IN166369B - - Google Patents
Info
- Publication number
- IN166369B IN166369B IN150/CAL/86A IN150CA1986A IN166369B IN 166369 B IN166369 B IN 166369B IN 150CA1986 A IN150CA1986 A IN 150CA1986A IN 166369 B IN166369 B IN 166369B
- Authority
- IN
- India
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
- B22D19/0027—Cylinders, pistons pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0603—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
- F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
- F02B23/0696—W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/26—Pistons having combustion chamber in piston head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/028—Magnesium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/16—Fibres
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12458—All metal or with adjacent metals having composition, density, or hardness gradient
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12486—Laterally noncoextensive components [e.g., embedded, etc.]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/719,938 US4587177A (en) | 1985-04-04 | 1985-04-04 | Cast metal composite article |
Publications (1)
Publication Number | Publication Date |
---|---|
IN166369B true IN166369B (de) | 1990-04-21 |
Family
ID=24892004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN150/CAL/86A IN166369B (de) | 1985-04-04 | 1986-02-28 |
Country Status (10)
Country | Link |
---|---|
US (1) | US4587177A (de) |
JP (2) | JPS61235058A (de) |
AU (1) | AU581734B2 (de) |
BR (1) | BR8601512A (de) |
CA (1) | CA1251010A (de) |
DE (1) | DE3610856C3 (de) |
GB (1) | GB2173134B (de) |
IN (1) | IN166369B (de) |
IT (1) | IT1208743B (de) |
MX (1) | MX166963B (de) |
Families Citing this family (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61166934A (ja) * | 1985-01-17 | 1986-07-28 | Toyota Motor Corp | 複合材料製造用短繊維成形体及びその製造方法 |
JPS62156938A (ja) * | 1985-12-28 | 1987-07-11 | 航空宇宙技術研究所 | 傾斜機能材料の製造方法 |
JPS6342859A (ja) * | 1986-08-08 | 1988-02-24 | 航空宇宙技術研究所長 | 傾斜機能材料の製造方法 |
EP0280830A1 (de) * | 1987-03-02 | 1988-09-07 | Battelle Memorial Institute | Verfahren zur Herstellung von faser- oder teilchenverstärkten, gegossenen Metallverbundwerkstoffen oder Metallegierungsverbundwerkstoffen |
US4828008A (en) * | 1987-05-13 | 1989-05-09 | Lanxide Technology Company, Lp | Metal matrix composites |
US5141819A (en) * | 1988-01-07 | 1992-08-25 | Lanxide Technology Company, Lp | Metal matrix composite with a barrier |
US5277989A (en) * | 1988-01-07 | 1994-01-11 | Lanxide Technology Company, Lp | Metal matrix composite which utilizes a barrier |
US4935055A (en) * | 1988-01-07 | 1990-06-19 | Lanxide Technology Company, Lp | Method of making metal matrix composite with the use of a barrier |
US5298339A (en) * | 1988-03-15 | 1994-03-29 | Lanxide Technology Company, Lp | Aluminum metal matrix composites |
US4908923A (en) * | 1988-10-05 | 1990-03-20 | Ford Motor Company | Method of dimensionally stabilizing interface between dissimilar metals in an internal combustion engine |
US5238045A (en) * | 1988-11-10 | 1993-08-24 | Lanxide Technology Company, Lp | Method of surface bonding materials together by use of a metal matrix composite, and products produced thereby |
US5197528A (en) * | 1988-11-10 | 1993-03-30 | Lanxide Technology Company, Lp | Investment casting technique for the formation of metal matrix composite bodies and products produced thereby |
US5040588A (en) * | 1988-11-10 | 1991-08-20 | Lanxide Technology Company, Lp | Methods for forming macrocomposite bodies and macrocomposite bodies produced thereby |
US5150747A (en) * | 1988-11-10 | 1992-09-29 | Lanxide Technology Company, Lp | Method of forming metal matrix composites by use of an immersion casting technique and product produced thereby |
US5172747A (en) * | 1988-11-10 | 1992-12-22 | Lanxide Technology Company, Lp | Method of forming a metal matrix composite body by a spontaneous infiltration technique |
US5016703A (en) * | 1988-11-10 | 1991-05-21 | Lanxide Technology Company, Lp | Method of forming a metal matrix composite body by a spontaneous infiltration technique |
US5000245A (en) * | 1988-11-10 | 1991-03-19 | Lanxide Technology Company, Lp | Inverse shape replication method for forming metal matrix composite bodies and products produced therefrom |
US5526867A (en) * | 1988-11-10 | 1996-06-18 | Lanxide Technology Company, Lp | Methods of forming electronic packages |
US5020584A (en) * | 1988-11-10 | 1991-06-04 | Lanxide Technology Company, Lp | Method for forming metal matrix composites having variable filler loadings and products produced thereby |
US5000247A (en) * | 1988-11-10 | 1991-03-19 | Lanxide Technology Company, Lp | Method for forming metal matrix composite bodies with a dispersion casting technique and products produced thereby |
US5000246A (en) * | 1988-11-10 | 1991-03-19 | Lanxide Technology Company, Lp | Flotation process for the formation of metal matrix composite bodies |
US5004035A (en) * | 1988-11-10 | 1991-04-02 | Lanxide Technology Company, Lp | Method of thermo-forming a novel metal matrix composite body and products produced therefrom |
US5004036A (en) * | 1988-11-10 | 1991-04-02 | Lanxide Technology Company, Lp | Method for making metal matrix composites by the use of a negative alloy mold and products produced thereby |
US5000248A (en) * | 1988-11-10 | 1991-03-19 | Lanxide Technology Company, Lp | Method of modifying the properties of a metal matrix composite body |
US5010945A (en) * | 1988-11-10 | 1991-04-30 | Lanxide Technology Company, Lp | Investment casting technique for the formation of metal matrix composite bodies and products produced thereby |
US5007474A (en) * | 1988-11-10 | 1991-04-16 | Lanxide Technology Company, Lp | Method of providing a gating means, and products produced thereby |
US5222542A (en) * | 1988-11-10 | 1993-06-29 | Lanxide Technology Company, Lp | Method for forming metal matrix composite bodies with a dispersion casting technique |
US5004034A (en) * | 1988-11-10 | 1991-04-02 | Lanxide Technology Company, Lp | Method of surface bonding materials together by use of a metal matrix composite, and products produced thereby |
US5163499A (en) * | 1988-11-10 | 1992-11-17 | Lanxide Technology Company, Lp | Method of forming electronic packages |
US5000249A (en) * | 1988-11-10 | 1991-03-19 | Lanxide Technology Company, Lp | Method of forming metal matrix composites by use of an immersion casting technique and product produced thereby |
US5007475A (en) * | 1988-11-10 | 1991-04-16 | Lanxide Technology Company, Lp | Method for forming metal matrix composite bodies containing three-dimensionally interconnected co-matrices and products produced thereby |
US5007476A (en) * | 1988-11-10 | 1991-04-16 | Lanxide Technology Company, Lp | Method of forming metal matrix composite bodies by utilizing a crushed polycrystalline oxidation reaction product as a filler, and products produced thereby |
US5020583A (en) * | 1988-11-10 | 1991-06-04 | Lanxide Technology Company, Lp | Directional solidification of metal matrix composites |
US5005631A (en) * | 1988-11-10 | 1991-04-09 | Lanxide Technology Company, Lp | Method for forming a metal matrix composite body by an outside-in spontaneous infiltration process, and products produced thereby |
DE3917487A1 (de) * | 1989-05-30 | 1990-12-06 | Frech Oskar Gmbh & Co | Giessbehaelter fuer warmkammer-druckgiessmaschinen |
JPH0645830B2 (ja) * | 1989-06-12 | 1994-06-15 | イズミ工業株式会社 | アルミニウム合金複合部材の生産方法 |
US5851686A (en) * | 1990-05-09 | 1998-12-22 | Lanxide Technology Company, L.P. | Gating mean for metal matrix composite manufacture |
JPH05507317A (ja) * | 1990-05-09 | 1993-10-21 | ランキサイド テクノロジー カンパニー,リミティド パートナーシップ | マクロ複合体及び製法 |
US5361824A (en) * | 1990-05-10 | 1994-11-08 | Lanxide Technology Company, Lp | Method for making internal shapes in a metal matrix composite body |
DE4117886A1 (de) * | 1990-06-04 | 1991-12-19 | Tokai Carbon Kk | Verfahren zur herstellung eines teilverstaerkten metallmaterials auf aluminiumbasis |
US5240672A (en) * | 1991-04-29 | 1993-08-31 | Lanxide Technology Company, Lp | Method for making graded composite bodies produced thereby |
WO1993024672A1 (en) * | 1992-05-29 | 1993-12-09 | United Technologies Corporation | Ceramic thermal barrier coating for rapid thermal cycling applications |
US5305726A (en) * | 1992-09-30 | 1994-04-26 | United Technologies Corporation | Ceramic composite coating material |
US5514480A (en) * | 1993-08-06 | 1996-05-07 | Aisin Seiki Kabushiki Kaisha | Metal-based composite |
JPH09151786A (ja) * | 1995-11-30 | 1997-06-10 | Aisin Seiki Co Ltd | 内燃機関用ピストンの製造方法 |
US6202618B1 (en) * | 1999-09-23 | 2001-03-20 | General Motors Corporation | Piston with tailored mechanical properties |
DE10340291A1 (de) * | 2003-09-02 | 2005-04-14 | Mahle Gmbh | Kolben für einen Verbrennungsmotor |
DE102004056519B4 (de) * | 2004-11-24 | 2017-07-13 | Mahle Gmbh | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor |
DE102004057558A1 (de) * | 2004-11-30 | 2006-06-01 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
EP1931809A2 (de) * | 2005-09-07 | 2008-06-18 | M Cubd Technologies, Inc. | Metall-matrix-verbundwerkstoffkörper und herstellungsverfahren dafür |
FR2925896B1 (fr) * | 2007-12-28 | 2010-02-05 | Messier Dowty Sa | Procede de fabrication d'une piece metallique renforcee de fibres ceramiques |
DE102008031863A1 (de) * | 2008-07-05 | 2010-01-07 | Mahle International Gmbh | Einlegeteil für einen Kolben eines Verbrennungsmotors sowie mit dem Einlegeteil versehener Kolben oder Kolbenkopf |
DE102012204947A1 (de) * | 2012-03-28 | 2013-10-02 | Mahle International Gmbh | Verfahren zur Herstellung eines Aluminiumkolbens |
DE102012009029A1 (de) * | 2012-05-05 | 2013-11-07 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
GB201223198D0 (en) * | 2012-12-21 | 2013-02-06 | Jaguar Cars | Sleeve member and method of casting |
JP6638406B2 (ja) * | 2016-01-12 | 2020-01-29 | いすゞ自動車株式会社 | 内燃機関用ピストンおよび内燃機関用ピストンの製造方法 |
EP3440331B1 (de) * | 2016-04-05 | 2020-10-28 | Federal-Mogul Powertrain LLC | Kolben mit wärmedämmendem einsatz und verfahren zur konstruktion davon |
FR3063122A1 (fr) * | 2017-02-21 | 2018-08-24 | Peugeot Citroen Automobiles Sa | Dispositif de transmission de mouvement pour moteur thermique |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB159280A (en) * | 1919-11-19 | 1921-02-21 | William Bowman Ballantine | Improvements in or relating to the production of ferro-chrome alloys |
GB1289823A (de) * | 1968-09-24 | 1972-09-20 | ||
CA953128A (en) * | 1971-01-06 | 1974-08-20 | British Railways Board | Methods of producing a metal and carbon fibre composite |
CA1055733A (en) * | 1974-11-11 | 1979-06-05 | Paul G. Riewald | Reinforced aluminum alloy composite |
JPS5260222A (en) * | 1975-09-30 | 1977-05-18 | Honda Motor Co Ltd | Method of manufacturing fibre reinforced composite |
JPS5292827A (en) * | 1976-01-16 | 1977-08-04 | Honda Motor Co Ltd | Method of manufacturing structures with fiber reinforced composite parts |
US4075364A (en) * | 1976-04-15 | 1978-02-21 | Brunswick Corporation | Porous ceramic seals and method of making same |
US4216682A (en) * | 1977-08-23 | 1980-08-12 | Honda Giken Kogyo Kabushiki Kaisha | Fiber-reinforced light alloy cast article |
JPS5550447A (en) * | 1978-10-05 | 1980-04-12 | Honda Motor Co Ltd | Manufacture of fiber-reinforced magnesium alloy member |
JPS5621505A (en) * | 1979-07-30 | 1981-02-28 | Toyo Noki Kk | Supervising device of vacuum seeder |
JPS5630070A (en) * | 1979-08-17 | 1981-03-26 | Honda Motor Co Ltd | Manufacture of fiber-reinforced composite material |
US4312398A (en) * | 1979-09-28 | 1982-01-26 | The Boeing Company | Method of forming fiber and metal composite structures |
US4465741A (en) * | 1980-07-31 | 1984-08-14 | Sumitomo Chemical Company, Limited | Fiber-reinforced metal composite material |
US4404262A (en) * | 1981-08-03 | 1983-09-13 | International Harvester Co. | Composite metallic and refractory article and method of manufacturing the article |
GB2106433B (en) * | 1981-09-22 | 1985-11-06 | Ae Plc | Squeeze casting of pistons |
JPS5852451A (ja) * | 1981-09-24 | 1983-03-28 | Toyota Motor Corp | 耐熱・断熱性軽合金部材およびその製造方法 |
JPS5893948A (ja) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | エンジン用ピストン |
GB2115327B (en) * | 1982-02-08 | 1985-10-09 | Secr Defence | Casting fibre reinforced metals |
JPS5950149A (ja) * | 1982-09-14 | 1984-03-23 | Toyota Motor Corp | 繊維強化金属複合材料 |
DE3241141C2 (de) * | 1982-11-08 | 1987-01-29 | Honda Giken Kogyo K.K., Tokio/Tokyo | Pleuelstange für eine Brennkraftmaschine |
DE3248373C2 (de) * | 1982-12-28 | 1985-03-21 | Honda Giken Kogyo K.K., Tokio/Tokyo | Pleuelstange |
GB8328576D0 (en) * | 1983-10-26 | 1983-11-30 | Ae Plc | Reinforcement of pistons for ic engines |
DE3430056C1 (de) * | 1984-08-16 | 1986-01-16 | Mahle Gmbh, 7000 Stuttgart | Tauchkolben mit faserverstaerkter Brennraummulde fuer Verbrennungsmotoren |
-
1985
- 1985-04-04 US US06/719,938 patent/US4587177A/en not_active Expired - Lifetime
-
1986
- 1986-02-28 IN IN150/CAL/86A patent/IN166369B/en unknown
- 1986-02-28 AU AU54195/86A patent/AU581734B2/en not_active Ceased
- 1986-03-07 GB GB08605730A patent/GB2173134B/en not_active Expired
- 1986-03-17 CA CA000504220A patent/CA1251010A/en not_active Expired
- 1986-03-27 IT IT8647834A patent/IT1208743B/it active
- 1986-04-01 DE DE3610856A patent/DE3610856C3/de not_active Expired - Fee Related
- 1986-04-02 MX MX002055A patent/MX166963B/es unknown
- 1986-04-02 JP JP61074388A patent/JPS61235058A/ja active Pending
- 1986-04-03 BR BR8601512A patent/BR8601512A/pt unknown
-
1996
- 1996-11-13 JP JP8301981A patent/JP2866064B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
MX166963B (es) | 1993-02-16 |
IT8647834A0 (it) | 1986-03-27 |
IT1208743B (it) | 1989-07-10 |
DE3610856C2 (de) | 1995-08-31 |
DE3610856C3 (de) | 1998-09-17 |
DE3610856A1 (de) | 1986-10-09 |
GB8605730D0 (en) | 1986-04-16 |
JPH09177604A (ja) | 1997-07-11 |
CA1251010A (en) | 1989-03-14 |
AU5419586A (en) | 1986-10-09 |
US4587177A (en) | 1986-05-06 |
BR8601512A (pt) | 1986-12-09 |
JPS61235058A (ja) | 1986-10-20 |
JP2866064B2 (ja) | 1999-03-08 |
GB2173134A (en) | 1986-10-08 |
AU581734B2 (en) | 1989-03-02 |
GB2173134B (en) | 1988-07-20 |