3305893

Information

• Patent Grant
• 3305893

• References
• Source

• Patent Number

  3,305,893

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1967
  57 years ago

• CPC

  • B29C47/847 - characterised by differential heating or cooling
  • B29C47/38 - using screws surrounded by a cooperating barrel
  • B29C47/40 - using at least two parallel intermeshing screws or at least two parallel non-intermeshing screws
  • B29C47/6043 - having grooves or cavities
  • B29C47/666 - having grooves or cavities
  • B29C47/822 - heating
  • B29C47/84 - Heating or cooling the screws
  • B29C47/842 - heating
  • B29C47/845 - cooling
  • B29C47/862 - heating
  • B29C47/0009 - characterised by the shape of the articles

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus
  • 415 - Rotary kinetic fluid motors or pumps