3841812

Information

• Patent Grant
• 3841812

• References
• Source

• Patent Number

  3,841,812

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1974
  50 years ago

• CPC

  • B29C67/20 - for porous or cellular articles
  • B29C44/3442 - Mixing, kneading or conveying the foamable material
  • B29C47/0801 - Drive or actuation means; Transmission means; Screw supporting means
  • B29C47/0845 - Material therefor
  • B29C47/38 - using screws surrounded by a cooperating barrel
  • B29C47/6006 - Hollow screws
  • B29C47/827 - characterised by differential heating or cooling
  • B29C47/842 - heating
  • B29C47/845 - cooling
  • B29C47/92 - Measuring, controlling or regulating
  • B29D25/00 - Producing frameless domes
  • B29C47/0019 - Flat rigid articles
  • B29C47/0021 - Flat flexible articles
  • B29C2947/92019 - Pressure
  • B29C2947/92409 - Die Nozzle zone
  • B29C2947/9259 - Angular velocity
  • B29C2947/92704 - Temperature
  • B29C2947/92876 - Feeding, melting, plasticising or pumping zones
  • B29C2947/92885 - Screw or gear
  • B29C2947/92895 - Barrel or housing
  • B29C2947/92952 - Drive section

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus