3348850

Information

• Patent Grant
• 3348850

• References
• Source

• Patent Number

  3,348,850

• Date Filed

  Not available

• Date Issued

  Tuesday, October 24, 1967
  57 years ago

• CPC

  • F16L41/086 - fixed with screws
  • E03F5/02 - Manhole shafts or other inspection chambers snow-filling openings accessories
  • F16L5/08 - by means of axial screws compressing a ring or sleeve
  • F16L21/04 - in which sealing rings are compressed by axially-movable members
  • F16L41/002 - of concrete, cement or asbestos-cement
  • E03F2005/028 - Sealing joints between manhole segments
  • Y10S277/91 - O-ring seal

• US Classifications

  • 277 - Seal for a joint or juncture
  • 285 - Pipe joints or couplings