Patents by Inventor Crister Stark

Crister Stark has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190200514
    Abstract: A method and system for calibrating the feed rate of a metering device for airflow-borne feeding of granular material in an agricultural implement. The method of calibrating the feed rate of the metering device comprises a first volumetric feeder with a first metering rotor arranged to feed granular material to an airflow channel.
    Type: Application
    Filed: May 12, 2017
    Publication date: July 4, 2019
    Applicant: Väderstad Holding AB
    Inventor: Crister STARK
  • Patent number: 10314223
    Abstract: An agricultural implement comprising a first frame section, a portion which is moveable relative to the first frame section, and an actuator for controlling a relative movement between the first frame section and the portion. The agricultural implement has a first sensor 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 arranged to provide a second value corresponding to the angle of the portion relative to the predetermined reference plane or the predetermined reference direction. The reference plane or reference direction is defined in relation to a direction of gravity.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: June 11, 2019
    Assignee: Väderstad Holding AB
    Inventor: Crister Stark
  • Publication number: 20180206387
    Abstract: 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.
    Type: Application
    Filed: July 5, 2016
    Publication date: July 26, 2018
    Inventor: Crister Stark
  • Patent number: 9753493
    Abstract: 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: Grant
    Filed: July 22, 2014
    Date of Patent: September 5, 2017
    Assignee: VÄDERSTAD-VERKEN AB
    Inventors: Gustav Prejer, Crister Stark, Bengt-Arne Albrektsson, Stefan Välberg
  • Publication number: 20170118901
    Abstract: 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.
    Type: Application
    Filed: June 12, 2015
    Publication date: May 4, 2017
    Inventor: Crister Stark
  • Patent number: 9526198
    Abstract: 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: Grant
    Filed: August 21, 2013
    Date of Patent: December 27, 2016
    Assignee: Vaderstad-Verken AB
    Inventors: Henrik Johansson, Mikael Edvinsson, Crister Stark
  • Publication number: 20160161989
    Abstract: 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: Application
    Filed: July 22, 2014
    Publication date: June 9, 2016
    Applicant: VÄDERSTAD-VERKEN AB
    Inventors: Gustav PREJER, Crister STARK, Bengt-Arne ALBREKTSSON, Stefan VÅLBERG
  • Publication number: 20160014951
    Abstract: 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: Application
    Filed: March 7, 2014
    Publication date: January 21, 2016
    Applicant: VÄDERSTAD-VERKEN AB
    Inventors: Crister STARK, Mikael EDVINSSON
  • Patent number: 9210837
    Abstract: The invention relates to a roller cylinder (1) comprising band rings (6) which are attached to a center 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 center axis and abut the center axis at least at the attachment points of the fastening means between the inner portion of the band ring segments and the center axis. The invention also relates to a band ring segment included in a roller cylinder provided with band rings.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: December 15, 2015
    Assignee: Vaderstad Holding AB
    Inventor: Crister Stark
  • Patent number: 9107340
    Abstract: The invention refers to a disc (8) for an agricultural implement (1) comprising an annular, outside a predetermined center diameter (D) defined, soil-cultivating portion (44), a central, inside a predetermined center diameter (d) defined, dish-shaped portion (43), with a boss-receiving, inner side and between these portions an existing, annular connection portion (45) with fastening screw holes (46). The connection portion (45) is a truncated conical portion, the inner mantle surface of which is mainly straight or double-bowed with the convex side facing said inner side and a line through the opening plane in the hole opening of each fastening screw hole on said inner side forms an angle ? with a plane that is perpendicular to the center line of the disc, wherein the angle ? is 5°-10°.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: August 18, 2015
    Assignee: VADERSTAD-VERKEN AKTEBOLAG
    Inventor: Crister Stark
  • Publication number: 20150189824
    Abstract: The present document shows a suspension unit for an agricultural implement, comprising 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 comprises 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: Application
    Filed: August 21, 2013
    Publication date: July 9, 2015
    Inventors: Henrik Johansson, Mikael Edvinsson, Crister Stark
  • Patent number: 8997886
    Abstract: An agricultural machine (101; 201; 301) comprising two mainly parallel, in the direction of travel, cross-running disc implement rows (102a, 102c; 202a, 202b; 304a, 304b), wherein the orientation of the disc implements (102b, 102d; 203a, 203b; 302a, 302b) contained in the mentioned disc implement rows is arranged so that the fore row (102a; 202a; 304a) has disc implements that are mounted on a frame beam (110; 211; 303) and that are angled outwards and backwards towards the sides of the machine and in a dividing line mainly parallel to the direction of travel of the machine form a first point of change (208a, 304c), and the rear row (102c, 202b; 304b) has disc implements (102d; 203b; 302b) that are mounted on a frame beam (110; 211; 303) and that are angled inwards and backwards from the sides of the machine and in the dividing line form a second point of change (208b, 304a), wherein the fore row is adapted to throw soil from the first point of change outwards towards the sides of the machine and the other ro
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: April 7, 2015
    Assignee: Vaderstad-Verken Aktiebolag
    Inventor: Crister Stark
  • Patent number: 8677914
    Abstract: The invention refers to a method at a seed drill (1) or a planter for placing seeds (27) in the soil. According to the invention the steps executed are that each seed fed out is detected, its placement site in the soil is determined through detection and at least one compound (26, 28) is placed intermittently at at least one predetermined placement site in relation to the specific placement site of each seed. The invention also refers to a device (4) for execution of the method.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: March 25, 2014
    Assignee: Vaderstad-Verken Aktiebolag
    Inventor: Crister Stark
  • Publication number: 20130220654
    Abstract: 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: Application
    Filed: October 31, 2011
    Publication date: August 29, 2013
    Applicant: VÄDERSTAD-VERKEN AB
    Inventor: Crister Stark
  • Publication number: 20120260835
    Abstract: The invention refers to a method at a seed drill (1) or a planter for placing seeds (27) in the soil. According to the invention the steps executed are that each seed fed out is detected, its placement site in the soil is determined through said detection and at least one compound (26, 28) is placed intermittently at at least one predetermined placement site in relation to the specific placement site of each seed. The invention also refers to a device (4) for execution of the method.
    Type: Application
    Filed: December 17, 2010
    Publication date: October 18, 2012
    Applicant: VÄDERSTAD-VERKEN AKTIEBOLAG
    Inventor: Crister Stark
  • Publication number: 20120241182
    Abstract: The invention refers to an agricultural machine (101; 201; 301) comprising two mainly parallel, in the direction of travel cross-running disc implement rows (102a, 102c; 202a, 202b; 304a, 304b), wherein the orientation of the disc implements (102b, 102d; 203a, 203b; 302a, 302b) contained in the mentioned disc implement rows is arranged so that the fore row (102a; 202a; 304a) has disc implements that are mounted on a frame beam (110; 211; 303) and that are angled outwards backwards towards the sides of the machine and in a dividing line mainly parallel to the direction of travel of the machine form a first point of change (208a, 304c), and the rear row (102c, 202b; 304b) has disc implements (102d; 203b; 302b) that are mounted on a frame beam (110; 211; 303 ) and that are angled inwards backwards from the sides of the machine and in the dividing line form a second point of change (208b, 304a), wherein the fore row is adapted to throw soil from the first point of change outwards towards the sides of the machine
    Type: Application
    Filed: September 22, 2010
    Publication date: September 27, 2012
    Applicant: VADERSTAD-VERKEN AKTIEBOLAG
    Inventor: Crister Stark
  • Publication number: 20120103642
    Abstract: The invention refers to a disc (8) for an agricultural implement (1) comprising an annular, outside a predetermined centre diameter (D) defined, soil-cultivating portion (44), a central, inside a predetermined centre diameter (d) defined, dish-shaped portion (43), with a boss-receiving, inner side and between these portions an existing, annular connection portion (45) with fastening screw holes (46). The connection portion (45) is a truncated conical portion, the inner mantle surface of which is mainly straight or double-bowed with the convex side facing said inner side and a line through the opening plane in the hole opening of each fastening screw hole on said inner side forms an angle ? with a plane that is perpendicular to the centre line of the disc, wherein the angle ? is 5°-10°.
    Type: Application
    Filed: May 27, 2010
    Publication date: May 3, 2012
    Applicant: VADERSTAD-VERKEN AKTIEBOLAG
    Inventor: Crister Stark
  • Patent number: 7997217
    Abstract: The invention refers to an implement regulating device in an agricultural machine including at least one group of implements (4) arranged across the driving direction, thereafter cross-wise arranged support members (15) and at least one each group of implements and support members are controllable and adjustable by a power device (23). Implements (4) and support members (15) in each group are journalled in bearings at one end of at least one carrying arm (13). The power device (23) is adapted to rotate a cross-running main beam (19). The main beam is connected with the carrying arm (13) via a spring member (18) and is rotatably suspended in relation to the frame (Ia) of the machine (1). Activation of the power device is adapted to influence the carrying arm between a position for maximum sowing depth and a transport position.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: August 16, 2011
    Assignee: Vaderstad-Verken Aktiebolag
    Inventors: Crister Stark, Johan Mattsson
  • Publication number: 20100192820
    Abstract: The invention refers to an implement regulating device at an agricultural machine comprising at least one group of implements (4) arranged across the driving direction, thereafter cross-wise arranged support members (15) and at least one each group of implements and support members controllable and adjustable power device (23) whereby implements (4) and support members (15) comprising each group are journalled in bearings at one end of at least one carrying arm (13) and that said power device (23) is adapted to rotate a cross-running main beam (19), whereby the main beam is connected with the carrying arm (13) via a spring member (18) and is rotatably suspended in relation to the frame (Ia) of the machine (1), whereby activation of said power device is adapted to influence the carrying arm between a position for maximum sowing depth and a transport position.
    Type: Application
    Filed: October 11, 2007
    Publication date: August 5, 2010
    Applicant: Vaderstad-Verken Aktiebolag
    Inventors: Crister Stark, Johan Mattsson
  • Publication number: 20090236108
    Abstract: The invention refers to an agricultural machine (1) for cultivation comprising a frame beam extending on both sides of a centre line in the driving direction of the machine, on which tools (11), preferably planter aggregates, are arranged at relative or group wise generally equal spacing. The agricultural machine has at least one joint for dividing the frame beam into frame beam sections (5, 6) and means (9) for swinging the corresponding frame beam sections on each side of said centre line through a generally equal angle in the horizontal plane, so that neighbouring tools in the working position on the frame beam sections always maintain a generally equal relative spacing.
    Type: Application
    Filed: October 5, 2006
    Publication date: September 24, 2009
    Applicant: Vaderstad-Verken Aktiebolag
    Inventor: Crister Stark