IN169436B - - Google Patents
Info
- Publication number
- IN169436B IN169436B IN257/CAL/87A IN257CA1987A IN169436B IN 169436 B IN169436 B IN 169436B IN 257CA1987 A IN257CA1987 A IN 257CA1987A IN 169436 B IN169436 B IN 169436B
- Authority
- IN
- India
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle
- B60K28/16—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle responsive to, or preventing, skidding of wheels
- B60K28/165—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle responsive to, or preventing, skidding of wheels acting on elements of the vehicle drive train other than the propulsion unit and brakes, e.g. transmission, clutch, differential
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
- B60T8/3215—Systems characterised by having means acting on components of the drive line, e.g. retarder, clutch or differential gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0604—Throttle position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/26—Wheel slip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/02—Clutches
- B60W2710/021—Clutch engagement state
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/10—Change speed gearings
- B60W2710/1005—Transmission ratio engaged
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H2059/506—Wheel slip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Regulating Braking Force (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Control Of Fluid Gearings (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/848,610 US4899279A (en) | 1986-04-07 | 1986-04-07 | Method for controlling AMT system including wheel lock-up detection and tolerance |
Publications (1)
Publication Number | Publication Date |
---|---|
IN169436B true IN169436B (fi) | 1991-10-19 |
Family
ID=25303782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN257/CAL/87A IN169436B (fi) | 1986-04-07 | 1987-03-31 |
Country Status (11)
Country | Link |
---|---|
US (1) | US4899279A (fi) |
EP (1) | EP0241215B1 (fi) |
JP (1) | JPH0811511B2 (fi) |
KR (1) | KR920004068B1 (fi) |
CN (1) | CN1009350B (fi) |
BR (1) | BR8702085A (fi) |
CA (1) | CA1276706C (fi) |
DE (1) | DE3764141D1 (fi) |
ES (1) | ES2016623B3 (fi) |
IN (1) | IN169436B (fi) |
MX (1) | MX171636B (fi) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0242255A (ja) * | 1988-07-30 | 1990-02-13 | Fuji Heavy Ind Ltd | 自動変速機付自動車の変速制御装置 |
US5085104A (en) * | 1989-04-12 | 1992-02-04 | Toyota Jidosha Kabushiki Kaisha | Hydraulic control apparatus for vehicle power transmitting system |
DE4003866A1 (de) * | 1990-02-09 | 1991-08-14 | Man Nutzfahrzeuge Ag | Steuerung fuer die kupplung eines getriebes in einem kraftfahrzeug |
US5317937A (en) * | 1991-09-14 | 1994-06-07 | Honda Giken Kogyo Kabushiki Kaisha | Control system for vehicle automatic transmission |
GB9415861D0 (en) | 1994-08-05 | 1994-09-28 | Eaton Corp | Start gear ratio selection system and method |
GB9415965D0 (en) | 1994-08-06 | 1994-09-28 | Eaton Corp | Continuous selection control for semi-automatic mechanical transmission |
GB9416840D0 (en) | 1994-08-19 | 1994-10-12 | Eaton Corp | Downshift logic for semi-automatic mechanical transmission with manual clutch controller |
GB9525055D0 (en) | 1995-12-07 | 1996-02-07 | Eaton Corp | Controled for automated mechanical transmission system |
US5875410A (en) | 1996-01-12 | 1999-02-23 | Eaton Corporation | Dynamic best gear selection for automated transmission system |
EP0833084B1 (en) * | 1996-09-25 | 2003-11-26 | Honda Giken Kogyo Kabushiki Kaisha | Control apparatus for hydraulically operated vehicular transmission |
GB9721823D0 (en) | 1997-10-16 | 1997-12-17 | Eaton Corp | Shift into optimal engine braking control system and method |
AU6259200A (en) * | 1999-06-08 | 2000-12-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Method for representing the speed of a wheel in motor vehicles |
WO2001032461A1 (fr) * | 1999-10-29 | 2001-05-10 | Toyota Jidosha Kabushiki Kaisha | Dispositif de commande pour le systeme d'entrainement d'un vehicule |
US6658339B1 (en) | 1999-11-26 | 2003-12-02 | Eaton Corporation | Driver-programmable driving mode system for automatic transmissions |
EP1125783B1 (en) | 2000-02-19 | 2003-07-02 | Robert Bosch Gmbh | Method for controlling an automatic transmission |
JP4078789B2 (ja) * | 2000-04-21 | 2008-04-23 | アイシン・エィ・ダブリュ株式会社 | 自動変速機におけるロックアップ制御装置 |
DE10157711C1 (de) * | 2001-11-24 | 2003-02-27 | Daimler Chrysler Ag | Verfahren und Vorrichtung zum Betrieb eines automatisierten Zahnräderwechselgetriebes |
DE10327438B4 (de) * | 2002-06-21 | 2020-04-02 | Schaeffler Technologies AG & Co. KG | Verfahren zum Steuern und/oder Regeln einer Kupplung |
FR2842147A1 (fr) * | 2002-07-15 | 2004-01-16 | Conception & Dev Michelin Sa | Chaine de traction comportant un mecanisme de changement de rapport integre dans une roue |
JP3582521B2 (ja) | 2002-08-13 | 2004-10-27 | 日産自動車株式会社 | 4輪駆動車両の駆動力制御装置 |
JP2004144221A (ja) * | 2002-10-25 | 2004-05-20 | Advics:Kk | 自動クラッチ制御装置 |
JP4010925B2 (ja) | 2002-11-05 | 2007-11-21 | 株式会社アドヴィックス | 自動クラッチ制御装置 |
DE10316945A1 (de) * | 2003-04-12 | 2004-10-21 | Daimlerchrysler Ag | Vorrichtung und Verfahren zur Stabilisierung eines Fahrzeuges |
US7415335B2 (en) * | 2003-11-21 | 2008-08-19 | Harris Corporation | Mobile data collection and processing system and methods |
US7139653B2 (en) * | 2004-07-15 | 2006-11-21 | International Truck Intellectual Property Company, Llc | Common control interface for diverse automated manual transmissions |
JP4881384B2 (ja) * | 2005-09-08 | 2012-02-22 | ボルボ ラストバグナー アーベー | 選択的アンチロック制動システム |
US20070105691A1 (en) * | 2005-11-07 | 2007-05-10 | Sayman Robert A | Simulated throttle kickdown in automated mechanical transmission |
DE102005039930A1 (de) * | 2005-11-12 | 2007-06-21 | Zf Friedrichshafen Ag | Verfahren zum Ansteuern des mechanischen Antriebsstrangsystems eines Kraftfahrzeuges |
US7628260B2 (en) * | 2006-07-28 | 2009-12-08 | Honda Motor Co., Ltd. | Control system and method for lock up clutch |
DE102012222079A1 (de) * | 2012-12-03 | 2014-06-05 | Robert Bosch Gmbh | Antiblockier-Bremsanordnung für ein Fahrzeug, Fahrzeug sowie Verfahren zum Abbremsen eines Fahrzeugs |
JP5920273B2 (ja) * | 2013-03-29 | 2016-05-18 | トヨタ自動車株式会社 | 車両用無段変速機の変速制御装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA727388B (en) * | 1971-10-20 | 1973-06-27 | Kelsey Hayes Co | Skid control system with clutch disengaging means |
US4361060A (en) * | 1978-01-24 | 1982-11-30 | Smyth Robert Ralston | Mechanical automatic transmission |
JPS56149223A (en) * | 1980-04-18 | 1981-11-19 | Nippon Air Brake Co Ltd | Automatic intermittent action device for clutch of vehicle and the like |
US4451889A (en) * | 1980-10-20 | 1984-05-29 | Knorr-Bremse Gmbh | Anti-lock device for regulating the brake pressure of vehicle brakes |
SE420294B (sv) * | 1980-11-28 | 1981-09-28 | Saab Scania Ab | Forfarande for att forhindra felaktigt vexelval vid ett automatiskt vexelvalsystem i fordon |
SE420296B (sv) * | 1980-11-28 | 1981-09-28 | Saab Scania Ab | Forfarande for att forhindra felaktigt vexelval vid en fordonstransmission |
DE3119144C2 (de) * | 1981-05-14 | 1985-01-17 | FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt | Blockiergeschützte hydraulische Fahrzeug-Bremsanlage |
DE3119153A1 (de) * | 1981-05-14 | 1982-12-02 | Robert Bosch Gmbh, 7000 Stuttgart | Anordnung zum ermitteln des haftbeiwertes einer fahrbahn |
DE3236534A1 (de) * | 1982-10-02 | 1984-04-05 | Robert Bosch Gmbh, 7000 Stuttgart | Antiblockierregelsystem |
DE3426215A1 (de) * | 1984-07-17 | 1986-02-13 | J.M. Voith Gmbh, 7920 Heidenheim | Antrieb, insbesondere fuer linienomnibusse |
DE3430983A1 (de) * | 1984-08-23 | 1986-03-06 | Alfred Teves Gmbh, 6000 Frankfurt | Schaltungsanordnung zur steuerung des ein- und ausrueckens einer kupplung |
US4673226A (en) * | 1985-02-19 | 1987-06-16 | Kelsey-Hayes Company | Vehicle skid control system |
-
1986
- 1986-04-07 US US06/848,610 patent/US4899279A/en not_active Expired - Lifetime
-
1987
- 1987-03-19 CA CA000532496A patent/CA1276706C/en not_active Expired - Lifetime
- 1987-03-31 IN IN257/CAL/87A patent/IN169436B/en unknown
- 1987-04-02 ES ES87302859T patent/ES2016623B3/es not_active Expired - Lifetime
- 1987-04-02 DE DE8787302859T patent/DE3764141D1/de not_active Expired - Lifetime
- 1987-04-02 EP EP87302859A patent/EP0241215B1/en not_active Expired - Lifetime
- 1987-04-06 KR KR1019870003243A patent/KR920004068B1/ko not_active IP Right Cessation
- 1987-04-06 JP JP62084499A patent/JPH0811511B2/ja not_active Expired - Fee Related
- 1987-04-06 MX MX005909A patent/MX171636B/es unknown
- 1987-04-06 CN CN87102596A patent/CN1009350B/zh not_active Expired
- 1987-04-07 BR BR8702085A patent/BR8702085A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0241215B1 (en) | 1990-08-08 |
KR870010340A (ko) | 1987-11-30 |
BR8702085A (pt) | 1988-02-09 |
MX171636B (es) | 1993-11-10 |
KR920004068B1 (ko) | 1992-05-23 |
US4899279A (en) | 1990-02-06 |
EP0241215A3 (en) | 1988-02-03 |
ES2016623B3 (es) | 1990-11-16 |
CN87102596A (zh) | 1988-08-17 |
JPS62247931A (ja) | 1987-10-29 |
DE3764141D1 (de) | 1990-09-13 |
JPH0811511B2 (ja) | 1996-02-07 |
CN1009350B (zh) | 1990-08-29 |
CA1276706C (en) | 1990-11-20 |
EP0241215A2 (en) | 1987-10-14 |