Patents Assigned to W.R. Parkinson Co., Inc.
  • Fire resistant container having both active and passive protection
    Patent number: 5056603
    Abstract: A fire-resistant container such as a courier bag or the like which provides both active and passive protection to its contents to thereby obtain a high degree of fire protection over a long period of time. Passive protection is provided by insulating walls, while active protection is obtained by disposing inside the bag a gas cylinder containing a charge of halogenated hydrocarbon. The gas cylinder is closed with a solder plug whose melting temperature is chosen in accordance with the type of material to be protected.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: October 15, 1991
    Assignee: W.R. Parkinson Co., Inc.
    Inventor: William R. Parkinson