3457989

Information

• Patent Grant
• 3457989

• References
• Source

• Patent Number

  3,457,989

• Date Filed

  Not available

• Date Issued

  Tuesday, July 29, 1969
  55 years ago

• CPC

  • F28F5/06 - Hollow screw conveyors
  • B01F7/085 - the helices intermeshing to knead the mixture
  • B01F15/0235 - using a hopper
  • B29C47/84 - Heating or cooling the screws
  • B29C47/842 - heating
  • B65G33/00 - Screw or rotary spiral conveyors
  • B65G33/18 - with multiple screws in parallel arrangements
  • B65G33/24 - Details
  • B65G45/005 - Cleaning conveyor screws
  • B29C47/0009 - characterised by the shape of the articles
  • B65G2812/0594 - with parallel screws
  • Y10S165/149 - having hollow blade

• US Classifications

  • 165 - Heat exchange