3493237

Information

• Patent Grant
• 3493237

• References
• Source

• Patent Number

  3,493,237

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1970
  55 years ago

• CPC

  • F16L13/113 - for concrete pipes
  • F16J15/025 - and with at least one flexible lip
  • F16L13/11 - using materials which fill the space between parts of a joint before hardening
  • F16L13/116 - for socket pipes
  • F16L17/025 - the sealing rings having radially directed ribs

• US Classifications

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