, Inc. | Fluid deflecting device for use in work piece holder during a semiconductor wafer grinding process |
US6048260A (en) * | 1999-07-01 | 2000-04-11 | Roto-Zip Tool Corporation | Angle attachment for power tool |
US6561887B2 (en) * | 2000-02-17 | 2003-05-13 | Bao Shyan Lai | Protective cover detachably installed on a cutting machine/engraving machine combination |
US6464573B1 (en) * | 2000-06-30 | 2002-10-15 | Porter-Cable Corporation | Guard attachment system with knurled clamp ring |
DE10124439A1 (en) * | 2001-05-18 | 2002-11-21 | Bosch Gmbh Robert | Protective hood of an electric angle grinder has an expanding clamp band held around a shaped housing collar about which it may be turned and clamped |
DE10162632A1 (en) * | 2001-12-20 | 2003-07-03 | Hilti Ag | Grinder with suction hood |
US6699114B1 (en) * | 2002-04-26 | 2004-03-02 | Benedict Engineering Company, Inc. | Pivotal guards for power hand tools with rotating discs |
US6886258B2 (en) * | 2002-11-15 | 2005-05-03 | Richard C. Swanson | Hand-held rotary hedge trimmer |
DE10259520A1 (en) * | 2002-12-19 | 2004-07-01 | Robert Bosch Gmbh | Electric hand tool |
CA2673618C (en) * | 2003-03-03 | 2012-10-02 | Credo Technology Corporation | Angle attachment for power tool |
DE10316182A1 (en) * | 2003-04-09 | 2004-10-28 | Robert Bosch Gmbh | Hand grinder with protective hood |
DE10343060A1 (en) * | 2003-09-16 | 2005-04-07 | Robert Bosch Gmbh | Protective cowl for hand power tool especially for angle grinder has an adjustable fitting with a finger pressure ratchet lever engaging ratchet holes in cowl mounting |
DE10348395A1 (en) * | 2003-10-17 | 2005-05-19 | Robert Bosch Gmbh | Protective cover for a power tool, power tool and system with protective hood and power tool |
TWM251717U (en) * | 2004-01-20 | 2004-12-01 | Yue-Ting Chen | Adjusting structure for hand-held cutter |
US20070117499A1 (en) * | 2005-11-23 | 2007-05-24 | Sunmatch Industrial Co., Ltd. | Rotary protecting hood of a pneumatic grinder |
DE102005062458A1 (en) * | 2005-12-27 | 2007-07-05 | Robert Bosch Gmbh | Protective cap for handtool has rotational tool with axial side to cover the rotational tool and with side areas lying next to each other and offset axially inter-connected as a piece; handtool with such cap |
DE102006022386A1 (en) | 2006-05-12 | 2007-11-15 | Robert Bosch Gmbh | Protective hood for a hand tool and hand tool with protective hood |
ATE457849T1 (en) * | 2006-10-07 | 2010-03-15 | Metabowerke Gmbh | HAND-HELD ELECTRIC TOOL, PARTICULARLY AN ANGLE GRINDER WITH A PROTECTIVE HOOD |
DE102006053301A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Hand tool for a rotating tool with protective cover |
DE102006053305A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Hand tool with protective hood, in particular angle grinder |
DE102007041840A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Hand tool with protective hood, in particular angle grinder |
DE102006053303A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Hand tool for a rotating tool with protective cover |
DE102007000845A1 (en) * | 2007-10-11 | 2009-04-16 | Hilti Aktiengesellschaft | Manually operated machine for operating separating or grinding tool, has housing, drive screw for separating or grinding tool, and clamping lever mechanism that is provided with retaining spring element |
JP5259614B2 (en) * | 2007-10-22 | 2013-08-07 | 株式会社マキタ | Stopper device for grindstone cover in grinder |
DE102007052684A1 (en) * | 2007-11-05 | 2009-05-07 | Robert Bosch Gmbh | Hand tool |
DE102007057032A1 (en) * | 2007-11-27 | 2009-05-28 | Robert Bosch Gmbh | Hand tool |
DE102008040372A1 (en) * | 2008-07-11 | 2010-01-21 | Robert Bosch Gmbh | Guard anti |
DE102010030598A1 (en) * | 2010-06-28 | 2011-12-29 | Robert Bosch Gmbh | Hand tool protection device |
JP5587079B2 (en) * | 2010-07-22 | 2014-09-10 | 株式会社マキタ | Movable cover mounting structure and cutting machine |
JP5579575B2 (en) * | 2010-11-02 | 2014-08-27 | 株式会社マキタ | Disc grinder |
US9120202B2 (en) * | 2011-06-30 | 2015-09-01 | Black & Decker Inc. | Shield assembly for a power tool |
DE102011089758A1 (en) * | 2011-12-23 | 2013-06-27 | Robert Bosch Gmbh | Guard anti |
DE102012210767A1 (en) * | 2012-06-25 | 2014-01-02 | Robert Bosch Gmbh | Guard device |
DE102012210759A1 (en) * | 2012-06-25 | 2014-01-02 | Robert Bosch Gmbh | Guard device |
EP3040159A4 (en) * | 2013-08-27 | 2017-07-19 | Hitachi Koki Co., Ltd. | Grinder |
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 |
DE102020210634A1 (en) | 2020-08-20 | 2022-02-24 | Robert Bosch Gesellschaft mit beschränkter Haftung | ªHand tool machine |
CN117381050B (en) * | 2023-11-27 | 2024-09-06 | 深圳市晨东智能家居有限公司 | Hardware fitting handheld cutting device based on scrap diversion and use method thereof |
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Publication number | Priority date | Publication date | Assignee | Title |
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US3273023A (en) * | 1964-09-25 | 1966-09-13 | Monarch Machine Tool Co | Selector circuit |
US3401416A (en) * | 1966-11-15 | 1968-09-17 | Hoover Co | Floor polisher brush attaching and drive means |
US3397419A (en) * | 1966-11-18 | 1968-08-20 | Cello Chemical Company | Tool for floor treating machine |
DE2106023A1 (en) * | 1971-02-09 | 1972-08-24 | Gildemeister Werkzeugmasch | Tool or tool holder for machines with automatic tool changing device |
IT1040243B (en) * | 1975-07-30 | 1979-12-20 | Star Utensili Elett | PROTECTION CASE FOR PORTABLE CORNER TOOLS |
DE3338917A1 (en) * | 1983-10-27 | 1985-05-09 | C. & E. Fein Gmbh & Co, 7000 Stuttgart | PROTECTIVE HOOD FASTENING FOR PORTABLE ANGLE GRINDERS |
-
1986
- 1986-10-28 DE DE19863636601 patent/DE3636601A1/en not_active Withdrawn
-
1987
- 1987-09-05 US US07/347,808 patent/US5005321A/en not_active Expired - Lifetime
- 1987-09-05 EP EP87905603A patent/EP0333710B1/en not_active Expired - Lifetime
- 1987-09-05 JP JP62505132A patent/JP2635640B2/en not_active Expired - Lifetime
- 1987-09-05 WO PCT/DE1987/000407 patent/WO1988003077A1/en active IP Right Grant
- 1987-09-05 DE DE8787905603T patent/DE3780828D1/en not_active Expired - Lifetime
- 1987-10-27 ES ES8703064A patent/ES2005658A6/en not_active Expired
Non-Patent Citations (1)
Title |
---|
See references of WO8803077A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2005658A6 (en) | 1989-03-16 |
DE3780828D1 (en) | 1992-09-03 |
JP2635640B2 (en) | 1997-07-30 |
EP0333710B1 (en) | 1992-07-29 |
JPH02500503A (en) | 1990-02-22 |
DE3636601A1 (en) | 1988-05-05 |
WO1988003077A1 (en) | 1988-05-05 |
US5005321A (en) | 1991-04-09 |
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