CA1081129A - Farm tractor having alternative component layouts - Google Patents
Farm tractor having alternative component layoutsInfo
- Publication number
- CA1081129A CA1081129A CA282,446A CA282446A CA1081129A CA 1081129 A CA1081129 A CA 1081129A CA 282446 A CA282446 A CA 282446A CA 1081129 A CA1081129 A CA 1081129A
- Authority
- CA
- Canada
- Prior art keywords
- engine
- tractor vehicle
- frame
- mounting means
- chassis frame
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D49/00—Tractors
- B62D49/08—Tractors having means for preventing overturning or tipping
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
ABSTRACT
The forward frame portion of a farm tractor is provided with a first and a second equipment accommodating mounting location so that the basic underhood equipment can be mounted in one of two configurations. The first con-figuration is generally adapted for a two wheel drive tractor where the engine is conventionally mounted between the front and rear axles of the tractor, the radiator is forward of the engine and an air cleaner is forward of the radiator. A
second configuration is adapted for use with a driven front axle thus providing a four wheel drive tractor. In this configuration the engine is located generally above the front axle, the radiator is rearward of the engine and the air cleaner is rearward of the radiator. In either of the con-figurations only one of the mounting locations is utilized while the other is unutilized.
The forward frame portion of a farm tractor is provided with a first and a second equipment accommodating mounting location so that the basic underhood equipment can be mounted in one of two configurations. The first con-figuration is generally adapted for a two wheel drive tractor where the engine is conventionally mounted between the front and rear axles of the tractor, the radiator is forward of the engine and an air cleaner is forward of the radiator. A
second configuration is adapted for use with a driven front axle thus providing a four wheel drive tractor. In this configuration the engine is located generally above the front axle, the radiator is rearward of the engine and the air cleaner is rearward of the radiator. In either of the con-figurations only one of the mounting locations is utilized while the other is unutilized.
Description
~81~Z9 F~RM TRACTOR HAVIN~, A:LTERNATIVE
COMPON~NT LAYOUTS
BACKGROUND OF T~IE INVENTION
This invention features a motor vehicle, a farm tractor in particular, whereby said motor vehicle is characterized by a front and a rear axle with optional two-wheel or four-- wheel drive, and a chassis with chassis frame, and a drive engine with cooling system arranged thereupon.
With motor vehicles, e.g. farm tractors, which can be operated by providing both two-wheel drive and four-wheel drive, it is rather difficult to achieve an optimum dead load for both driving systems. This ls mainly due to the fact that with a four-wheel drive the front axle has to be loaded considerably higher in order to prevent or minimize any slipping of the driven front wheels, particularly when the vehicle is operated on farm land.
So far it was general practice to fit the front of the farm tractor with a considerable number of counter (ballast) weights which in turn necessitated the fitting of special frame or receiving elements to the front of the farm tractor.
Naturally, such techniques proved to be troublesome, complicated, and time-consuming.
In one aspect, the invention comprehends a tractor vehicle which includes an integral transmission and rear axle carrier accommodating a rear axle housed together in a single integrated rear frame component. A pair of driven rear wheels carried outboard of the rear frame component support the rear of the tractor vehicle, and a chassis frame having a front portion and a rear portion extends forwardly from the rear frame component. The chassis frame is comprised of a f,~
- 1~)811Z9 pair of spaced apart longitudinal frame members each fixedly attached to the rear frame component, and the chassis frame includes a first and a second equipment mounting means. A
pair of steerable front wheels are supported on a front axle, and a front axle carrier at the front portion of the chassis frame suPports the front portion of the tractor vehicle. A tractor vehicle operating component set includes an engine with a belt driven fan, a radiator and an air cleaner, the tractor vehicle operating component set being supported on one of the first or the second of the pair of equipment mounting means. A chassis cowling is supported on the chassis frame, the cowling being an enclosure for the tractor vehicle operating component set. The tractor vehicle operating component set, when supported on the first equipment mounting means, has the enaine at a rear portion of the chassis frame, the air cleaner at a forward portion of the chassis frame, and the radiator between the engine and the air cleaner, and, the tractor vehicle oerating comPonent set, when supported on the second equipment mounting means, has the engine at a forward portion of the chassis frame, the air cleaner at a rear portion of the chassis frame, and the radiator between the engine and the air cleaner.
More particularly, this invention is based on the objective of providing a motor vehicle (a farm tractor in particular) of the initially mentioned kind, i.e. of frame-type or semiframe-type design, on which as much as possible identical units are used and a satisfactory load distribution balance is guaranteed even with application of different drive systems. According to the invention this problem is solved by arranging the drive engine between the front and the rear axle in case of a two-wheel drive being used, and bv arranging it above or in front of the front axle in cases where the vehicle is laid out for four-: , - ' .
1~1129 wheel drive. By applying the means described in this invention the conception of a tractor is obtained on which with unchanged basic design the different requirements originating from the dead loads specific to two-wheel and four-wheel drives can be taken into account in rather a simple manner, i.e. by moving the engine from its normal position between front and rear axle to a location above or in front of the front axle. This way the load conditions (dead load) experienced on the driven front axle are improved considerably without having to increase the gross vehicle weight by too many counterweights.
In principle, the drive engine can also be arranged in front of or above the front axle in the very same position it was arranged in between front and rear axle. With both arrange-ments the cooling system can be arranged either in front of or behind the drive engine.
However, it proved to be most effective to arrange the cooling system at that side of the drive engine which faces the front axle in cases where the drive engine is mounted be-tween the front and the rear axle, whereas in cases where the drive engine is mounted in front of or above the front axle, the cooling system is better arranged at that side of the drive engine facing the rear axle. This way it is possible to use absolutely identical chassis designs with both modes of arranging the drive engine. Thus the manufacture of the chassis is simplified considerably and so are the storage problems since mainly uniform elements are being used.
To make allowance for the varying distance between the drive engine and the transmission of the vehicle in cases where the drive engine is mounted in a different position, an art-iculated drive shaft of varying length connects the respective -engine with the respective transmission.
1081~9 Since the frame or semiframe forming the chassis, and particularly the cowling section of the drive engine are ab- -solutely identical on both the two-wheel drive and the four-wheel drive, the~cowling sections can be given the same noise reduction treatment, i.e. they can be fitted with identical sound-proofing elements. An important factor is the fact that in both positions the drive engine can be supported on the chassis - ~ frame by means of elastic elements.
Two embodiments according to the invention are shown in the drawing and are explained in detail in the following.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
FIGURE 1 shows a diagrammatic representation of a farm tractor designed for two-wheel drive, and FIGURE 2 shows a correspondingly designed farm tractor laid out for four-wheel drive.
DETAILED DESCRIPTION OF THE INVENTION
The farm tractor shown in Figure 1 has a chassis frame 1 on which a drive engine 2 is arranged. The drive engine is equipped with a flywheel 3 which, via short drive shaft 4 and a flexible clutch 5, is in drive connection with a trans-mission 6 not shown in detail. The transmission is an integral part of a rear frame component that also includes a rear axle carrier and a rear axle. On top of said transmission a power-lift housing 7 is arranged on top of which a driver's seat 8 is mounted. In the vicinity of the powerlift housing 7 the rear wheels 9 (left side wheel removed for clarity) are mounted, ~upported on the rear axle 11 of the rear frame component.
Figure 1 shows only one of the fenders 12 laterally mounted on the rear axle 11.
Above the front section of the transmission 6 and the clutch located therein, an instrument support 13, together . .
,~ ~ ,.... .
1~811~9 with a steering wheel 14, is arranged. Starting at the instrument support 13 a cowling 15, which is an engine compart-ment enclosure, extends above the chassis frame 1. An air-filter 16 i5 located underneath the front top section of said cowling 15. Furthermore, underneath the cowliny 15 a radiator 17 is arranged which, together with a fan 18, represents the cooling equipment required for the subject motor vehicle. Via a belt dri.ve 19 the dri~e engine 2 drives the fan 18. The engine, with,'the ~elt driyen fan, the radiator and the air cleaner may ' be con8idered cumulatively as th.e tractor vehicle operating component set. At the front end of the chassis frame 1 a front - axle carri.er 21 is mounted on which the front axle 22, provided to support the front wheels 23, (left front wheel removed for clarity~. is arranged. :
Th.e ch.assis frame 1 has a front portion and also a rear portion. that is fixedly attached to the rear frame member.
It is co~prised of a pair of spaced apart forwardly extending longitudinal frame members. The chassis frame is capable of supporting the tractor vehicle operating component set in eith,er the ~irst~ or two wheel drive position shown in Figure 1, o,r th.e second, or four wheel drive position shown in ~:
Figure 2. A first and a second equip~ent mounting means for accomm,odating the operating co~ponent set in eith,er the first or second equipment confi~uration layout is provided.
~ Figuxe 1 shows, the drive engine 2 is arranged in the'chassis frame 1 between the front axle 22 and the rear axle 11. Resulting from said arrangement a weight distribution balance is achieYed which, via the rear wh.eels, renders possible the transfer of adequate motive'power onto the ground 24.
On th,e whole the farm tractor shown in Flgure 2 is ident-ical with.'that shown in Figure 1 and in this figure identical reference characters identify identical components as in Fig. 1.
l~llZg There is, however, an initial difference to be found in the fact that both the front wheels 23 and the rear wheels 9 are driven, so that additional motive power can be transferred onto the ground 24. Due to the additional driving of the front wheels 23 the front axle carrier 21' is of slightly different design. Furthermore, by means of a second drive shaft 25 the front axle 22' is connected to a distributor gear or transfer case 26, which, in turn, is connected to and driven by the transmission 6.
To achieve on four-wheel-drive farm tractors an optimum load distribution balance, particularly a sufficient transfer of motive power from the front wheels 23 onto the ground 24, the drive engine 2 is arranged in front of or more precisely above the front axle 22. This arrangement produces a high load acting on the front axle and thus a satisfactory transfer of motive power is achieved from the front wheels 23 onto the ground 24. To keep the chassis,consisting of the chassis frame 1 -and the engine cowling 15 including the instrument support 13, identical with that used in the design according to Figure 1, the engine has been turned by 180, i.e. the fan 18 and the radiator 17 are now located at that side of the drive engine
COMPON~NT LAYOUTS
BACKGROUND OF T~IE INVENTION
This invention features a motor vehicle, a farm tractor in particular, whereby said motor vehicle is characterized by a front and a rear axle with optional two-wheel or four-- wheel drive, and a chassis with chassis frame, and a drive engine with cooling system arranged thereupon.
With motor vehicles, e.g. farm tractors, which can be operated by providing both two-wheel drive and four-wheel drive, it is rather difficult to achieve an optimum dead load for both driving systems. This ls mainly due to the fact that with a four-wheel drive the front axle has to be loaded considerably higher in order to prevent or minimize any slipping of the driven front wheels, particularly when the vehicle is operated on farm land.
So far it was general practice to fit the front of the farm tractor with a considerable number of counter (ballast) weights which in turn necessitated the fitting of special frame or receiving elements to the front of the farm tractor.
Naturally, such techniques proved to be troublesome, complicated, and time-consuming.
In one aspect, the invention comprehends a tractor vehicle which includes an integral transmission and rear axle carrier accommodating a rear axle housed together in a single integrated rear frame component. A pair of driven rear wheels carried outboard of the rear frame component support the rear of the tractor vehicle, and a chassis frame having a front portion and a rear portion extends forwardly from the rear frame component. The chassis frame is comprised of a f,~
- 1~)811Z9 pair of spaced apart longitudinal frame members each fixedly attached to the rear frame component, and the chassis frame includes a first and a second equipment mounting means. A
pair of steerable front wheels are supported on a front axle, and a front axle carrier at the front portion of the chassis frame suPports the front portion of the tractor vehicle. A tractor vehicle operating component set includes an engine with a belt driven fan, a radiator and an air cleaner, the tractor vehicle operating component set being supported on one of the first or the second of the pair of equipment mounting means. A chassis cowling is supported on the chassis frame, the cowling being an enclosure for the tractor vehicle operating component set. The tractor vehicle operating component set, when supported on the first equipment mounting means, has the enaine at a rear portion of the chassis frame, the air cleaner at a forward portion of the chassis frame, and the radiator between the engine and the air cleaner, and, the tractor vehicle oerating comPonent set, when supported on the second equipment mounting means, has the engine at a forward portion of the chassis frame, the air cleaner at a rear portion of the chassis frame, and the radiator between the engine and the air cleaner.
More particularly, this invention is based on the objective of providing a motor vehicle (a farm tractor in particular) of the initially mentioned kind, i.e. of frame-type or semiframe-type design, on which as much as possible identical units are used and a satisfactory load distribution balance is guaranteed even with application of different drive systems. According to the invention this problem is solved by arranging the drive engine between the front and the rear axle in case of a two-wheel drive being used, and bv arranging it above or in front of the front axle in cases where the vehicle is laid out for four-: , - ' .
1~1129 wheel drive. By applying the means described in this invention the conception of a tractor is obtained on which with unchanged basic design the different requirements originating from the dead loads specific to two-wheel and four-wheel drives can be taken into account in rather a simple manner, i.e. by moving the engine from its normal position between front and rear axle to a location above or in front of the front axle. This way the load conditions (dead load) experienced on the driven front axle are improved considerably without having to increase the gross vehicle weight by too many counterweights.
In principle, the drive engine can also be arranged in front of or above the front axle in the very same position it was arranged in between front and rear axle. With both arrange-ments the cooling system can be arranged either in front of or behind the drive engine.
However, it proved to be most effective to arrange the cooling system at that side of the drive engine which faces the front axle in cases where the drive engine is mounted be-tween the front and the rear axle, whereas in cases where the drive engine is mounted in front of or above the front axle, the cooling system is better arranged at that side of the drive engine facing the rear axle. This way it is possible to use absolutely identical chassis designs with both modes of arranging the drive engine. Thus the manufacture of the chassis is simplified considerably and so are the storage problems since mainly uniform elements are being used.
To make allowance for the varying distance between the drive engine and the transmission of the vehicle in cases where the drive engine is mounted in a different position, an art-iculated drive shaft of varying length connects the respective -engine with the respective transmission.
1081~9 Since the frame or semiframe forming the chassis, and particularly the cowling section of the drive engine are ab- -solutely identical on both the two-wheel drive and the four-wheel drive, the~cowling sections can be given the same noise reduction treatment, i.e. they can be fitted with identical sound-proofing elements. An important factor is the fact that in both positions the drive engine can be supported on the chassis - ~ frame by means of elastic elements.
Two embodiments according to the invention are shown in the drawing and are explained in detail in the following.
BRIEF DESCRIPTION OF THE DRAWING FIGURES
FIGURE 1 shows a diagrammatic representation of a farm tractor designed for two-wheel drive, and FIGURE 2 shows a correspondingly designed farm tractor laid out for four-wheel drive.
DETAILED DESCRIPTION OF THE INVENTION
The farm tractor shown in Figure 1 has a chassis frame 1 on which a drive engine 2 is arranged. The drive engine is equipped with a flywheel 3 which, via short drive shaft 4 and a flexible clutch 5, is in drive connection with a trans-mission 6 not shown in detail. The transmission is an integral part of a rear frame component that also includes a rear axle carrier and a rear axle. On top of said transmission a power-lift housing 7 is arranged on top of which a driver's seat 8 is mounted. In the vicinity of the powerlift housing 7 the rear wheels 9 (left side wheel removed for clarity) are mounted, ~upported on the rear axle 11 of the rear frame component.
Figure 1 shows only one of the fenders 12 laterally mounted on the rear axle 11.
Above the front section of the transmission 6 and the clutch located therein, an instrument support 13, together . .
,~ ~ ,.... .
1~811~9 with a steering wheel 14, is arranged. Starting at the instrument support 13 a cowling 15, which is an engine compart-ment enclosure, extends above the chassis frame 1. An air-filter 16 i5 located underneath the front top section of said cowling 15. Furthermore, underneath the cowliny 15 a radiator 17 is arranged which, together with a fan 18, represents the cooling equipment required for the subject motor vehicle. Via a belt dri.ve 19 the dri~e engine 2 drives the fan 18. The engine, with,'the ~elt driyen fan, the radiator and the air cleaner may ' be con8idered cumulatively as th.e tractor vehicle operating component set. At the front end of the chassis frame 1 a front - axle carri.er 21 is mounted on which the front axle 22, provided to support the front wheels 23, (left front wheel removed for clarity~. is arranged. :
Th.e ch.assis frame 1 has a front portion and also a rear portion. that is fixedly attached to the rear frame member.
It is co~prised of a pair of spaced apart forwardly extending longitudinal frame members. The chassis frame is capable of supporting the tractor vehicle operating component set in eith,er the ~irst~ or two wheel drive position shown in Figure 1, o,r th.e second, or four wheel drive position shown in ~:
Figure 2. A first and a second equip~ent mounting means for accomm,odating the operating co~ponent set in eith,er the first or second equipment confi~uration layout is provided.
~ Figuxe 1 shows, the drive engine 2 is arranged in the'chassis frame 1 between the front axle 22 and the rear axle 11. Resulting from said arrangement a weight distribution balance is achieYed which, via the rear wh.eels, renders possible the transfer of adequate motive'power onto the ground 24.
On th,e whole the farm tractor shown in Flgure 2 is ident-ical with.'that shown in Figure 1 and in this figure identical reference characters identify identical components as in Fig. 1.
l~llZg There is, however, an initial difference to be found in the fact that both the front wheels 23 and the rear wheels 9 are driven, so that additional motive power can be transferred onto the ground 24. Due to the additional driving of the front wheels 23 the front axle carrier 21' is of slightly different design. Furthermore, by means of a second drive shaft 25 the front axle 22' is connected to a distributor gear or transfer case 26, which, in turn, is connected to and driven by the transmission 6.
To achieve on four-wheel-drive farm tractors an optimum load distribution balance, particularly a sufficient transfer of motive power from the front wheels 23 onto the ground 24, the drive engine 2 is arranged in front of or more precisely above the front axle 22. This arrangement produces a high load acting on the front axle and thus a satisfactory transfer of motive power is achieved from the front wheels 23 onto the ground 24. To keep the chassis,consisting of the chassis frame 1 -and the engine cowling 15 including the instrument support 13, identical with that used in the design according to Figure 1, the engine has been turned by 180, i.e. the fan 18 and the radiator 17 are now located at that side of the drive engine
2 facing the rear axle 11. The oil pan has been reversed and the fan driving axle lengthened. The same applies to the air-filter 16 which is now located between the radiator 17 and the instrument support 13. To bridge the somewhat large spacing between the belt-drive 19 of the drive engine 2 and the trans-mission 6, the short drive shaft 4 has been replaced with an elongated drive shaft 4', the ends of which have been fitted with flexible clutches 5' and 27.
Despite the differing arrangements of the drive engine 2 and the other components of the operating component set, good load distribution balance as well as excellent!cooling per-formance is attained. Also the noise emission developed with ~ ' ~ 6 " " ' ' "~ ' ': .~ ' ' ," , , ~811Z9 both modes of design or drive is minimized. The drive engine 2 is supported on the chassis frame 1 by means of elastic elements not shown in detail.
' :' ,' '' ' ..... ,' ' ~ :
Despite the differing arrangements of the drive engine 2 and the other components of the operating component set, good load distribution balance as well as excellent!cooling per-formance is attained. Also the noise emission developed with ~ ' ~ 6 " " ' ' "~ ' ': .~ ' ' ," , , ~811Z9 both modes of design or drive is minimized. The drive engine 2 is supported on the chassis frame 1 by means of elastic elements not shown in detail.
' :' ,' '' ' ..... ,' ' ~ :
Claims (3)
1. A tractor vehicle comprising:
an integral transmission and rear axle carrier accommod-ating a rear axle housed together in a single integrated rear frame component;
a pair of driven rear wheels carried outboard of said rear frame component supporting the rear of said tractor vehicle;
a chassis frame having a front portion and a rear portion extending forwardly from said rear frame component, said chassis frame comprised of a pair of spaced apart longitudinal frame members each fixedly attached to said rear frame component, said chassis frame including a first and a second equipment mounting means;
a pair of steerable front wheels supported on a front axle and a front axle carrier at the front portion of said chassis frame supporting the front portion of said tractor vehicle;
a tractor vehicle operating component set including an engine with a belt driven fan, a radiator and an air cleaner, said tractor vehicle operating component set supported on one of said first or said second of said pair of equipment mounting means;
a chassis cowling supported on said chassis frame, said cowling being an enclosure for said tractor vehicle operating component set;
whereby said tractor vehicle operating component set, when supported on said first equipment mounting means, has said engine at a rear portion of said chassis frame, said air cleaner at a forward portion of said chassis frame, and said radiator between said engine and said air cleaner, and, whereby said tractor vehicle operating component set, when supported on said second equipment mounting means has said engine at a forward portion of said chassis frame, said air cleaner at a rear portion of said chassis frame, and said radiator between said engine and said air cleaner.
an integral transmission and rear axle carrier accommod-ating a rear axle housed together in a single integrated rear frame component;
a pair of driven rear wheels carried outboard of said rear frame component supporting the rear of said tractor vehicle;
a chassis frame having a front portion and a rear portion extending forwardly from said rear frame component, said chassis frame comprised of a pair of spaced apart longitudinal frame members each fixedly attached to said rear frame component, said chassis frame including a first and a second equipment mounting means;
a pair of steerable front wheels supported on a front axle and a front axle carrier at the front portion of said chassis frame supporting the front portion of said tractor vehicle;
a tractor vehicle operating component set including an engine with a belt driven fan, a radiator and an air cleaner, said tractor vehicle operating component set supported on one of said first or said second of said pair of equipment mounting means;
a chassis cowling supported on said chassis frame, said cowling being an enclosure for said tractor vehicle operating component set;
whereby said tractor vehicle operating component set, when supported on said first equipment mounting means, has said engine at a rear portion of said chassis frame, said air cleaner at a forward portion of said chassis frame, and said radiator between said engine and said air cleaner, and, whereby said tractor vehicle operating component set, when supported on said second equipment mounting means has said engine at a forward portion of said chassis frame, said air cleaner at a rear portion of said chassis frame, and said radiator between said engine and said air cleaner.
2. The invention in accordance with Claim 1 wherein said tractor vehicle is a two wheel drive tractor vehicle and said tractor vehicle operating component set is supported on said first equipment mounting means;
said second equipment mounting means being unutilized;
a short drive shaft connecting said engine of said vehicle operating component set to said transmission of said rear frame component.
said second equipment mounting means being unutilized;
a short drive shaft connecting said engine of said vehicle operating component set to said transmission of said rear frame component.
3. The invention in accorance with Claim 1 wherein said tractor vehicle is a four wheel drive vehicle and said tractor vehicle operating component set is supported on said second equipment mounting means;
said first equipment mounting means being unutilized;
an elongated drive shaft connecting said engine of said vehicle operating component set to said rear frame component;
a transfer case appended to said transmission and being driven therefrom;
a second drive shaft extending forwardly from said transfer case to said front axle of said steerable front wheels.
said first equipment mounting means being unutilized;
an elongated drive shaft connecting said engine of said vehicle operating component set to said rear frame component;
a transfer case appended to said transmission and being driven therefrom;
a second drive shaft extending forwardly from said transfer case to said front axle of said steerable front wheels.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762633060 DE2633060B2 (en) | 1976-07-22 | 1976-07-22 | Motor vehicle, in particular agricultural tractor in frame or half-frame construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1081129A true CA1081129A (en) | 1980-07-08 |
Family
ID=5983704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA282,446A Expired CA1081129A (en) | 1976-07-22 | 1977-07-11 | Farm tractor having alternative component layouts |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1081129A (en) |
| DE (1) | DE2633060B2 (en) |
| FR (1) | FR2359020A1 (en) |
| GB (1) | GB1587451A (en) |
-
1976
- 1976-07-22 DE DE19762633060 patent/DE2633060B2/en not_active Withdrawn
-
1977
- 1977-07-11 CA CA282,446A patent/CA1081129A/en not_active Expired
- 1977-07-18 GB GB3005677A patent/GB1587451A/en not_active Expired
- 1977-07-18 FR FR7721927A patent/FR2359020A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2359020A1 (en) | 1978-02-17 |
| DE2633060B2 (en) | 1979-03-01 |
| DE2633060A1 (en) | 1978-01-26 |
| GB1587451A (en) | 1981-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |