Patents Assigned to Vaderstad Holding AB
  • Patent number: 12239042
    Abstract: The disclosure relates to a method, performed by a control device (100), for detecting abnormal product flow in an agricultural implement (1) comprising a feed system (10) for an agricultural product (5). The feed system (10) comprises: a first flow path (12); an air flow generating unit (14) arranged in fluid communication with the first flow path (12); a primary metering device (16) arranged to provide the agricultural product (5) to the air flow in the first flow path (12); and at least one distribution unit (20). The at least one distribution unit (20) comprises at least two outlets (22), each connected to a separate duct (24) for conveying the agricultural product (5) to the ground. The feed system (10) comprises sensor units (30) arranged in at least two ducts (24).
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: March 4, 2025
    Assignee: VADERSTAD HOLDING AB
    Inventor: Astrid Karlsson
  • Patent number: 10613542
    Abstract: This document relates to an agricultural implement with hydraulic functions and a method of controlling an agricultural implement comprising receiving a speed signal which represents the advancing speed of the agricultural implement, receiving a control signal from a first user interface, allowing, if the speed fulfils a predetermined criterion, the activation of a first actuator function and of a second actuator function based on a control signal, and, if the speed does not fulfil the criterion, restricting the possibility of activating the first actuator function based on a control signal.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: April 7, 2020
    Assignee: Vaderstad Holding AB
    Inventor: Stefan Valberg
  • Patent number: 10561058
    Abstract: A meter housing comprises a meter space with a material inlet and a material outlet, and a wall portion extending between the material inlet and the material outlet. The wall portion has substantially the form of a cylinder sector. The wall portion has a scraper part, which extends substantially parallel to a central axis of the cylinder sector.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: February 18, 2020
    Assignee: Vaderstad Holding AB
    Inventor: Gert Gilstring
  • Patent number: 10285324
    Abstract: A method and a device for feeding granular material in an agricultural implement and an agricultural implement comprising such a device. The method includes establishing an air flow through a take-up zone in a direction toward an outlet of the take-up zone from an inlet of the take-up zone. The take-up zone, has an extend which, viewed in a horizontal plane, is defined by a roof above the take-up zone and side walls extending downward from the roof, so that a space, which is open in the downward direction and toward an outlet, is formed between the roof and the side walls. The method also includes feeding the material to the take-up zone with the aid of gravity, so that the material falls in a direction transversely to the airflow into the take-up zone, thus delimiting the space in the downward direction and adjusting an adjustable part which is adjustable between at least two positions, to regulate a flow rate of the airflow in the space between the material and the roof.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: May 14, 2019
    Assignee: Vaderstad Holding AB
    Inventor: Gert Gilstring
  • Publication number: 20180239360
    Abstract: This document relates to an agricultural implement with hydraulic functions and a method of controlling an agricultural implement comprising receiving a speed signal which represents the advancing speed of the agricultural implement, receiving a control signal from a first user interface, allowing, if the speed fulfils a predetermined criterion, the activation of a first actuator function and of a second actuator function based on a control signal, and, if the speed does not fulfil the criterion, restricting the possibility of activating the first actuator function based on a control signal.
    Type: Application
    Filed: August 25, 2016
    Publication date: August 23, 2018
    Applicant: Vaderstad Holding AB
    Inventor: Stefan Valberg
  • Patent number: 9504199
    Abstract: 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: Grant
    Filed: February 28, 2013
    Date of Patent: November 29, 2016
    Assignee: Vaderstad Holding AB
    Inventors: Ulf Wistrand, Jorgen Fransson
  • 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