DK158807B - MARKETS FOR AN AGRICULTURAL MACHINE - Google Patents

MARKETS FOR AN AGRICULTURAL MACHINE Download PDF

Info

Publication number
DK158807B
DK158807B DK056286A DK56286A DK158807B DK 158807 B DK158807 B DK 158807B DK 056286 A DK056286 A DK 056286A DK 56286 A DK56286 A DK 56286A DK 158807 B DK158807 B DK 158807B
Authority
DK
Denmark
Prior art keywords
disc
marker
protective element
arm
cursor
Prior art date
Application number
DK056286A
Other languages
Danish (da)
Other versions
DK158807C (en
DK56286A (en
DK56286D0 (en
Inventor
Bernd Gattermann
Original Assignee
Amazonen Werke Dreyer H
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6262414&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DK158807(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Amazonen Werke Dreyer H filed Critical Amazonen Werke Dreyer H
Publication of DK56286D0 publication Critical patent/DK56286D0/en
Publication of DK56286A publication Critical patent/DK56286A/en
Publication of DK158807B publication Critical patent/DK158807B/en
Application granted granted Critical
Publication of DK158807C publication Critical patent/DK158807C/en

Links

Classifications

    • 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
    • A01B69/00—Steering of agricultural machines or implements; Guiding agricultural machines or implements on a desired track
    • A01B69/02—Ridge-marking or like devices; Checkrow wires; Accessories therefor
    • A01B69/024—Ridge-marking or like devices; Checkrow wires; Accessories therefor adapted to cut and form a ridge or forrow in the soil surface, e.g. with a disc

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Guiding Agricultural Machines (AREA)
  • Soil Working Implements (AREA)
  • Catching Or Destruction (AREA)

Abstract

1. Track marker (3) for an agricultural machine (1), which is mounted on the frame (2) of the machine by means of a pivot joint (4) and is pivotable in a vertical plane about a pivotal axle (5), extending at least approximately in the direction of travel, the track marker including an extension arm (8) and a disc (9), which is rotatably mounted on the end of the arm, characterised in that a protective means (12, 13, 21) is disposed in front of the arm (8) when viewed with respect to the direction of travel (11), and the disc (9) protrudes forwardly when viewed with respect to the direction of travel (11).

Description

DK 158807 BDK 158807 B

iin

Opfindelsen angår en markør af den art, som er angivet i krav 1's indledning.The invention relates to a marker of the kind set forth in the preamble of claim 1.

Fra tysk offentliggørelsesskrift nr. 32 42 932 kendes en mar-5 kør af nævnte art. Denne markør er ved hjælp af et kardanled hængslet til landbrugsmaskinens ramme. Yderligere er der på markøren anbragt et spændeelement, som holder markøren i dennes forud fastlagte driftsstilling. På grund af dens hængsling og fastgørelse, kan markøren, når den støder på forhindringer, 10 undvige skråt bagud og opad.German Patent Publication No. 32 42 932 discloses a mar-5 driver of the said kind. This marker is hinged to the frame of the agricultural machine by means of a cardan joint. Further, a clamping element is provided on the marker which holds the cursor in its predetermined operating position. Due to its hinging and attachment, when it encounters obstacles, the cursor can dodge backwards and upwards.

Ulempen ved denne kendte markør er især de relative store fremstillingsomkostninger, hvorfor denne udformning er meget dyr. Yderligere vil markøren blive beskadiget, når forhindrin-15 gen, som markøren støder mod, rammer ovenover omdrejningsaksen for markørens skive.' Da markørens skive i disse tilfælde vil køre ned under forhindringen, kan markøren ikke undvige skråt bagud og opad. Derfor vil der uundgåeligt opstå skader på markøren.The disadvantage of this known marker is in particular the relatively large manufacturing costs, which is why this design is very expensive. Further, the cursor will be damaged when the obstacle encountered by the cursor strikes above the axis of rotation of the cursor disc. ' Since in these cases the cursor's disc will run down the obstacle, the cursor cannot dodge backwards and upwards. Therefore, damage to the cursor will inevitably occur.

2020

Formålet med opfindelsen er, at anvise en simpel og billig beskyttelsesmulighed for markører.The object of the invention is to provide a simple and inexpensive protection option for markers.

Til opnåelse af dette formål er markøren ifølge opfindelsen 25 ejendommelig ved de i krav 1 anførte kendetegnende træk. Herved opnåes, at markøren ved hjælp af beskyttelseselementet bliver hævet op over den aktuelle forhindring. Beskyttelseselementet kommer foran markørens skive i berøring med forhindringen. Beskyttelseselementet virker overfor skiven, og ovenover den-30 nes omdrejningsakse, som en mede, hvorved skiven også bliver hævet op over forhindringer, som ellers ville ramme markørens skive ovenover skivens omdrejningsakse. Ved en passende udformning af beskyttelseselementet, kan man fastlægge op til hvilke størrelser af forhindringer, beskyttelseselementet skal 35 være virksomt, således at markøren så vidt muligt ubeskadiget kan undvige alle forhindringer. Det er muligt at anbringe flere beskyttelseselementer ovenover hinanden. Ligeledes kan der 2To achieve this purpose, the marker according to the invention 25 is characterized by the characteristic features of claim 1. This results in the cursor being raised above the current obstacle by means of the protective element. The protective element comes into contact with the obstacle in front of the marker's disc. The protective element acts opposite the disc and above its axis of rotation, as a means whereby the disc is also raised above obstacles which would otherwise hit the disc of the cursor above the axis of rotation of the disc. By an appropriate design of the protective element, it is possible to determine up to what sizes of obstacles, the protective element must be effective, so that the cursor can avoid all obstacles as far as possible undamaged. It is possible to place several protective elements on top of each other. Similarly, 2

DK 158807 BDK 158807 B

benyttes forskelligt udformede beskyttelseselementer, som i afhængighed af den aktuelle brugssituation ved hjælp af hur-tigspændeanordninger, kan fastgøres til markørens arm henholdsvis udskiftes.variously designed protective elements are used which, depending on the current use situation by means of quick-release devices, can be attached to the cursor arm or replaced.

55

Ifølge opfindelsen kan beskyttelseselementets underste kant i markørens driftstilling tilnærmelsesvis befinde sig under en vandret gennem skivens omdrejningsakse forløbende linie. Herved sikres det, at skiven i ethvert tilfælde bliver ført op 10 over forhindringer, såsom store sten, som ligger på jordoverfladen, tværfurer på jordoverfladen, eller fordybninger ved særlig høje plovfurer. Beskyttelseselementet forhindrer, at skiven ovenover dennes omdrejningsakse kommer i berøring med forhindringer.According to the invention, the lower edge of the protective element in the cursor operating position can be approximately below a horizontal line extending through the rotational axis of the disc. This ensures that the disk is in any case raised 10 over obstacles, such as large stones lying on the ground surface, cross-grooves on the ground surface, or recesses at particularly high plow furrows. The protective element prevents the disk above its axis of rotation from coming into contact with obstacles.

1515

Desuden kan ifølge opfindelsen beskyttelseselementet have en i markørens driftstilling fra skiven skråt opad og skråt fremad i retning mod drejeleddet henholdsvis maskinens midte forløbende kant eller mede. Herved opnåes en beskyttelse af hele 20 markøren inklusive armen, idet beskyttelseselementet tillige i det mindste delvis befinder sig foran armen, og derved også hæver armen op over forhindringen. En særlig god beskyttelse af skiven opnåes ifølge opfindelsen ved, at beskyttelseselementet delvis omslutter skivens forside.In addition, according to the invention, the protective element may have an upward and inclined forward direction in the cursor operating position from the disc towards the pivot joint and the center extending or middle of the machine, respectively. This provides protection for the entire marker including the arm, the protective element also being at least partially in front of the arm, thereby also raising the arm above the obstacle. Particularly good protection of the disc is achieved according to the invention in that the protective element partially encloses the front of the disc.

2525

Yderligere udførelsesformer for markøren fremgår af de øvrige underkav.Further embodiments of the cursor are set forth in the other subclaims.

Opfindelsen forklares nedenfor under henvisning til tegningen, 30 hvorThe invention is explained below with reference to the drawing, wherein

Fig. 1 viser en såmaskine med en markør ifølge opfindelsen set forfra, 35 Fig. 2 i større målestok, og set forfra, den venstre markør,FIG. 1 is a front view of a drill with a marker according to the invention; FIG. 2 on a larger scale, and seen from the front, the left marker,

Fig. 3 samme set ovenfra, 3FIG. 3 same view from above, 3

DK 158807BDK 158807B

Fig. 4 samme set fra venstre side,FIG. 4 the same from the left side,

Fig. 5 en anden udførelsesform for den venstre markør set 5 forfra,FIG. 5 is a front view of another embodiment of the left marker,

Fig. 6 samme set ovenfra, og Fig. 7 samme set fra venstre side.FIG. 6 is a top view, and FIG. 7 the same from the left.

10 På såmaskinen 1, er der på begge rammens 2 ydre sider anbragt en markør 3, som ved hjælp af et drejeled 4, kan svinge i et lodret plan. Markøren 3 kan herved hæves og sænkes ved en drejning omkring i køreretningen, og gennem hver af drejeled-15 dene 4 forløbende svingakser 5. En markøro.mskifter 6 er an bragt på såmaskinens ramme 2. Mellem markørerne 3 og markøromskifteren 6, er der anbragt kæder 7, ved hjælp af hvilke, markørerne 3 ved markenderne skiftevis kan hæves i ikke-drifts-stillingen, og sænkes i driftsstillingen.10 On the seed drill 1, on the outer sides of both frame 2 is arranged a marker 3 which can swing in a vertical plane by means of a swivel joint 4. The cursor 3 can thereby be raised and lowered by a rotation about in the direction of travel, and through each axis of the rotary joints 4 rotating axes 5. A marker switch 6 is placed on the frame of the seed drill 2. Between the markers 3 and the cursor switch 6 are arranged. chains 7, by means of which the markers 3 at the markets can be alternately raised in the non-operating position and lowered in the operating position.

2020

Hver markør 3 er forsynet med en arm 8 og en skive 9, som ved enden 10 af armen 8, er frit drejeligt lejret ved hjælp af et leje. Set i køreretningen 11, er der foran markørens 3 arm 8 anbragt et beskyttelseselement 12. Dette beskyttelseselement 25 12, der er udformet som en bøjle 13, rager set i køreretningen 11 ud foran skiven 9. Bøjlens 13 underste kant 14 befinder sig i markørens 3 driftsstilling, nedenunder en vandret gennem skivens omdrejningsakse 15 forløbende linie 16. Yderligere forløber bøjlens 13 forreste kant i markørens 3 driftsstiΠing 30 fra skiven 9 skråt opad og skråt fremad i retningen mod dreje-leddet 4 henholdsvis maskinens midte. Denne forreste kant 14 virker i praksis som en mede, når bøjlen 13 støder på en forhindring. 1 Når markøren 3 støder på en forhindring 19 på marken 18, hæver bøjlen 13 markøren.hen over forhindringen 19 henholdsvis hæver skiven 9 så meget, at den nedre skrå halvdel 20 af skiven 9Each marker 3 is provided with an arm 8 and a disc 9 which, at the end 10 of the arm 8, are freely pivotally supported by a bearing. Seen in the driving direction 11, a guard element 12 is arranged in front of the arm 8 of the marker 3. This protective element 25 12, which is formed as a hanger 13, protrudes in the driving direction 11 out in front of the disc 9. The lower edge 14 of the hanger 13 is in the cursor 3. operating position, below which is a horizontal line extending through the rotary axis 15 of the disc 15. Further, the leading edge of the bracket 13 extends in the operating position 30 of the marker 3 from the disc 9 inclined upwards and inclined forwards in the direction of the pivot joint 4 and the center of the machine respectively. In practice, this leading edge 14 acts as a joint when the hoop 13 encounters an obstacle. 1 When the cursor 3 encounters an obstacle 19 on the field 18, the hoop 13 raises the cursor. Over the obstacle 19, respectively, the disc 9 raises so much that the lower inclined half 20 of the disc 9

DK 158807BDK 158807B

4 støder mod forhindringen 19, og skiven 9 derved ubeskadiget kan rulle hen over forhindringen 19. Beskyttelsesbøjlens 13 skrå forreste kant 17 forhindrer ligeledes, at skiven 9 ovenover skivens midte eller skivens omdrejningsakse 15 kommer i 5 berøring med forhindri ngen 19. Under normal drift er bøjlen 13 ikke i berøring med marken, men befinder sig i en lille afstand A fra jordoverfladen 18. Hermed forhindres det, at bøjlen 13 danner jordvolde foran sig.4 abuts the obstacle 19 and the disc 9 can thereby undamaged roll over the obstacle 19. The inclined leading edge 17 of the protective bracket 13 also prevents the disc 9 above the center of the disc or the axis of rotation 15 from contacting the obstacle 19. During normal operation, the shackle 13 is not in contact with the field, but is at a small distance A from the ground surface 18. This prevents the shackle 13 from forming ground walls in front of it.

10 Den i fig. 5 til 7 viste udførelsesform for bøjlen 21, er udformet på en lidt anden måde end bøjlen 13. Den som beskyttelseselement udformede bøjle 21, er fastgjort til markørens 3 arm 8. Bøjlen 21 rager set i køreretningen 11 ud foran skiven 9. Den underste kant 22 af bøjlen befinder sig i markørens 15 dr iftssti11ing nedenunder den vandret gennem skivens omdrej ningsakse 15 forløbende linie 16. Yderligere forløber den forreste kant 23 af bøjlen 21 i markørens 3 driftssti 11 ing fra skiven 9 skråt opad og skråt fremad i retning mod drejeleddet 4 henholdsvis maskinens midte. Denne forreste kant 23 virker i 20 praksis som en mede, når bøjlen 21 støder på en forhindring. Bøjlen 21 omslutter delvis skivens 9 forside 24 og rager i udadgående retning et kort stykke 25 ind over skiven 9.10 The embodiment of FIG. 5 to 7, the bracket 21 is configured in a slightly different way from the bracket 13. The bracket 21, which is designed as a protective element, is attached to the arm 8 of the marker 3. The bracket 21 extends in the direction of travel 11 in front of the disc 9. The lower edge 22 of the bracket is in the position of the cursor 15 below the horizontal line extending horizontally through the rotary axis 15 of the disc 15. Further, the leading edge 23 of the bracket 21 in the operating path 11 of the cursor 3 extends upwardly and inclined forwardly towards the pivot joint 4. respectively the center of the machine. In practice, this leading edge 23 acts as a joint when the hoop 21 encounters an obstacle. The bracket 21 partially encloses the front face 24 of the disc 9 and projects outwardly a short distance 25 over the disc 9.

Bøjlen 21 fungerer på følgende måde: 25 Når såmaskinen benyttes på -plane marker, har bøjlen 21 ikke berøring med jorden. Befinder der sig imidlertid på jordoverfladen 18 forhindringer 19, i form af store sten eller grove, store knolde eller forhindringer i form af dybe tværfurer el-30 ler dybe furer i form af grove plovfurer, bliver skiven 9 henholdsvis armen 8 hævet op over disse forhindringer 19, inden skiven 9 ovenover dennes omdrejningsakse 15 kan komme i berøring med forhindringen. Den forreste skrå kant 23 af bøjlen 21 løber opad på forhindringen 19. Forhindringen 19 glider forbi 35 kanten 23, og hæver på grund af kantens 23 skrå forløb skriven 9 henholdsvis markørens 3 arm 8. Skiven 9 bliver ved hjælp af bøjlen 21 ved påløbet på forhindringen 19 hævet så meget, atThe bracket 21 works as follows: 25 When the seed drill is used on flat planes, the bracket 21 does not touch the ground. However, if there are obstacles 19 on the ground surface 18, in the form of large stones or coarse, large tubers or obstacles in the form of deep cross furrows or deep furrows in the form of coarse plow furrows, the disc 9 and arm 8 are raised above these obstacles, respectively. 19 before the disc 9 above its axis of rotation 15 can come into contact with the obstacle. The front oblique edge 23 of the hoop 21 runs upwardly on the obstacle 19. The obstacle 19 slides past the 35 edge 23 and, due to the oblique course of the edge 23, raises the writing 9 and the arm 3 of the cursor 8, respectively. the obstacle 19 raised so much that

Claims (8)

1. Markør (3) til en landbrugsmaskine (19, hvilken markør (3) er fastgjort til maskinens ramme (2) ved hjælp af et drejeled (4), og omkring en tilnærmelsesvis i køreretningen forløbende 20 svingakse (5) kan svinge i et lodret plan, samt er forsynet med en arm (8) og en for enden af denne arm drejeligt lejret skive (9), kendetegnet ved, at der set i køreret-ningen (11), foran armen (8), er anbragt et beskyttelseselement (12, 13, 21), som ligeledes set i køreretningen (11), 25 rager ud foran skiven (9).A marker (3) for an agricultural machine (19), which marker (3) is attached to the frame (2) of the machine by means of a swivel joint (4), and about a approximately 20 pivot axis (5) extending in a direction of rotation vertical plane, and is provided with an arm (8) and a disc (9) pivotally mounted at the end of this arm, characterized in that a protective element is arranged in front of the arm (8) in the direction of travel (11). (12, 13, 21), also seen in the direction of travel (11), 25 protrude in front of the washer (9). 2. Markør ifølge krav 1, kendetegnet ved, at beskyttelseselementets (12, 13, 21) underste kant (14, 22) i markørens (3) driftsstilling, tilnærmelsesvis befinder sig ne- 30 denfor en vandret gennem skivens omdrejningsakse (15) forløbende linie (16).Marker according to claim 1, characterized in that the lower edge (14, 22) of the protective element (12, 13, 22) in the operating position of the marker (3) is approximately below a horizontal line extending through the axis of rotation of the disc (15). (16). 3. Markør ifølge krav 1, kendetegnet ved, at be skyttelseselementet (12, 13, 21) hår en i markørens (3) drifts- 35 stilling fra skiven (9) skråt opad og skråt fremad i retning mod drejeleddet (4) henholdsvis maskinens midte forløbende kant (14, 23) eller mede. DK 158807 BMarker according to claim 1, characterized in that the protective element (12, 13, 21) hairs upwardly and inclined forwards in the operating position of the marker (3) from the disc (9) towards the pivot joint (4) and the machine respectively. center extending edge (14, 23) or co. DK 158807 B 4. Markør ifølge krav 1, kendetegnet ved, at be skyttelseselementet (12, 13, 21) har en i markørens (3) driftsstilling fra skiven (9) skråt opad forløbende mede (14, 23).The marker according to claim 1, characterized in that the protective element (12, 13, 21) has an upwardly extending median (14, 23) in the operating position of the marker (3) from the disc (9). 5. Markør ifølge krav 1, kendetegnet ved, at be skyttelseselementet (21) delvis omslutter skivens (9) forside (24).Marker according to claim 1, characterized in that the protective element (21) partially encloses the front face (24) of the disc (9). 6. Markør ifølge et eller flere af kravene 1 til 5, k e n -10 detegnet ved, at beskyttelseselementet (12) er udformet som en mede (13, 21).A marker according to one or more of claims 1 to 5, characterized in that the protective element (12) is formed as a med (13, 21). 7. Markør ifølge et eller flere af kravene 1 til 6, kendetegnet ved, at beskyttelseselementet (12) er udfor- 15 met som en bøjle (13, 21).Marker according to one or more of claims 1 to 6, characterized in that the protective element (12) is formed as a hoop (13, 21). 8. Markør ifølge krav 5, kendetegnet ved, at be skyttelseselementet (21) er fastgjort på armen (8), og udadtil rager ud over skiven (9). 20 25 30 35Marker according to claim 5, characterized in that the protective element (21) is secured to the arm (8) and extends outwardly beyond the disc (9). 20 25 30 35
DK056286A 1985-02-13 1986-02-05 MARKETS FOR AN AGRICULTURAL MACHINE DK158807C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853504906 DE3504906A1 (en) 1985-02-13 1985-02-13 TRACK MARKER FOR AN AGRICULTURAL MACHINE
DE3504906 1985-02-13

Publications (4)

Publication Number Publication Date
DK56286D0 DK56286D0 (en) 1986-02-05
DK56286A DK56286A (en) 1986-08-14
DK158807B true DK158807B (en) 1990-07-23
DK158807C DK158807C (en) 1990-12-17

Family

ID=6262414

Family Applications (1)

Application Number Title Priority Date Filing Date
DK056286A DK158807C (en) 1985-02-13 1986-02-05 MARKETS FOR AN AGRICULTURAL MACHINE

Country Status (4)

Country Link
EP (1) EP0191425B2 (en)
AT (1) ATE45461T1 (en)
DE (2) DE3504906A1 (en)
DK (1) DK158807C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721980C2 (en) * 1987-07-03 1996-05-30 Hassia Maschf Gmbh Track marker
US5195662A (en) * 1987-08-03 1993-03-23 Ted Neff Paint can spout attachment
FR2658979B1 (en) * 1990-03-02 1992-08-07 Sulky Burel Sa TRACING DEVICE FOR AGRICULTURAL MACHINE.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333429A1 (en) * 1975-12-04 1977-07-01 Drouot Michel Agricultural implement track marker - has frame with flat and concave discs mounted on normal and inclined shafts respectively
PL105334B1 (en) * 1976-03-05 1979-10-31 DEVICE FOR CONTROLLING THE MARKERS OF AGRICULTURAL MACHINES
DE3242932C2 (en) * 1982-11-20 1985-04-25 Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen Markers for an agricultural machine

Also Published As

Publication number Publication date
DK158807C (en) 1990-12-17
DK56286A (en) 1986-08-14
ATE45461T1 (en) 1989-09-15
DE3504906A1 (en) 1986-08-14
EP0191425A2 (en) 1986-08-20
EP0191425A3 (en) 1988-01-07
DK56286D0 (en) 1986-02-05
DE3664998D1 (en) 1989-09-21
EP0191425B2 (en) 1992-05-06
EP0191425B1 (en) 1989-08-16

Similar Documents

Publication Publication Date Title
US5970892A (en) Trash cleaning structure for a furrow opening device
US6223663B1 (en) Trash cleaning structure for a furrow opening device
US4059911A (en) Track filler attachment for center pivot irrigation systems
CA2207250C (en) Cultivator attachment for a skid steer tractor unit
DK158807B (en) MARKETS FOR AN AGRICULTURAL MACHINE
US6347465B1 (en) Plow blade deflector system
JP7161739B2 (en) work machine
US2711597A (en) Scraper blade mounting
JP3564448B2 (en) Coulter buffer mechanism of root crop harvester and coulter assembly provided with this buffer mechanism
JP2563044B2 (en) 5-row tractor-mounted lawn mower
CA1253729A (en) Flexible harrow with tooth-adjusting links
JP2001145401A (en) Colter buffer device in root vegetable harvester
EP1452650B1 (en) Revolving blade and mounting for small excavators
JPH04127116U (en) grass mower
JPS637707A (en) Deep plowing up-cut rotary plowing method and apparatus
JP2551784Y2 (en) Angle switching type wheel mark eraser of rice transplanter
JP7470961B2 (en) Agricultural machinery
JP2016198073A (en) Agricultural work machine
JPS6026565Y2 (en) rotary device
JP2926387B2 (en) Mower
NO152915B (en) UNIVERSALKJEL
JPH0451530Y2 (en)
JP2002233203A (en) Rotary working machine for plowing
JP3440456B2 (en) Mower and mowing adapter
WO1997030576A1 (en) Furrow-forming and earthworking equipment for inclined grounds

Legal Events

Date Code Title Description
PBP Patent lapsed