3700030

Information

• Patent Grant
• 3700030

• References
• Source

• Patent Number

  3,700,030

• Date Filed

  Not available

• Date Issued

  Tuesday, October 24, 1972
  52 years ago

• CPC

  • B21D11/06 - Bending into helical or spiral form Forming a succession of return bends
  • B21D53/027 - by helically or spirally winding elongated elements
  • B21F3/04 - externally on a mandrel or the like
  • B21F27/12 - Making special types or portions of network by methods or means specially adapted therefor
  • F28D7/024 - the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
  • F28F9/013 - for tubes or tube-assemblies
  • Y10S165/414 - for supporting coil tubes

• US Classifications

  • 165 - Heat exchange
  • 122 - Liquid heaters and vaporizers