Patents Assigned to Spinsafe, Inc.
  • Patent number: 5062439
    Abstract: A method and apparatus are provided for injecting sealant into a packing assembly chamber surrounding a valve stem 11 of a valve 2 without venting the pressure within the valve 2. A cylindrical body 60 is frictionally welded to the exterior of the valve 2 adjacent the packing assembly chamber. A drill bit is passed into the body 60 and through a set of packing seals 87. An opening is completed into the packing chamber. As the drill bit is withdrawn from the body 60, a second valve 70 is manually "closed" to isolate the packing chamber from the drill bit and prevent the escape of pressurized fluid when the drill bit is removed from the seals 87. Thereafter, a device for injecting sealant is attached to the body 60 and the valve 70 is "opened" to allow the sealant to flow into the packing chamber.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: November 5, 1991
    Assignee: Spinsafe, Inc.
    Inventors: Johnny L. Butler, Richard E. Wakeland, Donald R. Batson, Robert E. Metzger
  • Patent number: 5052427
    Abstract: A method and apparatus are provided for injecting sealant into a packing assembly chamber surrounding a valve stem 11 of a valve 2 without venting the pressure within the valve 2. A cylindrical body 60 is frictionally welded to the exterior of the valve 2 adjacent the packing assembly chamber. A drill bit is passed into the body 60 and through a set of packing seals 87. An opening is completed into the packing chamber. As the drill bit is withdrawn from the body 60, a second valve 70 is manually "closed" to isolate the packing chamber from the drill bit and prevent the escape of pressurized fluid when the drill bit is removed from the seals 87. Thereafter, a device for injecting sealant is attached to the body 60 and the valve 70 is "opened" to allow the sealant to flow into the packing chamber.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: October 1, 1991
    Assignee: Spinsafe, Inc.
    Inventors: Johnny L. Butler, Richard E. Wakeland, Donald R. Batson, Robert E. Metzger