GB2172037A - Improvements relating to mounting of snow ploughs - Google Patents
Improvements relating to mounting of snow ploughs Download PDFInfo
- Publication number
- GB2172037A GB2172037A GB08604049A GB8604049A GB2172037A GB 2172037 A GB2172037 A GB 2172037A GB 08604049 A GB08604049 A GB 08604049A GB 8604049 A GB8604049 A GB 8604049A GB 2172037 A GB2172037 A GB 2172037A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arms
- plough
- standard frame
- mounting
- mounting arrangement
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/14—Draw-gear or towing devices characterised by their type
- B60D1/141—Arrangements or frames adapted to allow the connection of trailers to tractor three point hitches
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
- A01B59/06—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
- A01B59/064—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors for connection to the front of the tractor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B59/00—Devices specially adapted for connection between animals or tractors and agricultural machines or implements
- A01B59/06—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors
- A01B59/066—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors of the type comprising at least two lower arms and one upper arm generally arranged in a triangle (e.g. three-point hitches)
- A01B59/068—Devices specially adapted for connection between animals or tractors and agricultural machines or implements for machines mounted on tractors of the type comprising at least two lower arms and one upper arm generally arranged in a triangle (e.g. three-point hitches) the lower arms being lifted or lowered by power actuator means provided externally on the tractor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/42—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable
- B60D1/46—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically
- B60D1/465—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically comprising a lifting mechanism, e.g. for coupling while lifting
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
- E01H5/04—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material
- E01H5/06—Apparatus propelled by animal or engine power; Apparatus propelled by hand with driven dislodging or conveying levelling elements, conveying pneumatically for the dislodged material dislodging essentially by non-driven elements, e.g. scraper blades, snow-plough blades, scoop blades
-
- 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
- E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
- E02F3/7622—Scraper equipment with the scraper blade mounted on a frame to be hitched to the tractor by bars, arms, chains or the like, the frame having no ground supporting means of its own, e.g. drag scrapers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Zoology (AREA)
- Soil Sciences (AREA)
- Transportation (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Soil Working Implements (AREA)
Abstract
A mounting arrangement for mounting a snow plough on a vehicle having a standard mounting frame (14) with three lower and three upper mounting lugs, comprises a parallelogram linkage swingable on a vertical plane with one end attached to the plough and the other end having hooks and eyes for pivotal engagement with pins in the lugs on the standard frame. To detach the plough, the pins connecting the eyes to the standard frame are removed, and a lifting means connected to the linkage is operated. The hooks are raised clear of the associated pins and the vehicle can be driven rearwards. Coupling of the mounting is by a reverse procedure. <IMAGE>
Description
SPECIFICATION
Improvements relating to mounting of snow ploughs
This invention relates to the mounting of snow ploughs, and in particular concerns a means whereby a snow plough may be readily and easily connected to a mounting frame or plate of a particular design.
In this country, there is a standard mounting frame or plate for snow ploughs, enabling snow ploughs to be mounted on commercial vehicles, for the clearing of snow by local authorities and the like during the relevant winter periods.
The said mounting plate or frame, which is a standard mounting plate or frame, comprises essentially a rectangular frame which when connected to the vehicle lies with its longer axis horizontal, and the frame has six forwardly projecting lug mountings, respectively at the corners of the frame and at the centres of the longer sides of the frame, each lug mounting comprising a pair of spaced lugs, and the lugs having apertures therein for receiving fixing pins.
The snow ploughs which are used with the standard mounting plate comprise arms connected to a plough blade, and the arms at the ends thereof have eyes for receipt in appropriate ones of the mounting lug pairs on the standard mounting plate, and for connection thereto using connection pins.
The plough also has a hydraulic ram in order to effect the raising and lowering of the plough blade, during which movement the said arms pivot with respect to the vehicle and plough.
The coupling of the arms to the standard plate is a difficult and time consuming job, and as it is usually performed out of doors, and when weather conditions are severe, it is invariably an unpleasant task, particularly as the snow ploughs are relatively heavy units, and considerable effort is required to manipulate the arms into position between the lug pairs.
The present invention seeks to provide a means whereby these difficulties can be overcome, and in accordance with the invention there is provided a snow plough and a mounting arrangement comprising arms defining a parallelogram type linkage for connection between the standard frame and the plough, including means for raising the ends of the arms when the mounting arrangement is disconnected from the standard frame means connecting the arms so that they will remain in the parallelogram type configuration when the mounting arrangement is disconnected from the standard frame, the couplings for coupling the mounting arrangement to the standard frame comprising hook means for hooking into the fixing pins of some of the lugs of the standard frame and eye means for coupling to others of the lugs of the standard frame.
The said means connecting may be a flat plate to one side of which the arms are pivotably connected and to the other side of which are said hook means and said eye means.
Alternatively said means connecting may comprise links pivotally connected to respective ones of said arms and said hook means and eye means being securely connected to the ends of respective ones of said arms.
The advantage of the mounting arrangement of the present invention is that coupling of the mounting arrangement to the standard frame is simplified in that when the fixing pins connecting the eye means and the appropriate ones of the fixing lugs are removed, the said means for raising the ends of the arms is operated, and the hook means unhook from the fixing pins at others of said pairs of lugs of the standard frame, completing the uncoupling of the mounting arrangement from the standard frame which is attached to the vehicle, and the vehicle can be driven backwards. During the lifting of the said arms, the plough itself will provide sufficient mass against which the means for raising can react in order to effect the lifting of the arms.When it is required once more to couple the standard frame to the mounting arrangement, the driver simply manipulates the vehicle into position, and then arranges for the lowering of the arms until the hook means engage the selected ones of the fixing pins, which operation will bring the eye means into register with other mounting lugs of the standard frame, and the eyes can be secured to the standard frame by passing the fixing pins through the aligned apertures in the lugs and eyes.
The invention will be better understood by considering the following explanation given with reference to the accompanying drawings, which show an example of the invention, and wherein:
Figure 1 is a perspective view showing the mounting arrangement according to the embodiment;
Figure 2 is a side elevation of the arrangement shown in Figure 1, this figure also showing how the mounting arrangement can be uncoupled from the standard frame; and
Figure 3 is a side elevation showing the hook ends of the hook plates showing the guide fingers thereon.
Referring to the drawings, and firstly to Figure 2, the front end 10 of a tractor is shown, and also shown is the tractor front wheel 12. Connected to the front of the tractor is the standard frame 14, and the snow plough 16 is coupled to the frame 14 by means of a mounting arrangement 18 according to this embodiment of the invention.
If reference is now made to Figure 1, the frame 14 will be seen to comprise a rectangular open structure, which is in fact made of steel, and lies with its longer axis horizontal. It is provided with six pairs of mounting lugs 20 to 30, arranged in two groups of three, the first group of three lying along the top front edge of the frame 14, and the other three lying along the bottom front edge of the frame.
The mounting arrangement comprises two Aframes 32 and 34 which lie basically horizontally, and have arms 32A, 32B and 34A, 34B to which are secured, in the case of arms 32, mounting hook plates 36, and in the case of arms 34 mounting eye plates 38. The frames 32 and 34 define a parallelogram type linkage and the frames are preferably parallel but need not be. The hook plates 36 as shown in Figure 3 have hooks 36A which respective ly engage pins extending between the lug pairs 20 and 24 as shown in Figure 1, and guide plates or fingers 36B whilst the eye plates 38 respectively engage the lug pairs 26 and 30 and are coupled thereto by fixing pins passing through aligned apertures in the lugs and connecting plates.A brace bar 40 extends between the arms 34A and 34B of the lower A-frame, and an additional hooking plate 42 extends from bar 40 so that its hooked end engages a pin extending between the lugs of lug pair 28.
Links 44 couple the ends of arms 32B and 34B and 32A and 34A respectively, the links 44 being pivotally connected to such arms.
The hydraulic ram 46 is pivotally connected between the bar 40, and the forward end of frame 32.
The crown side of the piston as shown at 46 is pressurised with hydraulic fluid to enable the effective length of the ram to be increased, thereby, when the mounting arrangement is coupled as shown in
Figure 1, to lift the forward ends of frames 32 and 34, and thereby to lift the plough 16 clear of the ground for transportation. Release of the hydraulic pressure in the crown side of ram 46 enables the plough 16 by its own weight to fall back to the position shown in
Figure 2 wherein the bottom edge of the plough engages the ground for the clearing of snow and the like.
The plough 16 is connected to the mounting arrangement via a vertical steel channel bar 48 which has top and bottom lugs 50 and 52 defining vertical pivotal connections 54 and 56, whilst brackets 58 and 60 on the end of the arms 32 and 34 define pivot axes 62 and 64 so that in fact bar 48 is coupled to arms 32 and 34 via universal joints enabling the lifting and lowering of the arms without changing the anguiarity of the plough 16 to the ground, and also enabling the slewing of the plough about the axes 54 and 56 to alter its attitude in relation to the fore and aft direction of the vehicle. It is to be noted that a coupling bar 66 connected between the frame 34 and the plough may be used to keep the plough in fixed angle in relation to the fore and aft direction of the vehicle.Bar 66 may be of adjustable length by being telescopic so that the angularity of the plough in relation to the fore and aft direction of the vehicle can be set to suit snow conditions. The greater the plough angle, the less the swept width of the plough, which allows for vehicles of different width to use the same plough.
The universal joints 54, 62 and 56, 64 may comprise rubber shock absorbing bushings, and these may be employed in the joints coupling the bar 66 to the plough and frame 34.
By coupling the plough to the standard frame 14 via a parallelogram type linkage 32,34, a number of advantages are achieved including that the correct movement between the plough blade and the vehicle on an undulating road surface is achieved. This is important in that the ploughs are usually pushed by gritting vehicles, and as such vehicles progressively discharge their load of grit, the height of the fixing pins on the standard frame varies between the full loaded and unloaded condition of the vehicle. The use of the parallelogram type linkage means that the plough operates at the correct attitude in relation to the road.
In order to disconnect the attachment from the standard frame 14, the pins in lug pairs 26 and 30 are removed, in order to free the eye plates 38, and then the rod side of piston and cylinder device 46 is pressurised, for example using relatively low pressure gas, which may be supplied from a hydrogas type hydraulic accumulator which may be mounted on one of the frames 32 and 34, the piston and cylinder device 46 is contracted, and as the plough 16 is relatively massive compared to the weight of the arms 32,34, with this contraction of the ram 46, the arms 32,34 are raised as shown in dotted lines in
Figure 2, unhooking the hook plates 36 and 42 from the fixing pins in lug pairs 20,24 and 28 whereby the mounting arrangement is disconnected from the standard mounting plate 14, and the tractor vehicle can be driven rearwards leaving the mounting arrangement with the plough.It may be necessary also to uncouple hydraulically the vehicle from the ram 46.
When it is desired to re-couple the arms 32,34 of the vehicle 10, the arms 32,34 are lowered and the vehicle is driven into position, so that at least one of the pins of lugs 20, 24, 28 is engaged by the associated plate 36B and continued advance of the vehicle effects squaring up of the plough if the plough and vehicle are not initially in alignment until all the hook plates 36B (and 42B) are in position to engage the pins between the lug pairs 20, 24 and 28.
Any hydraulic coupling as may be necessary is made and then the ram is powered to lower the hooks 36A (42A) onto their pins and finally the fixing pins are inserted through the lug pairs 26 and 30 and the eye plates now located there-between to complete the coupling. The operation is simple and effective.
The link bars 44 ensure that when the arms 32 and 34 are raised to the disconnected position shown in
Figure 2, the arms 32 and 34 will remain in the correct geometric relationship enabling the rapid reconnection of the arms to the standard frame.
It will be appreciated that if any hydraulic coupings are required to be made between the vehicle and ram 46, then such couplings will be self sealing when disconnected.
It is possible that the ram 46 may be operated by means of a hand pump, but as explained herein it is preferred that the ram 46 be a double acting ram or in an alternative arrangement, a spring device could be provided to close a single acting ram to perform the same function as the supply of low pressure gas to the ram 46 as explained herein. The spring would therefore contract the ram 46 and effect raising of the arms 32 and 34 as explained with reference to
Figure 2. When low pressure gas is however used on the rod side of the piston cylinder device 46, pressure on that side of the ram will help to stop the plough bouncing when it is driven at too high a speed.
It is necessary to have positive connection of the mounting arrangement with at least some of the lug pairs on the mounting frame to retain the plough on the vehicle when in use and when during transportation. It is preferably to use the bottom two lug pairs 26,30 for this purpose as it is at these locations where the majority of the thrust (from the bottom rubber or steel edge of the plough in contact with the snow or road) is applied to the vehicle.
In an alternative arrangement, instead of using the links 44, there may be an intermediate mounting plate to which the ends of the arms 32 and 34 are connected pivotally, through, for example, eyes and lugs, and in the opposite side of the said plate would be provided hooks such as hooks 36, and eyes such as eyes 38. The plate would be permanently connected to the frames 32 and 34, and the advantage of this arrangement is that such a plate could be fitted to existing ploughs already in operators' possession.
The disadvantage of this arrangement is that it increases the overall length of the mounting arrangement and therefore increases the overhanging front axle loading on the vehicle when the plough is being carried in the raised position.
Although the arrangement described illustrates three hook plates 36 and 42 connected to three of the fixing pins of three of the lug pairs of the standard mounting frame, with two eyes connected at lug pairs 26 and 30, it is to be appreciated that this is not intended to limit the invention to the utilisation of these particular fixing pins, as other fixing pins could be used as required.
In an alternative arrangementforthe raising of the ends of the frames 30,32 when the mounting arrangement is disconnected from the vehicle, a screw jack with a castor wheel may be employed, the castor wheel reacting against the ground as the screw jack is turned to press the castor wheel downwardly, and the arms being lifted by reaction.
When a spring device is used for contracting the ram 46, this device may be in the form of a pair of springs at respective sides of the hydraulic cylinder.
Instead of coil springs for retracting the jack a hydracushion may be used, which is a device comprising a flexible enclosure containing oil connected to the side of the ram pressurization of which will cause retraction of same. The enclosure is contained in a balloon which is pressurised with gas so that the gas pressure is experienced and the oil in the enclosure pressurising said side of the ram always tending to contract same. When the plough is disconnected, the pressure on the ram lifts the arms facilitating subsequent hook in of the plough.
Also, the maintenance of the pressure in the ram
by the hydracushion prevents or limits "plough
bounce" in operation.
Claims (1)
1. A snow plough and a mounting arrangement
comprising arms defining a parallelogram type
linkage for connection between the standard frame
and the plough, including means for raising the ends
of the arms when the mounting arrangement is
disconnected from the standard frame means con
necting the arms so that they will remain in the
parallelogram type configuration when the mount
ing arrangement is disconnected from the standard
frame, the couplings for coupling the mounting
arrangement to the standard frame comprising hook
means for hooking into the fixing pins of some of the lugs of the standard frame and eye means for coupling to others of the lugs of the standard frame.
2. The arrangement according to claim 1, wherein said means connecting comprises a flat plate to one side of which the arms are pivotably connected and to the other side of which are said hook means and said eye means.
3. The arrangement according to Claim 1, wherein said means connecting comprises links pivotally connected to respective ones of said arms and said hook means and eye means being securely connected to the ends of respective ones of said arms.
4. The arrangement according to claim 1 or 2, wherein the lock means have guide plates against which the fixing pins of the standard mounting frame abut to register the positioning of the hook means prior to lowering of same onto said fixing pins during completing ofthe mounting arrangement to the standard frame.
5. The arrangement according to any preceding claim wherein said means for raising the arms on the plough comprises a double active fluid pressure operated cylinder connected between the arms.
6. The arrangement according to any preceding claim wherein said means for raising the arms on the plough comprises a screw jack connected to at least one of the arms and a ground engaging wheel which reacts against the ground to lift the arms when the jack is operated.
7. The arrangement according to any preceding claim wherein said means for raising the arms on the plough comprises a single acting fluid pressure operated ram for lowering the arms and spring means for raising the arms.
8. A snow plough and mounting arrangement substantially as hereinbefore described with reference to the accompanying drawings.
Amendments to the claims have been filed, and have the following effect:
(a) Claims 1 above have been deleted or textually amended.
(b) New or textually amended claims have been filed as follows:
1. A snow plough and a mounting arrangement comprising arms defining a parallelogram type linkage pivotally connected to the plough and for pivotal connection to the standard frame whereby the plough can be raised and lowered relative to the standard frame by pivoting said linkage, including means for pivoting the linkage relative to the plough to raise the ends of the arms when the mounting arrangement is disconnected from the standard frame, means connecting the arms so that they will remain in the parallelogram type configuration when the mounting arrangement is disconnected from the standard frame, and couplings for coupling the mounting arrangement to the standard frame comprising hook means for hooking onto the fixing pins of some of the lugs of the standard frame and eye means for coupling to others of the lugs of the standard frame.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB858505955A GB8505955D0 (en) | 1985-03-07 | 1985-03-07 | Mounting of snow ploughs |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8604049D0 GB8604049D0 (en) | 1986-03-26 |
| GB2172037A true GB2172037A (en) | 1986-09-10 |
| GB2172037B GB2172037B (en) | 1987-12-16 |
Family
ID=10575623
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB858505955A Pending GB8505955D0 (en) | 1985-03-07 | 1985-03-07 | Mounting of snow ploughs |
| GB08604049A Expired GB2172037B (en) | 1985-03-07 | 1986-02-19 | Improvements relating to mounting of snow ploughs |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB858505955A Pending GB8505955D0 (en) | 1985-03-07 | 1985-03-07 | Mounting of snow ploughs |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8505955D0 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561191A1 (en) * | 1992-03-16 | 1993-09-22 | GKN Walterscheid GmbH | Traction device |
| FR2709398A1 (en) * | 1993-09-04 | 1995-03-10 | Pearson Eng Ltd | Coupling (hitch) for fitting an implement onto a vehicle |
| EP2466014A1 (en) * | 2010-12-14 | 2012-06-20 | Caterpillar, Inc. | Linkage arrangement |
| US9085860B2 (en) | 2012-09-04 | 2015-07-21 | Universal Truck Equipment, Inc. | Wing plow post |
| EP3040481A1 (en) * | 2014-12-29 | 2016-07-06 | Caterpillar Inc. | Support frame for adjustable blade assembly |
| NO340611B1 (en) * | 2014-02-07 | 2017-05-15 | Tokvam As | Vehicle suspension for work tools |
| GB2545319A (en) * | 2015-12-13 | 2017-06-14 | Pearson Eng Ltd | A mountable vehicle implement |
| US9752293B2 (en) | 2012-09-04 | 2017-09-05 | Universal Truck Equipment, Inc. | Wing plow post |
| US10053826B1 (en) | 2014-12-12 | 2018-08-21 | Alamo Group Inc. | Wing plow apparatus |
| WO2019232592A1 (en) * | 2018-06-08 | 2019-12-12 | K Factor Consulting Pty Ltd | Improved trasher arrangement and parallelogram mounting system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2869254A (en) * | 1954-04-29 | 1959-01-20 | Root Spring Scraper Company | Snow plow mount for a radially swingable snow plow |
| GB2037848A (en) * | 1978-12-12 | 1980-07-16 | Beales Steel Prod | Scraping Tool Mounting Assembly |
| GB1576773A (en) * | 1976-04-17 | 1980-10-15 | Walterscheid Gmbh Jean | Coupling hook |
| EP0046214A2 (en) * | 1980-08-16 | 1982-02-24 | Ing. Alfred Schmidt Gmbh | Control appliance for the hydraulically operated scraper blade attached to a snow removal equipment |
| EP0111882A2 (en) * | 1982-12-13 | 1984-06-27 | Ing. Alfred Schmidt Gmbh | Snow-plough |
| EP0138519A2 (en) * | 1983-10-07 | 1985-04-24 | AGRICULTURAL REQUISITES & MECHANIZATIONS LTD | Towing hitches |
-
1985
- 1985-03-07 GB GB858505955A patent/GB8505955D0/en active Pending
-
1986
- 1986-02-19 GB GB08604049A patent/GB2172037B/en not_active Expired
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2869254A (en) * | 1954-04-29 | 1959-01-20 | Root Spring Scraper Company | Snow plow mount for a radially swingable snow plow |
| GB1576773A (en) * | 1976-04-17 | 1980-10-15 | Walterscheid Gmbh Jean | Coupling hook |
| GB2037848A (en) * | 1978-12-12 | 1980-07-16 | Beales Steel Prod | Scraping Tool Mounting Assembly |
| EP0046214A2 (en) * | 1980-08-16 | 1982-02-24 | Ing. Alfred Schmidt Gmbh | Control appliance for the hydraulically operated scraper blade attached to a snow removal equipment |
| EP0111882A2 (en) * | 1982-12-13 | 1984-06-27 | Ing. Alfred Schmidt Gmbh | Snow-plough |
| EP0138519A2 (en) * | 1983-10-07 | 1985-04-24 | AGRICULTURAL REQUISITES & MECHANIZATIONS LTD | Towing hitches |
Non-Patent Citations (2)
| Title |
|---|
| WO 82/02814 * |
| WO 86/00352 * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561191A1 (en) * | 1992-03-16 | 1993-09-22 | GKN Walterscheid GmbH | Traction device |
| FR2709398A1 (en) * | 1993-09-04 | 1995-03-10 | Pearson Eng Ltd | Coupling (hitch) for fitting an implement onto a vehicle |
| EP2466014A1 (en) * | 2010-12-14 | 2012-06-20 | Caterpillar, Inc. | Linkage arrangement |
| WO2012079754A1 (en) | 2010-12-14 | 2012-06-21 | Caterpillar Inc. | Linkage arrangement |
| US9027663B2 (en) | 2010-12-14 | 2015-05-12 | Caterpillar Inc. | Linkage arrangement |
| US9752293B2 (en) | 2012-09-04 | 2017-09-05 | Universal Truck Equipment, Inc. | Wing plow post |
| US9085860B2 (en) | 2012-09-04 | 2015-07-21 | Universal Truck Equipment, Inc. | Wing plow post |
| NO340611B1 (en) * | 2014-02-07 | 2017-05-15 | Tokvam As | Vehicle suspension for work tools |
| US10053826B1 (en) | 2014-12-12 | 2018-08-21 | Alamo Group Inc. | Wing plow apparatus |
| US10196790B1 (en) | 2014-12-12 | 2019-02-05 | Alamo Group Inc. | Wing plow apparatus |
| US10480141B1 (en) | 2014-12-12 | 2019-11-19 | Alamo Group Inc. | Wing plow apparatus |
| EP3040481A1 (en) * | 2014-12-29 | 2016-07-06 | Caterpillar Inc. | Support frame for adjustable blade assembly |
| GB2545319A (en) * | 2015-12-13 | 2017-06-14 | Pearson Eng Ltd | A mountable vehicle implement |
| GB2556135A (en) * | 2015-12-13 | 2018-05-23 | Pearson Eng Ltd | A mountable vehicle implement |
| GB2545319B (en) * | 2015-12-13 | 2018-07-18 | Pearson Eng Ltd | A mountable vehicle implement |
| GB2556135B (en) * | 2015-12-13 | 2020-03-11 | Pearson Eng Ltd | A mountable vehicle implement |
| WO2019232592A1 (en) * | 2018-06-08 | 2019-12-12 | K Factor Consulting Pty Ltd | Improved trasher arrangement and parallelogram mounting system |
| US20210251127A1 (en) * | 2018-06-08 | 2021-08-19 | K Factor Consulting Pty Ltd | Improved trasher arrangement and parallelogram mounting system |
| AU2019280256B2 (en) * | 2018-06-08 | 2021-12-02 | K Factor Consulting Pty Ltd | Improved trasher arrangement and parallelogram mounting system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8505955D0 (en) | 1985-04-11 |
| GB8604049D0 (en) | 1986-03-26 |
| GB2172037B (en) | 1987-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19940219 |