Patents by Inventor David Hedger

David Hedger 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).

  • Lifting tool for servicing of wind turbine gearbox components and method of servicing using such a tool
    Patent number: 9587622
    Abstract: A lifting tool (2) for use in lifting components (1,5) from a wind turbine gearbox during service or repair comprises a frame-like structure comprising interconnected beams (4,6,8,8,10,12,20,22,24,26,28) for securing to the gearbox housing once an upper housing part has been removed to provide an opening to the gearbox interior, the tool being secured to the gearbox at a periphery of the opening, and further comprising one or more pulleys (36) mounted on the frame-like structure, a lifting chain, cable, wire or rope extending over the pulley or pulleys attachable to a component (1) within the gearbox, the frame-like structure comprising a number of inter-connectable modules.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: March 7, 2017
    Assignee: Vestas Wind Systems A/S
    Inventor: David Hedger
  • LIFTING TOOL FOR SERVICING OF WIND TURBINE GEARBOX COMPONENTS AND METHOD OF SERVICING USING SUCH A TOOL
    Publication number: 20150285215
    Abstract: A lifting tool (2) for use in lifting components (1,5) from a wind turbine gearbox during service or repair comprises a frame-like structure comprising interconnected beams (4,6,8,8,10,12,20,22,24,26,28) for securing to the gearbox housing once an upper housing part has been removed to provide an opening to the gearbox interior, the tool being secured to the gearbox at a periphery of the opening, and further comprising one or more pulleys (36) mounted on the frame-like structure, a lifting chain, cable, wire or rope extending over the pulley or pulleys attachable to a component (1) within the gearbox, the frame-like structure comprising a number of inter-connectable modules.
    Type: Application
    Filed: June 26, 2012
    Publication date: October 8, 2015
    Applicant: VESTAS WIND SYSTEMS A/S
    Inventors: Mark Bennett, David Hedger