GB2198703A - An attachment for a vehicle - Google Patents
An attachment for a vehicle Download PDFInfo
- Publication number
- GB2198703A GB2198703A GB08726095A GB8726095A GB2198703A GB 2198703 A GB2198703 A GB 2198703A GB 08726095 A GB08726095 A GB 08726095A GB 8726095 A GB8726095 A GB 8726095A GB 2198703 A GB2198703 A GB 2198703A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- vehicle
- attachment
- secured
- attachment according
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/627—Devices to connect beams or arms to tractors or similar self-propelled machines, e.g. drives therefor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D87/00—Loaders for hay or like field crops
- A01D87/0053—Tractor-mounted loaders
- A01D87/0069—Tractor-mounted loaders mounted on the tractor but having their own lifting device
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
Abstract
An attachment (1) for a vehicle (2) of the type having front and rear axles (10, 10a) comprises an arm (3) adapted to be secured to a tool (17), and securing means (4) adapted to removably secure the or each arm (3) selectively to the front end or the rear end of the vehicle (2). The securing means comprises a rigid arm (8) and a resilient arm (7) such as a leaf spring. One of the mounting points (a) of the securing means (4) is located directly above the front axle (10). <IMAGE>
Description
AN ATTACHMENT FOR A VEHICLE
This invention relates to an attachment for a vehicle. More particularly the invention relates to an attachment for an agricultural vehicle such as a tractor.
An attachment of the type that is used with tractors usually comprises two arms, each arm comprising two arm members pivotally connected together; hydraulic rams are usually provided to pivot the arm members. The arms are mounted on the front of the tractor and, for the purposes of support, are attached to the tractor body between the front and rear axles. A bucket or other implement for loading material may be attached to the free ends of the arms.
The operation of the attachment depends upon the type of tool with which it is usd. When the tool is a bucket the attachment is operated to collect the material from one place, to carry it to another and to deposit it there. A disadvantage of such attachments is that with heavy material a large strain is put on the tractor body when the material is being carried. Furthermore, in order to lift the material a large distance above the ground, for example to load material into a high sided lorry, long arms are required. This creates large lifting moments in the arms which puts the tractor body under great strain; it also results in the arms extending a long way forward of the tractor when in a horizontal position.
Another disadvantage of this type of attachment is that, due to its construction, it can only be mounted on the front of the tractor.
It is an object of this invention to provide an improved attachment for a vehicle, particularly an agricultural vehicle such as a tractor.
It is a further object of this invention to provide a multi-purpose attachment for a vehicle.
According to a first aspect of this invention there is provided an attachment for a vehicle of the type having front and rear axles, said attachment comprising an arm adapted to be secured to a tool, and securing means adapted to removably secure the arm selectively to a forward or a rearward part of the vehicle, whereby the arm can be used to manipulate the tool selectively at the front or rear of the vehicle.
Advantageously the securing means includes support means for supporting the or each arm on the vehicle.
Preferably, when the attachment is secured to the forward part of the vehicle the securing means is adapted to secure the arm to the vehicle at a first point substantially above the front axle. Preferably also,the securing means is adapted to secure the arm to the vehicle at a second point disposed between the first point and the rear axle.
The weight of the arm can be transferred to the vehicle through said first and second points.
Desirably the support means includes a first load transferring member adapted to be secured between the arm and the first point.
The first load transferring member may be adapted to be pivotally secured to the vehicle.
Desirably also, the support means includes a second load transferring member adapted to be secured between the arm and the second point.
Preferably the second load transferring member is resiliently deformable. Most preferably, the second^load transferring member comprises a leaf spring.
Each arm may comprises first and second arm members, which may be pivotally secured to one another.
The first arm member may be pivotally secured to the first and second load transferring member, whilst the second arm member may be adapted to be secured to the tool.
First pivotting means in the form of a first hydraulic ram may be provided to pivot the first arm member relative to the support means. Second pivotting means in the form of a second hydraulic ram may be provided to pivot the first arm member relative to the second arm member. Third pivotting means in the form of a third hydraulic ram may be provided to pivot the second arm member relative to the tool.
The first and/or second arm member may comprise first and second portions which are telescopically arranged, whereby the length of the first and/or second arm members can be altered.
Typically two of said arms are provided, the arms being adapted to be disposed on opposite sides of the vehicle. It will be appreciated that when two arms are provided, then all the features described above in respect of one arm can be provided for each arm.
The or each arm is preferably adapted to be pivotally movable relative to the vehicle.
Tools which are suitable for use with this invention include buckets, pallet arms and muck forks. These tools are normally used to carry materials and, with the arms of the attachment, the tools can be used to lift the materials for loading purposes.
Another tool which can be used is a plough or cultivator.
Having the manipulation arrangement pivotally mounted to the front of the vehicle above the front axle, allows a substantial part of a load on the arms to be transmitted to the front axle. Thus, larger amounts of material can be lifted to higher loading positions. Also, unlike in previous constructions, it is not necessary to reinforce the tractor body midway along the length thereof.
The leaf spring is advantageous since it acts to absorb the loads on the manipulation arrangement.
The ability to secure the attachment to the forward or rearward parts of the vehicle is advantageous since it obviates the necessity of having two different attachments for using the arm at the front and the rear.
The attachment may further include ground-engaging means to facilitate movement of the attachment over the ground; the ground-engaging means may comprise, for example, wheels or rollers.
The support means preferably includes transmission means adapted to transmit loads directly from the second arm member to the vehicle through the support means.
Desirably the transmission means comprises an abutment provided on the first load transferring member.
The advantage of the transmission means is that it provides a greater degree of support for loads on the tool and it can prevent part of the load on the tool from being transferred through the pivotal connection between the first and second arm members; this allows larger loads to be manipulated.
The transmission means also allows tools which are normally attached to the rear of the vehicle for towing purposes to be attached to the front of the vehicle. Such tools include ploughs or cultivators. The tcol can be pushed by the vehicle and the load on the arrangement is transmitted to the vehicle directly through the support means, with very little of the load being taken through the arm members.
When the arrangement is used to push a tool as above, the rear of the tool may be disposed adjacent the front of the vehicle, and the front of the tool may be disposed away from the vehicle.
Elongate securing members may be provided to secure the front of the tool to the arms. Three such elongate members may be provided for three point securing of the tool to the arms.
The transmission means may include locking means to lock the arms in a retracted position.
Preferably the position at which the pivotting means is secured to the or each arm is adjustable.
One device which can be lifted by the attachment is a hay bale carrier. The attachment enables much larger loads to be carried by the carrier than has previously been possible. For example, the carrier can be arranged to carry eight tiers of bales rather than the standard four tiers which are usually carried.
The carrier is advantageously adapted to pick the bales up by squeezing them on each side and also at a front end thereof. A member may be provided for squeezing the bales at the front. When the carrier is fully loaded it can be carried by the attachmentWon the vehicle.
A calor gas burner may also be provided on the attachment for use with straw burning.
According to a second aspect of the invention there is provided an attachment for a vehicle of the type having front and rear axles, said attachment comprising an arm adapted to be secured to a tool and securing means adapted to secure the or each arm to the vehicle at a first point substantially above the first axle.
According to a third aspect of the invention there is provided an attachment for a vehicle of the type having front and rear axles, said attachment comprising an arm adapted to be secured to a tool, and securing means adapted to secure the or each arm to the vehicle, said securing means including a leaf spring adapted to be disposed between the arm and the vehicle.
According to a fourth aspect of the invention there is provided an attachment for a vehicle of the type having front and rear axles, the attachment comprising an arm having a first arm member adapted to be secured to the vehicle, and a second arm member adapted to be secured to a tool the first and second arm members being pivotally secured, securing means for securing the first arm member to the vehicle, and transmission means on the securing means for transmitting loads applied to the second arm member directly to the vehicle through the securing means.
According to a fifth aspect of the invention there is provided an attachment for a vehicle, comprising an arm adapted to be secured to a tool, and securing means for securing the or each arm to the vehicle, wherein the or each arm comprises at least one arm member having two portions arranged telescopically relative to one another, whereby the length of the arm member can be altered.
It will be appreciated that the attachment according to the second, third, fourth or fifth aspects of the invention can be provided with any combination of the features described above.
According to a sixth aspect of the invention there is provided a vehicle having an attachment as described above provided thereon.
Reference is now made to the accompanying drawings, in which:
Figure 1 is a schematic diagram of one embodiment of an attachment according to the invention on a forward part of a tractor;
Figure 2 is a schematic diagram of the embodiment of attachment shown in Figure 1 on a rearward part of the tractor;
Figure 3 is a further schematic diagram of the embodiment of attachment shown in Figure 1 on the forward part of the tractor;
Figure 4 is a schematic diagram of a further embodiment of attachment according to the invention on the rearward part of the tractor;
Figure 5 is a schematic diagram of a further embodiment of attachment according to the invention on the forward part of the tractor;
Figure 6 is a fourth schematic diagram of the embodiment of attachment shown in Figure 5 on the forward part of the tractor; and
Figure 7 is a schematic diagram of a further embodiment of attachment according to the invention on the forward part of the tractor.
Referring to Figure 1 an attachment generally designated 1 is shown on a forward part of a vehicle in the form of a tractor 2. The attachment 1 comprises a pair of spaced arms 3 and securing means 4 for securing the arms 3 to the tractor 2. The arms 3 and the securing means 4 are provided on both sides of the tractor 2.
Each arm 3 comprises first and second arm members 5 and 6 respectively. The securing means 4 includes support means in the form of first and second support members 8 and 7 respectively; the second support member 7 is in the form of a leaf spring.
The first support member 8 is pivotally mounted at a first point 9 at the front of the tractor 2; the first point 9 is disposed substantially above a front axle 10 of the tractor 2.
A first end 11 of the first support member 8 is pivotally secured to a first end 12 of the first arm member 5. The second support member 7 is secured to the first support member 8 at the end 11 thereof and to the tractor 2 at a second point 13. As shown, the second point 13 is disposed between the first point 9 and a rearward axle 10a.
A second end 14 of the first arm member 5 is pivotally secured to a first end 15 of the second arm member 6. A second end 16 of the second arm member 6 is pivotally secured to a tool 17. The tool 17 can be in the form of, for example, a muck fork, a bucket or pallet arms.
First pivotting means in the form of a hydraulic ram 18 is provided to lift or lower the first arm member 5.
The ram 18 is secured to the second support member 8 at mounting 19 and to the first arm member 5 at mounting 20.
Second pivotting means in the form of a hydraulic ram 21 is provided to lift or lower the second arm member 6. The hydraulic ram 21 is secured to the first arm member 5 at mounting 22 and to the second arm member 6 at mounting 23.
Third pivotting means in the form of a hydraulic ram 24 is provided to alter the orientation of the tool 17.
The first and second support members 8 and 7 act as load transferring members. The first support member 8 transfers the part of the load of the attachment 1 directly to the point 9, whilst the second support member 7 transfers the rest of the load of the attachment 1 directly to the point 13. This results in a triangular distribution of forces on the tractor 2.
The attachment 1 is removably secured to the front of the tractor 2.
Referring now to Figure 2, the attachment 1 is shown attached to a rearward part of the tractor 2.
Features shown in Figure 2 which are the same as in
Figure 1 are labelled with the same reference number.
When the attachment 1 is on the rear of the tractor 2 the second support member 7 is not used. A ground engaging device 25 is provided which includes wheels 26.
The ground-engaging device 25 engages the ground 27 and provides further support for the attachment 1.
The first support member 8 is secured to the vehicle by means of a securing element 28.
In operation, the attachment 1 can be used to load materials onto trucks, trailers or in other situations where it is necessary to lift material from one place to another.
The rams 18 and 21 lift or lower the first and second arm members 5 and 6 respectively. Thus, the tool 17, which carries the material, is manipulated as desired.
Referring to Figure 3 an attachment 1 is shown in which the arm members 5 and 6 are shown in a retracted position. The features of Figure 3 which are the same as
Figure 1 have been provided with the same reference numbers.
Transmission means in the form of an abutment 29 is provided which includes locking means to lock the second arm member 6 in the retracted position to the first support member 8. The second arm member 6 is secured to a tool, which in this case is in the form of a plough or cultivator 30. The cultivator 30 is of the type that has a front end 31 which is normally attached to the rear of the tractor 2. In normal operation, the cultivator 30 is towed by the tractor 2.
In operation with the attachment 1, the rear 32 of the cultivator 30 is disposed adjacent the front of the tractor 2; the front 31 of the cultivator 30 is disposed away from the front of the tractor 2.
Elongate securing members 33 are provided to secure the front 31 of the cultivator 30 to the second arm member 6. Thus, the cultivator 30 can be pushed by the tractor.
The force of the cultivator 30 when being pushed through the earth is transmitted from the second arm member 6 to the first support member 8 via the abutment 29.
The first support member 8 is pivotally secured to the tractor 2 at the point 9 above the front axle 10. The force on the second arm member 6 is thus transmitted to the front axle 10 of the tractor 2 to provide a greater degree of support.
The ground-engaging device 25 with the wheels 26 is also provided to assist the tractor 2 in pushing the cultivator 30.
A tool 17 such as a muck form, pallet arms or a bucket can also be used when the second arm member 6 is secured in the retracted position by the transmission means 29.
By securing the second arm member 6 in the retracted position, the attachment 1 can be used to carry heavy materials. The weight of the material is transmitted to the front axle 10 via the first support member 8 by the abutment 29.
Referring to Figure 4, an attachment 34 is shown.
Many of the features shown in Figure 4 are similar to those in Figure 1 and the similar features have been provided with the same reference numbers.
In Figure 4, the first arm member 5 is of adjustable length. The arm member 5 comprises first and second portions 5a and 5b which are telescopically adjustable relative to one another.
The ram 18 is adjustably secured to the first arm member 5 at a selected one of three positions 36a on a mounting 36.
These features allows the arms 3 to lift a lesser weight a large distance by extending the length of the first arm member 6 and positioning the first ram 18 at a lower position. Alternatively, the arms 3 can be adjusted to lift a large weight a small distance by reducing the length of the first arm member 6 and by positioning the first ram 18 at a higher position.
Figure 5 shows an embodiment of attachment 40 which is similar to that shown in Figure 1; like parts have been identified with like reference numerals.
In attachment 40, the second support member 7 is secured to the first support member 8 at a point 42 which is about midway along the first support member 8.
Also a lower end 44 of the first support member 8 is provided with transmission means in the form of an abutment 46.
Figure 6 shows the attachment 40 being used with the cultivator or plough 30.
In Figure 6 the second arm member 6 is secured to the front 31 of the cultivator 30, and the cultivator 30 directly engages the abutment 46.
Figure 7 shows an embodiment in which the second arm member 6 comprises an adjustable length arm member consisting of two telescopically arranged first and second portions 48 and 50.
In all the above embodiments, control means (not shown) can be provided for controlling the rams 18, 21 and 24, and for controlling the telescopically adjustable portions of the arms 5 and 6.
Claims (29)
1. An attachment for a vehicle of the type having front and rear axles, said attachment comprising an arm adapted to be secured to a tool, and securing means adapted to removably secure the arm selectively to a forward or rearward part of the vehicle, whereby the arm can be used to manipulate the tool selectively at the front or the rear of the vehicle.
2. An attachment according to Claim 1, wherein said securing means includes support means for supporting the arm on the vehicle whereby loads applied to the arm are transferred to the vehicle through the support means.
3. An attachment according to Claim 1 or 2, wherein when the attachment is secured to the forward part of the vehicle the securing means is adapted to secure the arm to the vehicle at a first point substantially above the front axle.
4. An attachment according to Claim 3, wherein when the attachment is secured to the forward part of the vehicle the securing means is adapted to secure the arm to the vehicle at a second point disposed between the first point and the rear axle.
5. An attachment according to Claim 3 or 4, wherein the weight of the arm is transferred to the vehicle through said first and/or second point.
6. An attachment according to Claim 3, 4 or 5, wherein said support means includes a first load transferring member adapted to be secured between the arm and the first point.
7. An attachment according to Claim 6, wherein said first load transferring member is adapted to be pivotally secured to the vehicle.
8. An attachment according to Claim 6 or 7, wherein the first load transferring member is rigid.
9. An attachment according to Claim 4 or to any of
Claims 5 to 8 when dependent upon Claim 4, wherein said support means includes a second load transferring member adapted to be secured between the arm and the second point.
10. An attachment according to Claim 9, wherein said second load transferring member is resiliently deformable.
11. An attachment according to Claim 9 or 10, wherein said second load transferring member comprises a leaf spring.
12. An attachment according to any preceding claim, wherein the arm comprises first and second arm members, said first and second arm members being pivotally secured to one another.
13. An attachment according to Claim 12 when dependent upon claims 6 and 9, wherein the first arm member is pivotally secured to the first and second load transferring members.
14. An attachment according to Claim 12 or 13, wherein the second arm member is adapted to be secured to the tool.
15. An attachment according to Claim 12, 13 or 14, when dependent upon Claim 2, further comprising first pivotting means adapted to pivot the first arm member relative to the support means.
16. An attachment according to any of Claims 12 to 15, further comprising second pivotting means adapted to pivot the first arm member relative to the second arm member.
17. An attachment according to any of Claims 12 to 16, further comprising third pivotting means adapted to pivot the second arm member relative to the tool.
18. An attachment according to any of Claims 12 to 17, wherein the support means further comprises transmission means adapted to transmit loads directly from the second arm member to the vehicle through the support means.
19. An attachment according to Claim 18, when dependent upon Claim 6, wherein the transmission means comprises an abutment provided on the first load transferring member.
20. An attachment according to any of Claims 12 to 19, wherein the first and/or second arm member comprises first and second portions which are telescopically arranged, whereby the length of the first and/or second arm members can be altered.
21. An attachment according to any preceding claim, wherein the arm is adapted to be pivotally movable relative to the vehicle.
22. An attachment according to any preceding claim, wherein two of said arms are provided, the arms being adapted to be disposed on opposite sides of the vehicle.
23. An attachment for a vehicle of the type having front and rear axles, said attachment comprising an arm adapted to be secured to a tool, and securing means adapted to secure the arm to the vehicle at a first point substantially above the first axle.
24. An attachment or a vehicle of the type having front and rear axles, said attachment comprising an arm adapted to be secured to a tool, and securing means adapted to secure the arm to the vehicle, said securing means including a leaf spring adapted to be disposed between the arm and the vehicle.
25. An attachment for a vehicle of the type having front and rear axles, the attachment comprising an arm having a first arm member adapted to be secured to the vehicle, and a second arm member adapted to be secured to a tool the first and second arm members being pivotally secured, securing means for securing the first arm member to the vehicle, and transmission means on the securing means for transmitting loads applied to the second arm member directly to the vehicle through the securing means.
26. An attachment for a vehicle, comprising an arm adapted to be secured to a tool, and securing means for securing the or each arm to the vehicle, wherein the arm comprises at least one arm member having two portions arranged telescopically relative to one another, whereby the length of the arm member can be altered.
27. An attachment for a vehicle substantially as herein described with reference to and as shown in the accompanying drawings.
28. A vehicle comprising a vehicle body having an attachment according to any preceding claim secured thereto.
29. A vehicle substantially as herein described with reference to and as shown in the accompanying drawings.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB868626616A GB8626616D0 (en) | 1986-11-07 | 1986-11-07 | Attachment for vehicle |
EP88305666A EP0347498A1 (en) | 1988-06-21 | 1988-06-21 | An Attachment for a vehicle |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8726095D0 GB8726095D0 (en) | 1987-12-09 |
GB2198703A true GB2198703A (en) | 1988-06-22 |
GB2198703B GB2198703B (en) | 1990-07-25 |
Family
ID=26116404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8726095A Expired - Lifetime GB2198703B (en) | 1986-11-07 | 1987-11-06 | An attachment for a vehicle |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2198703B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2659521A1 (en) * | 1990-03-14 | 1991-09-20 | Salles Maurice | Mounted assembly intended to receive various types of tools, such as scrub-clearing, mowing and other tools |
US5320472A (en) * | 1993-05-21 | 1994-06-14 | Matlack Larry W | Non-stop large bale loading, transporting and unloading machine and method |
IT202000024499A1 (en) * | 2020-10-16 | 2021-01-16 | Vincenzo Autieri | REMOVABLE DEVICE OPTIMIZED FOR A TRACTOR MACHINE |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB644445A (en) * | 1947-10-31 | 1950-10-11 | Paterson Rex Munro | Improvements in or relating to farming implements and other apparatus for handling material |
GB821359A (en) * | 1956-02-13 | 1959-10-07 | Nordpatent Ab | Improvements in or relating to tractor mounted hoisting gear |
GB859919A (en) * | 1957-11-29 | 1961-01-25 | Gray Eddie Thomas Youle | Improvements in or relating to attachments for agricultural tractors |
GB1068711A (en) * | 1957-11-29 | 1967-05-10 | Gray Eddie Thomas Youle | Improvements in or relating to attachments for agricultural tractors |
-
1987
- 1987-11-06 GB GB8726095A patent/GB2198703B/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB644445A (en) * | 1947-10-31 | 1950-10-11 | Paterson Rex Munro | Improvements in or relating to farming implements and other apparatus for handling material |
GB821359A (en) * | 1956-02-13 | 1959-10-07 | Nordpatent Ab | Improvements in or relating to tractor mounted hoisting gear |
GB859919A (en) * | 1957-11-29 | 1961-01-25 | Gray Eddie Thomas Youle | Improvements in or relating to attachments for agricultural tractors |
GB1068711A (en) * | 1957-11-29 | 1967-05-10 | Gray Eddie Thomas Youle | Improvements in or relating to attachments for agricultural tractors |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2659521A1 (en) * | 1990-03-14 | 1991-09-20 | Salles Maurice | Mounted assembly intended to receive various types of tools, such as scrub-clearing, mowing and other tools |
US5320472A (en) * | 1993-05-21 | 1994-06-14 | Matlack Larry W | Non-stop large bale loading, transporting and unloading machine and method |
IT202000024499A1 (en) * | 2020-10-16 | 2021-01-16 | Vincenzo Autieri | REMOVABLE DEVICE OPTIMIZED FOR A TRACTOR MACHINE |
Also Published As
Publication number | Publication date |
---|---|
GB2198703B (en) | 1990-07-25 |
GB8726095D0 (en) | 1987-12-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |