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公开(公告)号：US20240188481A1
公开(公告)日：2024-06-13
申请号：US18287695
申请日：2022-04-22
申请人： Väderstad Holding AB
发明人： Rune Rommedahl , Crister Stark , Bengt Sandberg
摘要： An output unit (21a. 21 b) for an agricultural implement (1), for feeding granular material to the ground on which the agricultural implement (1) is travelling, comprises a seed furrow-opener (2111), a depth regulator (212), for controlling a work depth for the seed furrow-opener (2111), and a material outlet (213) defining a delivery point at which the granular material leaves the material outlet (213). The material outlet (213) is moveable relative to the seed furrow-opener (2111), so that the delivery point is moveable at least vertically relative to the seed furrow-opener (2111) and has a setting device (216), for controlling or limiting a height position for the delivery point relative to the seed furrow-opener (2111).
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公开(公告)号：US20220377968A1
公开(公告)日：2022-12-01
申请号：US17771099
申请日：2020-10-21
申请人： Väderstad Holding AB
发明人： Gert Gilstring , Crister Stark , Rune Rommedahl , Per-Arne Hagby
摘要： This document discloses a row unit (2) for feeding granular material to the ground. The row unit has a seed furrow-opener, which has a seed furrow-opening arm (21) carrying a seed disc (22). The seed furrow-opening arm has a proximal portion, in which the seed furrow-opening arm is pivotable about a first geometrical axis (Rb) and a distal portion, to which the seed disc is rotatably attached. The row unit has a depth regulator, which has a depth-regulating arm (31) carrying a gauge wheel (32). The depth-regulating arm (31) is pivotable about a second geometrical axis (Ra) which is concentric with a centre of rotation for the seed disc. The row unit comprises a first adjusting device for setting the height of the gauge wheel (32) in relation to the seed disc (22). The first adjusting device comprises a lever (34), which is fixedly connected to the depth-regulating arm, a depth-regulating driver arm (36) pivotable at the first geometrical axis, and a control link (35), which connects distal portions of the lever (34) and the depth-regulating driver arm (36), so that the pivotal position of the lever is controllable by pivoting the depth-regulating driver arm. The document also discloses agricultural implements comprising such row units and methods for operating agricultural implements.
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公开(公告)号：USD896850S1
公开(公告)日：2020-09-22
申请号：US29669820
申请日：2018-11-12
申请人： Väderstad Holding AB
设计人： Crister Stark , Urban Hammarström
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4.发明申请公开(公告)号：US20190269061A1
公开(公告)日：2019-09-05
申请号：US16308508
申请日：2017-06-02
申请人： Väderstad Holding AB
发明人： Crister Stark , Urban Hammarström , Heino Esko , Dan Somlin
摘要： The document discloses a disc tool (1) for breaking up field residues, comprising a central hub portion (10), which is designed for mounting the disc in a tool holder in order to make the disc rotatable about a rotation axis (Ar), a cultivating portion (11), which is located radially outside of and adjoins the hub portion (10), and a plurality of substantially straight cutting edges (E1, E2) which are located at the periphery of the disc tool. The cultivating portion (11) has a plurality of undulations (111, 112) which, with an axial extent decreasing toward the inside, run from the cutting edges (E1, E2) to the hub portion (10). The cutting edge (LE1, E2) is designed such that 90-98% of a track formed by the cutting edge consists of straight track portions.The document further discloses an agricultural implement with such disc tools, the use of such an agricultural implement, and a method for manufacturing such a disc tool.
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公开(公告)号：US20170118901A1
公开(公告)日：2017-05-04
申请号：US15318156
申请日：2015-06-12
申请人： VÄDERSTAD HOLDING AB
发明人： Crister Stark
CPC分类号： A01B73/046 , A01B63/24 , A01B73/02 , A01B73/04 , A01B76/00
摘要： The present document discloses an agricultural implement comprising a first frame section (10), a portion (11a, 11b, 12a, 12b), which is moveable relative to the first frame section, and an actuator (15a, 15b, 16a, 16b, 215) for controlling a relative movement between the first frame section (10) and the portion (11a, 11b, 12a, 12b). The agricultural implement has a first sensor (20, 220), arranged to provide a first value corresponding to the angle of the first frame section relative to a predetermined reference plane or a predetermined reference direction, and a second sensor (21, 22), arranged to provide a second value corresponding to the angle of the portion relative to the predetermined reference plane or the predetermined reference direction. Said reference plane or reference direction is defined in relation to a direction of gravity.
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公开(公告)号：US20240306524A1
公开(公告)日：2024-09-19
申请号：US18576425
申请日：2022-07-04
申请人： Väderstad Holding AB
发明人： Bengt Sandberg , Rune Rommedahl , Crister Stark
CPC分类号： A01B49/06 , A01B63/008 , A01C5/064 , A01C5/068 , A01C7/12
摘要： An output unit for an agricultural implement, for feeding granular material to the ground over which the agricultural implement (1) is travelling, comprises a unit frame (211, 311), a seed furrow-opener (2111, 3132) supported by the unit frame, a depth regulator (212, 312) supported by the unit frame and used for controlling a work depth for the seed furrow-opener (2111, 3132), and an adjustment device for adjusting a relative height position between the depth regulator and the seed furrow-opener, such that a work depth for the seed furrow-opener is adjustable. The adjustment device is configured such that the depth regulator is adjustable relative to the seed furrow-opener between a work position, in which a lower portion of the depth regulator is located at a higher vertical level than a lower portion of the seed furrow-opener, and a field lift position, in which a lower portion of the depth regulator is located at a lower vertical level than a lower portion of the seed furrow-opener.
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公开(公告)号：US10687453B2
公开(公告)日：2020-06-23
申请号：US15742074
申请日：2016-07-05
申请人： Väderstad Holding AB
发明人： Crister Stark
摘要： This document sets out a method of adjusting an agricultural implement's orientation. The method comprises recording, while the agricultural implement is travelling, a series of orientation values corresponding to the orientation of the agricultural implement in at least one vertical plane, calculating a derived orientation value based on said series of values and, if the derived orientation value is outside a predetermined range, adjusting a mutual position relationship between at least two parts of the agricultural implement that can move relative to each other.
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公开(公告)号：US20180206387A1
公开(公告)日：2018-07-26
申请号：US15742074
申请日：2016-07-05
申请人： Väderstad Holding AB
发明人： Crister Stark
摘要： This document sets out a method of adjusting an agricultural implement's orientation. The method comprises recording, while the agricultural implement is travelling, a series of orientation values corresponding to the orientation of the agricultural implement in at least one vertical plane, calculating a derived orientation value based on said series of values and, if the derived orientation value is outside a predetermined range, adjusting a mutual position relationship between at least two parts of the agricultural implement that can move relative to each other.
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