Patents by Inventor Jacob Valstar

Jacob Valstar 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).

  • Patent number: 6481190
    Abstract: The invention relates to a method for harvesting agricultural products, in particular fruit, such as capsicums, tomatoes, cucumbers, aubergines, peppers, etc., from plants which are cultivated in greenhouses. The product-bearing plants are cultivated in parallel rows. Between the rows, processing passages which extend in the longitudinal direction thereof are provided, in such a manner that each row adjoins a processing passage. Between the rows, harvest conveyor tracks which extend in the longitudinal direction thereof are arranged, in such a manner that each row adjoins the harvest conveyor track. The product to be picked from a specific row is harvested from the processing passage which adjoins this specific row, is laid onto the harvest conveyor track which adjoins this specific row and by the harvest conveyor track is removed to a delivery point at one of the ends of the specific row.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: November 19, 2002
    Assignees: Valstar W.P.S. B.V., Forprema B.V.
    Inventors: Evert Van Zanten, Jacob Valstar
  • Publication number: 20010035330
    Abstract: The invention relates to a method for harvesting agricultural products, in particular fruit, such as capsicums, tomatoes, cucumbers, aubergines, peppers, etc., from plants which are cultivated in greenhouses. The product-bearing plants are cultivated in parallel rows. Between the said rows, processing passages which extend in the longitudinal direction thereof are provided, in such a manner that each row adjoins a said processing passage. Between the said rows, harvest conveyor tracks which extend in the longitudinal direction thereof are arranged, in such a manner that each row adjoins said harvest conveyor track. The product to be picked from a specific row is harvested from the processing passage which adjoins this specific row, is laid onto the harvest conveyor track which adjoins this specific row and by the said harvest conveyor track is removed to a delivery point at one of the ends of the said specific row. The invention also relates to a device for using the method according to the invention.
    Type: Application
    Filed: February 12, 2001
    Publication date: November 1, 2001
    Inventors: Evert Van Zanten, Jacob Valstar
  • Patent number: 5878527
    Abstract: The invention relates to a method for the cultivation of plants, comprising the following steps:a) placing root containers (2) containing a plant on a cultivation conveyor belt (4),b) allowing the plants (3) cultivated in the root containers to grow on said cultivation conveyor belt whilst the cultivation conveyor belt is stationary,c) using the cultivation conveyor belt to transport the root containers placed on the cultivation conveyor belt to a dispensing point (14), for example when the plants have grown sufficiently or have to be given an intermediate treatment.With this method it is advantageous if the cultivation conveyor belt (4) extends through a tray (1) having raised side walls (5) so that water can be supplied to the tray during step b) without said water flowing away of its own accord. The invention also relates to an installation for application of the method.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: March 9, 1999
    Assignee: Damsigt B.V.
    Inventor: Jacob Valstar
  • Patent number: 5561943
    Abstract: The invention relates to a method for the cultivation of plants, comprising the following steps:a) placing root containers (2) containing a plant on a cultivation conveyor belt (4),b) allowing the plants (3) cultivated in the root containers to grow on said cultivation conveyor belt whilst the cultivation conveyor belt is stationary,c) using the cultivation conveyor belt to transport the root containers placed on the cultivation conveyor belt to a dispensing point (14), for example when the plants have grown sufficiently or have to be given an intermediate treatment.With this method it is advantageous if the cultivation conveyor belt (4) extends through a tray (1) having raised side walls (5) so that water can be supplied to the tray during step b) without said water flowing away of its own accord. The invention also relates to an installation for application of the method.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: October 8, 1996
    Assignee: Damsigt B.V.
    Inventor: Jacob Valstar