3662821

Information

• Patent Grant
• 3662821

• References
• Source

• Patent Number

  3,662,821

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1972
  52 years ago

• CPC

  • B29C33/044 - in rolls calenders or drums
  • B29B7/625 - provided with cooling or heating means
  • D06C15/08 - Rollers therefor
  • D21G1/0266 - using a heat-transfer fluid
  • F28F5/02 - Rotary drums or rollers
  • B29C33/048 - using steam
  • Y10S165/14 - Rotating heat exchanger having rotating flow confining structures or chambers for two separate heat exchange fluids

• US Classifications

  • 165 - Heat exchange
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 425 - Plastic article or earthenware shaping or treating: apparatus