Patents by Inventor Wong Yeon Chai

Wong Yeon Chai 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).

  • Method of harvesting timber trees in a jungle and a machine for performing said method
    Patent number: 6675848
    Abstract: A method of harvesting standing trees in a jungle comprising bringing a crawler crane, preferably a hydraulic crawler crane, with a boom (14) to a block of jungle, securing the tree to be harvested to a sling in the boom, cutting the base of the tree, removing the cut tree using the boom, laying the cut tree on the ground, and cutting the crown of the cut tree. In another aspect the crown of the tree is cut first and removed by means of a sling on the boom of the crane. The crane is used to remove the crownless tree, or the crownless tree is cut at the base and allowed to fall. Main roads, spur roads, and snig tracks are constructed in the logging area.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: January 13, 2004
    Assignee: Green Earth Limited
    Inventor: Wong Yeon Chai
  • Method of harvesting timber trees in a jungle and a machine for performing said method
    Patent number: 6564835
    Abstract: A method of harvesting standing trees in a jungle comprising bringing a crawler crane, preferably a hydraulic crawler crane, with a boom (14) to a block of jungle, securing the tree to be harvested to a sling in the boom, cutting the base of the tree, removing the cut tree using the boom, laying the cut tree on the ground, and cutting the crown of the cut tree. In another aspect the crown of the tree is cut first and removed by means of a sling on the boom of the crane. The crane is used to remove the crownless tree, or the crownless tree is cut at the base and allowed to fall. Main roads, spur roads, and snig tracks are constructed in the logging area.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: May 20, 2003
    Assignee: Green Earth Limited
    Inventor: Wong Yeon Chai
  • Method of harvesting timber trees in a jungle and a machine for performing said method
    Publication number: 20020129871
    Abstract: A method of harvesting standing trees in a jungle comprising bringing a crawler crane, preferably a hydraulic crawler crane, with a boom (14) to a block of jungle, securing the tree to be harvested to a sling in the boom, cutting the base of the tree, removing the cut tree using the boom, laying the cut tree on the ground, and cutting the crown of the cut tree. In another aspect the crown of the tree is cut first and removed by means of a sling on the boom of the crane. The crane is used to remove the crownless tree, or the crownless tree is cut at the base and allowed to fall. Main roads, spur roads, and snig tracks are constructed in the logging area.
    Type: Application
    Filed: February 5, 2002
    Publication date: September 19, 2002
    Applicant: Green Earth Limited
    Inventor: Wong Yeon Chai