3898918

Information

• Patent Grant
• 3898918

• References
• Source

• Patent Number

  3,898,918

• Date Filed

  Not available

• Date Issued

  Tuesday, August 12, 1975
  49 years ago

• CPC

  • F16L55/136 - the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like
  • B29C53/60 - using internal forming surfaces
  • B29C53/607 - having driving means for advancing the wound articles
  • B29C53/8091 - Cutting the ends, surface finishing
  • B29C53/825 - for continuous winding
  • F16L9/16 - wound from sheets or strips, with or without reinforcement
  • F16L55/134 - by means of an inflatable packing
  • B29C2793/009 - after shaping
  • B29L2009/00 - Layered products

• US Classifications

  • 138 - Pipes and tubular conduits
  • 092 - Expansible chamber devices
  • 226 - Advancing material of indeterminate length