WO1988002981A1 - Rotor for a rotary cultivator - Google Patents

Rotor for a rotary cultivator Download PDF

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Publication number
WO1988002981A1
WO1988002981A1 PCT/SE1987/000499 SE8700499W WO8802981A1 WO 1988002981 A1 WO1988002981 A1 WO 1988002981A1 SE 8700499 W SE8700499 W SE 8700499W WO 8802981 A1 WO8802981 A1 WO 8802981A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
rotor shaft
shaft
hub
rotary cultivator
Prior art date
Application number
PCT/SE1987/000499
Other languages
French (fr)
Inventor
Stig Andersson
Original Assignee
Stig Andersson
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
Application filed by Stig Andersson filed Critical Stig Andersson
Publication of WO1988002981A1 publication Critical patent/WO1988002981A1/en
Priority to NO882797A priority Critical patent/NO882797D0/en
Priority to DK358188A priority patent/DK358188A/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
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/10—Structural or functional features of the tools ; Theoretical aspects of the cutting action
    • A01B33/103—Structural or functional features of the tools ; Theoretical aspects of the cutting action the rotating shaft being oriented horizontally
    • 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
    • A01B1/00—Hand tools
    • A01B1/06—Hoes; Hand cultivators
    • A01B1/065—Hoes; Hand cultivators powered
    • 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
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/02—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs with tools on horizontal shaft transverse to direction of travel
    • A01B33/027—Operator supported tools, e.g. using a harness for supporting the tool or power unit

Definitions

  • the present invention concerns a rotor for a rotary cultivator including a mainly horizontal axis of rotation, which is arranged extending mainly in a right angle to the travelling direction of the rotary cultiva ⁇ tor, and on which shaft one or a plurality of rotor sec ⁇ tions are firmly attached, by help of which a cultivation of the soil can be made.
  • a rotary cultivator differs from ploughs and harrows and the similar devices trailed behind a tractor, in showing rotating members, the rotation of which is achived by help of a separate power source by a power transmission.
  • the power source can be located on the ag ⁇ ricultural implement in question or e.g. on the tractor, to which the implement is connected. At the movement of the tractor a repeated cultivation of the soil is done, which is more intensive then the cultivation achieved by passive trailed implements.
  • hand-controlled rotary cultivators occurs, at which a power source in the shape of e.g. a combustion engine forces the rotating members to rotate and eventually to move the cultivator over the ground.
  • the purpose with the present invention is to achieve a rotor for a rotary cultivator which is not showing the drawbacks of up to now known rotors.
  • the pur ⁇ pose has been achieved with a rotor including a mainly horizontal axis of rotation, which is arranged extending in a right angle to the travelling direction of the rota- ry cultivator, and on which shaft one or a plurality of rotor sections are firmly arranged.
  • each rotor section shows a helicoidal rotor member, extending symmetrically along the rotor shaft, and which shows distances between each turn in the cylindric helical line, and that the least one end of the rotor member is firmly arranged on the rotor shaft.
  • the rotor member is formed as a cy ⁇ lindric helical spring.
  • one end of the rotor member is firmly arranged on a first hub, which in its turn is firmly arranged on the rotor shaft, whereby its.other end is freely rotating at the rotation of the rotor shaft.
  • the rotor member thereby can be right-threaded or left-threaded, whereby a right- -threaded rotor member has a anti-clockwise direction of rotation and a left-threaded rotor member has a clockwise direction of rotation regarded in the longitudinal direc ⁇ tion of itself and the rotor axis from the first hub.
  • the lenght of the rotor member in the longitudinal direc ⁇ tion of the rotor shaft can be around double the lenght of the rotor member, at which only one end of the member is arranged on the rotor shaft.
  • Two or more rotor members also can be arranged coaxially within each other in one single rotor member. Thereby the cultivation of the soil can be reached on different depths.
  • the coaxially arranged rotor members also can be given opposite helical directions, at which a more improved cultivating of the soil will be reached.
  • the rotor sections also can show members projec ⁇ ting from the helical line, e.g. in the shape of wings or knives. Thereby an increased cultivation of the soil will be reached on the same time as a movement of the soil in the longitudinal direction of the rotor shaft can be achieved.
  • the rotor members of the rotor section can be bend as a whole in a right angle to the rotor shaft and also com ⁇ pressed or stretched in the longitudinal direction of the rotor shaft.
  • the shaft will limit the bending of the rotor member in a right angel to the longitudinal direction of the shaft.
  • the diameter of the rotor shaft can be made wider or thinner, or be pro ⁇ vided with a corresponding limiting cylinder element.
  • Figure 2 shows a rotor section according to fi ⁇ gure 1 regarded from the left on figure 1 in the longitu ⁇ dinal direction of the axis of rotation.
  • Figure 3 and 4 shows an alternative embodiment of the rotor section according to the invention in views corresponding to figure 1 and 2.
  • Figure 5 shows six rotor sections according to figure 1 or 2 arranged on a common rotor shaft on a ro ⁇ tory cultivator regarded in a vertical plane and proposed to be carried by a tractor.
  • Figure 6 shows two rotor sections according to the invention on a hand-carried rotary cultivator.
  • a rotor section 1 shown on figure 1 , is consti ⁇ tuted by a cylindrical, helical rotor wire 2 extending symmetrically along a rotor shaft 3.
  • One end of the rotor wire 2 is radially bent in a right angel to the rotor shaft 3 and arranged in a first cylindrical hub 4.1, which is provided with a bore 5 extending radially, in which the end of the rotor wire 2 is fixed by help of a first locking screw 6, extending in a right angle to the end of the rotor wire 2 in a first threaded bore in the hub 4.1.
  • the other end of the rotor wire 2 also is bent radially, in a right angle to the rotor shaft 3 and ar ⁇ ranged in a second cylindrical hub 4.2, provided with a radial bore 5, in which the second end of the rotor wire 2 is fixed by help of a first locking screw 6 as in the first hub 4.1.
  • the first hub 4.1 further is fixed in a desired position on the rotor shaft 3 by help of a second locking screw 7, extending in a right angle to the rotor shaft 3 in a second threaded bore in the hub 4.1.
  • the se ⁇ cond hub 4.2 is movable in the lenghts direction of the rotor shaft 3 as well as around the same.
  • the ro ⁇ tor wire 2 can be turned ⁇ round the rotor shaft 3, as well as compressed in a direction to the first hub 4.1, or stretched in a direction from this hub.
  • the direction of rotation of the rotor section 1 is shown by a first arrow A on figure 1
  • its travelling direction over the ground is shown by a second arrow B.
  • FIG. 1 An alternative embodiment of the rotor section 1 is shown on figure 2.
  • the rotor section 1 is consti ⁇ tuted by a cylindrical, helical rotor strip 8, extending symmectrically along the rotor shaft 3.
  • the one end of the rotor strip 8 is turned 90° around its longitudinal direction and bent radially, in a right angel to the ro ⁇ tor shaft 3.
  • the rotor shaft 3 carries a first cylindrical hub 4.1, on which the radial part of the rotor strip 8 is arranged by help of a moun ⁇ ting screw 9, extending through a part of the rotor strip 8 which is in contact with the perifery of the hub 4.1.
  • the other end of the rotor strip 8 also is bent radially and arranged on a second hub 4.2, which is freely running around and along the rotor shaft 3 as on figure 1.
  • the hub 4.1 is fixed to the rotor shaft 3 by help of a second locking screw 7 as in the first embodiment on figure 1.
  • More rotor sections according to figure 1 or 2 can be put together along the same rotor shaft 3 to form a rotary cultivator as shown on figure 5.
  • the rotor shaft 3 is carried by a frame 10, which is proposed to be carried by a tractor, not shown on the figure, in a conventional way with a so called three-point bracket by two bars 11 , which are tur- neable mounted on the tractor on its two lower brackets, and by a pulling bar 12, mounted to a hydraulic device on the tractor.
  • the frame 10 also carries a centrally ar ⁇ ranged gear 13, which partly is connected by a conven ⁇ tional power outlet on the tractor, not shown on the figure, and which partly is provided with two driving shafts 14, each extending to a power transmission 15 at the ends of the frame 10.
  • the rotor shaft 3 with the ro ⁇ tor sections 1 is connected between the two power trans ⁇ missions 15.
  • a supporting wheel 16 also is arranged at each end of the frame 10. The supporting wheels 16 are vertically adjustable depending on the desired working depth.
  • two rotor sections 1.1, 1.2 are arranged at one end each of a rotor shaft 3.
  • the two rotor sections 1.1, 1.2 constitute , mirror pictures of each other, which means that the first rotor section 1.1, located on the left side on figure 6, shows a left- -threaded rotor wire 2, and that the second rotor section 1.2 shows a right-threaded rotor wire 2 regarded in the longitudinal direction of the rotor shaft 3 from the left on the figure.
  • the two rotor sections 1.1, 1.2 show a first hub 4.1 on which the one end of the rotor wire 2 is arranged.
  • the second end of the rotor wire 2 is freely rotating at the rotation of the rotor shaft 3.
  • the rotor shaft 3 extends in bearings through a gear 17, which also is connected to a power source 18, in the shape of a hand-drilling tool, by a driving shaft 19 extending in a right angel to the rotor shaft 3.
  • the driving shaft 19 is carried in the casing of the gear 17 at its one end and mounted in a chuck 20 on the hand-drilling machine 18 at its other end.
  • the gear 17 as well as the hand-drilling machine are connected to each end of a cylindrical pipe handle 21, which shows an aperture 22, at a position at which the chuck 20 of the hand-drilling machine 18 is located, through which a tool can be inserted for locking or releasing the chuck 20.
  • the rotor sections 1.1, 1.2 are covered to unintentional contact by a casing 23, which is removeable arranged on a pipe handle 21.

Abstract

Rotor for a rotary cultivator including a mainly horizontal rotor shaft (3), which is arranged extending mainly in a right angle to the travelling direction of the rotary cultivator, and on which one or several rotor sections (1) are firmly arranged, at which each rotor section (1) shows a helical rotor member (2, 8) which extends symmetrically along the rotor shaft (3), and which shows distances between each turn in the cylindrical spiral, and at least the one end of the rotor member (2, 8) is firmly arranged on the rotor shaft (3). Preferably the rotor member (2, 8) is shaped as a cylindric helical spring, the one end of which is firmly arranged on a first hub (4.1), which in its turn is firmly arranged on the rotor shaft (3), and the other end of which is freely rotating at the rotation of the rotor shaft (3).

Description

ROTOR FOR A ROTARY CULTIVATOR
TECHNICAL AREA
The present invention concerns a rotor for a rotary cultivator including a mainly horizontal axis of rotation, which is arranged extending mainly in a right angle to the travelling direction of the rotary cultiva¬ tor, and on which shaft one or a plurality of rotor sec¬ tions are firmly attached, by help of which a cultivation of the soil can be made. BACKGROUND TECHNICS
A rotary cultivator differs from ploughs and harrows and the similar devices trailed behind a tractor, in showing rotating members, the rotation of which is achived by help of a separate power source by a power transmission. The power source can be located on the ag¬ ricultural implement in question or e.g. on the tractor, to which the implement is connected. At the movement of the tractor a repeated cultivation of the soil is done, which is more intensive then the cultivation achieved by passive trailed implements. Also hand-controlled rotary cultivators occurs, at which a power source in the shape of e.g. a combustion engine forces the rotating members to rotate and eventually to move the cultivator over the ground.
Up to now known rotary cultivators show rotor sections which are provided with rotatin members consti¬ tuted by spikes or wings, which at the rotation of the rotor shaft are forced to cultivate the soil. These spi- kes or wings are firmly connected to the rotor shaft and can easily be damaged when hitting stones or the similar. Another drawback whith the up to now known rotor sections is that the rotor members of these sections in some si¬ tuations will stick with parts of plants causing an de- creasing soil-cultivating effect. The rotory speed of these rotor sections must be limited regarding the risk for damages when hitting stones and other hard objects. At a manually controlled rotary cultivator such a situa¬ tion even can tilt the rotary cultivator. DESCRIPTION OF THE INVENTION
The purpose with the present invention is to achieve a rotor for a rotary cultivator which is not showing the drawbacks of up to now known rotors. The pur¬ pose has been achieved with a rotor including a mainly horizontal axis of rotation, which is arranged extending in a right angle to the travelling direction of the rota- ry cultivator, and on which shaft one or a plurality of rotor sections are firmly arranged. The invention is cha¬ racterised in that each rotor section shows a helicoidal rotor member, extending symmetrically along the rotor shaft, and which shows distances between each turn in the cylindric helical line, and that the least one end of the rotor member is firmly arranged on the rotor shaft.
Preferably the rotor member is formed as a cy¬ lindric helical spring. In one embodiment of the inven¬ tion one end of the rotor member is firmly arranged on a first hub, which in its turn is firmly arranged on the rotor shaft, whereby its.other end is freely rotating at the rotation of the rotor shaft. The rotor member thereby can be right-threaded or left-threaded, whereby a right- -threaded rotor member has a anti-clockwise direction of rotation and a left-threaded rotor member has a clockwise direction of rotation regarded in the longitudinal direc¬ tion of itself and the rotor axis from the first hub. By this sticking of parts of plants on the rotor member can be avoided as, as to say, this will screw out the plant parts from the rotor member at its rotation.
In an alternative embodiment of the invention the rotor member is projecting from one end of the rotor shaft in the longitudinal direction of the same. In this embodiment the invention permits that the rotor member is allowed to spring considerably in a direction mainly in a right angle to the longitudinal direction of the rotor shaft, e.g. when hitting stones and the similar. In another alternative embodiment of the inven¬ tion one end of the rotor member is firmly arranged on a first hub, which in its turn is firmly arranged on the rotor shaft, at which its other part consitutes or is arranged on a second hub, which is moveable as well in the longitudinal direction of the rotor shaft as around the same. In this alternative embodiment of the invention the lenght of the rotor member in the longitudinal direc¬ tion of the rotor shaft can be around double the lenght of the rotor member, at which only one end of the member is arranged on the rotor shaft.
Further, one or several rotor members can be arranged on the same rotor shaft. Thereby the working width of the rotary cultivator is optional and only li- mited of the bending stress of the rotor shaft.
Two or more rotor members also can be arranged coaxially within each other in one single rotor member. Thereby the cultivation of the soil can be reached on different depths. The coaxially arranged rotor members also can be given opposite helical directions, at which a more improved cultivating of the soil will be reached.
The rotor sections also can show members projec¬ ting from the helical line, e.g. in the shape of wings or knives. Thereby an increased cultivation of the soil will be reached on the same time as a movement of the soil in the longitudinal direction of the rotor shaft can be achieved.
The rotor members of the rotor section, mainly constituted by a helical spring of steel, can be bend as a whole in a right angle to the rotor shaft and also com¬ pressed or stretched in the longitudinal direction of the rotor shaft. When the rotor shaft extends through the ro¬ tor member the shaft will limit the bending of the rotor member in a right angel to the longitudinal direction of the shaft. In order to limit this bending the diameter of the rotor shaft can be made wider or thinner, or be pro¬ vided with a corresponding limiting cylinder element. When the rotor member extends from the end of the rotor shaft a bending can be limited e.g. by help of supporting members as rolls, arranged over the rotor section and in contact with the rotor member. Up to now known rotory cultivators by there knives and the similar has been unsuitable for using as a hand tool. No risk for injuries is present whith the ro¬ tor section according to the invention, e.g. on hands and feet, why this is applicable also as an additional tool to a conventional hand drill, which thereby is connected to the rotor shaft by a gear and a driven shaft, exten¬ ding in a right angel to the rotor shaft. Such a hand- -carried rotory cultivator preferably is suitable for cultivating of the soil in flower beds and the similar. In summary a rotor section has been achieved by the invention, which permits a higher speed of rotation than up to now known rotor sections, and which practical¬ ly is proof to hitting of stones and the similar in the ground. DESCRIPTION TO FIGURES
The invention is"described below in the shape of an embodiment to the figures enclosed.
Figure 1 shows a rotor section for a rotary cul¬ tivator according to the invention regarded in a right angel to the axis of rotation of the same.
Figure 2 shows a rotor section according to fi¬ gure 1 regarded from the left on figure 1 in the longitu¬ dinal direction of the axis of rotation.
Figure 3 and 4 shows an alternative embodiment of the rotor section according to the invention in views corresponding to figure 1 and 2.
Figure 5 shows six rotor sections according to figure 1 or 2 arranged on a common rotor shaft on a ro¬ tory cultivator regarded in a vertical plane and proposed to be carried by a tractor.
Figure 6 shows two rotor sections according to the invention on a hand-carried rotary cultivator. A rotor section 1 , shown on figure 1 , is consti¬ tuted by a cylindrical, helical rotor wire 2 extending symmetrically along a rotor shaft 3. One end of the rotor wire 2 is radially bent in a right angel to the rotor shaft 3 and arranged in a first cylindrical hub 4.1, which is provided with a bore 5 extending radially, in which the end of the rotor wire 2 is fixed by help of a first locking screw 6, extending in a right angle to the end of the rotor wire 2 in a first threaded bore in the hub 4.1. The other end of the rotor wire 2 also is bent radially, in a right angle to the rotor shaft 3 and ar¬ ranged in a second cylindrical hub 4.2, provided with a radial bore 5, in which the second end of the rotor wire 2 is fixed by help of a first locking screw 6 as in the first hub 4.1. The first hub 4.1 further is fixed in a desired position on the rotor shaft 3 by help of a second locking screw 7, extending in a right angle to the rotor shaft 3 in a second threaded bore in the hub 4.1. The se¬ cond hub 4.2 is movable in the lenghts direction of the rotor shaft 3 as well as around the same. Thereby the ro¬ tor wire 2 can be turned ■ round the rotor shaft 3, as well as compressed in a direction to the first hub 4.1, or stretched in a direction from this hub. The direction of rotation of the rotor section 1 is shown by a first arrow A on figure 1 , and its travelling direction over the ground is shown by a second arrow B.
An alternative embodiment of the rotor section 1 is shown on figure 2. Here the rotor section 1 is consti¬ tuted by a cylindrical, helical rotor strip 8, extending symmectrically along the rotor shaft 3. The one end of the rotor strip 8 is turned 90° around its longitudinal direction and bent radially, in a right angel to the ro¬ tor shaft 3. As in the first embodiment the rotor shaft 3 carries a first cylindrical hub 4.1, on which the radial part of the rotor strip 8 is arranged by help of a moun¬ ting screw 9, extending through a part of the rotor strip 8 which is in contact with the perifery of the hub 4.1. The other end of the rotor strip 8 also is bent radially and arranged on a second hub 4.2, which is freely running around and along the rotor shaft 3 as on figure 1. The hub 4.1 is fixed to the rotor shaft 3 by help of a second locking screw 7 as in the first embodiment on figure 1.
More rotor sections according to figure 1 or 2 can be put together along the same rotor shaft 3 to form a rotary cultivator as shown on figure 5. In this embodi¬ ment of the invention the rotor shaft 3 is carried by a frame 10, which is proposed to be carried by a tractor, not shown on the figure, in a conventional way with a so called three-point bracket by two bars 11 , which are tur- neable mounted on the tractor on its two lower brackets, and by a pulling bar 12, mounted to a hydraulic device on the tractor. The frame 10 also carries a centrally ar¬ ranged gear 13, which partly is connected by a conven¬ tional power outlet on the tractor, not shown on the figure, and which partly is provided with two driving shafts 14, each extending to a power transmission 15 at the ends of the frame 10. The rotor shaft 3 with the ro¬ tor sections 1 is connected between the two power trans¬ missions 15. A supporting wheel 16 also is arranged at each end of the frame 10. The supporting wheels 16 are vertically adjustable depending on the desired working depth.
In another alternative embodiment of the inven¬ tion according to figure 6, two rotor sections 1.1, 1.2 are arranged at one end each of a rotor shaft 3. The two rotor sections 1.1, 1.2 constitute,mirror pictures of each other, which means that the first rotor section 1.1, located on the left side on figure 6, shows a left- -threaded rotor wire 2, and that the second rotor section 1.2 shows a right-threaded rotor wire 2 regarded in the longitudinal direction of the rotor shaft 3 from the left on the figure. The two rotor sections 1.1, 1.2 show a first hub 4.1 on which the one end of the rotor wire 2 is arranged. The second end of the rotor wire 2 is freely rotating at the rotation of the rotor shaft 3. The rotor shaft 3 extends in bearings through a gear 17, which also is connected to a power source 18, in the shape of a hand-drilling tool, by a driving shaft 19 extending in a right angel to the rotor shaft 3. The driving shaft 19 is carried in the casing of the gear 17 at its one end and mounted in a chuck 20 on the hand-drilling machine 18 at its other end. The gear 17 as well as the hand-drilling machine are connected to each end of a cylindrical pipe handle 21, which shows an aperture 22, at a position at which the chuck 20 of the hand-drilling machine 18 is located, through which a tool can be inserted for locking or releasing the chuck 20. The rotor sections 1.1, 1.2 are covered to unintentional contact by a casing 23, which is removeable arranged on a pipe handle 21.

Claims

PATENT CLAIMS
1. Rotor for a rotary cultivator including a mainly horizontal axis of rotation, which is arranged extending mainly in a right angel to the travelling di- rection of the rotary cultivator, and on which one or a plurality of rotor sections (1) are firmly arranged, at which each rotor section (1) shows a helicoidal rotor member (2), extending symmetrically along the axis of rotation, c h a r a c t e r i s e d in that the rotor member (2) is threadlike, at which its one end is firmly arranged on a first hub (4.1), which in its turn is firm¬ ly arranged on a rotor shaft (3), and that its other end is freely rotating at the rotation of the rotor shaft (3).
2. Rotor according to claim 1, c h a r a c - t e r i s e d in that the rotor member (2) is projecting from the end of the rotor shaft (3) in the longitudinal direction of the same.
3. Rotor according to claim 1-2, c h a r a c - t e r i s e d in that a first rotor member (2) is exten¬ ding from a first hub (4..1), which is firmly arranged at the one end of the rotor shaft (3), and that a second rotor member (2) is extending from a second hub (4.2), which is firmly arranged at the other end of the rotor shaft (3) in a direction which is oposit to the direction of the first rotor member (2).
4. Rotor according to claim 1-3 c h a r a c ¬ t e r i s e d in that each rotor member (2) can be right-threaded or left-threaded, at which a right- -threaded rotor member (2) is anti-clockwise rotating and a left-threaded rotor member (2) is clockwise rotating when regarded in the longitudinal direction of the rotor shaft (3) from each hub (4.1, 4.2).
PCT/SE1987/000499 1986-10-31 1987-10-27 Rotor for a rotary cultivator WO1988002981A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO882797A NO882797D0 (en) 1986-10-31 1988-06-23 ROTOR FOR AN EARTH MILLER.
DK358188A DK358188A (en) 1986-10-31 1988-06-29 ROTOR FOR AN EARTH CRUSHER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8604647A SE459837B (en) 1986-10-31 1986-10-31 ROTOR FOR EARTH SEASON
SE8604647-1 1986-10-31

Publications (1)

Publication Number Publication Date
WO1988002981A1 true WO1988002981A1 (en) 1988-05-05

Family

ID=20366134

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000499 WO1988002981A1 (en) 1986-10-31 1987-10-27 Rotor for a rotary cultivator

Country Status (3)

Country Link
AU (1) AU8235887A (en)
SE (1) SE459837B (en)
WO (1) WO1988002981A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990006672A1 (en) * 1988-12-15 1990-06-28 Stig Andersson Rotary cultivator tool
GB2336088A (en) * 1998-04-06 1999-10-13 Kevin James Barrington Electrical mini-cultivator
RU2477034C1 (en) * 2011-11-18 2013-03-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновская государственная сельскохозяйственная академия" Cultivator tool
RU2477593C1 (en) * 2011-11-09 2013-03-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновская государственная сельскохозяйственная академия" Cultivator tool
WO2014117215A1 (en) * 2013-01-31 2014-08-07 Rfm Ag Pty Ltd An agricultural wheel
RU2613428C1 (en) * 2015-10-05 2017-03-16 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Дальневосточный Государственный Аграрный Университет" Screw hillers
RU201215U1 (en) * 2020-03-12 2020-12-03 Алексей Александрович Кошкарев Spiral cultivator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US701512A (en) * 1902-01-07 1902-06-03 John Scott Rotary cultivator.
US2816495A (en) * 1954-12-13 1957-12-17 Lester M Brooks Ground cultivator
US2830520A (en) * 1954-01-07 1958-04-15 Floyd P Mixon Tiller
FR1421841A (en) * 1964-01-18 1965-12-17 M P M Sicilia S P A Tool with helical elements adaptable to agricultural tractors, tillers, and forming one or two parallel earth lifts
SU938766A1 (en) * 1980-02-07 1982-06-30 Казанский Сельскохозяйственный Институт Им. Горького "Госкомсельхозтехника" Тасср Rotary ripper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US701512A (en) * 1902-01-07 1902-06-03 John Scott Rotary cultivator.
US2830520A (en) * 1954-01-07 1958-04-15 Floyd P Mixon Tiller
US2816495A (en) * 1954-12-13 1957-12-17 Lester M Brooks Ground cultivator
FR1421841A (en) * 1964-01-18 1965-12-17 M P M Sicilia S P A Tool with helical elements adaptable to agricultural tractors, tillers, and forming one or two parallel earth lifts
SU938766A1 (en) * 1980-02-07 1982-06-30 Казанский Сельскохозяйственный Институт Им. Горького "Госкомсельхозтехника" Тасср Rotary ripper

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. G0439 K/18; & SU,A,938766. *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990006672A1 (en) * 1988-12-15 1990-06-28 Stig Andersson Rotary cultivator tool
GB2336088A (en) * 1998-04-06 1999-10-13 Kevin James Barrington Electrical mini-cultivator
RU2477593C1 (en) * 2011-11-09 2013-03-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновская государственная сельскохозяйственная академия" Cultivator tool
RU2477034C1 (en) * 2011-11-18 2013-03-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ульяновская государственная сельскохозяйственная академия" Cultivator tool
WO2014117215A1 (en) * 2013-01-31 2014-08-07 Rfm Ag Pty Ltd An agricultural wheel
AU2014213004B2 (en) * 2013-01-31 2017-06-22 Ryan Nt International Pty Ltd An agricultural wheel
EA030527B1 (en) * 2013-01-31 2018-08-31 Рфм Аг Пти Лтд Agricultural wheel
US10455752B2 (en) 2013-01-31 2019-10-29 Rfm Ag Pty Ltd Agricultural wheel
RU2613428C1 (en) * 2015-10-05 2017-03-16 Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования "Дальневосточный Государственный Аграрный Университет" Screw hillers
RU201215U1 (en) * 2020-03-12 2020-12-03 Алексей Александрович Кошкарев Spiral cultivator

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SE8604647L (en) 1988-05-01
AU8235887A (en) 1988-05-25
SE8604647D0 (en) 1986-10-31
SE459837B (en) 1989-08-14

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