Patents Assigned to Yugen Kaisha Yamamoto Kagu Seisakusho
  • Treatment apparatus for seasoning wood for structural uses
    Patent number: 5943789
    Abstract: The invention relates to an apparatus for treating green woods for the purpose of creating lumber of suitable quality for the implementation of building. The woods are placed in a treatment chamber with a sealed atmosphere, the temperature of the chamber is increased, and the woods are maintained at a specific temperature and humidity for a given period of time, the woods are the sprayed with hot water until the moisture content of the woods are allowed to decrease to a desired value.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: August 31, 1999
    Assignee: Yugen Kaisha Yamamoto Kagu Seisakusho
    Inventor: Masahiro Yamamoto
  • Treatment method for woods and apparatus thereof
    Patent number: 5752328
    Abstract: A method and apparatus for reducing or preventing distortion of woods. Woods are heated at a temperature, a relative humidity and for a time sufficient to uniformly distribute lignin and cellulose therein. These woods are then sprayed with heated water and then dried to a desired moisture content.
    Type: Grant
    Filed: May 8, 1996
    Date of Patent: May 19, 1998
    Assignee: Yugen Kaisha Yamamoto Kagu Seisakusho
    Inventor: Masahiro Yamamoto