Patents Assigned to National Wood Treating Company
  • Wood-treating device
    Patent number: 5620516
    Abstract: A docking sleeve is provided for insertion into a bore in the side of a work-piece. A sealed chemical-holding cylinder is passed through the docking sleeve into the bore and an actuator is screwed into the docking sleeve to pierce a seal of a the cylinder so that chemicals contained therein can vaporize and treat the inside of the work-piece.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: April 15, 1997
    Assignee: National Wood Treating Company
    Inventors: Guy G. Helsing, Jon Atherton
  • Wood-treating device
    Patent number: 5443641
    Abstract: A docking sleeve is provided for insertion into a bore in the side of a work-piece. A sealed chemical-holding cylinder is passed through the docking sleeve into the bore and an actuator is screwed into the docking sleeve to pierce a seal of a the cylinder so that chemicals contained therein can vaporize and treat the inside of the work-piece.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: August 22, 1995
    Assignee: National Wood Treating Company
    Inventors: Guy G. Helsing, Jon Atherton