Patents by Inventor Lena Look

Lena Look 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).

  • Hydraulic system for double stacker industrial truck
    Patent number: 8640830
    Abstract: The invention relates to hydraulic system for an double stacker truck comprising a pump for providing hydraulic fluid to the hydraulic system and a first hydraulic lifting cylinder for moving a first load carriage and a second hydraulic lifting cylinder for moving a second load carriage of the truck, the hydraulic lifting system is characterized in a flow divider for dividing the flow of hydraulic fluid between the first and the second hydraulic cylinder and a first directional valve which is arranged open in a first direction for leading hydraulic fluid to the first lifting cylinder or to open in a second direction for leading hydraulic fluid to the second hydraulic cylinder. The invention also relates to a double stacker truck comprising a hydraulic system for moving the load carriages of the truck.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: February 4, 2014
    Assignee: BT Products AB
    Inventor: Lena Look
  • HYDRAULIC SYSTEM FOR DOUBLE STACKER INDUSTRIAL TRUCK
    Publication number: 20110139546
    Abstract: The invention relates to hydraulic system for an double stacker truck comprising a pump for providing hydraulic fluid to the hydraulic system and a first hydraulic lifting cylinder for moving a first load carriage and a second hydraulic lifting cylinder for moving a second load carriage of the truck, the hydraulic lifting system is characterized in a flow divider for dividing the flow of hydraulic fluid between the first and the second hydraulic cylinder and a first directional valve which is arranged open in a first direction for leading hydraulic fluid to the first lifting cylinder or to open in a second direction for leading hydraulic fluid to the second hydraulic cylinder. The invention also relates to a double stacker truck comprising a hydraulic system for moving the load carriages of the truck.
    Type: Application
    Filed: August 18, 2009
    Publication date: June 16, 2011
    Applicant: BT Products AB
    Inventor: Lena Look