Patents Assigned to Vaderstad-Verken AB
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Patent number: 10398073Abstract: A disc device for an agricultural machine includes at least one disc implement, an arm, at one end of which the implement is journalled in bearings at an axle, and a bearing, which is arranged at the opposite end of the arm and is adapted to be fastened at a transverse beam on the frame of the agricultural machine. The disc device includes in the circumference direction of the disc implement mainly equally distributed, freestanding, out towards the periphery radially extending, protruding parts, wherein each protruding part has an outer edge, which extends in the range 15-75 degrees in relation to the plane of the disc implement.Type: GrantFiled: March 7, 2014Date of Patent: September 3, 2019Assignee: VÄDERSTAD-VERKEN ABInventors: Crister Stark, Mikael Edvinsson
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Patent number: 9901023Abstract: A separator for separating granular material, such as seed, fertilizer or pesticide, from a material-laden airflow (FI) includes a separator zone (Z) having an inlet (11) for a material-laden airflow, a material outlet (13) and an air outlet (12, 12?), and at least two separator parts (15, 15?), which extend only substantially along a material flow (FM) in the separator zone (Z) and between which is formed a separator gap (12, 12?), which is sufficiently narrow to allow air, but not the granular material, to pass through it. At the material outlet (13), the separator gap (12, 12?) is at least partially open, viewed in a direction which is substantially parallel with the material flow (FM), so that material which gets stuck in the separator gap (12, 12?) is allowed to leave this by means of displacement principally along the material flow (FM).Type: GrantFiled: March 14, 2013Date of Patent: February 27, 2018Assignee: VADERSTAD-VERKEN ABInventor: Gert Gilstring
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Patent number: 9753493Abstract: The invention refers to a Holder having grip means for a detachable tablet computer or the like with a screen, said holder having a frame, which comprise holder means for reception of said tablet computer. The holder is provided for controlling a machine and comprises a hand grip side or hand grip side portion with buttons or sensors, which are provided for operating a machine by means of said tablet computer mounted thereon and which are able to be activated through finger touch/contact of said holder in order to communicate with certain functions of said tablet computer and/or of the machine which it is arranged to control. Said machine could be an agricultural implement, like a seed drill or the like.Type: GrantFiled: July 22, 2014Date of Patent: September 5, 2017Assignee: VÄDERSTAD-VERKEN ABInventors: Gustav Prejer, Crister Stark, Bengt-Arne Albrektsson, Stefan Välberg
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Patent number: 9609798Abstract: The present document shows a spring suspension device for an agricultural implement, including a casing, a beam extending through the casing, and four spring elements disposed in a space between the casing and the beam. The casing and the beam are resiliently rotatable relative to each other about a rotational axis extending along a longitudinal direction of the beam. The spring elements differ substantially from each other with respect to shape or material properties, and first and second side faces of the beam, which interact with the respective spring elements, differ substantially from each other with respect to the radius of curvature, viewed in a plane perpendicular to the longitudinal direction.Type: GrantFiled: September 25, 2013Date of Patent: April 4, 2017Assignee: Vaderstad-Verken ABInventor: Bengt Sandberg
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Patent number: 9526198Abstract: A suspension unit for an agricultural implement, the suspension unit includes a bearing unit. The bearing unit contains an inner sleeve and an outer sleeve which is rotatable relative to said inner sleeve, and a friction-reducing member arranged between the inner sleeve and the outer sleeve. The suspension unit further includes a spring element, arranged radially outside the outer sleeve, and a holder which forms a spring chamber in which the spring element is accommodated. The spring element is fixed in the spring chamber between a circumferential, radially outwardly open groove, which is integrated with the outer sleeve, and a radially inwardly open groove, which surrounds the outer sleeve.Type: GrantFiled: August 21, 2013Date of Patent: December 27, 2016Assignee: Vaderstad-Verken ABInventors: Henrik Johansson, Mikael Edvinsson, Crister Stark
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Publication number: 20160161989Abstract: The invention refers to a Holder having grip means for a detachable tablet computer or the like with a screen, said holder having a frame, which comprise holder means for reception of said tablet computer. The holder is provided for controlling a machine and comprises a hand grip side or hand grip side portion with buttons or sensors, which are provided for operating a machine by means of said tablet computer mounted thereon and which are able to be activated through finger touch/contact of said holder in order to communicate with certain functions of said tablet computer and/or of the machine which it is arranged to control. Said machine could be an agricultural implement, like a seed drill or the like.Type: ApplicationFiled: July 22, 2014Publication date: June 9, 2016Applicant: VÄDERSTAD-VERKEN ABInventors: Gustav PREJER, Crister STARK, Bengt-Arne ALBREKTSSON, Stefan VÅLBERG
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Publication number: 20160014951Abstract: A disc device for an agricultural machine includes at least one disc implement, an arm, at one end of which the implement is journalled in bearings at an axle, and a bearing, which is arranged at the opposite end of the arm and is adapted to be fastened at a transverse beam on the frame of the agricultural machine. The disc device includes in the circumference direction of the disc implement mainly equally distributed, freestanding, out towards the periphery radially extending, protruding parts, wherein each protruding part has an outer edge, which extends in the range 15-75 degrees in relation to the plane of the disc implement.Type: ApplicationFiled: March 7, 2014Publication date: January 21, 2016Applicant: VÄDERSTAD-VERKEN ABInventors: Crister STARK, Mikael EDVINSSON
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Publication number: 20150351316Abstract: A sealing gasket made of a resilient rubber material or rubber-like material. The sealing gasket is formed as a rotationally symmetric body with a substantially constant cross-sectional profile. The cross-sectional profile includes: a first sealing part located furthest away from a center of rotation of the body and a second sealing part located radially inside the first sealing part, as viewed in the radial direction. An open space is defined by the first and second sealing parts. The second sealing part essentially curves through an angle away from the center of rotation. A seed housing can include such a seal and a seeder can include such a seed housing.Type: ApplicationFiled: August 18, 2015Publication date: December 10, 2015Applicant: Vaderstad-Verken ABInventor: Gert GILSTRING
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Patent number: 9151388Abstract: A sealing gasket made of a resilient rubber material or rubber-like material. The sealing gasket is formed as a rotationally symmetric body with a substantially constant cross-sectional profile. The cross-sectional profile includes: a first sealing part located furthest away from a center of rotation of the body and a second sealing part located radially inside the first sealing part, as viewed in the radial direction. An open space is defined by the first and second sealing parts. The second sealing part essentially curves through an angle away from the center of rotation. A seed housing can include such a seal and a seeder can include such a seed housing.Type: GrantFiled: March 8, 2012Date of Patent: October 6, 2015Assignee: Vaderstad-Verken ABInventor: Gert Gilstring
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Patent number: 9137941Abstract: A precision seeder for sowing seeds to obtain a predetermined number of plants per unit of length includes a seed discharging tube adapted to feed the seed by an excess air pressure from a seed distributing device to a seed outlet, a seed furrow opener including two sowing discs arranged at an angle relative to each other, and a resilient press surface for pressing the seed into the soil. The press surface is configured such that a direction of flow of the seeds at the seed outlet intersects or is substantially tangent to at least a portion of the press surface. The seed outlet is located between the sowing discs and, as seen in the transverse direction, inside or immediately adjacent to the periphery of at least one of the sowing discs.Type: GrantFiled: March 22, 2011Date of Patent: September 22, 2015Assignee: Vaderstad-Verken ABInventor: Magnus Stark
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Patent number: 9119338Abstract: Agricultural machinery and procedure for an agricultural machinery (11) that comprises metering devices (B1, B2, Bn) placed laterally in the agricultural machinery so as to provide a number of parallel metering rows (n), each one of the metering devices (Bn) being connected to at least one control unit (22) for the individual control of each metering device, the control unit (22) receiving a first signal, which acts on the control unit (22) to either start or stop the metering from the laterally outermost positioned and activated metering devices (B1), the control unit (22) receiving a second signal, which acts on the control unit (22) to either start or stop the metering from at least one of the laterally activated second outermost positioned metering devices or groups, the calculation unit, with the aid of the instant of time of the first signal and the instant of time of the second signal as well as the speed of the agricultural machinery, calculating the individual instants of time of start or stop of theType: GrantFiled: January 25, 2012Date of Patent: September 1, 2015Assignee: Väderstad-Verken ABInventors: Johan Alsäter, Jörgen Dahl
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Publication number: 20150030420Abstract: An agricultural implement including at least one container for granular or powder material and a feed device for airflow-based feeding of the granular or powder material. The feed device includes a fan including an impeller accommodated in a fan housing. At least one wall portion of the fan housing is integrated with a wall portion of the container.Type: ApplicationFiled: February 28, 2013Publication date: January 29, 2015Applicant: Vaderstad-Verken ABInventors: Ulf Wistrand, Jorgen Fransson
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Patent number: 8789483Abstract: A sow housing for piecemeal sowing of seeds. The sow housing includes a seed bin and a rotating seed element having a wall that has a plurality of through holes. Each hole is arranged to, during a first part of the revolution of the hole, retain a seed as a consequence of pressure difference between the two sides of the wall. A cover is arranged to cover each hole during a second part of the revolution of the hole.Type: GrantFiled: September 9, 2010Date of Patent: July 29, 2014Assignee: Väderstad-Verken ABInventor: Gert Gilstring
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Publication number: 20140060862Abstract: An agricultural implement, for working soil across which the agricultural implement travels or is towed, includes a frame, a first depth maintaining unit, including a first hydraulic actuator for adjusting height of the first depth maintaining unit relative to the frame, a second depth maintaining unit, including a second hydraulic actuator for adjusting height of the second depth maintaining unit relative to the frame, at least one soil working tool, and a hydraulic system including the hydraulic actuators configured to be connected to a mechanism supplying hydraulic fluid to the hydraulic system. A first side of the first hydraulic actuator communicates with a first side of the second hydraulic actuator and a measuring mechanism configured to provide a measured value corresponding to a first amount of hydraulic fluid occurring on said first sides.Type: ApplicationFiled: March 9, 2012Publication date: March 6, 2014Applicant: Vaderstad-Verken ABInventor: Gert Gilstring
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Publication number: 20140041564Abstract: A sealing gasket made of a resilient rubber material or rubber-like material. The sealing gasket is formed as a rotationally symmetric body with a substantially constant cross-sectional profile. The cross-sectional profile includes: a first sealing part located furthest away from a center of rotation of the body and a second sealing part located radially inside the first sealing part, as viewed in the radial direction. An open space is defined by the first and second sealing parts. The second sealing part essentially curves through an angle away from the center of rotation. A seed housing can include such a seal and a seeder can include such a seed housing.Type: ApplicationFiled: March 8, 2012Publication date: February 13, 2014Applicant: Vaderstad-Verken ABInventor: Gert Gilstring
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Publication number: 20130327260Abstract: Agricultural machinery and procedure for an agricultural machinery (11) that comprises metering devices (B1, B2, Bn) placed laterally in the agricultural machinery so as to provide a number of parallel metering rows (n), each one of the metering devices (Bn) being connected to at least one control unit (22) for the individual control of each metering device, the control unit (22) receiving a first signal, which acts on the control unit (22) to either start or stop the metering from the laterally outermost positioned and activated metering devices (B1), the control unit (22) receiving a second signal, which acts on the control unit (22) to either start or stop the metering from at least one of the laterally activated second outermost positioned metering devices or groups, the calculation unit, with the aid of the instant of time of the first signal and the instant of time of the second signal as well as the speed of the agricultural machinery, calculating the individual instants of time of start or stop of theType: ApplicationFiled: January 25, 2012Publication date: December 12, 2013Applicant: VÄDERSTAD-VERKEN ABInventors: Johan Alsäter, Jörgen Dahl
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Publication number: 20130220654Abstract: The invention relates to a roller cylinder (1) comprising band rings (6) which are attached to a centre axis (17, 17a, 17b). The roller cylinder comprises at least two band ring segments (14, 14a, 14b) consisting of an outer, substantially circular portion (15), an inner portion (16) and a radial portion (18) extending substantially radially between the inner and outer portions, said inner portions of the band ring segments being fixed by means of fastening means, such as screws (19, 20, 19a, 20a, 21a, 19b, 20b, 21b), to the centre axis and abut the centre axis at least at the attachment points of the fastening means between the inner portion of the band ring segments and the centre axis. The invention also relates to a band ring segment included in a roller cylinder provided with band rings.Type: ApplicationFiled: October 31, 2011Publication date: August 29, 2013Applicant: VÄDERSTAD-VERKEN ABInventor: Crister Stark
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Patent number: 8443742Abstract: An agricultural machine including a seed metering device to meter seeds for the distribution to the ground across which the agricultural machine moves. The seed metering device embraces a wall that is arranged to rotate. The seed metering device is furthermore arranged to communicate with a pressure actuating appliance for providing a wall pressure difference between a seed reception side, high-pressure side, of the wall and a side, low pressure side, of the wall that is opposite the seed reception side. The wall is provided with a plurality of through retention openings for the reception on the seed reception side of the wall, by the wall pressure difference, of seeds at the retention openings. Then, the seeds are transported, by the rotation of the wall, through a wall transportation distance whereupon they are released from the wall.Type: GrantFiled: November 5, 2010Date of Patent: May 21, 2013Assignee: Väderstad-Verken ABInventor: Johan Orrenius
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Publication number: 20130118393Abstract: A precision seeder for sowing seeds to obtain a predetermined number of plants per unit of length includes a seed discharging tube adapted to feed the seed by an excess air pressure from a seed distributing device to a seed outlet, a seed furrow opener including two sowing discs arranged at an angle relative to each other, and a resilient press surface for pressing the seed into the soil. The press surface is configured such that a direction of flow of the seeds at the seed outlet intersects or is substantially tangent to at least a portion of the press surface. The seed outlet is located between the sowing discs and, as seen in the transverse direction, inside or immediately adjacent to the periphery of at least one of the sowing discs.Type: ApplicationFiled: March 22, 2011Publication date: May 16, 2013Applicant: VADERSTAD-VERKEN ABInventor: Magnus Stark
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Patent number: 8336471Abstract: Agricultural machine embracing at least one drilling unit including a support device as well as a seed metering device. The drilling unit is movably connected with a structural member embraced by the agricultural machine. The seed metering device is fixedly connected with the support device of the drilling unit and the seed metering device includes a chamber for seeds arranged to be supplied with a positive pressure where the seed metering element constitutes a wall limiting the chamber and in which holes or recesses are arranged. The holes/recesses connect the chamber with the surroundings, with the purpose of, by the pressure difference developed hereby, attaching and transporting seeds at the holes/recesses of the seed metering element. A seed metering line has an inlet in the chamber, with the purpose of, by the positive pressure in the chamber, creating an air flow for the transportation of the seeds from the chamber through the seed metering line to a drill furrow.Type: GrantFiled: October 20, 2009Date of Patent: December 25, 2012Assignee: Väderstad-Verken ABInventor: Gert Gilstring