Patents Assigned to TREEFUL INC.
  • Structure for preventing rain leakage in tree house
    Patent number: 11970863
    Abstract: A light and relatively simple structure for preventing rain leakage in a tree house. A tree house using a trunk of a tree as a pillar inevitably has a gap between the trunk and a roof. Thus, a plurality of two-layer waterproof sheets are placed on top of the roof, so that each sheet can absorb rain water that would run down the trunk of the tree and enter the gap, and can drain the rain water onto the roof. This makes it possible to prevent rain leakage in the tree house through the gap between the trunk of the tree and the roof.
    Type: Grant
    Filed: August 5, 2020
    Date of Patent: April 30, 2024
    Assignee: TREEFUL INC.
    Inventor: Satoru Kikugawa
  • STRUCTURE FOR PREVENTING RAIN LEAKAGE IN TREE HOUSE
    Publication number: 20220396950
    Abstract: A light and relatively simple structure for preventing rain leakage in a tree house. A tree house using a trunk of a tree as a pillar inevitably has a gap between the trunk and a roof. Thus, a plurality of two-layer waterproof sheets are placed on top of the roof, so that each sheet can absorb rain water that would run down the trunk of the tree and enter the gap, and can drain the rain water onto the roof. This makes it possible to prevent rain leakage in the tree house through the gap between the trunk of the tree and the roof.
    Type: Application
    Filed: August 5, 2020
    Publication date: December 15, 2022
    Applicant: TREEFUL INC.
    Inventor: Satoru KIKUGAWA